Anti-Qa1 antibodies enable researchers to detect and measure the Qa1 antigen in biological samples. This target is a reported synonym of the HLA-E gene, which encodes major histocompatibility complex, class I, E. This protein is known to function in adaptive immune responses, among other biological roles. The human version of Qa1 has a canonical amino acid length of 358 residues and a protein mass of 40.1 kilodaltons. It is reported to be localized in the Golgi, cell membrane, and is secreted of cells and notably expressed in many tissues, such as the kidney and lung. This target antigen may also be known as HLA-6.2. These Qa1 antibodies are widely used in Western Blot experiments, among other applications.