Anti-all-trans retinoic acid-induced differentiation factor antibodies enable researchers to detect and measure the all-trans retinoic acid-induced differentiation factor antigen in biological samples. This target is a reported synonym of the ATRAID gene, which encodes all-trans retinoic acid induced differentiation factor. This protein is known to function in the differentiation of certain cell types, among other biological roles. The human version of all-trans retinoic acid-induced differentiation factor has a canonical amino acid length of 229 residues and a protein mass of 24.7 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the nucleus, lysosomes, and cell membrane of cells.