Chains and heterogens:
PDB Chain Sequences:
>4k9tA (A:) maylygthshglfkklgipgptplpflgnilsyhkgfcmfdmechkkygkvwgfydgqqp vlaitdpdmiktvlvkecysvftnrrpfgpvgfmksaisiaedeewkrlrsllsptftsg klkemvpiiaqygdvlvrnlrreaetgkpvtlkdvfgaysmdvitstsfgvnidslnnpq dpfventkkllrfdfldpfflsitvfpflipilevlnicvfprevtnflrksvkrmkesr ledtqkhrvdflqlmidsqnsketeshkalsdlelvaqsiififagyettssvlsfimye lathpdvqqklqeeidavlpnkapptydtvlqmeyldmvvnetlrlfpiamrlervckkd veingmfipkgvvvmipsyalhrdpkywtepekflperfskknkdnidpyiytpfgsgpr ncigmrfalmnmklalirvlqnfsfkpcketqiplklslggllqpekpvvlkvesrdgtv sgahhhh
>4k9tA (A:) shglfkklgipgptplpflgnilsyhkgfcmfdmechkkygkvwgfydgqqpvlaitdpd miktvlvkecysvftnrrpfgpvgfmksaisiaedeewkrlrsllsptftsgklkemvpi iaqygdvlvrnlrreaetgkpvtlkdvfgaysmdvitstsfgvnidslnnpqdpfventk kllrfdfldpfflsitvfpflipilevlnicvfprevtnflrksvkrmkesrledtdflq lmidsqalsdlelvaqsiififagyettssvlsfimyelathpdvqqklqeeidavlpnk apptydtvlqmeyldmvvnetlrlfpiamrlervckkdveingmfipkgvvvmipsyalh rdpkywtepekflperfskknkdnidpyiytpfgsgprncigmrfalmnmklalirvlqn fsfkpcketqiplklslggllqpekpvvlkvesrd