>3zu1_A mol:protein length:21  INSULIN A CHAIN
GIVEQCCTSICSLYQLENYCN
>3zu1_B mol:protein length:30  INSULIN B CHAIN
FVNQHLCGSHLVEALYLVCGERGFFYTPKT
>3zu1_D mol:protein length:30  INSULIN B CHAIN
FVNQHLCGSHLVEALYLVCGERGFFYTPKT
>3zu1_C mol:protein length:21  INSULIN A CHAIN
GIVEQCCTSICSLYQLENYCN
>3zu1_D mol:protein length:30  INSULIN B CHAIN
FVNQHLCGSHLVEALYLVCGERGFFYTPKT