β2-Microglobulin belongs to the β-globulin family of human plasma proteins and is the light chain subunit of the class 1 histocompatibility leukocyte antigen complex, which is found on the cell surfaces of all nucleated cells. It is involved in the regulation and rejection of transplanted tissues.
Because of its low molecular weight (11,800kD), β2-Microglobulin is excreted in the urine where increased levels are found in the catabolic dysfunction of the proximal renal tubules and in inflammatory disorders. In addition, increased levels may be associated with multiple myeloma, nasopharyngeal carcinoma, and HIV-1 disease progression.
β2-Microglobulin is purified from the urine of patients with chronic renal tubular proteinuria. It is supplied as a lyophilized preparation in two purity grades: >40% (cat. no. M0113) and >95% (cat. no. M0114) by SDS-PAGE.
Please note that a β2-Microglobulin Monoclonal Antibody is also available.
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