Tag: GO

((1,6)-alpha-glucosyl)poly((1,4)-alpha-glucosyl)glycogenin => poly{(1,4)-alpha-glucosyl} glycogenin + alpha-D-glucose [GO_0004135]

Catalysis of the hydrolysis of (1->6)-alpha-D-glucosidic branch linkages in glycogen phosphorylase limit dextrin. Limit dextrin is the highly branched core that remains after exhaustive treatment of glycogen with glycogen phosphorylase. It is formed because these enzymes cannot hydrolyze the (1->6) glycosidic linkages present.

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[heparan sulfate]-glucosamine 3-sulfotransferase 1 activity [GO_0008467]

Catalysis of the reaction: 3’-phosphoadenylyl sulfate + [heparan sulfate]-glucosamine = adenosine 3’,5’-bisphosphate + [heparan sulfate]-glucosamine 3-sulfate. The [heparan sulfate]-glucosamine 3-sulfate has a substrate consensus sequence of Glc(N2S>NAc)+/-6S GlcA GlcN2S*+/-6S GlcA>IdoA+/-2S Glc(N2S/NAc)+/-6S.

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1-PP-IP5 is phosphorylated to 1,5-(PP)2-IP4 by IP6K1/3 in the cytosol [GO_0000829]

Catalysis of the reaction: ATP + diphospho-1D-myo-inositol-pentakisphosphate = ADP + bis(diphospho)-1D-myo-inositol-tetrakisphosphate. The isomeric configurations of the diphospho-1D-myo-inositol-pentakisphosphate (PP-IP5) and bis(diphospho)-1D-myo-inositol-tetrakisphosphate (bis-PP-IP4) are unknown.

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14-3-3 protein binding [GO_0071889]

Binding to a 14-3-3 protein. A 14-3-3 protein is any of a large family of approximately 30kDa acidic proteins which exist primarily as homo- and heterodimers within all eukaryotic cells, and have been implicated in the modulation of distinct biological processes by binding to specific phosphorylated sites on diverse target proteins, thereby forcing conformational changes or influencing interactions between their targets and other molecules. Each 14-3-3 protein sequence can be roughly divided into three sections: a divergent amino terminus, the conserved core region and a divergent carboxy-terminus. The conserved middle core region of the 14-3-3s encodes an amphipathic groove that forms the main functional domain, a cradle for interacting with client proteins.

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2-iminobutanoate/2-iminopropanoate deaminase [GO_0120241]

Catalyzes the hydrolytic deamination of imine intermediates formed by several types of pyridoxal-5’-phosphate-dependent dehydratases, such as EC 4.3.1.19 and EC 4.3.1.17. This enzyme, which has been found in all species and tissues examined, catalyzes the hydrolytic deamination of imine intermediates formed by several types of pyridoxal-5’-phosphate-dependent dehydratases, such as EC 4.3.1.19 and EC 4.3.1.17. The reactions, which can occur spontaneously, are accelerated to minimize the cellular damage that could be caused by these reactive intermediates (from EC:3.5.99.10).

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3,4-dihydroxy-5-polyprenylbenzoic acid O-methyltransferase activity [GO_0010420]

Catalysis of the reaction: 3,4-dihydroxy-5-polyprenylbenzoic acid + S-adenosyl-L-methionine = 3-methoxy-4-hydroxy-5-polyprenylbenzoic acid + S-adenosyl-L-homocysteine + H+. Note that the polyprenyl sidechain substrate for this reaction has a different number of prenyl units in different organisms (for example, ubiquinone-6 in Saccharomyces, ubiquinone- 9 in rat and ubiquinone-10 in human), and thus the natural substrate for the enzymes from different organisms has a different number of prenyl units. However, the enzyme usually shows a low degree of specificity regarding the number of prenyl units.

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4-methylcholesta-8(9),24-dien-3beta-ol is oxidized to 4-carboxycholesta-8(9),24-dien-3beta-ol [GO_0000254]

Catalysis of the reaction: 4,4-dimethyl-5-alpha-cholesta-8,24-dien-3-beta-ol + 6 Fe(II)-[cytochrome b5] + 5 H+ + 3 O2 = 4-beta-hydroxymethyl-4-alpha-methyl-5-alpha-cholesta-8,24-dien-3-beta-ol + 6 Fe(III)-[cytochrome b5] + 4 H2O. Note that zymosterol is cholesta-8,24-dien-3-ol.

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7-methylguanosine cap hypermethylation [GO_0036261]

Hypermethylation of the 7-(mono)methylguanosine (m(7)G) cap structure at the 2’ position of the guanosine residue to convert a mono-methylated cap to a 2,2,7-trimethylguanosine cap structure. This type of cap modification occurs on small nuclear RNAs (snRNAs) and small nucleolar RNAs (snoRNAs) and is dependent on prior guanine-N7 methylation.

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ABCC4 accumulation of dense granule contents [GO_0015662]

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O = ADP + phosphate, to directly drive the transport of ions across a membrane. The reaction is characterized by the transient formation of a high-energy aspartyl-phosphoryl-enzyme intermediate.

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acetylation-dependent protein binding [GO_0140033]

Binding to a protein upon acetylation of the target protein. This term should only be used when the binding is shown to require acetylation of the target protein: the interaction needs to be tested with and without the PTM. The binding does not need to be at the site of acetylation. It may be that the acetylation causes a conformational change that allows binding of the protein to another region; this type of acetylation-dependent protein binding is valid for annotation to this term.

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acireductone synthase activity [GO_0043874]

Catalysis of the reactions: 5-(methylthio)-2,3-dioxopentyl phosphate + H2O = 1,2-dihydroxy-5-(methylthio)pent-1-en-3-one + phosphate; (1a) 5-(methylthio)-2,3-dioxopentyl phosphate = 2-hydroxy-5-(methylthio)-3-oxopent-1-enyl phosphate; (1b) 2-hydroxy-5-(methylthio)-3-oxopent-1-enyl phosphate + H2O = 1,2-dihydroxy-5-(methylthio)pent-1-en-3-one + phosphate. This function is involved in the process of methionine salvage.

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actin filament [GO_0005884]

A filamentous structure formed of a two-stranded helical polymer of the protein actin and associated proteins. Actin filaments are a major component of the contractile apparatus of skeletal muscle and the microfilaments of the cytoskeleton of eukaryotic cells. The filaments, comprising polymerized globular actin molecules, appear as flexible structures with a diameter of 5-9 nm. They are organized into a variety of linear bundles, two-dimensional networks, and three dimensional gels. In the cytoskeleton they are most highly concentrated in the cortex of the cell just beneath the plasma membrane.

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actin filament organization [GO_0007015]

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising actin filaments. Includes processes that control the spatial distribution of actin filaments, such as organizing filaments into meshworks, bundles, or other structures, as by cross-linking.

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action potential [GO_0001508]

A process in which membrane potential cycles through a depolarizing spike, triggered in response to depolarization above some threshold, followed by repolarization. This cycle is driven by the flow of ions through various voltage gated channels with different thresholds and ion specificities. Action potentials typically propagate across excitable membranes. This class covers both action potentials that propagate and those that fail to do so.

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Activated ERK1/2 threonine-phosphorylates FGFR4-associated FRS2. [GO_0004707]

Catalysis of the reaction: protein + ATP = protein phosphate + ADP. This reaction is the phosphorylation of proteins. Mitogen-activated protein kinase; a family of protein kinases that perform a crucial step in relaying signals from the plasma membrane to the nucleus. They are activated by a wide range of proliferation- or differentiation-inducing signals; activation is strong with agonists such as polypeptide growth factors and tumor-promoting phorbol esters, but weak (in most cell backgrounds) by stress stimuli.

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Activated type I receptor phosphorylates R-Smad1/5/8 directly [GO_0004675]

Combining with a signal and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity by catalysis of the reaction: ATP protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate.

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activation of cysteine-type endopeptidase activity involved in apoptotic process [GO_0006919]

Any process that initiates the activity of the inactive enzyme cysteine-type endopeptidase in the context of an apoptotic process. This term should be used when the annotation refers to a process that occurs in a context of apoptotic cell death. To annotate gene products involved in activation of cysteine-type endopeptidases in other cellular process (e.g., cell cycle arrest) that do not necessarily develop into an apoptotic process, please use the more general parent term GO:0097202. Examples of ‘activation of cysteine-type endopeptidase activity involved in apoptotic process’ are cytochrome c and Apaf1. When cytochrome c is released from mitochondria and forms a complex with Apaf1, they form a scaffolding platform in which the pro-caspase 9 is bound (the ‘apoptosome’). The caspase is then cleaved and activated. Cytochrome c and Apaf1 are therefore involved in the conversion of the zymogen procaspase 9 to the active form of the caspase.

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activin receptor activity [GO_0017002]

Combining with activin and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity. Activin is one of two gonadal glycoproteins related to transforming growth factor beta. Note that this term represents an activity and not a gene product, and should only be used when the receptor binds the ligand activin. For binding to other extracellular ligands, consider annotating to terms under ’transmembrane signaling receptor activity ; GO:0004888.

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actomyosin structure organization [GO_0031032]

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures containing both actin and myosin or paramyosin. The myosin may be organized into filaments. Note that this term is a child of ‘actin cytoskeleton organization and biogenesis ; GO:0030036’ because the actin cytoskeleton is defined as actin filaments and associated proteins.

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acyl carrier activity [GO_0000036]

Binding an acyl group and presenting it for processing or offloading to a cognate enzyme. Covalently binds the acyl group via a phosphopantetheine prosthetic group and mediates protein-protein interactions with the enzyme conferring specificity. The acyl carrier protein (ACP) presents substrates to enzymes involved in fatty acid biosynthesis or in polyketide secondary metabolite biosynthesis.

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Addition of isopentenyl pyrophosphate to DMAPP [GO_0004161]

Catalysis of the reaction: dimethylallyl diphosphate + isopentenyl diphosphate = diphosphate + geranyl diphosphate. Note that this is the first step in the formation of farnesyl diphosphate. The second step is ‘geranyltranstransferase activity ; GO:0004337’. Consider also annotating to the biological process term ‘farnesyl diphosphate biosynthetic process ; GO:0045337’.

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adenylate cyclase-activating G protein-coupled receptor signaling pathway [GO_0007189]

A G protein-coupled receptor signaling pathway in which the signal is transmitted via the activation of adenylyl cyclase activity which results in an increase in the intracellular concentration of cyclic AMP (cAMP). This pathway is negatively regulated by phosphodiesterase, which cleaves cAMP and terminates the signaling. This term can be used to annotate ligands, receptors and G-proteins that lead to activation of adenylate cyclase activity within a signaling pathway.

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adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway [GO_0007193]

A G protein-coupled receptor signaling pathway in which the signal is transmitted via the inhibition of adenylyl cyclase activity and a subsequent decrease in the intracellular concentration of cyclic AMP (cAMP). This term is intended to cover steps in a GPCR signaling pathway both upstream and downstream of adenylate-cyclase inhibition.

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adenylate cyclase-modulating G protein-coupled receptor signaling pathway [GO_0007188]

A G protein-coupled receptor signaling pathway in which the signal is transmitted via the activation or inhibition of adenylyl cyclase activity and a subsequent change in the intracellular concentration of cyclic AMP (cAMP). This term is intended to cover steps in a GPCR signaling pathway both upstream and downstream of adenylate-cyclase activity. For steps upstream of adenylate cyclase activity, consider instead annotating to ‘regulation of adenylate cyclase activity involved in G protein-coupled receptor signaling pathway ; GO:0010578.

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adipokinetic hormone receptor activity [GO_0097003]

Combining with an adipokinetic hormone to initiate a change in cell activity. Adipokinetic hormones (AKHs) are protein or peptide hormones that are important for sugar and fat homeostasis in metazoa. In insects, they mobilize sugar and lipids from the insect fat body during energy-requiring activities such as flight and locomotion. They also contribute to hemolymph sugar homeostasis.

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alpha-actinin binding [GO_0051393]

Binding to alpha-actinin, one of a family of proteins that cross-link F-actin as antiparallel homodimers. Alpha-actinin has a molecular mass of 93-103 KDa; at the N-terminus there are two calponin homology domains, at the C-terminus there are two EF-hands. These two domains are connected by the rod domain. This domain is formed by triple-helical spectrin repeats.

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anatomical structure development [GO_0048856]

The biological process whose specific outcome is the progression of an anatomical structure from an initial condition to its mature state. This process begins with the formation of the structure and ends with the mature structure, whatever form that may be including its natural destruction. An anatomical structure is any biological entity that occupies space and is distinguished from its surroundings. Anatomical structures can be macroscopic such as a carpel, or microscopic such as an acrosome.

