Chains and heterogens:
PDB Chain Sequences:
>1kfxL (L:) agiaaklakdreaaeglgsheraikylnqdyealrnecleagtlfqdpsfpaipsalgfk elgpyssktrgmrwkrpteicadpqfiiggatrtdicqgalgdcwllaaiasltlneeil arvvplnqsfqenyagifhfqfwqygewvevvvddrlptkdgellfvhsaegsefwsall ekayakingcyealsggattegfedftggiaewyelkkpppnlfkiiqkalqkgsllgcs iditsaadseaitfqklvkghaysvtgaeevesngslqklirirnpwgevewtgrwndnc pswntidpeererltrrhedgefwmsfsdflrhysrleicnltpdtltsdtykkwkltkm dgnwrrgstaggcrnypntfwmnpqylikleeededeedgesgctflvgliqkhrrrqrk mgedmhtigfgiyevpeelsgqtnihlsknffltnrarersdtfinlrevlnrfklppge yilvpstfepnkdgdfcirvfsekkadyqavddeieanleefdiseddiddgvrrlfaql agedaeisafelqtilrrvlakrqdiksdgfsietckimvdmldsdgsgklglkefyilw tkiqkyqkiyreidvdrsgtmnsyemrkaleeagfkmpcqlhqvivarfaddqliidfdn fvrclvrletlfkifkqldpentgtieldliswlcfsvl
>1kfxL (L:) agiaaklakdreaaeglgsheraikylnqdyealrnecleagtlfqdpsfpaipsalgfk elgpyssktrgmrwkrpteicadpqfiiggatrtdicqgalgdcwllaaiasltlneeil arvvplnqsfqenyagifhfqfwqygewvevvvddrlptkdgellfvhsaegsefwsall ekayakingcyealsggattegfedftggiaewyelkkpppnlfkiiqkalqkgsllgcs idkghaysvtgaeevesngslqklirirnpwgevewtgrwmsfsdflrhysrleicnltp dtltsdtykkwkltkmdgnwrrgstaggcrnypntfwmnpqylikleeedectflvgliq khrrrqrkmgedmhtigfgiyevpeetnihlsknffltnrarersdtfinlrevlnrfkl ppgeyilvpstfepnkdgdfcirvfsekkadyqavddeieanleefdiseddiddgvrrl faqlagedaeisafelqtilrrvlakrksdgfsietckimvdmldsdgsgklglkefyil wtkiqkyqkiyreidvdrsgtmnsyemrkaleeagfkmpcqlhqvivarfaddqliidfd nfvrclvrletlfkifkqldpentgtieldliswlcfsvl
>1kfxS (S:) neseevrqfrrlfaqlagddmevsatelmnilnkvvtrhpdlktdgfgidtcrsmvavmd sdttgklgfeefkylwnnikrwqaiykqfdtdrsgticsselpgafeaagfhlnehlynm iirrysdesgnmdfdnfisclvrldamfrafksldkdgtgqiqvniqewlqltmys