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Term Information

Accession
GO:0000384
Name
first spliceosomal transesterification activity
Ontology
molecular_function
Synonyms
lariat formation, 5'-splice site cleavage
Alternate IDs
None
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. Source: GOC:krc, PMID:19239890, ISBN:0879695897
Comment
None
History
See term history for GO:0000384 at QuickGO
Subset
None
Feedback
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Parents of first spliceosomal transesterification activity (GO:0000384)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
first spliceosomal transesterification activity [is_a relation] is_a  catalytic activity, acting on RNA (GO:0140098)
first spliceosomal transesterification activity [BFO:0000050 relation] BFO:0000050  RNA splicing, via transesterification reactions (GO:0000375)

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None.