FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

U12-type spliceosomal complex

ID (Ontology)

GO:0005689 (Gene Ontology)

Definition

Any spliceosomal complex that forms during the splicing of a messenger RNA primary transcript to excise an intron; the series of U12-type spliceosomal complexes is involved in the splicing of the majority of introns that contain atypical AT-AC terminal dinucleotides, as well as other non-canonical introns. The entire splice site signal, not just the terminal dinucleotides, is involved in determining which spliceosome utilizes the site.[ PubMed:11574683 PubMed:11971955 ]

Also Known As

"minor (U12-type) spliceosomal complex" ; "minor spliceosomal complex"

Comment

Links to External Ontologies

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Results list data from multiple species. Choose a record type above to open its HitList.

Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Genes (FBgn)	GO_BIOLOGICAL_PROCESS
Genes (FBgn)	GO_CELLULAR_COMPONENT

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	Genes
U12-type spliceosomal complex (all annotations which use CV term, excluding "NOT" statements)
part_of \| U12-type spliceosomal complex

Spanning Tree (Parents/Children)

nuclear protein-containing complex__
ribonucleoprotein complex___________|
                                    spliceosomal complex
                                     |__U12-type spliceosomal complex  14 rec.
                                         |__U12-type catalytic step 1 spliceosome
                                         |__U12-type catalytic step 2 spliceosome
                                         |__U12-type post-mRNA release spliceosomal complex
                                         |__U12-type post-spliceosomal complex
                                         |__U12-type precatalytic spliceosome
                                         |__U12-type prespliceosome

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	spliceosomal complex
Part of
Synonyms & Secondary IDs
Synonyms
	"AT-AC spliceosomal complex" NARROW "minor (U12-type) spliceosomal complex" EXACT "minor spliceosomal complex" EXACT
Secondary IDs

External Crossreferences & Linkouts
	Wikipedia:Minor_spliceosome