UniProt functional annotation for Q9BWJ5



	UniProt functional annotation for Q9BWJ5

UniProt code: Q9BWJ5.

Organism: Homo sapiens (Human).

Taxonomy: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.

Function: Involved in pre-mRNA splicing as a component of the splicing factor SF3B complex, a constituent of the spliceosome (PubMed:27720643, PubMed:28781166). 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). {ECO:0000269|PubMed:12234937, ECO:0000269|PubMed:27720643, ECO:0000269|PubMed:28781166}.

Subunit: Component of the spliceosome B complex (PubMed:28781166). Component of splicing factor SF3B complex which is composed of at least eight subunits; SF3B1, SF3B2, SF3B3, SF3B4, SF3B5, SF3B6, PHF5A and DDX42 (PubMed:12234937, PubMed:12738865, PubMed:28541300, PubMed:27720643). SF3B associates with the splicing factor SF3A and a 12S RNA unit to form the U2 small nuclear ribonucleoproteins complex (U2 snRNP) (PubMed:12234937). Within the SF3B complex interacts directly with SF3B1 (via HEAT domain) and SF3B3 (PubMed:27720643). The SF3B complex composed of SF3B1, SF3B2, SF3B3, SF3B4, SF3B5, SF3B6 and PHF5A interacts with U2AF2 (PubMed:27720643). Component of the U11/U12 snRNPs that are part of the U12-type spliceosome (PubMed:15146077). {ECO:0000269|PubMed:12234937, ECO:0000269|PubMed:12738865, ECO:0000269|PubMed:15146077, ECO:0000269|PubMed:27720643, ECO:0000269|PubMed:28541300, ECO:0000269|PubMed:28781166}.

Subcellular location: Nucleus {ECO:0000269|PubMed:27720643, ECO:0000269|PubMed:28541300, ECO:0000269|PubMed:28781166}.

Similarity: Belongs to the SF3B5 family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.


Organism:		Homo sapiens (Human).
Taxonomy:		Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.



Function:		Involved in pre-mRNA splicing as a component of the splicing factor SF3B complex, a constituent of the spliceosome (PubMed:27720643, PubMed:28781166). 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). {ECO:0000269\|PubMed:12234937, ECO:0000269\|PubMed:27720643, ECO:0000269\|PubMed:28781166}.


Subunit:		Component of the spliceosome B complex (PubMed:28781166). Component of splicing factor SF3B complex which is composed of at least eight subunits; SF3B1, SF3B2, SF3B3, SF3B4, SF3B5, SF3B6, PHF5A and DDX42 (PubMed:12234937, PubMed:12738865, PubMed:28541300, PubMed:27720643). SF3B associates with the splicing factor SF3A and a 12S RNA unit to form the U2 small nuclear ribonucleoproteins complex (U2 snRNP) (PubMed:12234937). Within the SF3B complex interacts directly with SF3B1 (via HEAT domain) and SF3B3 (PubMed:27720643). The SF3B complex composed of SF3B1, SF3B2, SF3B3, SF3B4, SF3B5, SF3B6 and PHF5A interacts with U2AF2 (PubMed:27720643). Component of the U11/U12 snRNPs that are part of the U12-type spliceosome (PubMed:15146077). {ECO:0000269\|PubMed:12234937, ECO:0000269\|PubMed:12738865, ECO:0000269\|PubMed:15146077, ECO:0000269\|PubMed:27720643, ECO:0000269\|PubMed:28541300, ECO:0000269\|PubMed:28781166}.
Subcellular location:		Nucleus {ECO:0000269\|PubMed:27720643, ECO:0000269\|PubMed:28541300, ECO:0000269\|PubMed:28781166}.
Similarity:		Belongs to the SF3B5 family. {ECO:0000305}.