Anti-PNR antibodies enable researchers to detect and measure the PNR antigen in biological samples. This target is a reported synonym of the TAAR5 gene, which encodes trace amine associated receptor 5. This protein is known to function in GPCR signaling pathways, among other biological roles. The human version of PNR has a canonical amino acid length of 337 residues and a protein mass of 38.2 kilodaltons. It is reported to be localized in the cell membrane of cells. PNR is a member of the G-protein coupled receptor 1 protein family.