Anti-RAB3GEP antibodies enable researchers to detect and measure the RAB3GEP antigen in biological samples. This target is a reported synonym of the MADD gene, which encodes MAP kinase activating death domain. This protein is known to function in receptor-mediated signaling pathways and the apoptotic pathway, among other biological roles. The human version of RAB3GEP has a canonical amino acid length of 1647 residues and a protein mass of 183.3 kilodaltons, although 8 isoforms have been identified. It is reported to be localized in the cell membrane and cytoplasm of cells. Other names for this target antigen include DEEAH, DENN, and IG20.