Pancreatic Polypeptide, rat, is an agonist of the NPY receptor with high affinity at NPYR4. Pancreatic polypeptide (PP) is a 36-amino acid, C-terminally amidated peptide, and a member of the PP-fold peptide family, produced and secreted by the PP cells.
Endogenous high affinity agonist for human NPY Y4 receptor (Ki = 0.056 nM). Believed to play an important role in the function of the gastrointestinal tract.