Splicing factor 45
Definition:
Splice factor that binds to the single-stranded 3'AG at the exon/intron border and promotes its utilization in the second catalytic step. Involved in the regulation of alternative splicing and the utilization of cryptic splice sites. Promotes the utilization of a cryptic splice site created by the beta-110 mutation in the HBB gene. The resulting frameshift leads to sickle cell anemia.
References:
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[1]. Lorenzo Corsini, et al. U2AF-homology motif interactions are required for alternative splicing regulation by SPF45. Nat Struct Mol Biol. 2007 Jul;14(7):620-9. [Content Brief]
[2]. María José Lallena, et al. Splicing regulation at the second catalytic step by Sex-lethal involves 3' splice site recognition by SPF45. Cell. 2002 May 3;109(3):285-96. [Content Brief]
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