| ID | Sequence | Length | GC content |
|---|---|---|---|
| AGAGUCUCCUCAGACGCCGAGAUGCUGGUCAUGGCGCCCCGAACCGUCC… | 1536 nt | 0.5892 |
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] CIViC Summary for HLA-B Gene
A study in humans identified the HLA-B as a key hub protein from a protein-protein interaction network in cardiomyopathy, with receiver operating characteristic analysis showing an area under the curve of 0.738, indicating its diagnostic and prognostic potential [Rahman et al. DOI:10.1038/s41598-024-78011-3]. In a separate human study of chronic traumatic encephalopathy, transcriptome analysis found the HLA-B was specifically up-regulated, implicating it in the cell adhesion molecules pathway unique to this head trauma-related neurodegenerative disorder [Cho et al. DOI:10.1038/s41598-020-65916-y].