FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
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"
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Annotations
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Data Class Field Records
Genes (FBgn)  GO_BIOLOGICAL_PROCESS       3
Genes (FBgn)  GO_CELLULAR_COMPONENT      14
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 Genes
 U12-type spliceosomal complex (all annotations which use CV term, excluding "NOT" statements)      14
     part_of | U12-type spliceosomal complex      14
Spanning Tree (Parents/Children)
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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
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Is a spliceosomal complex
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Synonyms
  • "AT-AC spliceosomal complex" NARROW
    "minor (U12-type) spliceosomal complex" EXACT
    "minor spliceosomal complex" EXACT
Secondary IDs
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Wikipedia:Minor_spliceosome