Anti-FMO4 antibodies are used in the immunodetection of the protein flavin containing dimethylaniline monoxygenase 4. In humans, the canonical protein has a reported length of 558 amino acid residues and a mass of 63.3 kDa. Its subcellular localization is in the ER. It is notably expressed in the liver. A member of the FMO protein family, Fmo4 is known to be involved in the oxidative metabolism of a variety of xenobiotics such as drugs and pesticides. Synonyms for this target antigen include dimethylaniline monooxygenase [N-oxide-forming] 4, dimethylaniline oxidase 4, flavin containing monooxygenase 4, hepatic flavin-containing monooxygenase 4, and FMO2. FMO4 gene orthologs have been reported in the mouse, rat, bovine, chimpanzee and chicken species. Some Fmo4 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. Immunofluorescence and Immunohistochemistry are also common applications.