FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term type I terminal bouton ID (Ontology) GO:0061174 (Gene Ontology)
Definition Terminal inflated portion of the axon of a glutamatergic neuron, containing the specialized apparatus necessary to release neurotransmitters that will induce the contraction of muscle. The axon terminus is considered to be the whole region of thickening and the terminal bouton is a specialized region of it.
Also Known As "type I terminal button"
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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
Genes (FBgn)  GO_CELLULAR_COMPONENT      12
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       3
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 type I terminal bouton (all annotations which use CV term, excluding "NOT" statements)       --      25      3      3
     located_in | type I terminal bouton       --      12       --       --
     type I terminal bouton | increased number | third instar larval stage       5       --       --       5
     type I terminal bouton | third instar larval stage       7       --       --       1
Spanning Tree (Parents/Children)
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  presynapse
   |__terminal bouton
       |__type I terminal bouton  107 rec.
           |__type Ib terminal bouton 41 rec.
           |__type Is terminal bouton 35 rec.
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Is a terminal bouton
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Synonyms
  • "type I terminal button" EXACT
Secondary IDs
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