Chains and heterogens:
PDB Chain Sequences:
>1flzA (A:) aneltwhdvlaeekqqphflntlqtvaserqsgvtiyppqkdvfnafrftelgdvkvvil gqdpyhgpgqahglafsvrpgiaippsllnmykelentipgftrpnhgyleswarqgvll lntvltvragqahshaslgwetftdkvislinqhregvvfllwgshaqkkgaiidkqrhh vlkaphpsplsahrgffgcnhfvlanqwleqhgetpidwmpvlpaese