Anti-P2X3 antibodies enable researchers to detect and measure the P2X3 antigen in biological samples. This target is a reported synonym of the P2RX3 gene, which encodes purinergic receptor P2X 3. This protein is known to function in cellular localization and the transport of ions, among other biological roles. The human version of P2X3 has a canonical amino acid length of 397 residues and a protein mass of 44.3 kilodaltons. It is reported to be localized in the cell membrane of cells. Other names for this target antigen include P2X purinoceptor 3 and ATP receptor.