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anatomical structure formation involved in morphogenesis [GO_0048646]

The developmental process pertaining to the initial formation of an anatomical structure from unspecified parts. This process begins with the specific processes that contribute to the appearance of the discrete structure and ends when the structural rudiment is recognizable. An anatomical structure is any biological entity that occupies space and is distinguished from its surroundings. Anatomical structures can be macroscopic such as a carpel, or microscopic such as an acrosome. Note that, for example, the formation of a pseudopod in an amoeba would not be considered formation involved in morphogenesis because it would not be thought of as the formation of an anatomical structure that was part of the shaping of the amoeba during its development. The formation of an axon from a neuron would be considered the formation of an anatomical structure involved in morphogenesis because it contributes to the creation of the form of the neuron in a developmental sense.

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anatomical structure homeostasis [GO_0060249]

A homeostatic process involved in the maintenance of an internal steady state within a defined anatomical structure of an organism, including control of cellular proliferation and death and control of metabolic function. An anatomical structure is any biological entity that occupies space and is distinguished from its surroundings. Anatomical structures can be macroscopic such as a carpel, or microscopic such as an acrosome.

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animal organ development [GO_0048513]

Development of a tissue or tissues that work together to perform a specific function or functions. Development pertains to the process whose specific outcome is the progression of a structure over time, from its formation to the mature structure. Organs are commonly observed as visibly distinct structures, but may also exist as loosely associated clusters of cells that work together to perform a specific function or functions.

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animal organ formation [GO_0048645]

The process pertaining to the initial formation of an animal organ from unspecified parts. The process begins with the specific processes that contribute to the appearance of the discrete structure, such as inductive events, and ends when the structural rudiment of the organ is recognizable, such as a condensation of mesenchymal cells into the organ rudiment. Organs are a natural part or structure in an animal or a plant, capable of performing some special action (termed its function), which is essential to the life or well-being of the whole. The heart and lungs are organs of animals, and the petal and leaf are organs of plants. In animals the organs are generally made up of several tissues, one of which usually predominates, and determines the principal function of the organ.

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animal organ morphogenesis [GO_0009887]

Morphogenesis of an animal organ. An organ is defined as a tissue or set of tissues that work together to perform a specific function or functions. Morphogenesis is the process in which anatomical structures are generated and organized. Organs are commonly observed as visibly distinct structures, but may also exist as loosely associated clusters of cells that work together to perform a specific function or functions.

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AP-1 adaptor complex binding [GO_0035650]

Binding to an AP-1 adaptor complex. The AP-1 adaptor complex is a heterotetrameric AP-type membrane coat adaptor complex that consists of beta1, gamma, mu1 and sigma1 subunits and links clathrin to the membrane surface of a vesicle. In at least humans, the AP-1 complex can be heterogeneric due to the existence of multiple subunit isoforms encoded by different genes (gamma1 and gamma2, mu1A and mu1B, and sigma1A, sigma1B and sigma1C).

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AP-2 adaptor complex binding [GO_0035612]

Binding to an AP-2 adaptor complex. The AP-2 adaptor complex is a heterotetrameric AP-type membrane coat adaptor complex that consists of alpha, beta2, mu2 and sigma2 subunits and links clathrin to the membrane surface of a vesicle. In at least humans, the AP-2 complex can be heterogeneric due to the existence of multiple subunit isoforms encoded by different alpha genes (alphaA and alphaC).

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apoptotic process [GO_0006915]

A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.

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apoptotic signaling pathway [GO_0097190]

A series of molecular signals which triggers the apoptotic death of a cell. The pathway starts with reception of a signal, and ends when the execution phase of apoptosis is triggered. This term can be used to annotate gene products involved in apoptotic events happening downstream of the cross-talk point between the extrinsic and intrinsic apoptotic pathways. The cross-talk starts when caspase-8 cleaves Bid and truncated Bid interacts with mitochondria. From this point on it is not possible to distinguish between extrinsic and intrinsic pathways.

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ATP-dependent activity [GO_0140657]

A molecular function characterized by the coupling of ATP hydrolysis to other steps of a reaction mechanism to make the reaction energetically favorable, for example to catalyze a reaction or drive transport against a concentration gradient. Note that this term represents a grouping class that includes all proteins that use ATP hydrolysis to drive a reaction; it is not meant to capture the ATP hydrolysis reaction itself. To annotate ATP hydrolysis, please use ‘ATP hydrolysis activity ; GO:0016887’.

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atrioventricular node development [GO_0003162]

The process whose specific outcome is the progression of the atrioventricular (AV) node over time, from its formation to the mature structure. The AV node is part of the cardiac conduction system that controls the timing of ventricle contraction by receiving electrical signals from the sinoatrial (SA) node and relaying them to the His-Purkinje system.

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Auto phosphorylation of TAK1 bound to p-IRAK2:pUb oligo-TRAF6: free K63 pUb:TAB1:TAB2/TAB3 [GO_0008349]

Catalysis of the phosphorylation of serine and threonine residues in a mitogen-activated protein kinase kinase kinase (MAPKKK), resulting in activation of MAPKKK. MAPKKK signaling pathways relay, amplify and integrate signals from the plasma membrane to the nucleus in response to a diverse range of extracellular stimuli.

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autonomic nervous system development [GO_0048483]

The process whose specific outcome is the progression of the autonomic nervous system over time, from its formation to the mature structure. The autonomic nervous system is composed of neurons that are not under conscious control, and is comprised of two antagonistic components, the sympathetic and parasympathetic nervous systems. The autonomic nervous system regulates key functions including the activity of the cardiac (heart) muscle, smooth muscles (e.g. of the gut), and glands.

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AV node cell to bundle of His cell communication [GO_0086067]

The process that mediates interactions between an AV node cell and its surroundings that contributes to the process of the AV node cell communicating with a bundle of His cell in cardiac conduction. Encompasses interactions such as signaling or attachment between one cell and another cell, between a cell and an extracellular matrix, or between a cell and any other aspect of its environment.

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axonogenesis [GO_0007409]

De novo generation of a long process of a neuron, including the terminal branched region. Refers to the morphogenesis or creation of shape or form of the developing axon, which carries efferent (outgoing) action potentials from the cell body towards target cells. Note that ‘axonogenesis’ differs from ‘axon development’ in that the latter also covers other processes, such as axon regeneration (regrowth after loss or damage, not necessarily of the whole axon).

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basal RNA polymerase II transcription machinery binding [GO_0001099]

Binding to a component of the basal transcription machinery for RNA polymerase II which is composed of the RNA polymerase II core enzyme, a multisubunit eukaryotic nuclear RNA polymerase typically composed of twelve subunits, and the basal RNA polymerase II transcription factors, the minimal set of factors required for formation of the preinitiation complex (PIC) by the RNA polymerase. Note that the definition of basal, or general, transcription factors has typically been done at a small number of well characterized activator-independent promoters. At an activator-dependent promoter, one or more additional factors are generally required in addition to the basal factors.

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basal transcription machinery binding [GO_0001098]

Binding to a component of the basal transcription machinery which is composed of the RNA polymerase core enzyme and the basal transcription factor(s), the minimal set of factors required for formation of the preinitiation complex (PIC) by the RNA polymerase. Note that the definition of basal, or general, transcription factors has typically been done at a small number of well characterized activator-independent promoters. At an activator-dependent promoter, one or more additional factors are generally required in addition to the basal factors.

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basement membrane [GO_0005604]

A collagen-containing extracellular matrix consisting of a thin layer of dense material found in various animal tissues interposed between the cells and the adjacent connective tissue. It consists of the basal lamina plus an associated layer of reticulin fibers. Note that this term has no relationship to ‘membrane ; GO:0016020’ because the basement membrane is not a lipid bilayer.

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basement membrane assembly [GO_0070831]

The aggregation, arrangement and bonding together of a set of components to form a basement membrane, a part of the extracellular region that consists of a thin layer of dense material found in various animal tissues interposed between the cells and the adjacent connective tissue. Note that this term has no relationship to ‘membrane assembly ; GO:0071709’ because the basement membrane is not a lipid bilayer.

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behavior [GO_0007610]

The internally coordinated responses (actions or inactions) of animals (individuals or groups) to internal or external stimuli, via a mechanism that involves nervous system activity. 1. Note that this term is in the subset of terms that should not be used for direct gene product annotation. Instead, select a child term or, if no appropriate child term exists, please request a new term. Direct annotations to this term may be amended during annotation reviews. 2. While a broader definition of behavior encompassing plants and single cell organisms would be justified on the basis of some usage (see PMID:20160973 for discussion), GO uses a tight definition that limits behavior to animals and to responses involving the nervous system, excluding plant responses that GO classifies under development, and responses of unicellular organisms that has general classifications for covering the responses of cells in multicellular organisms (e.g. cell chemotaxis).

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beta-galactosidase activity [GO_0004565]

Catalysis of the hydrolysis of terminal, non-reducing beta-D-galactose residues in beta-D-galactosides. Note that the inclusion of ‘MetaCyc:BGALACT-PWY’ is exceptional: normally MetaCyc pathway entries are database references for biological process terms, not molecular function terms. An exception was made in this case because the MetaCyc entry ‘BGALACT-PWY’ describes only one reaction, that catalyzed by beta-galactosidase.

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BH domain binding [GO_0051400]

Binding to a Bcl-2 homology (BH) protein domain. Bcl-2-related proteins share homology in one to four conserved regions designated the Bcl-2 homology (BH) domains BH1, BH2, BH3 and BH4. These domains contribute at multiple levels to the function of these proteins in cell death and survival. Anti-apoptotic members of the Bcl-2 family have four BH domains (BH1-BH4). Pro-apoptotic members have fewer BH domains.

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bilirubin transmembrane transporter activity [GO_0015127]

Enables the transfer of bilirubin from one side of a membrane to the other. Bilirubin is a linear tetrapyrrole produced in the reticuloendothelial system from biliverdin and transported to the liver as a complex with serum albumin. In the liver, bilirubin is converted to bilirubin bisglucuronide, which is excreted in the bile.

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binding [GO_0005488]

The selective, non-covalent, often stoichiometric, interaction of a molecule with one or more specific sites on another molecule. Note that this term is in the subset of terms that should not be used for direct, manual gene product annotation. Please choose a more specific child term, or request a new one if no suitable term is available. For ligands that bind to signal transducing receptors, consider the molecular function term ‘receptor binding ; GO:0005102’ and its children.

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biological_process [GO_0008150]

A biological process represents a specific objective that the organism is genetically programmed to achieve. Biological processes are often described by their outcome or ending state, e.g., the biological process of cell division results in the creation of two daughter cells (a divided cell) from a single parent cell. A biological process is accomplished by a particular set of molecular functions carried out by specific gene products (or macromolecular complexes), often in a highly regulated manner and in a particular temporal sequence. Note that, in addition to forming the root of the biological process ontology, this term is recommended for use for the annotation of gene products whose biological process is unknown. Note that when this term is used for annotation, it indicates that no information was available about the biological process of the gene product annotated as of the date the annotation was made; the evidence code ND, no data, is used to indicate this. Note that, in addition to forming the root of the biological process ontology, this term is recommended for use for the annotation of gene products whose biological process is unknown. When this term is used for annotation, it indicates that no information was available about the biological process of the gene product annotated as of the date the annotation was made; the evidence code ’no data’ (ND), is used to indicate this.

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blastocyst development [GO_0001824]

The process whose specific outcome is the progression of the blastocyst over time, from its formation to the mature structure. The mammalian blastocyst is a hollow ball of cells containing two cell types, the inner cell mass and the trophectoderm. See also the Anatomical Dictionary for Mouse Development ontology terms ‘TS5, embryo ; EMAP:23’, ‘TS5, inner cell mass ; EMAP:24’ and ‘TS5, trophectoderm; EMAP:28’.

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bleb assembly [GO_0032060]

The assembly of a bleb, a cell extension caused by localized decoupling of the cytoskeleton from the plasma membrane and characterized by rapid formation, rounded shape, and scarcity of organelles within the protrusion. Plasma membrane blebbing occurs during apoptosis and other cellular processes, including cell locomotion, cell division, and as a result of physical or chemical stresses.

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brain development [GO_0007420]

The process whose specific outcome is the progression of the brain over time, from its formation to the mature structure. Brain development begins with patterning events in the neural tube and ends with the mature structure that is the center of thought and emotion. The brain is responsible for the coordination and control of bodily activities and the interpretation of information from the senses (sight, hearing, smell, etc.).

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CAAX-protein geranylgeranyltransferase activity [GO_0004662]

Catalysis of the reaction: geranylgeranyl diphosphate + protein-cysteine = S-geranylgeranyl-protein + diphosphate. This reaction is the formation of a thioether linkage between the C-1 atom of the geranylgeranyl group and a cysteine residue fourth from the C-terminus of the protein. The protein substrates have the C-terminal sequence CA1A2X, where the terminal residue, X, is preferably leucine and A2 should not be aromatic. Known substrates include most g-subunits of heterotrimeric G proteins and Ras-related GTPases such as members of the Ras and Rac/Rho families.

