LongevityMap variant

Entry Details

Longevity Association: Non-significant
Population: Dutch
Study Design: 964 inhabitants aged 85 years and over and 2444 young controls, aged 20-35 years, with an identical ethnic and demographic background were examined
Conclusions: Without correcting for multiple testing, HLA-B40 was lower in the group of 85 years and over, as compared to the control group

HGNC symbol: HLA-B
Aliases: AS; HLAB; B-4901
Common name: major histocompatibility complex, class I, B
Description: 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]
Other longevity studies of this gene: 3
OMIM: 142830
Ensembl: ENSG00000234745
UniProt/Swiss-Prot: 1B07_HUMAN
Entrez Gene: 3106
UniGene: 77961
HapMap: View on HapMap

CellAge gene expression

Lagaay et al. (1991)