Chains and heterogens:
PDB Chain Sequences:
>1k731 (1:) rtgrfgpryglkirvrvadveikhkkkhkcpvcgfkklkragtgiwmcghcgykiaggcy qpetvagkavmka
>1k732 (2:) tgagtpsqgkknttthtkcrrcgeksyhtkkkvcsscgfgksakrrdyewqskage
>1k733 (3:) gkkskatkkrlakldnqnsrvpawvmlktdevqrnhkrrhwrrndtde
>1k733 (3:) gkkskatkkrlakldnqnsrvpawvmlktdernhkrrhwrrndtde
>1k734 (4:) mqmprrfntycphcnehqehevekvrsgrqtgmkwidrqrernsgigndgkfskvpggdk ptkktdlkyrcgecgkahlregwragrlefqe
>1k73C (C:) grriqgqrrgrgtstfrapshrykadlehrkvedgdviagtvvdiehdparsapvaavef edgdrrlilapegvgvgdelqvgvdaeiapgntlplaeipegvpvcnvesspgdggkfar asgvnaqllthdrnvavvklpsgemkrldpqcratigvvggggrtdkpfvkagnkhhkmk argtkwpnvrgvamnavdhpfggggrqhpgkpksisrnappgrkvgdiaskrtgrggne
>1k73C (C:) grriqgqrrgrgtstfrapshrykadlehrkvedgdviagtvvdiehdparsapvaavef edgdrrlilapegvgvgdelqvgvdaeiapgntlplaeipegvpvcnvesspgdggkfar asgvnaqllthdrnvavvklpsgemkrldpqcratigvvggggrtdkpfvkagnkhhkmk argtkwpnvrgvamnavdhpfggggrqhpgkpksisrnappgrkvgdiaskrtgrgg
>1k73D (D:) pqpsrprkgslgfgprkrstsetprfnswpsddgqpgvqgfagykagmthvvlvndepns pregmeetvpvtvietppmravalrayedtpygqrpltevwtdefhseldrtldvpedhd pdaaeeqirdaheagdlgdlrlithtvpdavpsvpkkkpdvmetrvgggsvsdrldhald ivedggehamndifrageyadvagvtkgkgtqgpvkrwgvqkrkgkharqgwrrrignlg pwnpsrvrstvpqqgqtgyhqrtelnkrlidigegdeptvdggfvnygevdgpytlvkgs vpgpdkrlvrfrpavrpndqprldpevryvsnesnqg
>1k73E (E:) mqatiydldgntdgevdlpdvfetpvrsdligkavraaqanrkqdygsdeyaglrtpaes fgsgrgqahvpkldgrarrvpqavkgrsahppktekdrsldlndkerqlavrsalaatad adlvadrghefdrdevpvvvsddfedlvktqevvsllealdvhadidradetkikagqgs argrkyrrpasilfvtsdepstaarnlagadvatasevntedlapggapgrltvftesal aevaer
>1k73F (F:) ssesesggdfhemrepriekvvvhmgighggrdlanaedilgeitgqmpvrtkakrtvge fdiregdpigakvtlrdemaeeflqtalplaelatsqfddtgnfsfgveehtefpsqeyd psigiygldvtvnlvrpgyrvakrdkasrsiptkhrlnpadavafiestydvevse
>1k73F (F:) fhemrepriekvvvhmgighanaedilgeitgqmpvrtkakrtvgefdiregdpigakvt lrdemaeeflqtalplaelatsqfddtgnfsfgldvtvnlvrpgyrvakrdkasrsiptk hrlnpadavafiestydvev
>1k73G (G:) prveleipedvdaeqdhlditvegdngsvtrrlwypdidvsvdgdtvviesdednaktms tigtfqshienmfhgvtegweygmevfyshfpmqvnvegdevvienflgekaprrttihg dtdveidgeeltvsgpdieavgqtaadieqltrindkdvrvfqdgvyitrkpnrgda
>1k73G (G:) prveleipedvdaeqdhlditvegdngsvtrrlwypdidvsvdgdtvviesdednaktms tigtfqshienmfhgvtegweygmevfyshfpmqvnvegdevvienflgekaprrttihg dtdveidgeeltvsgpdieavgqtaadieqltrindkdvrvfqdgvyitrkp