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canonical NF-kappaB signal transduction [GO_0007249]

The process in which a signal is passed on to downstream components within the cell through the I-kappaB-kinase (IKK)-dependent activation of NF-kappaB, also known as the canonical NF-kappaB signaling cascade. The cascade begins with activation of a trimeric IKK complex (consisting of catalytic kinase subunits IKKalpha and/or IKKbeta, and the regulatory scaffold protein NEMO) and ends with the regulation of transcription of target genes by NF-kappaB. In a resting state, NF-kappaB dimers are bound to I-kappaB proteins, sequestering NF-kappaB in the cytoplasm. Phosphorylation of I-kappaB targets I-kappaB for ubiquitination and proteasomal degradation, thus releasing the NF-kappaB dimers, which can translocate to the nucleus to bind DNA and regulate transcription. The canonical NF-kappaB pathway is mainly stimulated by proinflammatory cytokines such as IL-1beta, tumor necrosis factor (TNF)-alpha, antigen ligands, and toll-like receptors (TLRs).

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carbohydrate binding [GO_0030246]

Binding to a carbohydrate, which includes monosaccharides, oligosaccharides and polysaccharides as well as substances derived from monosaccharides by reduction of the carbonyl group (alditols), by oxidation of one or more hydroxy groups to afford the corresponding aldehydes, ketones, or carboxylic acids, or by replacement of one or more hydroxy group(s) by a hydrogen atom. Cyclitols are generally not regarded as carbohydrates.

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carbon-nitrogen ligase activity, with glutamine as amido-N-donor [GO_0016884]

Catalysis of the transfer of the amide nitrogen of glutamine to a substrate. Usually composed of two subunits or domains, one that first hydrolyzes glutamine, and then transfers the resulting ammonia to the second subunit (or domain), where it acts as a source of nitrogen.

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carbon-nitrogen lyase activity [GO_0016840]

Catalysis of the release of ammonia or one of its derivatives, with the formation of a double bond or ring. Enzymes with this activity may catalyze the actual elimination of the ammonia, amine or amide, e.g. CH-CH(-NH-R) = C=CH- + NH2-R. Others, however, catalyze elimination of another component, e.g. water, which is followed by spontaneous reactions that lead to breakage of the C-N bond, e.g. L-serine ammonia-lyase (EC:4.3.1.17), so that the overall reaction is C(-OH)-CH(-NH2) = CH2-CO- + NH3, i.e. an elimination with rearrangement. The sub-subclasses of EC:4.3 are the ammonia-lyases (EC:4.3.1), lyases acting on amides, amidines, etc. (EC:4.3.2), the amine-lyases (EC:4.3.3), and other carbon-nitrogen lyases (EC:4.3.99).

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CARD domain binding [GO_0050700]

Binding to a CARD (N-terminal caspase recruitment) domain, a protein-protein interaction domain that belongs to the death domain-fold superfamily. These protein molecule families are similar in structure with each consisting of six or seven anti-parallel alpha-helices that form highly specific homophilic interactions between signaling partners. CARD exists in the N-terminal prodomains of several caspases and in apoptosis-regulatory proteins and mediates the assembly of CARD-containing proteins that participate in activation or suppression of CARD carrying members of the caspase family.

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cardiac neural crest cell differentiation involved in heart development [GO_0061307]

The process in which a relatively unspecialized cell acquires specialized features of a cardiac neural crest cell that will migrate to the heart and contribute to its development. Cardiac neural crest cells are specialized cells that migrate toward the heart from the third, fourth and sixth pharyngeal arches.

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catalytic activity [GO_0003824]

Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.

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catechol oxidase activity [GO_0004097]

Catalysis of the reaction: 2 L-dopa + O2 = 2 H2O + 2 L-dopaquinone. This reaction catalyzes exclusively the oxidation of catechols (i.e., o-diphenols) to the corresponding o-quinones. GO:0004097 describes oxidation of catechols (i.e., o-diphenols) to the corresponding o-quinones. For monooxygenation of monophenols, consider instead the term ‘monophenol monooxygenase activity ; GO:0004503’.

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CD320 transports extracellular TCII:Cbl to endosome [GO_0038024]

Binding specifically to a substance (cargo) to deliver it to a transport vesicle. Cargo receptors span a membrane (either the plasma membrane or a vesicle membrane), binding simultaneously to cargo molecules and coat adaptors, to efficiently recruit soluble proteins to nascent vesicles. Notes: (1) this term and its child terms are intended for receptors that bind to and internalize molecules by receptor-mediated endocytosis. For receptors that are coupled to a signal transduction pathway, consider instead the term ‘signaling receptor activity ; GO:0038023’ and its children. (2) Cargo receptors transport substances by vesicular transport, not by transmembrane transport. For transmembrane transporters, consider instead the term ’transmembrane transporter activity ; GO:0022857.

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CDK12 phosphorylates RNA Pol II CTD at DNA repair genes [GO_0004693]

Cyclin-dependent catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate. This reaction requires the binding of a regulatory cyclin subunit and full activity requires stimulatory phosphorylation by a CDK-activating kinase (CAK).

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CDKAL1:4Fe-4S methylthiolates N6-threonylcarbamoyladenosine-37 in tRNA yielding 2-methylthio-N6-threonylcarbamoyladenosine-37 [GO_0035598]

Catalysis of the methylthiolation (-SCH3 addition) at the C2 of the adenosine ring of N6-threonylcarbomyladenosine (t6A) in tRNA, to form 2-methylthio-N6-threonylcarbamoyladenosine (ms2t6A).

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cell communication involved in cardiac conduction [GO_0086065]

Any process that mediates interactions between a cell and its surroundings that contributes to the process of cardiac conduction. Encompasses interactions such as signaling or attachment between one cell and another cell, between a cell and an extracellular matrix, or between a cell and any other aspect of its environment.

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cell cycle [GO_0007049]

The progression of biochemical and morphological phases and events that occur in a cell during successive cell replication or nuclear replication events. Canonically, the cell cycle comprises the replication and segregation of genetic material followed by the division of the cell, but in endocycles or syncytial cells nuclear replication or nuclear division may not be followed by cell division.

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cell cycle phase [GO_0022403]

One of the distinct periods or stages into which the cell cycle is divided. Each phase is characterized by the occurrence of specific biochemical and morphological events. Note that this term should not be used for direct annotation. If you are trying to make an annotation to x phase, it is likely that the correct annotation is ‘regulation of x/y phase transition’ or to a process which occurs during the reported phase (i.e mitotic DNA replication for mitotic S-phase). To capture the phase when a specific location or process is observed, the phase term can be used in an annotation extension (PMID:24885854) applied to a cellular component term (with the relation exists_during) or a biological process term (with the relation happens_during).

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cell death [GO_0008219]

Any biological process that results in permanent cessation of all vital functions of a cell. A cell should be considered dead when any one of the following molecular or morphological criteria is met: (1) the cell has lost the integrity of its plasma membrane; (2) the cell, including its nucleus, has undergone complete fragmentation into discrete bodies (frequently referred to as apoptotic bodies). The cell corpse (or its fragments) may be engulfed by an adjacent cell in vivo, but engulfment of whole cells should not be considered a strict criteria to define cell death as, under some circumstances, live engulfed cells can be released from phagosomes (see PMID:18045538). This term should not be used for direct annotation. The only exception should be when experimental data (e.g., staining with trypan blue or propidium iodide) show that cell death has occurred, but fail to provide details on death modality (accidental versus programmed). When information is provided on the cell death mechanism, annotations should be made to the appropriate descendant of ‘cell death’ (such as, but not limited to, GO:0097300 ‘programmed necrotic cell death’ or GO:0006915 ‘apoptotic process’). Also, if experimental data suggest that a gene product influences cell death indirectly, rather than being involved in the death process directly, consider annotating to a ‘regulation’ term.

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cell differentiation [GO_0030154]

The process in which relatively unspecialized cells, e.g. embryonic or regenerative cells, acquire specialized structural and/or functional features that characterize the cells, tissues, or organs of the mature organism or some other relatively stable phase of the organism’s life history. Differentiation includes the processes involved in commitment of a cell to a specific fate and its subsequent development to the mature state.

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cell fate commitment [GO_0045165]

The commitment of cells to specific cell fates and their capacity to differentiate into particular kinds of cells. Positional information is established through protein signals that emanate from a localized source within a cell (the initial one-cell zygote) or within a developmental field. Note that this term was ‘cell fate determination’ but the term name was changed to better match its existing definition and the child term ‘cell fate determination; GO:0001709’ was also created.

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cell fate commitment involved in pattern specification [GO_0060581]

The commitment of cells to specific cell fates and their capacity to differentiate into particular kinds of cells within a field of cells that will exhibit a certain pattern of differentiation. Positional information is established through protein signals that emanate from a localized source within a developmental field resulting in specification of a cell type. Those signals are then interpreted in a cell-autonomous manner resulting in the determination of the cell type.

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cell morphogenesis involved in differentiation [GO_0000904]

The change in form (cell shape and size) that occurs when relatively unspecialized cells, e.g. embryonic or regenerative cells, acquire specialized structural and/or functional features that characterize the cells, tissues, or organs of the mature organism or some other relatively stable phase of the organism’s life history.

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cell population proliferation [GO_0008283]

The multiplication or reproduction of cells, resulting in the expansion of a cell population. This term was moved out from being a child of ‘cellular process’ because it is a cell population-level process, and cellular processes are restricted to those processes that involve individual cells. Also note that this term is intended to be used for the proliferation of cells within a multicellular organism, not for the expansion of a population of single-celled organisms.

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cell surface receptor signaling pathway [GO_0007166]

The series of molecular signals initiated by activation of a receptor on the surface of a cell. The pathway begins with binding of an extracellular ligand to a cell surface receptor, or for receptors that signal in the absence of a ligand, by ligand-withdrawal or the activity of a constitutively active receptor. The pathway ends with regulation of a downstream cellular process, e.g. transcription.

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cell-cell signaling [GO_0007267]

Any process that mediates the transfer of information from one cell to another. This process includes signal transduction in the receiving cell and, where applicable, release of a ligand and any processes that actively facilitate its transport and presentation to the receiving cell. Examples include signaling via soluble ligands, via cell adhesion molecules and via gap junctions.

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cell-cell signaling by wnt [GO_0198738]

Any process that mediates the transfer of information from one cell to another, medaited by a wnt family protein ligand. This process includes wnt signal transduction in the receiving cell, release of wnt ligand from a secreting cell as well as any processes that actively facilitate wnt transport and presentation to receptor on the recieving cell.

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cellular divalent inorganic anion homeostasis [GO_0072501]

Any process involved in the maintenance of an internal steady state of divalent inorganic anions at the level of a cell. Note that this term was split from ‘cellular di-, tri-valent inorganic anion homeostasis ; GO:0030319’ (sibling term ‘cellular trivalent inorganic anion homeostasis’ ; GO:0072502’).

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cellular divalent inorganic cation homeostasis [GO_0072503]

Any process involved in the maintenance of an internal steady state of divalent cations at the level of a cell. Note that this term was split from ‘cellular di-, tri-valent inorganic cation homeostasis ; GO:0030005’ (sibling term ‘cellular trivalent inorganic cation homeostasis’ ; GO:0072504’).

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cellular macromolecule biosynthetic process [GO_0034645]

The chemical reactions and pathways resulting in the formation of a macromolecule, any molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition of units derived, actually or conceptually, from molecules of low relative molecular mass, carried out by individual cells.

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cellular response to abiotic stimulus [GO_0071214]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an abiotic (non-living) stimulus. Note that this term is in the subset of terms that should not be used for direct gene product annotation. Instead, select a child term or, if no appropriate child term exists, please request a new term. Direct annotations to this term may be amended during annotation QC.

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cellular response to biotic stimulus [GO_0071216]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a biotic stimulus, a stimulus caused or produced by a living organism. Note that this term is in the subset of terms that should not be used for direct gene product annotation. Instead, select a child term or, if no appropriate child term exists, please request a new term. Direct annotations to this term may be amended during annotation QC.

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cellular response to catecholamine stimulus [GO_0071870]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a catecholamine stimulus. A catecholamine is any of a group of biogenic amines that includes 4-(2-aminoethyl)pyrocatechol [4-(2-aminoethyl)benzene-1,2-diol] and derivatives formed by substitution.

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cellular response to chemical stimulus [GO_0070887]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a chemical stimulus. Note that this term is in the subset of terms that should not be used for direct gene product annotation. Instead, select a child term or, if no appropriate child term exists, please request a new term. Direct annotations to this term may be amended during annotation QC.

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cellular response to endogenous stimulus [GO_0071495]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus arising within the organism. Note that this term is in the subset of terms that should not be used for direct gene product annotation. Instead, select a child term or, if no appropriate child term exists, please request a new term. Direct annotations to this term may be amended during annotation QC.

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cellular response to insulin stimulus [GO_0032869]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an insulin stimulus. Insulin is a polypeptide hormone produced by the islets of Langerhans of the pancreas in mammals, and by the homologous organs of other organisms.

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cellular response to monoamine stimulus [GO_0071868]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a monoamine stimulus. A monoamine is any of a group of molecular messengers that contain one amino group that is connected to an aromatic ring by ethylene group (-CH2-CH2-). Monoamines are derived from the aromatic amino acids phenylalanine, tyrosine, histidine and tryptophan.

