Anti-RP57 antibodies enable researchers to detect and measure the RP57 antigen in biological samples. This target is a reported synonym of the PDE6G gene, which encodes phosphodiesterase 6G. This protein is known to function in MAPK cascade signaling pathways, among other biological roles. The human version of RP57 has a canonical amino acid length of 87 residues and a protein mass of 9.6 kilodaltons. It is reported to be notably expressed in the retina. Other names for this target antigen include PDEG and retinal rod rhodopsin-sensitive cGMP 3',5'-cyclic phosphodiesterase subunit gamma.