Anti-PNPLA4 antibodies are used in the immunodetection of the protein patatin like phospholipase domain containing 4. In humans, the canonical protein has a reported length of 253 amino acid residues and a mass of 28 kDa. Its subcellular localization is in the mitochondria. Up to 2 different isoforms have been reported for this protein. It is reported to be expressed in all tissues examined, including heart, brain, placenta, lung, liver, muscle, kidney, pancreas and spleen. PNPLA4 is known to have abundant triacylglycerol lipase activity. Synonyms for this target antigen include GS2, patatin-like phospholipase domain-containing protein 4, IPLA2 eta, calcium independent phospholipases A2 eta, and DXS1283E. PNPLA4 gene orthologs have been reported in the rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some PNPLA4 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.