FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term U2-type spliceosomal complex ID (Ontology) GO:0005684 (Gene Ontology)
Definition Any spliceosomal complex that forms during the splicing of a messenger RNA primary transcript to excise an intron that has canonical consensus sequences near the 5' and 3' ends.[ PubMed:11343900 ]
Also Known As "major (U2-type) spliceosomal complex" ; "major spliceosomal complex"
Comment
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Annotations
Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Genes (FBgn)  GO_CELLULAR_COMPONENT       8
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 Full annotation statements 
Relevant FlyBase reports
 Genes
 U2-type spliceosomal complex (all annotations which use CV term, excluding "NOT" statements)       8
     part_of | U2-type spliceosomal complex       8
Spanning Tree (Parents/Children)
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nuclear protein-containing complex__
ribonucleoprotein complex___________|
                                    spliceosomal complex
                                     |__U2-type spliceosomal complex  38 rec.
                                         |__commitment complex 5 rec.
                                         |__U2-type catalytic step 1 spliceosome 3 rec.
                                         |__U2-type catalytic step 2 spliceosome 6 rec.
                                         |__U2-type post-mRNA release spliceosomal complex 2 rec.
                                         |__U2-type post-spliceosomal complex 2 rec.
                                         |__U2-type precatalytic spliceosome 1 rec.
                                         |__U2-type prespliceosome 15 rec.
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Is a spliceosomal complex
Part of
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Synonyms
  • "GT-AG spliceosome" NARROW
    "major (U2-type) spliceosomal complex" EXACT
    "major spliceosomal complex" EXACT
Secondary IDs
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