>4gbk_A mol:protein length:21 Insulin A chain
GIVEQCCTSICSLYQLENYCN
>4gbk_C mol:protein length:21 Insulin A chain
GIVEQCCTSICSLYQLENYCN
>4gbk_B mol:protein length:30 Insulin B chain
FVNQHLCGSHLVEALYLVCGERGFFYTDKT
>4gbk_D mol:protein length:30 Insulin B chain
FVNQHLCGSHLVEALYLVCGERGFFYTDKT