Recombinant Human Pre-mRNA branch site protein p14 (SF3B14)

Uniprot Id

Q9Y3B4

Target Species

Human

Target Name

SF3B6

Target Full Name

Splicing factor 3B subunit 6

Target Function

Involved in pre-mRNA splicing as a component of the splicing factor SF3B complex. SF3B complex is required for 'A' complex assembly formed by the stable binding of U2 snRNP to the branchpoint sequence (BPS) in pre-mRNA. Directly contacts the pre-mRNA branch site adenosine for the first catalytic step of splicing. Enters the spliceosome and associates with the pre-mRNA branch site as part of the 17S U2 or, in the case of the minor spliceosome, as part of the 18S U11/U12 snRNP complex, and thus may facilitate the interaction of these snRNP with the branch sites of U2 and U12 respectively.

Target Subcellular Location

Nucleus.

Target Protein Families

SF3B6 family

Target Synonyms

Ht006; P14; PM14_HUMAN; Pre mRNA branch site protein p14; Pre-mRNA branch site protein p14; SAP14; SF3B 14 kDa subunit; SF3B14; SF3B14a; Splicing factor 3B, 14 kDa subunit

Target Background

This gene encodes a 14 kDa protein subunit of the splicing factor 3b complex. Splicing factor 3b associates with both the U2 and U11/U12 small nuclear ribonucleoprotein complexes (U2 snRNP) of spliceosomes. This 14 kDa protein interacts directly with subunit 1 of the splicing factor 3b complex. This 14 kDa protein also interacts directly with the adenosine that carries out the first transesterification step of splicing at the pre-mRNA branch site.