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"

Comment

Links to External Ontologies

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	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)

axon terminus__
presynapse_____|
               terminal bouton
                |__type I terminal bouton  107 rec.
                    |__subsynaptic reticulum 37 rec.
                    |__type Ib terminal bouton 41 rec.
                    |__type Is terminal bouton 35 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	terminal bouton
Part of
Synonyms & Secondary IDs
Synonyms
	"type I terminal button" EXACT
Secondary IDs

External Crossreferences & Linkouts