>1k73H (H:) pvyvdfdvpadleddalealevardtgavkkgtnettksiergsaelvfvaedvqpeeiv mhipeladekgvpfifveqqddlghaaglevgsaaaavtdagaaatvleeiadkveelr
>1k73I (I:) msaeserktetipewkqeevdaivemiesyesvgvvniagipsrqlqdmrrdlhgtaelr vsrntlleralddvddgledlngyitgqvgligtddnpfslfqeleasktpapigageva pndivipegdtgvdpgpfvgelqsvgadariqegsiqvlsdstvldtgeevsqelsnvln elgiepkevgldlravfadgvlfepeeleldideyrsdiqaaagrafnlsvnadyptatt aptmlqsdrgnakslalqaaiedpevvpdlvskadaqvralasqiddeealpeelqgvea dvateeptddqdddtaseddadaddaaeeadddddddedagdalgamf
>1k73I (I:) ipewkqeevdaivemiesrntlleraldd
>1k73J (J:) kpgamyrnsskpaytrreyisgipgkkiaqfdmgnngagptypaqvelvvekpvqirhna leaarvaanryvqnsgaaanykfrirkfpfhvirenkaaaaaaaaaaadgmrapfgkpvg taarvhganhifiawvnpdpnveeawrrakmkvtptinidsspagna
>1k73J (J:) kpgamyrnsskpaytrreyisgipgkkiaqfdmgnngagptypaqvelvvekpvqirhna leaarvaanryvqnsgaaanykfrirkfpfhvirenkdgmrapfgkpvgtaarvhganhi fiawvnpdpnveeawrrakmkvtptinidsspagna
>1k73K (K:) msvaefdadvivdardcimgrvasqvaeqaldgetvavvnaeravitgreeqivekyekr vdigndngyfypkrpdgifkrtirgmlphkkqrgreafesvrvylgnpydedgevldgts ldrlsnikfvtlgeisetlganktw
>1k73K (K:) aefdadvivdardcimgrvasqvaeqaldgetvavvnaeravitgreeqivekyekrvdi gndngyfypkrpdgifkrtirgmlphkkqrgreafesvrvylgnpydedgevldgtsldr lsnikfvtlgeisetlganktw
>1k73L (L:) mealgadvtqglekgslitcadntgarelkvisvhgysgtknrhpkaglgdkitvsvtkg tpemrrqvleavvvrqrkpirrpdgtrvkfednaavivdenedprgtelkgpiarevaqr fgsvasaatmiv
>1k73M (M:) tskkkrqrgsrthgggshknrrgaghrggrgdagrdkhefhnheplgksgfkrpqkvqee aatidvreidenvtllaaddvaevedggfrvdvrdvveeaddadyvkvlgagqvrheltl iaddfsegarekvegaggsveltdlgeerqaeaeetedadadee
>1k73M (M:) tskkkrqrgsrthgggshknrrgaghrggrgdagrdkhefhnheplgksgfkrpqkvqee aatidvreidenvtllaaddvaefrvdvrdvveeaddadyvkvlgagqvrheltliaddf segarekvegaggsveltdlgeerq
>1k73N (N:) arsaysyireawkrpkegqiaelmwhrmqewrnepavvrierptrldrarslgykakqgi ivvrvairkgssrrtrfnkgrrskrmmvnritrkkniqriaeeranrkfpnlrvlnsysv gedgrhkwhevilidpdhpaiksddqlswisrtrhrlrtfrgltsagrrcrglrgqgkgs ekvrpslrvngaka
>1k73O (O:) atgprykvpmrrrreartdyhqrlrllksgkprlvarksnkhvraqlvtlgpngddtlas ahssdlaeygweaptgnmpsayltgllaglraqeagveeavldiglnsptpgskvfaiqe gaidagldiphnddvladwqrtrgahiaeydeqleeplysgdfdaadlpehfdelretll dgdiel
>1k73P (P:) sktnprlssliadlksaarssggavwgdvaerlekprrthaevnlgrieryaqedetvvv pgkvlgsgvlqkdvtvaavdfsgtaetkidqvgeavsleqaiennpegshvrvir
