Chains and heterogens:
PDB Chain Sequences:
>1t6kA (A:) mhnyviidafasvplegnpvavffdaddlppaqmqriaremnlsestfvlkprnggdali riftpvnelpfaghpllgtaialgahtdnhrlyletqmgtiafelerqngsviaasmdqp iptwtalgrdaellkalgisdstfpieiyhngprhvfvglpsidalsalhpdhralsnfh dmaincfagagrrwrsrmfspaygvvedaatgsaagplaihlarhgqiefgqpveilqgv eigrpslmfakaegraeqltrvevsgngvtfgrgtivl