Predicted to enable several functions, including MHC class II protein complex binding activity; T cell receptor binding activity; and peptide antigen binding activity. Predicted to be involved in several processes, including antigen processing and presentation of endogenous peptide antigen via MHC class II; antigen processing and presentation of exogenous peptide antigen via MHC class II; and regulation of T cell differentiation. Predicted to be located in bounding membrane of organelle; cell surface; and immunological synapse. Predicted to be part of MHC class II protein complex. Biomarker of prediabetes syndrome. Human ortholog(s) of this gene implicated in Parkinson's disease (multiple); allergic disease; asthma; and autoimmune disease (multiple). Orthologous to human HLA-DRA (major histocompatibility complex, class II, DR alpha). [provided by Alliance of Genome Resources, Apr 2022]