TRN_VP3 FBbt_00007576
TRN_VP3
ID: FBbt_00007576
Adult unilateral thermosensory neuron with its sensory dendrite in an aristal sensillum and an axonal projection to antennal lobe glomerulus VP3 (Stocker et al., 1990; Alpert et al., 2020; Benton et al., 2025). It has large, elaborate sensory endings (Budelli et al., 2019). It is transiently activated by temperature decreases and transiently inhibited by temperature increases (Budelli et al., 2019). It expresses the cooling-specific Ir21a and the co-receptors Ir25a and Ir93a, with all three being required for sensitivity to cooling (Budelli et al., 2019). There are around 3-4 of these cells per hemisphere (Marin et al., 2020). (Gallio et al., 2011, Marin et al., 2020, Alpert et al., 2020, Budelli et al., 2019, Benton et al., 2025, Stocker et al., 1990)
Open in VFB 3D Browser →Classification
Relationships
- expresses: Ir21a
- sends synaptic output throughout: antennal lobe glomerulus VP3
Alternative Names
| Synonym | Scope | Reference |
|---|---|---|
| TRN_VP3b | related synonym | Scheffer et al., 2020 |
| TRN_VP3a | related synonym | Berg et al., 2025 |
| TRN_VP3a | related synonym | Bates et al., 2025 |
| cooling cell | exact synonym | Budelli et al., 2019 |
| VP3RNa | exact synonym | Marin et al., 2020 |
| TRN_VP3 | exact synonym | Marin et al., 2020 |
| aristal neuron (VP3) | exact synonym | 10368 |
| cold cell | exact synonym | Budelli et al., 2019 |
| cool cell | exact synonym | Liu et al., 2015 |
| cool aristal neuron | exact synonym | |
| cold aristal neuron | exact synonym | Gallio et al., 2011 |
| ArA | exact synonym | Benton et al., 2025 |
| cool thermoreceptor cells in the arista | exact synonym | Liu et al., 2015 |
| TRN_VP3a | related synonym | Scheffer et al., 2020 |
| TRN_VP3a | related synonym | Schlegel et al., 2024 |
| TRN_VP3a | related synonym |
Cross References
- TRN_VP3 on FlyBrain NeuronDB (10368)
Downloads
Image files aligned to TRN_VP3a_L (MaleCNS:35634):
Image files aligned to TRN_VP3a_R (MaleCNS:121384):
Image files aligned to TRN_VP3a_R (MaleCNS:133348431):
Image files aligned to TRN_VP3:
Image files aligned to TRN_VP3:
Image files aligned to BANC_626:720575941609985257:
Image files aligned to BANC_626:720575941687523311:
Image files aligned to VP3RNal#4 (FAFB:9573214):
Image files aligned to VP3RNal#1 (FAFB:9573191):
Image files aligned to VP3RNar#2 (FAFB:7385775):
List all available images of TRN_VP3 (35 total)
| Thumbnail | Name | Tags |
|---|---|---|
 | TRN_VP3a_L (MaleCNS:35634) | Nervous_system, Sensory_neuron, Thermosensory_system, Adult, Cholinergic |
 | TRN_VP3a_L (MaleCNS:37147) | Nervous_system, Sensory_neuron, Thermosensory_system, Adult, Cholinergic |
 | TRN_VP3a_L (MaleCNS:436612) | Nervous_system, Sensory_neuron, Thermosensory_system, Adult, Cholinergic |
 | TRN_VP3a_R (MaleCNS:121384) | Nervous_system, Sensory_neuron, Thermosensory_system, Adult, Cholinergic |
 | TRN_VP3a_R (MaleCNS:17406) | Nervous_system, Sensory_neuron, Thermosensory_system, Adult, Cholinergic |
Transgene expression in TRN_VP3 (2 total)
| Thumbnail | Name | Tags |
|---|---|---|
 | P{GMR79C04-GAL4} expression pattern | Expression_pattern |
 | P{GMR77C10-GAL4} expression pattern | Expression_pattern |
Downstream connectivity classes for TRN_VP3 (162 total)
| Thumbnail | Name | Tags |
|---|---|---|
Upstream connectivity classes for TRN_VP3 (134 total)
| Thumbnail | Name | Tags |
|---|---|---|