A peptide hormone (PYY) with anorectic properties secreted from endocrine cells in the lower small intestine, colon, and pancreas. It inhibits gastric acid secretion, gastric emptying, pancreatic enzyme secretion and gut motility. Has marked homology with pancreatic peptide PPY2. PYY1 is a 98-aa peptide but PYY2 has only 33 aa because of its alternative start site.
Subjects: Medicine and Health — Chemistry.