Cholecystokinin

More reference expression dataBioGPSEnsemblUniProtRefSeq (mRNA)RefSeq (protein)Location (UCSC)Chr 3: 42.26 – 42.27 MbChr 9: 121.32 – 121.32 MbPubMed searchWikidata

Cholecystokinin (CCK or CCK-PZ; from Greekchole'bile', cysto'sac', kinin'move'; hence, 'move the bile-sac', i.e., the gallbladder) is a peptide hormone of the gastrointestinal system responsible for stimulating the digestion of fat and protein. Cholecystokinin, formerly called pancreozymin, is synthesized and secreted by enteroendocrine cells in the duodenum, the first segment of the small intestine. Its presence causes the release of pancreatic juice from the pancreas and bile from the gallbladder.