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cellular response to oxidative stress [GO_0034599]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.

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cellular response to peptide hormone stimulus [GO_0071375]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a peptide hormone stimulus. A peptide hormone is any of a class of peptides that are secreted into the blood stream and have endocrine functions in living animals.

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cellular response to radiation [GO_0071478]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an electromagnetic radiation stimulus. Electromagnetic radiation is a propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other and to the direction of propagation. Note that ‘radiation’ refers to electromagnetic radiation of any wavelength.

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cellular response to stimulus [GO_0051716]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus. The process begins with detection of the stimulus by a cell and ends with a change in state or activity or the cell. Note that this term is in the subset of terms that should not be used for direct gene product annotation. Instead, select a child term or, if no appropriate child term exists, please request a new term. Direct annotations to this term may be amended during annotation QC.

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cellular response to stress [GO_0033554]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating the organism is under stress. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation). Note that this term is in the subset of terms that should not be used for direct gene product annotation. Instead, select a child term or, if no appropriate child term exists, please request a new term. Direct annotations to this term may be amended during annotation QC.

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cellular response to xenobiotic stimulus [GO_0071466]

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus from a xenobiotic, a compound foreign to the organism exposed to it. It may be synthesized by another organism (like ampicilin) or it can be a synthetic chemical.

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cellular trivalent inorganic anion homeostasis [GO_0072502]

Any process involved in the maintenance of an internal steady state of trivalent inorganic anions at the level of a cell. Note that this term was split from ‘cellular di-, tri-valent inorganic anion homeostasis ; GO:0030319’ (sibling term ‘cellular divalent inorganic anion homeostasis’ ; GO:0072501’).

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cellular_component [GO_0005575]

A location, relative to cellular compartments and structures, occupied by a macromolecular machine when it carries out a molecular function. There are two ways in which the gene ontology describes locations of gene products: (1) relative to cellular structures (e.g., cytoplasmic side of plasma membrane) or compartments (e.g., mitochondrion), and (2) the stable macromolecular complexes of which they are parts (e.g., the ribosome). Note that, in addition to forming the root of the cellular component ontology, this term is recommended for use for the annotation of gene products whose cellular component is unknown. When this term is used for annotation, it indicates that no information was available about the cellular component of the gene product annotated as of the date the annotation was made; the evidence code ’no data’ (ND), is used to indicate this. Note that, in addition to forming the root of the cellular component ontology, this term is recommended for use for the annotation of gene products whose cellular component is unknown. Note that when this term is used for annotation, it indicates that no information was available about the cellular component of the gene product annotated as of the date the annotation was made; the evidence code ND, no data, is used to indicate this.

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central nervous system development [GO_0007417]

The process whose specific outcome is the progression of the central nervous system over time, from its formation to the mature structure. The central nervous system is the core nervous system that serves an integrating and coordinating function. In vertebrates it consists of the brain and spinal cord. In those invertebrates with a central nervous system it typically consists of a brain, cerebral ganglia and a nerve cord.

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central nervous system formation [GO_0021556]

The process that gives rise to the central nervous system. This process pertains to the initial formation of a structure from unspecified parts. The central nervous system is the core nervous system that serves an integrating and coordinating function. In vertebrates it consists of the brain, spinal cord and spinal nerves. In those invertebrates with a central nervous system it typically consists of a brain, cerebral ganglia and a nerve cord.

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central nervous system maturation [GO_0021626]

A developmental process, independent of morphogenetic (shape) change, that is required for the central nervous system to attain its fully functional state. The central nervous system is the core nervous system that serves an integrating and coordinating function. In vertebrates it consists of the brain and spinal cord. In those invertebrates with a central nervous system it typically consists of a brain, cerebral ganglia and a nerve cord.

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central nervous system morphogenesis [GO_0021551]

The process in which the anatomical structure of the central nervous system is generated and organized. The central nervous system is the core nervous system that serves an integrating and coordinating function. In vertebrates it consists of the brain and spinal cord. In those invertebrates with a central nervous system it typically consists of a brain, cerebral ganglia and a nerve cord.

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chemical synaptic transmission [GO_0007268]

The vesicular release of classical neurotransmitter molecules from a presynapse, across a chemical synapse, the subsequent activation of neurotransmitter receptors at the postsynapse of a target cell (neuron, muscle, or secretory cell) and the effects of this activation on the postsynaptic membrane potential and ionic composition of the postsynaptic cytosol. This process encompasses both spontaneous and evoked release of neurotransmitter and all parts of synaptic vesicle exocytosis. Evoked transmission starts with the arrival of an action potential at the presynapse.

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chemokine activity [GO_0008009]

The function of a family of small chemotactic cytokines; their name is derived from their ability to induce directed chemotaxis in nearby responsive cells. All chemokines possess a number of conserved cysteine residues involved in intramolecular disulfide bond formation. Some chemokines are considered pro-inflammatory and can be induced during an immune response to recruit cells of the immune system to a site of infection, while others are considered homeostatic and are involved in controlling the migration of cells during normal processes of tissue maintenance or development. Chemokines are found in all vertebrates, some viruses and some bacteria.

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chlorophyllide a oxygenase [overall] activity [GO_0010277]

Catalysis of the reactions: chlorophyllide a + O2 + NADPH + H+ = 7-hydroxychlorophyllide a + H2O + NADP+; and 7-hydroxychlorophyllide a + O2 + NADPH + H+ = chlorophyllide b + 2 H2O + NADP+. This is a process composed of two reactions represented by the terms ‘GO:0052606 : chlorophyllide a oxygenase activity’ and ‘GO:0052607 : 7-hydroxy-chlorophyllide a oxygenase activity’.

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chromosome organization [GO_0051276]

A process that is carried out at the cellular level that results in the assembly, arrangement of constituent parts, or disassembly of chromosomes, structures composed of a very long molecule of DNA and associated proteins that carries hereditary information. This term covers covalent modifications at the molecular level as well as spatial relationships among the major components of a chromosome.

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chromosome segregation [GO_0007059]

The process in which genetic material, in the form of chromosomes, is organized into specific structures and then physically separated and apportioned to two or more sets. In eukaryotes, chromosome segregation begins with the condensation of chromosomes, includes chromosome separation, and ends when chromosomes have completed movement to the spindle poles.

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Chymase hydrolyzes Angiotensin-(1-10) to Angiotensin-(1-8) [GO_0008236]

Catalysis of the hydrolysis of peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).

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ciliary basal body-plasma membrane docking [GO_0097711]

The docking of a cytosolic centriole/basal body to the plasma membrane via the ciliary transition fibers. In some species this may happen via an intermediate step, by first docking to the ciliary vesicle via the ciliary transition fibers. The basal body-ciliary vesicle then relocates to the plasma membrane, followed by the ciliary vesicle fusing with the plasma membrane, effectively attaching the basal body to the plasma membrane. Basal bodies in jawed vertebrates appear to first attach to a ciliary vesicle. It is unclear how specific this is to jawed vertebrates or if other organisms also employ this sequence. Some species like Giardia intestinalis do not relocate their basal bodies to the plasma membrane, but have their axonemes extend through the cytosol to then protrude out of the cell to form flagella.

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ciliary plasm [GO_0097014]

All of the contents of a cilium, excluding the plasma membrane surrounding the cilium. Note that we deem cilium and microtubule-based flagellum to be equivalent. Also, researchers consider the composition of both the plasm and the membrane of the cilium to be detectably different from that in the non-ciliary cytosol and plasma membrane (e.g. in terms of calcium ion concentration, membrane lipid composition, and more). For this reason, the term “ciliary plasm” is not linked to “cytoplasm”.

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ciliary transition zone [GO_0035869]

A region of the cilium between the basal body and proximal segment that is characterized by Y-shaped assemblages that connect axonemal microtubules to the ciliary membrane. The ciliary transition zone appears to function as a gate that controls ciliary membrane composition and separates the cytosol from the ciliary plasm. Depending on the species, this region may have a distinct geometrically shaped electron-dense structure within the axonemal lumen visible in electron microscopy images; most animals don’t display this inner structure. The axoneme extends through the ciliary transition zone, but only consists of the outer doublets. The central pair, axonemal spokes, and dynein complexes are not found in this part of the ciliary shaft. Note that the connecting cilium of the photoreceptor cells is thought to be equivalent to the transition zone.

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cilium [GO_0005929]

A specialized eukaryotic organelle that consists of a filiform extrusion of the cell surface and of some cytoplasmic parts. Each cilium is largely bounded by an extrusion of the cytoplasmic (plasma) membrane, and contains a regular longitudinal array of microtubules, anchored to a basal body. Note that we deem cilium and microtubule-based flagellum to be equivalent. In most eukaryotic species, intracellular sub-components of the cilium, such as the ciliary base and rootlet, are located near the plasma membrane. In Diplomonads such as Giardia, instead, the same ciliary parts are located further intracellularly. Also, ‘cilium’ may be used when axonemal structure and/or motility are unknown, or when axonemal structure is unusual. For all other cases, please refer to children of ‘cilium’. Finally, note that any role of ciliary proteins in sensory events should be captured by annotating to relevant biological process terms.

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cilium organization [GO_0044782]

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a cilium, a specialized eukaryotic organelle that consists of a filiform extrusion of the cell surface. Each cilium is bounded by an extrusion of the cytoplasmic membrane, and contains a regular longitudinal array of microtubules, anchored basally in a centriole. Note that we deem cilium and microtubule-based flagellum to be equivalent.

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circulatory system development [GO_0072359]

The process whose specific outcome is the progression of the circulatory system over time, from its formation to the mature structure. The circulatory system is the organ system that passes nutrients (such as amino acids and electrolytes), gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases and help stabilize body temperature and pH to maintain homeostasis.

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cis-regulatory region sequence-specific DNA binding [GO_0000987]

Binding to a specific upstream regulatory DNA sequence (transcription factor recognition sequence or binding site) located in cis relative to the transcription start site (i.e., on the same strand of DNA) of a gene transcribed by some RNA polymerase. The proximal promoter is in cis with and relatively close to the core promoter.

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citrate <=> isocitrate [GO_0003994]

Catalysis of the reaction: citrate = isocitrate. The reaction occurs in two steps: (1) citrate = cis-aconitate + H2O, (2) cis-aconitate + H2O = isocitrate. This reaction is the interconversion of citrate and isocitrate via the labile, enzyme-bound intermediate cis-aconitate. Water is removed from one part of the citrate molecule and added back to a different atom to form isocitrate. This is a process composed of two reactions represented by the terms ‘GO:0052632 : citrate hydro-lyase (cis-aconitate-forming) activity’ and ‘GO:0052633 : isocitrate hydro-lyase (cis-aconitate-forming) activity’.

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citrate secondary active transmembrane transporter activity [GO_0071913]

Enables the transfer of citrate from one side of a membrane to the other, up its concentration gradient. The transporter binds the solute and undergoes a series of conformational changes. Transport works equally well in either direction and is driven by a chemiosmotic source of energy. Secondary active transporters include symporters and antiporters.

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class I DNA-(apurinic or apyrimidinic site) endonuclease activity [GO_0140078]

Catalysis of the cleavage of an AP site 3’ of the baseless site by a beta-lyase mechanism, leaving an unsaturated aldehyde, termed a 3’-(4-hydroxy-5-phospho-2-pentenal) residue, and a 5’-phosphate. Note that this term is does not have parentage in the ’nuclease activity’ branch of the ontology because both GO and the Enzyme Commission define nuclease activity as a type of hydrolysis. Class II AP endonuclease is a nuclease, but not Class I, III and IV.

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class II DNA-(apurinic or apyrimidinic site) endonuclease activity [GO_0052720]

Catalysis of the hydrolysis of ester linkages immediately 5’ to an apurinic/apyrimidinic (AP; also called abasic) site within a deoxyribonucleic acid molecule by creating internal breaks, generating a single-strand break with 5’-deoxyribose phosphate and 3’-hydroxyl ends. Class II AP endonuclease is a nuclease, but not Class I, III and IV.

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Cleavage of 5-hydroxyluracil by UNG glycosylase [GO_0004844]

Catalysis of the cleavage of the N-C1’ glycosidic bond between the damaged DNA base and the deoxyribose sugar, releasing a free base and leaving an apyrimidinic (AP) site. Enzymes with this activity recognize and remove uracil bases in DNA that result from the deamination of cytosine or the misincorporation of dUTP opposite an adenine.

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Cleavage of formamidopyrimidine (FapyA) by NTHL1 glycosylase [GO_0008534]

Catalysis of the removal of oxidized purine bases by cleaving the N-C1’ glycosidic bond between the oxidized purine and the deoxyribose sugar. The reaction involves the formation of a covalent enzyme-substrate intermediate. Release of the enzyme and free base by a beta-elimination or a beta, gamma-elimination mechanism results in the cleavage of the DNA backbone 3’ of the apurinic (AP) site. Consider also annotating to the molecular function term ‘DNA-(apurinic or apyrimidinic site) lyase activity ; GO:0003906’.

