>4iyf_B mol:protein length:29 Insulin B chain FVNQHLCGSHLVEALYLVCGERGFFYTPK >4iyf_B mol:protein length:29 Insulin B chain FVNQHLCGSHLVEALYLVCGERGFFYTPK >4iyf_A mol:protein length:21 Insulin A chain GIVEQCCTSICSLYQLENYCG