FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term RP2sib neuron ID (Ontology) FBbt:00001454 (Fly Anatomy)
Definition Neuron developing from GMC4-2a, the first born ganglion mother cell differentiating from neuroblast NB4-2 (Bhat et al., 1995). Its ultimate fate is unknown, but can be distinguished from its sibling motor neuron, RP2 (FBbt:00001453), by lower expression of markers such as the membrane protein recognized by monoclonal antibody 22C10, eve (FBgn0000606), or ftz (FBgn0001077).[ FlyBase:FBrf0055900 FlyBase:FBrf0081448 ]
Also Known As "4-2a2" ; "RP2/sib"
Comment
Links to External Ontologies
VFB:FBbt_00001454
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN      66
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       8
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      15
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 RP2sib neuron (all annotations which use CV term, excluding "NOT" statements)      66      3      8     15
     RP2sib neuron | ectopic       6       --       --       3
     RP2sib neuron | ectopic | germline clone       2       --       --       --
     RP2sib neuron | ectopic | heat sensitive       1       --       --       1
     RP2sib neuron | embryonic stage       2       --       --       --
     RP2sib neuron | embryonic stage 11       2       --       --       --
     RP2sib neuron | embryonic stage 11 | increased number       2       --       --       --
     RP2sib neuron | embryonic stage 12       2       --       --       --
     RP2sib neuron | embryonic stage 12 | increased number       2       --       --       --
     RP2sib neuron | germline clone       3       --       --       --
     RP2sib neuron | heat sensitive       4       --       --       3
     RP2sib neuron | increased number       3       --       --       3
     RP2sib neuron | somatic clone       6       --       2      1
Spanning Tree (Parents/Children)
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larval neuron
 |__RP neuron_____________
 |__larval CNS neuron_____|
ectodermal derivative     |
 |__NB4-2 lineage neuron__|
CNS neuron                |
 |__NB4-2 lineage neuron__|
 |__larval CNS neuron_____|
                          RP2sib neuron  92 rec.
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Is a RP neuron
NB4-2 lineage neuron
larval CNS neuron
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Synonyms
Secondary IDs
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VFB:FBbt_00001454