FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval Jaam2 neuron ID (Ontology) FBbt:00111657 (Fly Anatomy)
Definition Interneuron of the larval ventral nerve cord (Heckscher et al., 2015) that is relatively late-born in the NB5-2 Notch OFF primary hemilineage (Mark et al., 2021). The primary neurite extends into the neuropil forming one arbor that bifurcates and extends anteriorly and posteriorly (Heckscher et al., 2015). One neurite crosses the midline and forms an arbor that extends anteriorly in a circular manner (Heckscher et al., 2015). It receives strong input from proprioceptive multidendritic neurons and outputs onto Jaam1 (Heckscher et al., 2015). There is one of these neurons per hemineuromere (Heckscher et al., 2015).[ FlyBase:FBrf0229965 FlyBase:FBrf0249021 ]
Also Known As "A06h2"
Comment These neurons were identified in two EM reconstructions: one of the full CNS of a 6h old first instar larva, and another of abdominal segment 3 of a 12-24h old first instar larva. Only bilateral connections are reported. The number of identified input synapses in A1 was the following (number in brackets left/right): from ddaD/ddAE/dda1 (34/25), from vbp/vdap (21/32). The number of identified output synapses was the following (number in brackets left/right): to Jaam1 (13/23). It is still not known if the pattern of connections is the same in the other abdominal segments (Heckscher et al., 2015). HMD2 and A12g synonyms from catmaid.
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VFB:FBbt_00111657
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neuron
 |__sensory system neuron_______________________
interneuron                                     |
 |__larval interneuron__________________________|
Notch OFF hemilineage primary neuron            |
 |__NB5-2 Notch OFF hemilineage primary neuron__|
NB5-2 lineage primary neuron                    |
 |__lineage NB5-2 primary interneuron___________|
 |__NB5-2 Notch OFF hemilineage primary neuron__|
primary interneuron                             |
 |__lineage NB5-2 primary interneuron___________|
larval CNS neuron                               |
 |__larval interneuron__________________________|
                                                larval Jaam2 neuron
                                                 |__larval abdominal 1 Jaam2 neuron
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Is a lineage NB5-2 primary interneuron
sensory system neuron
NB5-2 Notch OFF hemilineage primary neuron
larval interneuron
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VFB:FBbt_00111657