The DQ-A1 ELISA kits listed below are analytical tools for measuring concentrations of DQ-A1 in various samples. DQ-A1 is an alternative name for the human HLA-DQA2 gene, which encodes the protein, major histocompatibility complex, class II, DQ alpha 2. It has been mentioned that DQ-A1 plays a role in adaptive immune responses, among other functions. Structurally, the HLA-DQA2 protein is described to be 255 amino acid residues in length and 28 kilodaltons in mass. It is localized to the ER, golgi, lysosomes, and cell membrane of the cell. This protein is known to be glycosylated. Other names for this target antigen include DC-alpha and DX-ALPHA.