Anti-P2RY4 antibodies are used in the immunodetection of the protein pyrimidinergic receptor P2Y4. In humans, the canonical protein has a reported length of 365 amino acid residues and a mass of 41 kDa. Its subcellular localization is in the cell membrane. A member of the G-protein coupled receptor 1 protein family, P2RY4 is a known receptor for UTP and UDP coupled to G-proteins that activate a phosphatidylinositol-calcium second messenger system. Post-translational modifications have been described, including phosphorylation. Synonyms for this target antigen include P2P, P2Y4, UNR, P2Y purinoceptor 4, pyrimidinergic receptor P2Y, G-protein coupled, 4, and NRU. P2RY4 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. A number of P2RY4 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunofluorescence, and Immunohistochemistry are also common applications.