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coenzyme A transmembrane transport [GO_0035349]

The process in which coenzyme A is transported across a membrane. Coenzyme A, 3’-phosphoadenosine-(5’)diphospho(4’)pantatheine, is an acyl carrier in many acylation and acyl-transfer reactions in which the intermediate is a thiol ester. Note that this term is not intended for use in annotating lateral movement within membranes.

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collagen biosynthetic process [GO_0032964]

The chemical reactions and pathways resulting in the formation of collagen, any of a group of fibrous proteins of very high tensile strength that form the main component of connective tissue in animals. Collagen is highly enriched in glycine (some regions are 33% glycine) and proline, occurring predominantly as 3-hydroxyproline (about 20%).

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collagen-containing extracellular matrix [GO_0062023]

An extracellular matrix consisting mainly of proteins (especially collagen) and glycosaminoglycans (mostly as proteoglycans) that provides not only essential physical scaffolding for the cellular constituents but can also initiate crucial biochemical and biomechanical cues required for tissue morphogenesis, differentiation and homeostasis. The components are secreted by cells in the vicinity and form a sheet underlying or overlying cells such as endothelial and epithelial cells.

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columnar/cuboidal epithelial cell development [GO_0002066]

The process whose specific outcome is the progression of a columnar/cuboidal epithelial cell over time, from its formation to the mature structure. A columnar/cuboidal epithelial cell is a cell usually found in a two dimensional sheet with a free surface. Columnar/cuboidal epithelial cells take on the shape of a column or cube.

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columnar/cuboidal epithelial cell differentiation [GO_0002065]

The process in which a relatively unspecialized cell acquires specialized features of a columnar/cuboidal epithelial cell. A columnar/cuboidal epithelial cell is a cell usually found in a two dimensional sheet with a free surface. Columnar/cuboidal epithelial cells take on the shape of a column or cube.

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columnar/cuboidal epithelial cell maturation [GO_0002069]

The developmental process, independent of morphogenetic (shape) change, that is required for a columna/cuboidal epithelial cell to attain its fully functional state. A columnar/cuboidal epithelial cell is a cell usually found in a two dimensional sheet with a free surface. Columnar/cuboidal epithelial cells take on the shape of a column or cube.

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compound eye development [GO_0048749]

The process whose specific outcome is the progression of the compound eye over time, from its formation to the mature structure. The compound eye is an organ of sight that contains multiple repeating units, often arranged hexagonally. Each unit has its own lens and photoreceptor cell(s) and can generate either a single pixelated image or multiple images, per eye.

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Concentrative transport (import) of a nucleoside and two sodium ions by solute carrier family 28 (sodium-coupled nucleoside transporter), member 3 [GO_0005415]

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: nucleoside(out) + Na+(out) = nucleoside(in) + Na+(in).

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Core MLL complex methylates H3K4Me2-Nucleosome at the GP1BA gene promoter [GO_0042800]

Catalysis of the reaction: S-adenosyl-L-methionine + histone H3 L-lysine (position 4) = S-adenosyl-L-homocysteine + histone H3 N6-methyl-L-lysine (position 4). This reaction is the addition of a methyl group to the lysine residue at position 4 of the histone H3 protein. Note that in some species, the methyl group may be added to a lysine in a slightly different position of the histone H3 protein, but that this term still applies.

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Core MLL complex, SMYD3, PRDM9 methylate dimethyl-lysine-5 of histone H3 (H3K4) [GO_0018024]

Catalysis of the reaction: S-adenosyl-L-methionine + histone L-lysine = S-adenosyl-L-homocysteine + histone N6-methyl-L-lysine. The methylation of peptidyl-lysine in histones forms N6-methyl-L-lysine, N6,N6-dimethyl-L-lysine and N6,N6,N6-trimethyl-L-lysine derivatives.

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CP2 mannose-ethanolamine phosphotransferase activity [GO_0051267]

Catalysis of the reaction: ethanolamine phosphate + Man-alpha-(1,2)-Man-alpha-(1,2)-Man-alpha-(1,6)-R = Man-alpha-(1,2)-Man-alpha-6-P-EtN-(1,2)-Man-alpha-(1,6)-R; R is Man-alpha(1,4)-GlcNH2-inositol-PO4-lipid. This reaction is the transfer of ethanolamine phosphate to C6 of second mannose in the GPI lipid precursor CP2.

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cranial nerve development [GO_0021545]

The process whose specific outcome is the progression of the cranial nerves over time, from its formation to the mature structure. The cranial nerves are composed of twelve pairs of nerves that emanate from the nervous tissue of the hindbrain. These nerves are sensory, motor, or mixed in nature, and provide the motor and general sensory innervation of the head, neck and viscera. They mediate vision, hearing, olfaction and taste and carry the parasympathetic innervation of the autonomic ganglia that control visceral functions.

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cranial nerve formation [GO_0021603]

The process that gives rise to the cranial nerves. This process pertains to the initial formation of a structure from unspecified parts. The cranial nerves are composed of twelve pairs of nerves that emanate from the nervous tissue of the hindbrain. These nerves are sensory, motor, or mixed in nature, and provide the motor and general sensory innervation of the head, neck and viscera. They mediate vision, hearing, olfaction and taste and carry the parasympathetic innervation of the autonomic ganglia that control visceral functions.

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cranial nerve maturation [GO_0021605]

A developmental process, independent of morphogenetic (shape) change, that is required for a cranial nerve to attain its fully functional state. The cranial nerves are composed of twelve pairs of nerves that emanate from the nervous tissue of the hindbrain. These nerves are sensory, motor, or mixed in nature, and provide the motor and general sensory innervation of the head, neck and viscera. They mediate vision, hearing, olfaction and taste and carry the parasympathetic innervation of the autonomic ganglia that control visceral functions.

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cranial nerve morphogenesis [GO_0021602]

The process in which the anatomical structure of the cranial nerves are generated and organized. The cranial nerves are composed of twelve pairs of nerves that emanate from the nervous tissue of the hindbrain. These nerves are sensory, motor, or mixed in nature, and provide the motor and general sensory innervation of the head, neck and viscera. They mediate vision, hearing, olfaction and taste and carry the parasympathetic innervation of the autonomic ganglia that control visceral functions.

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cyclin-dependent protein kinase activity [GO_0097472]

Cyclin-dependent catalysis of the phosphorylation of an amino acid residue in a protein, usually according to the reaction: a protein + ATP = a phosphoprotein + ADP. This reaction requires the binding of a regulatory cyclin subunit and full activity requires stimulatory phosphorylation by a CDK-activating kinase (CAK).

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cysteine-type endopeptidase activator activity involved in apoptotic process [GO_0008656]

Binds to and increases the rate of proteolysis catalyzed by a cysteine-type endopeptidase involved in the apoptotic process. Examples of this are 1) granzymes that may bind to initiator caspases and cleave them, and 2) already active caspases, e.g. caspase 9, that cleave effector caspases.

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cysteine-type endopeptidase activity involved in apoptotic signaling pathway [GO_0097199]

Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile, and contributing to the apoptotic signaling pathway. Examples of gene products that may be annotated to this term include CASP2, CASP8, CASP9, and CASP10, also called initiator (or apical, or activator) caspases.

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cysteine-type endopeptidase activity involved in execution phase of apoptosis [GO_0097200]

Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile, and contributing to the execution phase of apoptosis. Examples of gene products that may be annotated to this term include CASP3, CASP6 and CASP7, also called effector (or executioner) caspases.

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cytokinesis [GO_0000910]

The division of the cytoplasm and the plasma membrane of a cell and its partitioning into two daughter cells. Note that this term should not be used for direct annotation. When annotating eukaryotic species, mitotic or meiotic cytokinesis should always be specified for manual annotation and for prokaryotic species use ‘FtsZ-dependent cytokinesis ; GO:0043093’ or Cdv-dependent cytokinesis ; GO:0061639. Also, note that cytokinesis does not necessarily result in physical separation and detachment of the two daughter cells from each other.

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cytoskeleton [GO_0005856]

Any of the various filamentous elements that form the internal framework of cells, and typically remain after treatment of the cells with mild detergent to remove membrane constituents and soluble components of the cytoplasm. The term embraces intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles.

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death domain binding [GO_0070513]

Binding to a death domain of a protein. The death domain (DD) is a homotypic protein interaction module composed of a bundle of six alpha-helices. DD bind each other forming oligomers. Some DD-containing proteins are involved in the regulation of apoptosis and inflammation through their activation of caspases and NF-kappaB. For binding to the death effector domain, consider instead the term ‘death effector domain binding ; GO:0035877’.

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decarboxylation-driven active transmembrane transporter activity [GO_0015451]

Primary active transport of a solute across a membrane driven by decarboxylation of a cytoplasmic substrate. Primary active transport is catalysis of the transport of a solute across a membrane, up the solute’s concentration gradient, by binding the solute and undergoing a series of conformational changes. Transport works equally well in either direction and is driven by a primary energy source.

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Defective ABCC9 (in KCNJ11:ABCC9) does not transport K+ from extracellular region to cytosol [GO_0005242]

Enables the transmembrane transfer of a potassium ion by an inwardly-rectifying voltage-gated channel. An inwardly rectifying current-voltage relation is one where at any given driving force the inward flow of K+ ions exceeds the outward flow for the opposite driving force. The inward-rectification is due to a voltage-dependent block of the channel pore by a specific ligand or ligands, and as a result the macroscopic conductance depends on the difference between membrane voltage and the K+ equilibrium potential rather than on membrane voltage itself.

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Defective SLC5A7 does not cotransport Cho, Cl-, Na+ from extracellular region to cytosol [GO_0015220]

Enables the transfer of choline from one side of a membrane to the other. Choline (2-hydroxyethyltrimethylammonium) is an amino alcohol that occurs widely in living organisms as a constituent of certain types of phospholipids and in the neurotransmitter acetylcholine.

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Deglycosylation complex hydrolyses N-glycans from unfolded glycoproteins [GO_0000224]

Catalysis of the reaction: 4-N-(N-acetyl-D-glucosaminyl)-protein + H2O = N-acetyl-beta-D-glucosaminylamine + peptide L-aspartate. This reaction is the hydrolysis of an N4-(acetyl-beta-D-glucosaminyl)asparagine residue in which the N-acetyl-D-glucosamine residue may be further glycosylated, to yield a (substituted) N-acetyl-beta-D-glucosaminylamine and the peptide containing an aspartic residue.

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descending aorta development [GO_0035906]

The progression of the descending aorta over time, from its initial formation to the mature structure. The descending aorta is the portion of the aorta in a two-pass circulatory system from the arch of aorta to the point where it divides into the common iliac arteries. In a two-pass circulatory system blood passes twice through the heart to supply the body once.

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descending aorta morphogenesis [GO_0035911]

The process in which the anatomical structures of the descending aorta are generated and organized. The descending aorta is the portion of the aorta in a two-pass circulatory system from the arch of aorta to the point where it divides into the common iliac arteries. In a two-pass circulatory system blood passes twice through the heart to supply the body once.

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detection of mechanical stimulus involved in equilibrioception [GO_0050973]

The series of events involved in equilibrioception in which a mechanical stimulus is received and converted into a molecular signal. During equilibrioception, mechanical stimuli may be in the form of input from pressure receptors or from the labyrinth system of the inner ears.

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DHPS tetramer synthesizes EIF5A and spermidine from Dhp-K50-EIF5A [GO_0034038]

Catalysis of the reaction: [eIF5A-precursor]-lysine + spermidine = [eIF5A-precursor]-deoxyhypusine + propane-1,3-diamine. Four sub-reactions have been identified,in which the intermediates remain tightly associated with the enzyme: spermidine + NAD+ = dehydrospermidine + NADH; dehydrospermidine + [enzyme]-lysine = N-(4-aminobutylidene)-[enzyme]-lysine + propane-1,3-diamine; N-(4-aminobutylidene)-[enzyme]-lysine + [eIF5A-precursor]-lysine = N-(4-aminobutylidene)-[eIF5A-precursor]-lysine + [enzyme]-lysine; N-(4-aminobutylidene)-[eIF5A-precursor]-lysine + NADH + H+ = [eIF5A-precursor]-deoxyhypusine + NAD+. Note that this term is equivalent to the obsolete molecular function term ‘deoxyhypusine synthase activity ; GO:0004171’ and corresponds closely to the biological process term ‘deoxyhypusine biosynthetic process from spermidine, using deoxyhypusine synthase ; GO:0050983’.

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digestive system development [GO_0055123]

The process whose specific outcome is the progression of the digestive system over time, from its formation to the mature structure. The digestive system is the entire structure in which digestion takes place. Digestion is all of the physical, chemical, and biochemical processes carried out by multicellular organisms to break down ingested nutrients into components that may be easily absorbed and directed into metabolism.

