Chains and heterogens:
PDB Chain Sequences:
>1goqA (A:) eaaqsvdqlikargkvyfgvatdqnrlttgknaaiiqadfgqvtpensmkwdatepsqgn fnfagadylvnwaqqngklirghtlvwhsqlpswvssitdkntltnvmknhittlmtryk gkirawdvvneafnedgslrqtvflnvigedyipiafqtaraadpnaklyindynldsas ypktqaivnrvkqwraagvpidgigsqthlsagqgagvlqalpllasagtpevaiteldv agasptdyvnvvnaclnvqscvgitvwgvadpdswrasttpllfdgnfnpkpaynaivqd lqq