HORMONE, INSULIN, METAL BINDING, COORDINATION, CONFROMATION, BILOGICAL ROLE, CARBOHYDRATE METABOLISM, CLEAVAGE ON PAIR OF BASIC RESIDUES, DIABETES MELLITUS, DISEASE MUTATION, DISULFIDE BOND, GLUCOSE METABOLISM, SECRETED CRYSTAL STRUCTURE OF HUMAN INSULIN COMPLEXED WITH CU+2 METAL ION 3IR0