Chains and heterogens:
PDB Chain Sequences:
>1tixA (A:) asaqsvdqlikargkvyfgvatdqnrlttgknaaiiqadfgqvtpensmkwdatepsqgn fnfagadylvnwaqqngklirghtlvwhsqlpswvtsitdkntltnvmknhittlmtryk gkirawdvvneafnqngslrstvflnvigedyipiafqtaraadpnaklyindynldsat ypktqaivnrvkqwraagvpidgigsqthlsagqgagvlnalpllasagtpevaiteldv agasptdyvnvvnaclnvsscvgitvwgvadpdswrasttpllfdgnfnpkpaynaivqn lq