Chains and heterogens:
PDB Chain Sequences:
>1s1fA (A:) mteetisqavppvrdwpavdlpgsdfdpvltelmregpvtrislpngegwawlvtrhddv rlvtndprfgreavmdrqvtrlaphfipargavgfldppdhtrlrrsvaaaftargverv rersrgmldelvdamlragppadlteavlspfpiavicelmgvpatdrhsmhtwtqlils sshgaevseraknemnayfsdliglrsdsagedvtsllgaavgrdeitlseavglavllq iggeavtnnsgqmfhlllsrpelaerlrsepeirpraidellrwiphrnavglsrialed veikgvriragdavyvsylaanrdpevfpdpdridferspnphvsfgfgphycpggmlar lesellvdavldrvpglklavapedvpfkkgalirgpealpvtwha
>1s1fA (A:) qavppvrdwpavdlpgsdfdpvltelmregpvtrislpngegwawlvtrhddvrlvtndp rfgreavmdrqvtrlaphfipargavgfldppdhtrlrrsvaaaftargvervrersrgm ldelvdamlragppadlteavlspfpiavicelmgvpatdrhsmhtwtqlilssshgaev seraknemnayfsdliglrsdsagedvtsllgaavgrdeitlseavglavllqiggeavt nnsgqmfhlllsrpelaerlrsepeirpraidellrwiphrnavglsrialedveikgvr iragdavyvsylaanrdpevfpdpdridfernphvsfgfgphycpggmlarlesellvda vldrvpglklavapedvpfkkgalirgpealpvtwha