Anti-NPP4 antibodies enable researchers to detect and measure the NPP4 antigen in biological samples. This target is a reported synonym of the ENPP4 gene, which encodes ectonucleotide pyrophosphatase/phosphodiesterase 4. The human version of NPP4 has a canonical amino acid length of 453 residues and a protein mass of 51.6 kilodaltons. It is reported to be localized in the cell membrane of cells and widely expressed in many tissue types. This target antigen may also be known as bis(5'-adenosyl)-triphosphatase ENPP4.