Homo sapiens major histocompatibility complex, class I, B (HLA-B)
Synonyms:
AS; HLAB; SPDA1
Immunogen
A synthetic peptide corresponding to residues in the extracellular domain of human HLA-B was used as an immunogen.
Buffer
Store at -20C. Buffer: 50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA. Stable for 12 months from date of receipt.
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 I molecule. Typing for these polymorphisms is routinely done for bone marrow and kidney transplantation. Hundreds of HLA-B alleles have been described (1).
Related Pathway
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