| Function | Component of the 17S U2 SnRNP complex of the spliceosome, a large ribonucleoprotein complex that removes introns from transcribed pre-mRNAs. The 17S U2 SnRNP complex (1) directly participates in early spliceosome assembly and (2) mediates recognition of the intron branch site during pre-mRNA splicing by promoting the selection of the pre-mRNA branch-site adenosine, the nucleophile for the first step of splicing. Within the 17S U2 SnRNP complex, SF3B4 is part of the SF3B subcomplex, which is required for 'A' complex assembly formed by the stable binding of U2 snRNP to the branchpoint sequence in pre-mRNA. Sequence independent binding of SF3A and SF3B subcomplexes upstream of the branch site is essential, it may anchor U2 snRNP to the pre-mRNA. Also acts as a component of the minor spliceosome, which is involved in the splicing of U12-type introns in pre-mRNAs. |
| Protein Name | Splicing Factor 3b Subunit 5Sf3b5Pre-Mrna-Splicing Factor Sf3b 10 Kda Subunit |
| Database Links | Reactome: R-HSA-72163Reactome: R-HSA-72165 |
| Cellular Localisation | Nucleus |
| Alternative Antibody Names | Anti-Splicing Factor 3b Subunit 5 antibodyAnti-Sf3b5 antibodyAnti-Pre-Mrna-Splicing Factor Sf3b 10 Kda Subunit antibodyAnti-SF3B5 antibodyAnti-SF3B10 antibody |
Information sourced from Uniprot.org
