Summary

Name SF3B1
Full Name Splicing factor 3B subunit 1
Synonyms Pre-mRNA-splicing factor SF3b 155 kDa subunit, SF3b155, Spliceosome-associated protein 155, SAP 155 | SAP155
Primary ID O75533
Links - -
Type protein
Relations 12
Function Involved in pre-mRNA splicing as a component of the splicing factor SF3B complex (PubMed:27720643). SF3B complex is 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 (PubMed:12234937). Together with other U2 snRNP complex components may also play a role in the selective processing of microRNAs (miRNAs) from the long primary miRNA transcript, pri-miR-17-92 (By similarity). May also be involved in the assembly of the 'E' complex (PubMed:10882114). Belongs also to the minor U12-dependent spliceosome, which is involved in the splicing of rare class of nuclear pre-mRNA intron (PubMed:15146077).

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Modifications Tables

Relations

Regulator Mechanism target score
+ up-regulates img/direct-activation.png phosphorylation SF3B1 0.354
Publications: 2 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation SF3B1 0.354
Publications: 2 Organism: Homo Sapiens
+ img/unknown.png phosphorylation SF3B1 0.354
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png phosphorylation SF3B1 0.354
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png phosphorylation SF3B1 0.515
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/indirect-activation.png Proliferation 0.7
Publications: 1 Organism: Homo Sapiens
+ form complex img/form-complex.png binding SF3b 0.937
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/indirect-activation.png Differentiation 0.7
Publications: 1 Organism: Homo Sapiens
+ form complex img/form-complex.png binding B-WICH complex 0.414
Publications: 1 Organism: Homo Sapiens
+ form complex img/form-complex.png binding U2 snRNP complex 0.823
Publications: 1 Organism: Homo Sapiens