Anti-FAT2 antibodies are used in the immunodetection of the protein FAT atypical cadherin 2. In humans, the canonical protein has a reported length of 4349 amino acid residues and a mass of 479.3 kDa. Its subcellular localization is in the Golgi and cell membrane. It is notably expressed in the skin, oral mucosa, esophagus, cervix, and cerebellum. FAT2 is reported to be involved in regulation of cell migration. Post-translational modifications have been described, including glycosylation. The FAT2 gene has been associated with the disease, Spinocerebellar ataxia. Synonyms for this target antigen include CDHR9, HFAT2, MEGF1, SCA45, protocadherin Fat 2, FAT tumor suppressor homolog 2, cadherin family member 8, and CDHF8. FAT2 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Flow Cytometry, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are common applications for FAT2 antibodies.