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DNA biosynthetic process [GO_0071897]

The cellular DNA metabolic process resulting in the formation of DNA, deoxyribonucleic acid, one of the two main types of nucleic acid, consisting of a long unbranched macromolecule formed from one or two strands of linked deoxyribonucleotides, the 3’-phosphate group of each constituent deoxyribonucleotide being joined in 3’,5’-phosphodiester linkage to the 5’-hydroxyl group of the deoxyribose moiety of the next one.

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DNA recombination [GO_0006310]

Any process in which a new genotype is formed by reassortment of genes resulting in gene combinations different from those that were present in the parents. In eukaryotes genetic recombination can occur by chromosome assortment, intrachromosomal recombination, or nonreciprocal interchromosomal recombination. Interchromosomal recombination occurs by crossing over. In bacteria it may occur by genetic transformation, conjugation, transduction, or F-duction.

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DNA repair [GO_0006281]

The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.

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DNA replication [GO_0006260]

The cellular metabolic process in which a cell duplicates one or more molecules of DNA. DNA replication begins when specific sequences, known as origins of replication, are recognized and bound by initiation proteins, and ends when the original DNA molecule has been completely duplicated and the copies topologically separated. The unit of replication usually corresponds to the genome of the cell, an organelle, or a virus. The template for replication can either be an existing DNA molecule or RNA. DNA biosynthesis is only part of this process. See also the biological process terms ‘DNA-dependent DNA replication ; GO:0006261’ and ‘RNA-dependent DNA replication ; GO:0006278’.

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DNA topoisomerase type I (single strand cut, ATP-independent) activity [GO_0003917]

Catalysis of a DNA topological transformation by transiently cleaving one DNA strand at a time to allow passage of another strand; changes the linking number by +1 per catalytic cycle. Note that a further distinction, between type IA and type IB topoisomerases, is based on sequence or structural similarity between gene products that possess type I catalytic activity.

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DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activator activity [GO_0072587]

Binds to and increases the activity of ATP-hydrolyzing DNA topoisomerase. DNA topoisomerase (ATP-hydrolyzing) regulator activity catalyzes a DNA topological transformation by transiently cleaving a pair of complementary DNA strands to form a gate through which a second double-stranded DNA segment is passed, after which the severed strands in the first DNA segment are rejoined; product release is coupled to ATP binding and hydrolysis; changes the linking number in multiples of 2.

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DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity [GO_0003918]

Catalysis of a DNA topological transformation by transiently cleaving a pair of complementary DNA strands to form a gate through which a second double-stranded DNA segment is passed, after which the severed strands in the first DNA segment are rejoined, driven by ATP hydrolysis. The enzyme changes the linking number in multiples of 2.

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DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) inhibitor activity [GO_0008657]

Binds to and stops, prevents or reduces the activity of ATP-hydrolyzing DNA topoisomerase. ATP-hydrolyzing DNA topoisomerase catalyzes the DNA topological transformation by transiently cleaving a pair of complementary DNA strands to form a gate through which a second double-stranded DNA segment is passed, after which the severed strands in the first DNA segment are rejoined; product release is coupled to ATP binding and hydrolysis; changes the linking number in multiples of 2.

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DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) regulator activity [GO_0072586]

Binds to and modulates the activity of ATP-hydrolyzing DNA topoisomerase. DNA topoisomerase (ATP-hydrolyzing) regulator activity catalyzes a DNA topological transformation by transiently cleaving a pair of complementary DNA strands to form a gate through which a second double-stranded DNA segment is passed, after which the severed strands in the first DNA segment are rejoined; product release is coupled to ATP binding and hydrolysis; changes the linking number in multiples of 2.

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DNA translocase activity [GO_0015616]

Generation of movement along a single- or double-stranded DNA molecule, driven by ATP hydrolysis. Note that some gene products that possess DNA translocase activity, such as members of the FtsK/SpoIIIE family, can be fixed in place by interactions with other components of the cell; the relative movement between the protein and DNA bound to it results in movement of the DNA within the cell, often across a membrane.

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DNA-binding transcription factor activity [GO_0003700]

A transcription regulator activity that modulates transcription of gene sets via selective and non-covalent binding to a specific double-stranded genomic DNA sequence (sometimes referred to as a motif) within a cis-regulatory region. Regulatory regions include promoters (proximal and distal) and enhancers. Genes are transcriptional units, and include bacterial operons. Usage guidance: Most DNA-binding transcription factors do not have enzymatic activity. The presence of specific DNA-binding domains known to be present in DNA-binding transcription factors (HOX, GATA etc) should be used to help decide whether a protein is a DNA binding transcription factor or a coregulator. If a protein has an enzymatic activity (for example, ubiquitin ligase, histone acetyl transferase) and no known DNA binding domain, consider annotating to GO:0003712 transcription coregulator activity. Special care should be taken with proteins containing zinc fingers, Myb/SANT and ARID domains, since only a subset of proteins containing these domains directly and selectively bind to regulatory DNA motifs in cis-regulatory regions.

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DNA-templated transcription initiation [GO_0006352]

The initial step of transcription, consisting of the assembly of the RNA polymerase preinitiation complex (PIC) at a gene promoter, as well as the formation of the first few bonds of the RNA transcript. Transcription initiation includes abortive initiation events, which occur when the first few nucleotides are repeatedly synthesized and then released, and ends when promoter clearance takes place. Note that promoter clearance is represented as a separate step, not part_of either initiation or elongation.

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dol-P-Man:Man(5)GlcNAc(2)-PP-Dol alpha-1,3-mannosyltransferase activity [GO_0052925]

Catalysis of the reaction: an alpha-D-man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-(alpha-D-Man-(1->6))-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc-diphosphodolichol + dolichyl D-mannosyl phosphate = H+ + alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-(alpha-D-Man-(1->3)-alpha-D-Man-(1->6))-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc-diphosphodolichol + dolichyl phosphate.

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dolichyl pyrophosphate Glc1Man9GlcNAc2 alpha-1,3-glucosyltransferase activity [GO_0042283]

Catalysis of the addition of the second glucose residue to the lipid-linked oligosaccharide precursor for N-linked glycosylation; the transfer of glucose from dolichyl phosphate glucose (Dol-P-Glc) on to the lipid-linked oligosaccharide Glc(1)Man(9)GlcNAc(2)-PP-Dol.

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dolichyl pyrophosphate Glc2Man9GlcNAc2 alpha-1,2-glucosyltransferase activity [GO_0106073]

Catalysis of the addition of the third glucose residue to the lipid-linked oligosaccharide precursor for N-linked glycosylation; the transfer of glucose from dolichyl phosphate glucose (Dol-P-Glc) on to the lipid-linked oligosaccharide Glc(2)Man(9)GlcNAc(2)-PP-Dol.

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dolichyl pyrophosphate Man9GlcNAc2 alpha-1,3-glucosyltransferase activity [GO_0042281]

Catalysis of the addition of the first glucose residue to the lipid-linked oligosaccharide precursor for N-linked glycosylation; the transfer of glucose from dolichyl phosphate glucose (Dol-P-Glc) on to the lipid-linked oligosaccharide Man(9)GlcNAc(2)-PP-Dol.

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dormancy process [GO_0022611]

A developmental process in which dormancy (sometimes called a dormant state) is induced, maintained or broken. Dormancy is a suspension of most physiological activity and growth that can be reactivated. In plants and animals, dormancy may be a response to environmental conditions such as seasonality or extreme heat, drought, or cold. In plants, dormancy may involve the formation of dormant buds, and may be preceded by the senescence of plant parts such as leaves in woody plants or most of the shoot system in herbaceous perennials. The exit from dormancy in vascular plants is marked by resumed growth of buds and/or growth of vascular cambium.

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dorsal/ventral axis specification [GO_0009950]

The establishment, maintenance and elaboration of the dorsal/ventral axis. The dorsal/ventral axis is defined by a line that runs orthogonal to both the anterior/posterior and left/right axes. The dorsal end is defined by the upper or back side of an organism. The ventral end is defined by the lower or front side of an organism.

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dorsal/ventral pattern formation [GO_0009953]

The regionalization process in which the areas along the dorsal/ventral axis are established that will lead to differences in cell differentiation. The dorsal/ventral axis is defined by a line that runs orthogonal to both the anterior/posterior and left/right axes. The dorsal end is defined by the upper or back side of an organism. The ventral end is defined by the lower or front side of an organism.

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ecdysteroid 25-hydroxylase activity [GO_0035302]

Catalysis of the hydroxylation of an ecdysteroid at carbon position 25. Ecdysteroids are a group of polyhydroxylated ketosteroids which initiate post-embryonic development, particularly metamorphosis, in insects and other arthropods. Note that in the ecdysteroidogenic pathway, this activity catalyzes the conversion of 2,22,25-trideoxyecdysone (3-beta,5-beta-ketodiol) to 2,22-dideoxyecdysone (3-beta,5-beta-ketotriol).

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electron transfer activity [GO_0009055]

Any molecular entity that serves as an electron acceptor and electron donor in an electron transport chain. An electron transport chain is a process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient. Note that this term should only be be used for electron transfer that generates a transmembrane electrochemical gradient, e.g. components of the respiratory or photosynthetic electron transport chain.

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embryo development [GO_0009790]

The process whose specific outcome is the progression of an embryo from its formation until the end of its embryonic life stage. The end of the embryonic stage is organism-specific. For example, for mammals, the process would begin with zygote formation and end with birth. For insects, the process would begin at zygote formation and end with larval hatching. For plant zygotic embryos, this would be from zygote formation to the end of seed dormancy. For plant vegetative embryos, this would be from the initial determination of the cell or group of cells to form an embryo until the point when the embryo becomes independent of the parent plant.

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embryo development ending in birth or egg hatching [GO_0009792]

The process whose specific outcome is the progression of an embryo over time, from zygote formation until the end of the embryonic life stage. The end of the embryonic life stage is organism-specific and may be somewhat arbitrary; for mammals it is usually considered to be birth, for insects the hatching of the first instar larva from the eggshell.

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embryonic organ development [GO_0048568]

Development, taking place during the embryonic phase, of a tissue or tissues that work together to perform a specific function or functions. Development pertains to the process whose specific outcome is the progression of a structure over time, from its formation to the mature structure. Organs are commonly observed as visibly distinct structures, but may also exist as loosely associated clusters of cells that work together to perform a specific function or functions.

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embryonic organ morphogenesis [GO_0048562]

Morphogenesis, during the embryonic phase, of a tissue or tissues that work together to perform a specific function or functions. Morphogenesis is the process in which anatomical structures are generated and organized. Organs are commonly observed as visibly distinct structures, but may also exist as loosely associated clusters of cells that work together to perform a specific function or functions.

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endocardial cell differentiation [GO_0060956]

The process in which a relatively unspecialized cell acquires the specialized structural and/or functional features of an endocardial cell. An endocardial cell is a specialized endothelial cell that makes up the endocardium portion of the heart. The endocardium is the innermost layer of tissue of the heart, and lines the heart chambers.

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endocrine system development [GO_0035270]

Progression of the endocrine system over time, from its formation to a mature structure. The endocrine system is a system of hormones and ductless glands, where the glands release hormones directly into the blood, lymph or other intercellular fluid, and the hormones circulate within the body to affect distant organs. The major glands that make up the human endocrine system are the hypothalamus, pituitary, thyroid, parathryoids, adrenals, pineal body, and the reproductive glands which include the ovaries and testes.

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endomitotic cell cycle [GO_0007113]

A mitotic cell cycle in which chromosomes are replicated and sister chromatids separate, but spindle formation, nuclear membrane breakdown and nuclear division do not occur, resulting in an increased number of chromosomes in the cell. Note that this term should not be confused with ‘abortive mitotic cell cycle ; GO:0033277’. Although abortive mitosis is sometimes called endomitosis, GO:0033277 refers to a process in which a mitotic spindle forms and chromosome separation begins.

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endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 3'-phosphomonoesters [GO_0016894]

Catalysis of the hydrolysis of ester linkages within nucleic acids by creating internal breaks to yield 3’-phosphomonoesters. Note that this activity can catalyze cleavage of DNA or RNA.

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endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters [GO_0016893]

Catalysis of the hydrolysis of ester linkages within nucleic acids by creating internal breaks to yield 5’-phosphomonoesters. Note that this activity can catalyze cleavage of DNA or RNA.

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endothelium development [GO_0003158]

The process whose specific outcome is the progression of an endothelium over time, from its formation to the mature structure. Endothelium refers to the layer of cells lining blood vessels, lymphatics, the heart, and serous cavities, and is derived from bone marrow or mesoderm. Corneal endothelium is a special case, derived from neural crest cells.

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entry into diapause [GO_0055115]

The dormancy process that results in entry into diapause. Diapause is a neurohormonally mediated, dynamic state of low metabolic activity. Associated characteristics of this form of dormancy include reduced morphogenesis, increased resistance to environmental extremes, and altered or reduced behavioral activity. Full expression develops in a species-specific manner, usually in response to a number of environmental stimuli that precede unfavorable conditions. Once diapause has begun, metabolic activity is suppressed even if conditions favorable for development prevail. Once initiated, only certain stimuli are capable of releasing the organism from this state, and this characteristic is essential in distinguishing diapause from hibernation.

