Recombinant Human Splicing factor 3B subunit 4 (SF3B4)

Uniprot Id

Q15427

Target Species

Human

Target Name

SF3B4

Target Full Name

Splicing factor 3B subunit 4

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. 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. SF3B4 has been found in complex 'B' and 'C' as well. Belongs also to the minor U12-dependent spliceosome, which is involved in the splicing of rare class of nuclear pre-mRNA intron.

Target Involvement

Acrofacial dysostosis 1, Nager type (AFD1)

Target Subcellular Location

Nucleus.

Target Protein Families

SF3B4 family

Target Synonyms

AFD1; Hsh49; MGC10828; Pre mRNA splicing factor SF3b 49 kDa subunit; Pre-mRNA-splicing factor SF3b 49 kDa subunit; SAP 49; SAP49; Sf3b4; SF3B4_HUMAN; SF3b49; SF3b50; Spliceosomal protein; Spliceosome associated protein (U2 snRNP); Spliceosome associated protein 49; Spliceosome-associated protein 49; Splicing factor 3b subunit 4 49kDa; Splicing factor 3B subunit 4

Target Background

This gene encodes one of four subunits of the splicing factor 3B. The protein encoded by this gene cross-links to a region in the pre-mRNA immediately upstream of the branchpoint sequence in pre-mRNA in the prespliceosomal complex A. It also may be involved in the assembly of the B, C and E spliceosomal complexes. In addition to RNA-binding activity, this protein interacts directly and highly specifically with subunit 2 of the splicing factor 3B. This protein contains two N-terminal RNA-recognition motifs (RRMs), consistent with the observation that it binds directly to pre-mRNA.