>1jca_D mol:protein length:30  insulin b
FVNQHLCGSHLVEALYLVCGERGFFYTPKT
>1jca_A mol:protein length:21  insulin a
GIVEQCCKSICSLYQLENYCN
>1jca_B mol:protein length:30  insulin b
FVNQHLCGSHLVEALYLVCGERGFFYTPKT
>1jca_D mol:protein length:30  insulin b
FVNQHLCGSHLVEALYLVCGERGFFYTPKT
>1jca_C mol:protein length:21  insulin a
GIVEQCCKSICSLYQLENYCN