FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
General Information
Term catalytic step 2 spliceosome ID (Ontology) GO:0071013 (Gene Ontology)
Definition A spliceosomal complex that contains three snRNPs, including U5, bound to a splicing intermediate in which the first catalytic cleavage of the 5' splice site has occurred. The precise subunit composition differs significantly from that of the catalytic step 1, or activated, spliceosome, and includes many proteins in addition to those found in the associated snRNPs.[ ISBN:0879695897 ISBN:0879697393 PubMed:18322460 PubMed:19239890 ]
Comment
Links to External Ontologies
  QuickGO data     AmiGO data
Annotations
Records annotated with this term OR any of its CHILD TERMS
    Results list data from multiple species. Click on a button above and use the 'Filter by species' options on the resulting HitList to retrieve species-specific data.
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Genes (FBgn)  GO_BIOLOGICAL_PROCESS      11
Genes (FBgn)  GO_CELLULAR_COMPONENT     125
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Genes
 catalytic step 2 spliceosome (all annotations which use CV term, excluding "NOT" statements)     125
     part_of | catalytic step 2 spliceosome     125
Spanning Tree (Parents/Children)
Only view relationship: 
protein-containing complex
 |__catalytic complex_______________
nuclear protein-containing complex  |
 |__spliceosomal complex____________|
ribonucleoprotein complex           |
 |__spliceosomal complex____________|
                                    catalytic step 2 spliceosome  126 rec.
                                     |__U2-type catalytic step 2 spliceosome 6 rec.
                                     |__U12-type catalytic step 2 spliceosome
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a spliceosomal complex
catalytic complex
Part of
hide Synonyms & Secondary IDs
Synonyms
  • "mammalian spliceosomal complex C" NARROW[ ISBN:0879695897 ISBN:0879697393 PubMed:19239890 ]
    "mammalian spliceosomal complex C1" NARROW[ ISBN:0879695897 ISBN:0879697393 ]
    "yeast spliceosomal complex A2-2" NARROW[ ISBN:0879695897 ISBN:0879697393 ]
Secondary IDs
hide External Crossreferences & Linkouts