2. Insulin Hormone: Invented by Banting and Best, 1921
Structure of Insulin:
Two chains of 30 and 21 amino acids, linked with disulphide bonds
3. Human Insulin is produced in Escherichia coli by inserting gene of insulin with suitable vector.
Product is known as Humulin, was produced by Eli Lily by Recombinant DNA Technology
Formation of Precursor pro-insulin