HLA-B alleles

{| id="drugInfoBox" style="float: right; clear: right; margin: 0 0 0.5em 1em; background: #ffffff;" class="toccolours" border=0 cellpadding=0 align="right" width="240px" |- align="center" | colspan="3" | thumb|HLA-B*2705-peptide (chain A shown in green cartoon, chain B shown in yellow cartoon) complexed to a fragment of the influenza nucleoprotein NP383-391 (orange, sticks). PDB ID 2BST |- style="text-align: center; line-height: 0.75;background:#eeeeee" | colspan="3" color="white" | B*2705-β2MG with bound peptide |- style="text-align: center; line-height: 1.00;background:#eeeeee" | colspan="

HLA-B (major histocompatibility complex, class I, B) is a human gene that provides instructions for making a protein that plays a critical role in the immune system. HLA-B is part of a family of genes called the human leukocyte antigen (HLA) complex. The HLA complex helps the immune system distinguish the body's own proteins from proteins made by foreign invaders such as viruses and bacteria.