Anti-melanoma inhibitory activity 2 antibodies enable researchers to detect and measure the melanoma inhibitory activity 2 antigen in biological samples. This target is a reported synonym of the MIA2 gene, which encodes MIA SH3 domain ER export factor 2. This protein is known to function in Golgi transport, among other biological roles. The human version of melanoma inhibitory activity 2 has a canonical amino acid length of 1412 residues and a protein mass of 159.8 kilodaltons, although 12 isoforms have been identified. It is reported to be localized in the ER of cells and widely expressed in many tissue types. Other names for this target antigen include CTAGE5, MEA6, and MGEA.