Anti-D-AMINO ACID OXIDASE antibodies are used in the immunodetection of the protein encoded by the DAO gene. In humans, the canonical protein has a reported length of 347 amino acid residues and a mass of 39.5 kDa. Its subcellular localization is in the peroxisomes. A member of the DAMOX/DASOX protein family, it is reported to regulate the level of the neuromodulator D-serine in the brain. Other names for this target antigen include DAMOX, OXDA, and DAAO.