Chains and heterogens:
PDB Chain Sequences:
>1pf3A (A:) aerptlpipdllttdarnriqltigagqstfggktattwgyngnllgpavklqrgkavtv diynqlteettlhwhglevpgevdggpqgiippggkrsvtlnvdqpaatcwfhphqhgkt grqvamglaglvvieddeilklmlpkqwgiddvpvivqdkkfsadgqidyqldvmtaavg wfgdtlltngaiypqhaaprgwlrlrllngcnarslnfatsdnrplyviasdggllpepv kvselpvlmgerfevlvevndnkpfdlvtlpvsqmgmaiapfdkphpvmriqpiaisasg alpdtlsslpalpslegltvrklqlsmdpmldmmgmqmlmekygdqamagmdhsqmmghm ghgnmnhmnhggkfdfhhankingqafdmnkpmfaaakgqyerwvisgvgdmllhpfhih gtqfrilsengkppaahragwkdtvkvegnvsevlvkfnhdapkehaymahchllehedt gmmlgftvsawshpnfek
>1pf3A (A:) rptlpipdllttdarnriqltigagqstfggktattwgyngnllgpavklqrgkavtvdi ynqlteettlhwhglevpgevdggpqgiippggkrsvtlnvdqpaatcwfhphqhgktgr qvamglaglvvieddeilklmlpkqwgiddvpvivqdkkfsadgqidyqldvmtaavgwf gdtlltngaiypqhaaprgwlrlrllngcnarslnfatsdnrplyviasdggllpepvkv selpvlmgerfevlvevndnkpfdlvtlpvsqmgmaiapfdkphpvmriqpiaisasgal pdtlsslpalpslegltvrklqlsmdpmldmmgmqmlmekygdqamagmdfhhankingq afdmnkpmfaaakgqyerwvisgvgdmllhpfhihgtqfrilsengkppaahragwkdtv kvegnvsevlvkfnhdapkehaymahchllehedtgmmlgftv