Beta-2 microglobulin

More reference expression dataBioGPSEnsemblUniProtRefSeq (mRNA)RefSeq (protein)Location (UCSC)Chr 15: 44.71 – 44.72 MbChr 2: 121.98 – 121.98 MbPubMed searchWikidata

β₂ microglobulin (B2M) is a component of MHC class I molecules. MHC class I molecules have α₁, α₂, and α₃ proteins which are present on all nucleated cells (excluding red blood cells). In humans, the β₂ microglobulin protein is encoded by the B2Mgene.