insulin peptide hormone, chemical structure. important drug in treatment of diabetes. shown in het hexameric form, bound to zinc

pdb1trz insulin insuline hexamer hexameric zinc diabetes drug beta cells pancreas glucose blood sugar plasma level metabolism glycogen triglyceride fat metabolic syndrome dimer disulfide proinsulin hypoglycemia hyperglycemia mellitus therapy injection endocrinology endocrinologist structure peptide protein amino acid molecule polypeptide polymer atoms