Gene ontology ID
GO:0000384
Definition
Catalysis of the first transesterification reaction of spliceosomal mRNA splicing. The intron branch site adenosine is the nucleophile attacking the 5' splice site, resulting in cleavage at this position. In cis splicing, this is the step that forms a lariat structure of the intron RNA, while it is still joined to the 3' exon
Synonyms
1. lariat formation, 5'-splice site cleavage
References
Legend
is an element of the parent element
is a part of the parent element
is related to the parent element
derives from the parent element
/
/
at least 1 tissue/ enzyme/ localization link in this branch
/
/
tissue/ enzyme/ localization link to BRENDA