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entry into reproductive diapause [GO_0055116]

The dormancy process that results in entry into reproductive diapause. Reproductive diapause is a form of diapause where the organism itself will remain fully active, including feeding and other routine activities, but the reproductive organs experience a tissue-specific reduction in metabolism, with characteristic triggering and releasing stimuli.

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Envoplakin, periplakin, involucrin, SPR binding mediated by TGM1 crosslinking [GO_0003810]

Catalysis of the reaction: protein glutamine + alkylamine = protein N5-alkylglutamine + NH3. This reaction is the formation of the N6-(L-isoglutamyl)-L-lysine isopeptide, resulting in cross-linking polypeptide chains; the gamma-carboxamide groups of peptidyl-glutamine residues act as acyl donors, and the 6-amino-groups of peptidyl-lysine residues act as acceptors, to give intra- and intermolecular N6-(5-glutamyl)lysine cross-links.

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enzyme-linked receptor protein signaling pathway [GO_0007167]

The series of molecular signals initiated by an extracellular ligand binding to a receptor on the surface of the target cell, where the receptor possesses catalytic activity or is closely associated with an enzyme such as a protein kinase, and ending with the regulation of a downstream cellular process, e.g. transcription.

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epidermis development [GO_0008544]

The process whose specific outcome is the progression of the epidermis over time, from its formation to the mature structure. The epidermis is the outer epithelial layer of an animal, it may be a single layer that produces an extracellular material (e.g. the cuticle of arthropods) or a complex stratified squamous epithelium, as in the case of many vertebrate species.

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epigenetic maintenance of chromatin in transcription-competent conformation [GO_0045815]

An epigenetic process that capacitates gene expression by remodelling of chromatin by either modifying the chromatin fiber, the nucleosomal histones, or the DNA. This regulation is exemplified by members of the trithorax group, which maintain the active state of homeotic gene transcription. Do not confuse with GO:0140673 ; co-transcriptional chromatin reassembly, which describes the reforming of chromatin after RNA polymerase II passage.

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epithelial tube morphogenesis [GO_0060562]

The process in which the anatomical structures of a tube are generated and organized from an epithelium. Epithelial tubes transport gases, liquids and cells from one site to another and form the basic structure of many organs and tissues, with tube shape and organization varying from the single-celled excretory organ in Caenorhabditis elegans to the branching trees of the mammalian kidney and insect tracheal system.

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Equilibrative transport (export) of nucleosides and free bases by solute carrier family 29 (nucleoside transporters), member 1 [GO_0005337]

Enables the transfer of a nucleoside, a nucleobase linked to either beta-D-ribofuranose (ribonucleoside) or 2-deoxy-beta-D-ribofuranose, (a deoxyribonucleotide) from one side of a membrane to the other.

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equilibrioception [GO_0050957]

The series of events required for an organism to receive an orientational stimulus, convert it to a molecular signal, and recognize and characterize the signal. Equilibrioception refers to a combination of processes by which an organism can perceive its orientation with respect to gravity. In animals, stimuli come from labyrinth system of the inner ears, monitoring the direction of motion; visual stimuli, with information on orientation and motion; pressure receptors, which tell the organism which body surfaces are in contact with the ground; and proprioceptive cues, which report which parts of the body are in motion.

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execution phase of apoptosis [GO_0097194]

A stage of the apoptotic process that starts with the controlled breakdown of the cell through the action of effector caspases or other effector molecules (e.g. cathepsins, calpains etc.). Key steps of the execution phase are rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.

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exocytosis [GO_0006887]

A process of secretion by a cell that results in the release of intracellular molecules (e.g. hormones, matrix proteins) contained within a membrane-bounded vesicle. Exocytosis can occur either by full fusion, when the vesicle collapses into the plasma membrane, or by a kiss-and-run mechanism that involves the formation of a transient contact, a pore, between a granule (for exemple of chromaffin cells) and the plasma membrane. The latter process most of the time leads to only partial secretion of the granule content. Exocytosis begins with steps that prepare vesicles for fusion with the membrane (tethering and docking) and ends when molecules are secreted from the cell.

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exonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters [GO_0016796]

Catalysis of the hydrolysis of ester linkages within nucleic acids by removing nucleotide residues from the 3’ or 5’ end to yield 5’ phosphomonoesters. Note that this activity can catalyze cleavage of DNA or RNA.

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extracellular exosome assembly [GO_0071971]

The aggregation, arrangement and bonding together of a set of components to form an extracellular vesicular exosome, a membrane-bounded vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Exosomes are defined by their size, which generally ranges from 30 nm to 100 nm.

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extracellular matrix organization involved in endocardium development [GO_0061148]

A process which results in the assembly, arrangement of constituent parts, or disassembly of an extracellular matrix of the endocardium. The endocardium is an anatomical structure comprised of an endothelium and an extracellular matrix that forms the innermost layer of tissue of the heart, and lines the heart chambers.

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extracellular region [GO_0005576]

The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite. Note that this term is intended to annotate gene products that are not attached to the cell surface. For gene products from multicellular organisms which are secreted from a cell but retained within the organism (i.e. released into the interstitial fluid or blood), consider the cellular component term ’extracellular space ; GO:0005615'.

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extracellular space [GO_0005615]

That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid. Note that for multicellular organisms, the extracellular space refers to everything outside a cell, but still within the organism (excluding the extracellular matrix). Gene products from a multi-cellular organism that are secreted from a cell into the interstitial fluid or blood can therefore be annotated to this term.

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extracellular structure organization [GO_0043062]

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of structures in the space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane, and also covers the host cell environment outside an intracellular parasite.

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extracellular vesicle biogenesis [GO_0140112]

The assembly and secretion a set of components to form an extracellular vesicule, a membrane-bounded vesicle that is released into the extracellular region. Extracellular vesicles include exosomes, microvesicles and apoptotic bodies, based on the mechanism by which they are released from cells and differentiated based on their size and content.

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extracellularly glutamate-gated chloride channel activity [GO_0008068]

Enables the transmembrane transfer of a chloride ion by a channel that opens when glutamate is bound by the channel complex or one of its constituent parts on the extracellular side of the plasma membrane. Note that this term represents an activity and not a gene product. Consider also annotating to the molecular function term ‘glutamate receptor activity ; GO:0008066’.

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extracellularly glutamate-gated ion channel activity [GO_0005234]

Enables the transmembrane transfer of an ion by a channel that opens when glutamate is bound by the channel complex or one of its constituent parts on the extracellular side of the plasma membrane. Note that this term represents an activity and not a gene product. Consider also annotating to the molecular function term ‘glutamate receptor activity ; GO:0008066’.

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FAD transmembrane transport [GO_0035350]

The process in which flavin-adenine dinucleotide (FAD) is transported across a membrane. FAD forms the coenzyme of the prosthetic group of various flavoprotein oxidoreductase enzymes, in which it functions as an electron acceptor by being reversibly converted to its reduced form. Note that this term is not intended for use in annotating lateral movement within membranes.

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farnesyltranstransferase activity [GO_0004311]

Catalysis of the reaction: 2-trans,6-trans-farnesyl diphosphate + isopentenyl diphosphate = diphosphate + geranylgeranyl diphosphate. The catalyzed reaction forms (free) geranylgeranyl diphosphate. There is no relationship between this activity and protein farnesyltransferase activity, GO:0004660, where the catalyzed reaction transfers a farnesyl group from farnesyl diphosphate to a target protein.

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fatty acid biosynthetic process [GO_0006633]

The chemical reactions and pathways resulting in the formation of a fatty acid, any of the aliphatic monocarboxylic acids that can be liberated by hydrolysis from naturally occurring fats and oils. Fatty acids are predominantly straight-chain acids of 4 to 24 carbon atoms, which may be saturated or unsaturated; branched fatty acids and hydroxy fatty acids also occur, and very long chain acids of over 30 carbons are found in waxes.

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female meiotic nuclear division [GO_0007143]

A cell cycle process by which the cell nucleus divides as part of a meiotic cell cycle in the female germline. Note that female germ lines can be found in female or hermaphroditic organisms, so this term can be used to annotate gene products from hermaphrodites such as those of C. elegans. See also the biological process term ‘meiotic nuclear division; GO:0140013’.

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fibrin multimer, crosslinked:tissue plasminogen activator (one-chain) + plasminogen activator inhibitor 1 -> fibrin multimer, crosslinked:tissue plasminogen activator (one-chain):plasminogen activator inhibitor 1 [GO_0004867]

Binds to and stops, prevents or reduces the activity of a serine-type endopeptidase.

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fibroblast growth factor receptor activity [GO_0005007]

Combining with a fibroblast growth factor receptor ligand and transmitting the signal across the plasma membrane to initiate a change in cell activity. Note that this term represents an activity and not a gene product, and should only be used when the receptor binds the ligand FGF. For receptors that bind other growth factors, consider annotating to terms under ’transmembrane signaling receptor activity ; GO:0004888.

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filamin binding [GO_0031005]

Binding to a filamin, any member of a family of high molecular mass cytoskeletal proteins that crosslink actin filaments to form networks and stress fibers. Filamins contain an amino-terminal alpha-actinin-like actin binding domain, which is followed by a rod-domain composed of 4 to 24 100-residue repetitive segments including a carboxy-terminal dimerization domain.

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first spliceosomal transesterification activity [GO_0000384]

Catalysis of the first transesterification reaction of spliceosomal mRNA splicing. The intron branch site adenosine is the nucleophile attacking the 5’ splice site, resulting in cleavage at this position. In cis splicing, this is the step that forms a lariat structure of the intron RNA, while it is still joined to the 3’ exon.

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flippase activity [GO_0140327]

Catalysis of the movement of lipids from the exoplasmic to the cytosolic leaftlet of a membrane, using energy from the hydrolysis of ATP. Nomenclature note. Flippases and floppases are ATP-dependent transbilayer lipid translocators. According to an extensively used, though not universal, nomenclature, they catalyze lipid transfer towards the inward monolayer (flippases) or towards the outward monolayer (floppases). Scramblases are ATP-independent, non-selective, inducing non-specific transbilayer movements across the membrane. The direction of the translocation should be taken into account for annotation (from the exoplasmic to the cytosolic leaftlet of a membrane).

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G protein activity [GO_0003925]

A molecular function regulator that cycles between active GTP-bound and inactive GDP-bound states. In its active state, binds to a variety of effector proteins to regulate cellular processes. Intrinsic GTPase activity returns the G protein to its GDP-bound state. The return to the GDP-bound state can be accelerated by the action of a GTPase-activating protein (GAP).

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G protein-coupled acetylcholine receptor signaling pathway involved in positive regulation of acetylcholine secretion, neurotransmission [GO_1904065]

Any G protein-coupled acetylcholine receptor signaling pathway that is involved in positive regulation of acetylcholine secretion, neurotransmission.

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G protein-coupled receptor signaling pathway [GO_0007186]

A series of molecular signals that proceeds with an activated receptor promoting the exchange of GDP for GTP on the alpha-subunit of an associated heterotrimeric G-protein complex. The GTP-bound activated alpha-G-protein then dissociates from the beta- and gamma-subunits to further transmit the signal within the cell. The pathway begins with receptor-ligand interaction, or for basal GPCR signaling the pathway begins with the receptor activating its G protein in the absence of an agonist, and ends with regulation of a downstream cellular process, e.g. transcription. The pathway can start from the plasma membrane, Golgi or nuclear membrane.

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G-quadruplex DNA binding [GO_0051880]

Binding to G-quadruplex DNA structures, in which groups of four guanines adopt a flat, cyclic Hoogsteen hydrogen-bonding arrangement known as a guanine tetrad. The stacking of guanine tetrads results in G-quadruplex DNA structures. G-quadruplex DNA can form under physiological conditions from some G-rich sequences, such as those found in telomeres, immunoglobulin switch regions, gene promoters, fragile X repeats, and the dimerization domain in the human immunodeficiency virus (HIV) genome.

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GABA-A receptor activity [GO_0004890]

Combining with the amino acid gamma-aminobutyric acid (GABA, 4-aminobutyrate) to initiate a change in cell activity. GABA-A receptors function as chloride channels. Note that this term represents an activity and not a gene product. Consider also annotating to the molecular function term ‘chloride channel activity ; GO:0005254’ and ‘inhibitory extracellular ligand-gated ion channel activity ; GO:0005237’.

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gamma-aminobutyric acid:sodium:chloride symporter activity [GO_0005332]

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: gamma-aminobutyric acid(out) + Na+(out) + Cl-(out) = gamma-aminobutyric acid(in) + Na+(in) + Cl(in). See also the molecular function term ’neurotransmitter:sodium symporter activity ; GO:0005328'.

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gastro-intestinal system smooth muscle contraction [GO_0014831]

A process in which force is generated within smooth muscle tissue, resulting in a change in muscle geometry. This process occurs in the gastro-intestinal system. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. The gastro-intestinal system generally refers to the digestive structures stretching from the mouth to anus, but does not include the accessory glandular organs (liver, pancreas and biliary tract).

