Anti-golgi membrane protein 2 antibodies are used for the immunodetection of the protein encoded by the GOLM2 gene. In humans, the canonical protein has a reported length of 436 amino acid residues and a mass of 49.5 kDa. Its subcellular localization is in the membrane. Alternative splicing is reported to yield 4 different isoforms for this protein. It is a member of the GOLM protein family. Other names for this target antigen include cancer susceptibility 4, cancer susceptibility candidate 4, cancer susceptibility candidate gene 4 protein, gene associated with HER-2/neu overexpression, protein CASC4, and protein GOLM2. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.