Anti-NPT4 antibodies enable researchers to detect and measure the NPT4 antigen in biological samples. This target is a reported synonym of the SLC17A3 gene, which encodes solute carrier family 17 member 3. This protein is known to function in carbohydrate metabolism and homeostasis and the transport of ions, among other biological roles. The human version of NPT4 has a canonical amino acid length of 420 residues and a protein mass of 46.1 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the ER and cell membrane of cells. Other names for this target antigen include GOUT4 and UAQTL4.