Anti-NPY4R antibodies are used in the immunodetection of the protein neuropeptide Y receptor Y4. In humans, the canonical protein has a reported length of 375 amino acid residues and a mass of 42.2 kDa. Its subcellular localization is in the cell membrane. It is notably expressed in soft tissue, small intestine, skin, rectum, and colon. A member of the G-protein coupled receptor 1 protein family, NPY4R is a G protein-coupled receptor for PPY/pancreatic polypeptide/PP, NPY/neuropeptide Y and PYY/peptide YY that is negatively coupled to cAMP. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include PPYR1, Y4, neuropeptide Y receptor type 4, pancreatic polypeptide receptor 1, and PP1. Some NPY4R antibodies may have been used in research and have associated citations. Immunohistochemistry is a widely used application for these antibodies. In addition, Western Blot is also a common application.