Anti-GP91-3 antibodies enable researchers to detect and measure the GP91-3 antigen in biological samples. This target is a reported synonym of the NOX3 gene, which encodes NADPH oxidase 3. This protein is reported to be a NADPH oxidase, which constitutively produces superoxide upon formation of a complex with CYBA/p22phox. The human version of GP91-3 has a canonical amino acid length of 568 residues and a protein mass of 64.9 kilodaltons. It is reported to be localized in the membrane of cells. This target antigen may also be known as GP91-3.