Definition: Transmembrane proteins that form the alpha subunits of the HLA-DR antigens. They are also referred to as the HLA-DR heavy chains.
Other names alpha-Chains, HLA-DR; alpha-Chain, HLA-DR; Heavy Chain, HLA-DR; HLA DR alpha Chains; HLA DR alpha Chain; HLA DR alpha; HLA DR Heavy Chain; MHC Class II Antigen DRA; HLA-DRA; HLA-DR Heavy Chain; HLA Class II Histocompatibility Antigen, DR alpha ; HLA-DR alpha-Chain; HLA-DR alpha
