disease:Defects in B2M are the cause of hypercatabolic hypoproteinemia [MIM:241600]. Affected individuals show marked reduction in serum concentrations of immunoglobulin and albumin, probably due to rapid degradation.,function:Beta-2-microglobulin is the beta-chain of major histocompatibility complex class I molecules.,online information:Beta-2-microglobulin entry,PTM:Glycation of Ile-21 is observed in long-term hemodialysis patients.,similarity:Belongs to the beta-2-microglobulin family.,similarity:Contains 1 Ig-like C1-type (immunoglobulin-like) domain.,
Secreted . Cell surface . Detected in serum and urine (PubMed:1336137, PubMed:7554280). .; (Microbial infection) In the presence of M.tuberculosis EsxA-EsxB complex decreased amounts of B2M are found on the cell surface (PubMed:25356553). .
Dendritic cell,Eye,Leukemia,Peripheral blood,Skin,Trachea,Urine,