FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval mushroom body output neuron m1 ID (Ontology) FBbt:00047988 (Fly Anatomy)
Definition Larval neuron with postsynaptic terminals in multiple ipsilateral mushroom body regions, including the lower two regions of the vertical lobe (V1 and V2) and the lateral appendix (Saumweber et al., 2018). It also has postsynapses in the dorsoanterior compartment (anterior superior medial protocerebrum) (Saumweber et al., 2018). Its presynaptic sites are found in the basocentral compartment (ventromedial cerebrum) and basoposterior medial compartment (lateral accessory lobe) (Saumweber et al., 2018). As well as receiving input from Kenyon cells, it is also synapsed by MBON-e1, MBON-h1, MBON-h2 and MBON-i1 and lateral horn neurons downstream of Or42b projection neurons (Eschbach et al., 2021). It outputs onto FAN-19, FAN-21 and FAN-22 (Eschbach et al., 2020). It is GABAergic (Eichler et al., 2017). Its activity inhibits, and its inhibition promotes, turning behavior as part of larval chemotaxis (Eschbach et al., 2021). It develops from a DALcm neuroblast (Saumweber et al., 2018).[ FlyBase:FBrf0236359 FlyBase:FBrf0238440 FlyBase:FBrf0245294 FlyBase:FBrf0251872 ]
Also Known As "CN-62" ; "larval MBE20" ; "larval MBON-m1" (for all, see Synonyms field below)
Comment MBE20 and CN-62 synonyms from catmaid. Lineage given as DALcm1/2 in Saumweber et al. (2018).
Links to External Ontologies
VFB:FBbt_00047988
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 larval mushroom body output neuron m1 (all annotations which use CV term, excluding "NOT" statements)       1     10
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larval neuron
 |__larval mushroom body-lateral horn convergence neuron__
 |__larval GABAergic neuron_______________________________|
interneuron                                               |
 |__primary interneuron___________________________________|
GABAergic neuron                                          |
 |__larval GABAergic neuron_______________________________|
ectodermal derivative                                     |
 |__anterior ectoderm derivative__________________________|
primary neuron                                            |
 |__primary interneuron___________________________________|
mushroom body output neuron                               |
 |__larval mushroom body output neuron____________________|
larval interneuron                                        |
 |__larval mushroom body output neuron____________________|
CNS neuron                                                |
 |__supraesophageal ganglion neuron_______________________|
                                                          larval mushroom body output neuron m1  11 rec.
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Is a supraesophageal ganglion neuron
anterior ectoderm derivative
larval mushroom body output neuron
larval mushroom body-lateral horn convergence neuron
primary interneuron
larval GABAergic neuron
Develops from neuroblast DAL
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VFB:FBbt_00047988