Anti-HLA-DQA antibodies enable researchers to detect and measure the HLA-DQA antigen in biological samples. This target is a reported synonym of the HLA-DQA1 gene, which encodes major histocompatibility complex, class II, DQ alpha 1. This protein is known to function in adaptive immune responses, among other biological roles. The human version of HLA-DQA has a canonical amino acid length of 254 residues and a protein mass of 27.8 kilodaltons. It is reported to be localized in the ER, Golgi, lysosomes, and cell membrane of cells and notably expressed in many tissues, such as the adrenal gland and endometrium. Other names for this target antigen include CELIAC1, DQ-A1, and DQA1.