Anti-C2CD4D antibodies are used in the immunodetection of the protein C2 calcium dependent domain containing 4D. In humans, the canonical protein has a reported length of 353 amino acid residues and a mass of 37.6 kDa. Synonyms for this target antigen include C2 calcium-dependent domain-containing protein 4D and family with sequence similarity 148, member D. C2CD4D gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species.