Automated description from the Alliance of Genome Resources (Release 7.0.0)
Enables several functions, including peptide antigen binding activity; protein antigen binding activity; and toxic substance binding activity. Involved in several processes, including B cell affinity maturation; cellular response to type II interferon; and positive regulation of T-helper 1 type immune response. Acts upstream of or within antigen processing and presentation of exogenous peptide antigen via MHC class II and immune response. Located in Golgi apparatus; endosome; and external side of plasma membrane. Part of MHC class II protein complex. Is expressed in several structures, including adipose tissue; bone; hemolymphoid system; liver; and lung. Used to study dilated cardiomyopathy and myocarditis. Human ortholog(s) of this gene implicated in several diseases, including allergic disease (multiple); autoimmune disease (multiple); bacterial infectious disease (multiple); hematologic cancer (multiple); and liver disease (multiple). Orthologous to several human genes including HLA-DQB1 (major histocompatibility complex, class II, DQ beta 1).
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