>1k73Q (Q:) tdlsaqkrlaadvldvgknrvwfnperqgdiadaitredvrelvdegaiqakdkkgnsrg rarerqkkrakghqkgagsrkgkagarqnskedwesriraqrtklrelrdegtlsssqyr dlydkagggefdsvadleryidanhgda
>1k73Q (Q:) tdlsaqkrlaadvldvgknrvwfnperqgdiadaitredvrelvdegaiqakdkkgnsrg rarerqkkrakghqkgagsrkgkagarqnskedwesriraqrtklrelrdegtlsssqyr dlydkagggefdsvadleryida
>1k73R (R:) pssngplegtrgklknkprdrgtsppqraveefddgekvhlkidpsvpngrfhprfdgqt gtvegkqgdaykvdivdggkektiivtaahlrrqe
>1k73S (S:) gisysveadpdttakamlrerqmsfkhskaiareikgktageavdyleaviegdqpvpfk qhnsgvghkskvdgwdagrypekaskafldllenavgnadhqgfdgeamtikhvaahkvg eqqgrkpramgrasawnspqvdvelileepeved
>1k73S (S:) gisysveadpdttakamlrerqmsfkhskaiareikgktageavdyleaviegdqpvpfk qhnsgvghkskvdgwdagrypekaskafldllenavgnadhqgfdgeamtikhvaahkvg eqqgrkpramgrasawnspqvdvelileep
>1k73T (T:) swdvikhphvtekamndmdfqnklqfavddraskgevadaveeqydvtveqvntqntmdg ekkavvrlsedddaqevasrigvf
>1k73T (T:) swdvikhphvtekamndmdfqnklqfavddraskgevadaveeqydvtveqvntqntmdg ekkavvrlsedddaqevasri
>1k73U (U:) skqpdkqrksqrraplherhkqvratlsadlreeygqrnvrvnagdtvevlrgdfageeg evinvdldkavihvedvtlektdgeevprpldtsnvrvtdldledekrearleseddsa
>1k73V (V:) prtrecdycgtdiepgtgtmfvhkdgatthfcsskcennadlgrearnlewtdtargeag eaedea
>1k73V (V:) recdycgtdiepgtgtmfvhkdgatthfcsskcennadlgrearnlewtdtar
>1k73W (W:) tvlhvqeirdmtpaereaelddlktellnaravqaaggapenpgrikelrkaiariktiq geegdlqene
>1k73W (W:) tvlhvqeirdmtpaereaelddlktellnaravqaaggapenpgrikelrkaiariktiq geegd
>1k73X (X:) mhalvqlrgevnmhtdiqdtlemlnihhvnhctlvpetdayrgmvakvndfvafgepsqe tletvlatraeplegdadvddewvaehtdyddisglafallseettlreqglsptlrlhp prgghdgvkhpvkeggqlgkhdtegiddlleamr
>1k73Y (Y:) sasdfeervvtiplrdaraepnhkradkamilirehlakhfsvdedavrldpsineaawa rgrantpskirvraarfeeegeaiveaetae
>1k73Y (Y:) ervvtiplrdaraepnhkradkamilirehlakhfsvdedavrldpsineaawargrant pskirvraarfeeegeaiveae
>1k73Z (Z:) adneedveaeeeyteltdisgvgpskaeslreagfesvedvrgadqsaladvsgignala arikadvggleveseteaeveeeggeeapdedvetelqargltektpdlsdedarlltqr hrvgkpqfnrqdhhkkkrvstswrkprgqlskqrrgikgkgdtveagfrsptavrgkhps gfeevrvhnvddlegvdgdteavriaskvgarkrerieeeaedagirvlnptyvevevse
>1k73Z (Z:) telqargltektpdlsdedarlltqrhrvgkpqfnrqdhhkkkrvstswrkprgqlskqr rgikgkgdtveagfrsptavrgkhpsgfeevrvhnvddlegvdgdteavriaskvgarkr erieeeaedagirvlnptyvev