nuclear mRNA splicing, via spliceosome, splicing AT-AC intron, splicing GT-AG intron, nuclear mRNA splicing via U12-type spliceosome, nuclear mRNA splicing via U2-type spliceosome, mRNA splicing, pre-mRNA splicing
Alternate IDs
GO:0006374, GO:0006375
Definition
The joining together of exons from one or more primary transcripts of messenger RNA (mRNA) and the excision of intron sequences, via a spliceosomal mechanism, so that mRNA consisting only of the joined exons is produced.
Source:
GOC:krc,
ISBN:0198506732,
ISBN:0879695897
Comment
Note that although the many U12-type introns have the sequence AT-AC at the intron termini, some introns with these terminal sequences are spliced by the U2-type spliceosome. The distinguishing characteristics are sequences near the 5' splice site and the branch point sequences of the intron. Note that although the majority of U2-type introns have the sequence GU-AG at the intron termini, some introns with these terminal sequences are spliced by the U12-type spliceosome. The distinguishing characteristics are sequences near the 5' splice site and the branch point sequences of the intron.