You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All are TRUE about Gastrin, EXCEPT: and explain in detail?
Gastrin is produced from the endocrine cells of the gastric antrum. GASTRIN FUNCTION 1. Stimilate gastric acid secretion 2. Growth promotion of gastric mucosa and some cancers Precursor is: Preprogastrin - It has a 101 aminoacid structure. Gastrin has two major forms: G 34 and G 17. Common feature of all Gastrins: Amidated tetrapeptide (Try- Met-Asp-Phe-NH2) Glycine extended gastrin is the non amidated form of Gastrin. It is produced by colonic mucosa. It stimulates proliferation of normal colonic mucosa. In animals it stimulate the development of colorectal cancer. Ref: Sleisenger and Fordtrans, Edition-9, Page-6.