FB2026_03 , released September 17, 2026
Complex: SPLICEOSOME COMPLEX A
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General Information
Name
SPLICEOSOME COMPLEX A
Species
D. melanogaster
Symbol
SPL-C-A
FlyBase ID
FBgg0000535
Date last reviewed
2016-09-05
Number of members
50
Description
Description
Nuclear pre-mRNA splicing is catalyzed by the spliceosome which assembles in a step-wise manner. Complex A, the pre-spliceosome, is composed of U1 and U2 snRNPs and proteins involved in recognition of the 5' splice site and branch point. (Adapted from PMID:24452469 and PMID:23118483).
Notes on Group
Source Material
The SPLICEOSOME COMPLEX A Gene Group has been compiled using the following publication(s): Lu and Matera, 2014, Cvitkovic and Jurica, 2013, and Saluz et al., 1988 .
Key Gene Ontology (GO) terms
Molecular Function
Biological Process
mRNA splicing, via spliceosome
Cellular Component
U2-type prespliceosome
Related Gene Groups
Parent group(s)
SPLICEOSOME COMPLEX INTERMEDIATES
Members (50)
For all members:
GO ribbon stack
 molecular functionbiological processcellular component
External Data
Synonyms and Secondary IDs
Synonym(s)
SPL-C-A
SPLICEOSOME COMPLEX A
Intron definition complex
Pre-spliceosome
Complex A
Secondary FlyBase ID(s)
References (4)