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GDP-Man:Man3GlcNAc2-PP-Dol alpha-1,2-mannosyltransferase activity [GO_0004377]

Catalysis of the reaction: an alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc-diphosphodolichol + 2 GDP-alpha-D-mannose = an alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc-diphosphodolichol + 2 GDP + 2 H+. This reaction is the transfer of an alpha-D-mannosyl residue from GDP-mannose into lipid-linked oligosaccharide, forming an alpha-(1->2)-D-mannosyl-D-mannose linkage.

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gene expression involved in extracellular matrix organization [GO_1901148]

Any gene expression that is involved in extracellular matrix organization. Gene expression includes both transcription to produce an RNA transcript, and the translation of that mRNA into protein. Protein maturation is included in gene expression when required to form an active form of a product from an inactive precursor form.

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general transcription initiation factor activity [GO_0140223]

A molecular function required for core promoter activity that mediates the assembly of the RNA polymerase holoenzyme at promoter DNA to form the pre-initiation complex (PIC). General transcription factors (GTFs) bind to and open promoter DNA, initiate RNA synthesis and stimulate the escape of the polymerase from the promoter. Not all subunits of the general transcription factor are necessarily present at all promoters to initiate transcription. GTFs act at each promoter, although the exact subunit composition at individual promoters may vary. Usage guidance: The distinction between general transcription factors and DNA-binding transcription factors is that the latter modulate the selection of which genes are expressed under specific conditions, while general transcription factors are the constitutive machinery required for transcription initiation.

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geranyltranstransferase activity [GO_0004337]

Catalysis of the reaction: geranyl diphosphate + isopentenyl diphosphate = 2-trans,6-trans-farnesyl diphosphate + diphosphate. Note that this is the second step in the formation of farnesyl diphosphate. The first step is ‘dimethylallyltransferase activity ; GO:0004161’. Consider also annotating to the biological process term ‘farnesyl diphosphate biosynthetic process ; GO:0045337’.

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Glc6P is isomerised to I3P by ISYNA1 in the cytosol [GO_0004512]

Catalysis of the reaction: D-glucose 6-phosphate = 1D-myo-inositol 3-phosphate. This reaction requires NAD, which dehydrogenates the CHOH group to CO at C-5 of the glucose 6-phosphate, making C-6 into an active methylene, able to condense with the aldehyde at C-1. Finally, the enzyme-bound NADH reconverts C-5 into the CHOH form.

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glial cell-neuron signaling [GO_0150098]

Cell-cell signaling that mediates the transfer of information from a glial cell to a neuron. This signaling has been shown to be mediated by various molecules, depending on which glial cells release them, and in which tissues the signalling occurs, e.g. microglial cell-derived nerve growth factor (NGF) in the retina, or microglial cell-derived superoxide ions in the cerebellum.

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glucuronyl-galactosyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase activity [GO_0001888]

Catalysis of the reaction: UDP-N-acetyl-D-glucosamine + beta-D-glucuronosyl-(1->3)-beta-D-galactosyl-(1->3)-beta-D-galactosyl-(1->4)-beta-D-xylosyl-proteoglycan = UDP + alpha-N-acetyl-D-glucosaminyl-(1->4)-beta-D-glucuronosyl-(1->3)-beta-D-galactosyl-(1->3)-beta-D-galactosyl-(1->4)-beta-D-xylosyl-proteoglycan.

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glutathione metabolic process [GO_0006749]

The chemical reactions and pathways involving glutathione, the tripeptide glutamylcysteinylglycine, which acts as a coenzyme for some enzymes and as an antioxidant in the protection of sulfhydryl groups in enzymes and other proteins; it has a specific role in the reduction of hydrogen peroxide (H2O2) and oxidized ascorbate, and it participates in the gamma-glutamyl cycle.

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glutathione oxidoreductase activity [GO_0097573]

Catalysis of the reaction: protein-S-S-glutathione + glutathione-SH = protein-SH + glutathione-S-S-glutathione. Note that this activity is different from GO:0015038 ‘glutathione disulfide oxidoreductase activity’. See PMID:18992757: “Grxs [glutaredoxins] can also reduce mixed disulfides between proteins or low molecular weight thiols and GSH in reactions that require only their N-terminal active- site cysteine. It is important to note that the reduction of glutathionylated substrates through the monothiol mechanism seems to be the major activity of Grxs; all dithiol Grxs described so far catalyze these reactions, but not all dithiol Grxs catalyze the reduction of protein disulfides by the dithiol mechanism”.

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glycolytic process [GO_0006096]

The chemical reactions and pathways resulting in the breakdown of a carbohydrate into pyruvate, with the concomitant production of a small amount of ATP and the reduction of NAD(P) to NAD(P)H. Glycolysis begins with the metabolism of a carbohydrate to generate products that can enter the pathway and ends with the production of pyruvate. Pyruvate may be converted to acetyl-coenzyme A, ethanol, lactate, or other small molecules.

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glycoprotein 3-alpha-L-fucosyltransferase activity [GO_0018392]

Catalysis of the reaction: N(4)-{N-acetyl-beta-D-glucosaminyl-(1->2)-alpha-D-mannosyl-(1->3)-[N-acetyl-beta-D-glucosaminyl-(1->2)-alpha-D-mannosyl-(1->6)]-beta-D-mannosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->4)-N-acetyl-beta-D-glucosaminyl}-L-asparagine + GDP-L-fucose = N(4)-{N-acetyl-beta-D-glucosaminyl-(1->2)-alpha-D-mannosyl-(1->3)-[N-acetyl-beta-D-glucosaminyl-(1->2)-alpha-D-mannosyl-(1->6)]-beta-D-mannosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->4)-[alpha-L-fucosyl-(1->3)]-N-acetyl-beta-D-glucosaminyl}-L-asparagine + GDP + H+.

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glycosylation-dependent protein binding [GO_0140032]

Binding to a protein upon glycosylation of the target protein. This term should only be used when the binding is shown to require glycosylation of the target protein: the interaction needs to be tested with and without the PTM. The binding does not need to be at the site of glycosylation. It may be that the glycosylation causes a conformational change that allows binding of the protein to another region; this type of glycosylation-dependent protein binding is valid for annotation to this term.

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Golgi apparatus [GO_0005794]

A membrane-bound cytoplasmic organelle of the endomembrane system that further processes the core oligosaccharides (e.g. N-glycans) added to proteins in the endoplasmic reticulum and packages them into membrane-bound vesicles. The Golgi apparatus operates at the intersection of the secretory, lysosomal, and endocytic pathways. Note that the Golgi apparatus can be located in various places in the cytoplasm. In plants and lower animal cells, the Golgi apparatus exists as many copies of discrete stacks dispersed throughout the cytoplasm, while the Golgi apparatus of interphase mammalian cells is a juxtanuclear, often pericentriolar reticulum, where the discrete Golgi stacks are stitched together to form a compact and interconnected ribbon, sometimes called the Golgi ribbon.

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guanyl-nucleotide exchange factor activity [GO_0005085]

Stimulates the exchange of GDP to GTP on a signaling GTPase, changing its conformation to its active form. Guanine nucleotide exchange factors (GEFs) act by stimulating the release of guanosine diphosphate (GDP) to allow binding of guanosine triphosphate (GTP), which is more abundant in the cell under normal cellular physiological conditions.

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hematopoietic or lymphoid organ development [GO_0048534]

The process whose specific outcome is the progression of any organ involved in hematopoiesis (also known as hemopoiesis) or lymphoid cell activation over time, from its formation to the mature structure. Such development includes differentiation of resident cell types (stromal cells) and of migratory cell types dependent on the unique microenvironment afforded by the organ for their proper differentiation.

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hepaticobiliary system development [GO_0061008]

The progression of the hepaticobiliary system over time, from its formation to the mature structure. The hepaticobiliary system is responsible for metabolic and catabolic processing of small molecules absorbed from the blood or gut, hormones and serum proteins, detoxification, storage of glycogen, triglycerides, metals and lipid soluble vitamins and excretion of bile. Included are the synthesis of albumin, blood coagulation factors, complement, and specific binding proteins.

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hepaticobiliary system process [GO_0061007]

An system process carried out by any of the organs or tissues of the hepaticobiliary system. The hepaticobiliary system is responsible for metabolic and catabolic processing of small molecules absorbed from the blood or gut, hormones and serum proteins, detoxification, storage of glycogen, triglycerides, metals and lipid soluble vitamins and excretion of bile. Included are the synthesis of albumin, blood coagulation factors, complement, and specific binding proteins.

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hindbrain development [GO_0030902]

The process whose specific outcome is the progression of the hindbrain over time, from its formation to the mature structure. The hindbrain is the posterior of the three primary divisions of the developing chordate brain, or the corresponding part of the adult brain (in vertebrates, includes the cerebellum, pons, and medulla oblongata and controls the autonomic functions and equilibrium).

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hindgut contraction [GO_0043133]

A process in which force is generated within smooth muscle tissue, resulting in a change in muscle geometry. This process occurs in the hindgut. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. The hindgut is the posterior part of the alimentary canal, including the rectum, and the large intestine.

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histone binding [GO_0042393]

Binding to a histone, any of a group of water-soluble proteins found in association with the DNA of eukaryotic or archaeal chromosomes. They are involved in the condensation and coiling of chromosomes during cell division and have also been implicated in gene regulation and DNA replication. They may be chemically modified (methylated, acetlyated and others) to regulate gene transcription.

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histone H3K27 trimethyltransferase activity [GO_0140951]

Catalysis of the reaction: L-lysyl27-[histone H3] + 3 S-adenosyl-L-methionine = 3 H+ + N6,N6,N6-trimethyl-L-lysyl27-[histone H3] + 3 S-adenosyl-L-homocysteine. This reaction is the successive addition of three methyl groups to the unmethylated lysine residue at position 27 of histone H3, producing histone H3K27me3.

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histone H3K9 trimethyltransferase activity [GO_0140949]

Catalysis of the reaction: L-lysyl9-[histone H3] + 3 S-adenosyl-L-methionine = 3 H+ + N6,N6,N6-trimethyl-L-lysyl9-[histone H3] + 3 S-adenosyl-L-homocysteine. This reaction is the successive addition of three methyl groups to the unmethylated lysine residue at position 9 of histone H3, producing histone H3K9me3.

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histone H3K9me2 methyltransferase activity [GO_0140947]

Catalysis of the reaction: N6,N6-dimethyl-L-lysyl9-[histone H3] + S-adenosyl-L-methionine = H+ + N6,N6,N6-trimethyl-L-lysyl9-[histone H3] + S-adenosyl-L-homocysteine. This reaction is the addition of a single methyl group to the dimethylated lysine residue at position 9 of histone H3, producing histone H3K9me3.

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histone H4K20 methyltransferase activity [GO_0042799]

Catalysis of the reaction: S-adenosyl-L-methionine + histone H4 L-lysine (position 20) = S-adenosyl-L-homocysteine + histone H4 N6-methyl-L-lysine (position 20). This reaction is the addition of a methyl group to the lysine residue at position 20 of the histone H4 protein. Note that in some species, the methyl group may be added to a lysine in a slightly different position of the histone H4 protein, but that this term still applies.

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histone H4K20 trimethyltransferase activity [GO_0140943]

Catalysis of the reaction: L-lysyl(20)-[histone H4] + 3 S-adenosyl-L-methionine = 3 H+ + N(6),N(6),N(6)-trimethyl-L-lysyl(20)-[histone H4] + 3 S-adenosyl-L-homocysteine. This reaction is the addition of three methyl groups to the lysine residue at position 20 of the histone H4 protein, producing histone H4K20me3.

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HMG box domain binding [GO_0071837]

Binding to an HMG box domain, a protein domain that consists of three helices in an irregular array. HMG-box domains are found in one or more copies in HMG-box proteins, which form a large, diverse family involved in the regulation of DNA-dependent processes such as transcription, replication, and strand repair, all of which require the bending and unwinding of chromatin.

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holo-[acyl-carrier-protein] synthase activity [GO_0008897]

Catalysis of the reaction: CoA + substrate-serine = adenosine 3’,5’-bisphosphate + substrate-serine-4’-phosphopantetheine. The transfer of the 4’-phosphopantetheine (Ppant) co-factor from coenzyme A to the hydroxyl side chain of the serine residue of acyl- or peptidyl-carrier protein (ACP or PCP) to convert them from the apo to the holo form.

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hormone activity [GO_0005179]

The action characteristic of a hormone, any substance formed in very small amounts in one specialized organ or group of cells and carried (sometimes in the bloodstream) to another organ or group of cells in the same organism, upon which it has a specific regulatory action. The term was originally applied to agents with a stimulatory physiological action in vertebrate animals (as opposed to a chalone, which has a depressant action). Usage is now extended to regulatory compounds in lower animals and plants, and to synthetic substances having comparable effects; all bind receptors and trigger some biological process. Also consider annotating to ‘receptor agonist activity ; GO:0048018’.

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