Chains and heterogens:
PDB Chain Sequences:
>1fxmA (A:) qaaqsvdqlikargkvyfgvatdqnrlttgknaaiiqadfgqvtpensmkwdatepsqgn fnfagadylvnwaqqngklirghtlvwhsqlpswvssitdkntltnvmknhittlmtryk gkirawdvvneafnedgslrqtvflnvigedyipiafqtaraadpnaklyindynldsas ypktqaivnrvkqwraagvpidgigsqthlsagqgagvlqalpllasagtpevaiteldv agasptdyvnvvnaclnvqscvgitvwgvadpdswrasttpllfdgnfnpkpaynaivqd lq