Insulin is the primary polypeptide hormone responsible for controlling the cellular uptake, utilization and storage of glucose, amino acids and fatty acids while inhibiting the breakdown of glycogen, protein and fat. It is produced by pancreatic beta cells. Methods for immobilizing insulin on…

Isodesmosine is prepared according to the method of Starcher, et al. from hdrolyzed bovine neck ligament by solvent extraction and chromatography on Dowex 50.