PRP11, SAP62, PRPF11, SF3a66, Splicing factor 3A subunit 2, Spliceosome-associated protein 62, SAP 62, SF3A2
Subunit of the splicing factor SF3A required for A complex assembly formed by the stable binding of U2 snRNP to the branchpoint sequence (BPS) in pre-mRNA. Sequence independent binding of SF3A/SF3B complex upstream of the branch site is essential, it may anchor U2 snRNP to the pre-mRNA. May also be involved in the assembly of the E complex.