With a half-life of only 71 minutes, this hormone 
With a half-life of only 71 minutes, this hormone degrades quickly but is not required by the brain. Frederick Banting discovered this hormone whose primary structure of two polypeptide chains was determined by Frederick (*) Sanger. It is produced in the beta cells of the islets of Langerhans, and works with glucagon to maintain stable blood sugar levels. For 10 points, name this pancreatic hormone, a deficiency of which causes diabetes.
With a half-life of only 71 minutes, this hormone degrades quickly but is not required by the brain.
insulin