HRN_VP1l FBbt_00111336
HRN_VP1l
ID: FBbt_00111336
Thermosensory receptor neuron that expresses the Ionotropic receptor (Ir) 21a and innervates antennal lobe glomerulus VP1l (Marin et al., 2020; Alpert et al., 2020. It has its sensory dendrite in chamber I of the sacculus and it responds to temperature drops below 25 degrees celsius (Marin et al., 2020; Alpert et al., 2020. It develops from an Naa precursor (Benton et al., 2025. There are around 6-8 of these cells per hemisphere (Marin et al., 2020 and they are unilateral (Schlegel et al., 2021. (Alpert et al., 2020, Benton et al., 2025, Silbering et al., 2011, Marin et al., 2020, Schlegel et al., 2021)
Ir21a neuron of sacculus in original reference was speculatively assigned to sacculus chamber III and VP3 (Silbering et al., 2011. Later found to be chamber I and VP1l (Marin et al., 2020 and refs therein). Assigned to 'cold glomerulus' in Alpert et al., 2020 - FBrf0246007, but projections in AL look like VP1l projections shown in Marin et al., 2020.
Open in VFB 3D Browser →Classification
- adult thermosensory neuron
- external sense organ sensory neuron
- hygrosensory system neuron
- unilateral antennal lobe receptor neuron
Relationships
- develops from: antennal olfactory receptor neuron precursor Naa
- expresses: Ir21a
- has sensory dendrite in: sensillum of sacculus chamber I
- has soma location: sacculus
- is part of: adult peripheral nervous system
- sends synaptic output throughout: antennal lobe glomerulus VP1l
Alternative Names
| Synonym | Scope | Reference |
|---|---|---|
| HRN_VP1l | related synonym | Bates et al., 2025, Berg et al., 2025, name_in_banc, Schlegel et al., 2024, Scheffer et al., 2020 |
| adult olfactory receptor neuron Ir21a | related synonym | |
| VP1lRN | exact synonym | Marin et al., 2020 |
| OSN Ir21a | exact synonym | Silbering et al., 2011 |
| HRN_VP1l | exact synonym | Marin et al., 2020 |
| sacculus cold cell | exact synonym | Alpert et al., 2020 |
| Ir21a | exact synonym | Silbering et al., 2011 |
| ORN Ir21a | exact synonym | |
| ionotropic receptor neuron Ir21a | exact synonym |
Downloads
Image files aligned to HRN_VP1l_R (MaleCNS:383044585):
Image files aligned to HRN_VP1l_R:
Image files aligned to HRN_VP1l:
Image files aligned to HRN_VP1l:
Image files aligned to HRN_VP1l:
Image files aligned to HRN_VP1l:
Image files aligned to BANC_626:720575941611940838:
Image files aligned to BANC_626:720575941657804312:
Image files aligned to HRN_VP1l_R:
Image files aligned to HRN_VP1l_R (MaleCNS:383044585):