Tbio P01889 HLA class I histocompatibility antigen, B-7 alpha chain

Protein Summary

Description

Involved in the presentation of foreign antigens to the immune system. HLA-B belongs to the HLA class I heavy chain paralogues. This class I molecule is a heterodimer consisting of a heavy chain and a light chain (beta-2 microglobulin). The heavy chain is anchored in the membrane. Class I molecules play a central role in the immune system by presenting peptides derived from the endoplasmic reticulum lumen. They are expressed in nearly all cells. The heavy chain is approximately 45 kDa and its gene contains 8 exons. Exon 1 encodes the leader peptide, exon 2 and 3 encode the alpha1 and alpha2 domains, which both bind the peptide, exon 4 encodes the alpha3 domain, exon 5 encodes the transmembrane region and exons 6 and 7 encode the cytoplasmic tail. Polymorphisms within exon 2 and exon 3 are responsible for the peptide binding specificity of each class one molecule. Typing for these polymorphisms is routinely done for bone marrow and kidney transplantation. Hundreds of HLA-B alleles have been described. [provided by RefSeq, Jul 2008]

Uniprot Accession IDs

• P01889
• Q29638
• Q29681
• Q29854
• Q29861
• Q31613
• Q5SRJ2
• Q9GIX1
• Q9TP95

Gene Name

• HLA-B

Ensembl ID

• ENST00000412585
• ENSP00000399168
• ENSG00000234745

Symbol

• HLAB
• AS
• HLAB
• B-4901

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
biological process	0
biological term	0
cell line	0
cell type or tissue	0
cellular component	0

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: 4695.85   (req: < 5)

Gene RIFs: 985   (req: <= 3)

Antibodies: 650   (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: 4695.85   (req: >= 5)

Gene RIFs: 985   (req: > 3)

Antibodies: 650   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 16

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