Tbio SF3B1 Splicing factor 3B subunit 1

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 (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 subunit 1 of the splicing factor 3b protein complex. Splicing factor 3b, together with splicing factor 3a and a 12S RNA unit, forms the U2 small nuclear ribonucleoproteins complex (U2 snRNP). The splicing factor 3b/3a complex binds pre-mRNA upstream of the intron's branch site in a sequence independent manner and may anchor the U2 snRNP to the pre-mRNA. Splicing factor 3b is also a component of the minor U12-type spliceosome. The carboxy-terminal two-thirds of subunit 1 have 22 non-identical, tandem HEAT repeats that form rod-like, helical structures. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

Uniprot Accession IDs

• O75533
• E9PCH3

Gene Name

• SF3B1

Ensembl ID

• ENST00000335508
• ENSP00000335321
• ENSG00000115524
• ENST00000409915
• ENSP00000428820
• ENST00000414963
• ENSP00000402997

Symbol

• SAP155
• MDS
• PRP10
• Hsh155
• PRPF10
• SAP155
• SF3b155

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
hub protein	1
kinase perturbation	0.99
transcription factor perturbation	0.88
drug perturbation	0.87
protein complex	0.87

Protein Classes

PANTHER Classes

Protein / Nucleic Acid Binding / Rna Binding Protein / Mrna Processing Factor / Mrna Splicing Factor / Splicing Factor 3b Subunit 1

DTO Classes

Protein / Nucleic Acid Binding / Rna Binding Protein / Mrna Processing Factor / Mrna Splicing Factor / Splicing Factor 3b Subunit 1

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: 102.93   (req: < 5)

Gene RIFs: 120   (req: <= 3)

Antibodies: 233   (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: 102.93   (req: >= 5)

Gene RIFs: 120   (req: > 3)

Antibodies: 233   (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