Tbio SF3B4 Splicing factor 3B subunit 4

Protein Summary

Description

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). May also be involved in the assembly of the 'E' complex. SF3B4 has been found in complex 'B' and 'C' as well (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). 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. [provided by RefSeq, Jul 2008]

Uniprot Accession IDs

• Q15427
• Q5SZ63

Gene Name

• SF3B4

Ensembl ID

• ENST00000271628
• ENSP00000271628
• ENSG00000143368

Symbol

• SAP49
• AFD1
• Hsh49
• SAP49
• SF3b49

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
histone modification site profile	0.69
hub protein	0.67
transcription factor binding site profile	0.66
gene perturbation	0.65
protein complex	0.65

Protein Classes

No PANTHER Classes or DTO Classes found

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 72.08   (req: < 5)

Gene RIFs: 25   (req: <= 3)

Antibodies: 288   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 72.08   (req: >= 5)

Gene RIFs: 25   (req: > 3)

Antibodies: 288   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 6

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0