Chains and heterogens:
PDB Chain Sequences:
>1fpwA (A:) mgaktsklskddltclkqstyfdrreiqqwhkgflrdcpsgqlaredfvkiykqffpfgs pedfanhlftvfdkdnngfihfeefitvlsttsrgtleeklswafelydlnhdgyitfde mltivasvykmmgsmvtlnedeatpemrvkkifklmdknedgyitldefregskvdpsii galnlydgli