Chains and heterogens:
PDB Chain Sequences:
>1pnfA (A:) apadntvniktfdkvknafgdglsqsaegtftfpadvttvktikmfiknecpnktcdewd ryanvyvknkttgewyeigrfitpywvgteklprgleidvtdfksllsgntelkiytetw lakgreysvdfdivygtpdykysavvpviqynkssidgvpygkahtlglkkniqlptnte kaylrttisgwghakpydagsrgcaewcfrthtiainnantfqhqlgalgcsanpinnqs pgnwapdragwcpgmavptridvlnnsltgstfsyeykfqswtnngtngdafyaissfvi aksntpisapvvtn