Recombinant Human Cholecystokinin protein

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Cholecystokinin often referenced as CCK is a peptide hormone with a mass of approximately 8 kDa. It plays a mechanical role by being released from the I-cells in the small intestine particularly the duodenum. This release occurs in response to nutrients in the gut such as fats and proteins. Cholecystokinin acts by binding to its receptors CCK-A and CCK-B to execute its functions. In addition to the gut CCK is expressed in the central nervous system where it contributes to diverse neurological functions.

Biological function summary

Beyond its presence in the digestive system cholecystokinin is important for stimulating digestive enzymes secretion from the pancreas and bile release from the gallbladder. This peptide is also part of the central nervous system where it influences appetite control satiety and anxiety regulation. While not part of a classic protein complex CCK interacts with various receptors and enzymes to perform its roles in these physiological processes.

Pathways

Several important physiological pathways include cholecystokinin to regulate digestive processes and satiety signals. It is significant in the digestion pathway interacting chiefly with proteins such as trypsinogen and pancreatic lipase enhancing the breakdown of nutrients. In the neural pathway CCK influences neurotransmitter release including dopamine and serotonin highlighting its role in appetite suppression and mood regulation.

Cholecystokinin has been implicated in gastrointestinal and neurological conditions. It links to gallstone disease by influencing bile composition and flow which can affect the development of gallstones. Additionally CCK has connections to anxiety disorders given its impact on neurotransmitter systems within the brain. The peptide's engagement with CCK receptors makes it a target for studying these disorders as alterations in its signaling can contribute to disease pathology.