Pm1 [FBbt_00003833]
Pm1
ID: FBbt_00003833
Proximal medullary wide-field amacrine neuron that branches as it enters the proximal side of the medulla and forms broad terminal arbors, with mixed pre- and post-synaptic terminals, mainly in medulla layer M9 (Fischbach and Dittrich, 1989; Morante and Desplan, 2008).
Neurotransmitter determined to be acetylcholine based on Cha-GAL4.7.4 driver (FBtp0014830) expression and anti-ChaT staining (Varija Raghu et al., 2011 - FBrf0212356), but scRNAseq data assigns as GABA based on Gad1 transcripts and lineage (Konstantinides et al., 2022 - FBrf0253187). EM also predicts GABA (Nern et al., 2025 - FBrf0262545). Nern et al. (2025) split this into 3 subtypes (Pm1, Pm5, Pm6), which seem to have small differences in layer and column spans.
Open in VFB 3D Browser →- Notch OFF hemilineage secondary neuron
- adult optic lobe neuron
- optic lobe wide-field columnar neuron
- proximal medullary amacrine neuron
Relationships
- develops from: immature proximal medullary amacrine neuron Pm1
- has soma location: cell body rind of adult medulla
- receives synaptic input in region: medulla layer M9
- sends synaptic output to region: medulla layer M9
Alternative Names
| Synonym | Scope | Reference |
|---|---|---|
| Pm06 | narrow synonym | Nern et al., 2025 |
| Pm01 | narrow synonym | Nern et al., 2025 |
| Pm6 | narrow synonym | Nern et al., 2025 |
| Pm5 | narrow synonym | Nern et al., 2025 |
| Pm1 | exact synonym | |
| Pm1 | exact synonym | Özel et al., 2021 |
| Pm1 | exact synonym | Schlegel et al., 2024 |
| Pm02 | narrow synonym | Nern et al., 2025 |
| Pm02 | narrow synonym | Matsliah et al., 2024 |
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