Chains and heterogens:
PDB Chain Sequences:
>1foaA (A:) avipilviacdrstvrrcldkllhyrpsaelfpiivsqdcgheetaqviasygsavthir qpdlsniavqpdhrkfqgyykiarhyrwalgqifhnfnypaavvveddlevapdffeyfq atypllkadpslwcvsawndngkeqmvdsskpellyrtdffpglgwlllaelwaelepkw pkafwddwmrrpeqrkgracvrpeisrtmtfgrkgvshgqffdqhlkfiklnqqfvpftq ldlsylqqeaydrdflarvygapqlqvekvrtndrkelgevrvqytgrdsfkafakalgv mddlksgvpragyrgivtflfrgrrvhlappqtwdgydpswt