8D0K: CST complex subunit CTC1

Human CST-DNA polymerase alpha/primase preinitiation complex bound to 4xTEL-foldback template - PRIM2C advanced PIC. Determined by electron microscopy at 4.27 Å resolution. Released 22 Jun 2022.

Method
Electron microscopy
Resolution
4.27 Å
Organism
Homo sapiens
Chains
8
Atoms
31,011
Mol. weight
568.8 kDa
Released
22 Jun 2022

Explore 8D0K in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

8D0K contains 173 α-helices and 190 β-strands across 7 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 43 helices, 76 β-strands

ElementResiduesLengthSheet
α-helix10-2617
α-helix38-5215
β-strand66-6721
α-helix70-767
β-strand81-8442
α-helix89-9810
α-helix105-1073
β-strand10812
β-strand111-11221
β-strand114-11853
β-strand134-13743
β-strand140-14343
β-strand144-14522
β-strand157-15933
β-strand162-16652
β-strand178-18032
α-helix184-1852
β-strand186-18723
α-helix193-1953
β-strand201-20224
β-strand20415
α-helix206-2149
α-helix216-2183
β-strand224-233105
β-strand23716
β-strand24416
β-strand245-25065
β-strand259-26355
α-helix266-2738
β-strand280-28895
β-strand299-30135
β-strand307-30935
β-strand315-31624
β-strand351-35227
β-strand354-367148
β-strand372-37548
β-strand379-38248
β-strand400-409108
β-strand41319
β-strand41619
β-strand420-431128
α-helix437-4393
α-helix442-4443
α-helix450-4545
α-helix455-4606
α-helix464-48118
α-helix488-4914
β-strand496110
β-strand499110
α-helix502-51413
α-helix519-5224
α-helix524-5296
β-strand539-54027
β-strand548111
α-helix552-56514
α-helix569-5724
α-helix578-5803
α-helix583-5908
β-strand592-597612
α-helix599-6013
β-strand606111
β-strand608-614713
β-strand621-624413
β-strand631113
β-strand633-635312
β-strand641112
β-strand651-654413
β-strand658-6671012
α-helix673-6753
β-strand681-6931312
β-strand698-700313
β-strand729-7381014
α-helix739-7413
β-strand742-744315
β-strand746116
α-helix748-7492
α-helix756-7583
β-strand760-762315
β-strand763-769714
β-strand774-775214
β-strand776-777217
β-strand780-781217
α-helix783-7886
β-strand795-800614
α-helix802-8109
β-strand816-821614
β-strand842116
β-strand859-862414
α-helix869-8724
α-helix878-8792
α-helix883-8875
β-strand896-9081318
β-strand928-934718
α-helix943-9442
β-strand945-951718
α-helix956-9583
β-strand966-9761118
β-strand982-985418
β-strand991-994418
α-helix997-9993
α-helix1006-10083
β-strand1009119
α-helix1014-10163
β-strand1024-10432019
α-helix10481
β-strand1049119
β-strand1050-1051220
β-strand1054-1055220
β-strand1067-10781219
β-strand1084-1089619
α-helix1091-10966
α-helix1101-111111
β-strand1117-1119319
α-helix1137-114610
β-strand1154-1161819
β-strand1175-1177321
β-strand1188-1190321
α-helix1191-11933
β-strand1194-1202919
Chain B: 16 helices, 19 β-strands
ElementResiduesLengthSheet
α-helix10-134
α-helix14-196
β-strand27-28222
α-helix31-366
β-strand39123
β-strand47-49323
β-strand52-54323
β-strand57-681222
β-strand72124
β-strand73-78622
β-strand83-87522
β-strand89124
α-helix104-12421
β-strand131-136622
β-strand138-141422
β-strand144-148522
β-strand151-154422
α-helix162-17312
α-helix174-1785
α-helix201-21818
β-strand224-225225
α-helix226-2305
α-helix233-2397
α-helix242-2465
α-helix255-27622
β-strand280-282325
β-strand290-293425
α-helix294-2963
α-helix298-30912
α-helix311-3133
β-strand322-323226
α-helix324-33411
α-helix341-35313
β-strand358-361426
β-strand364-366326
Chain C: 3 helices, 6 β-strands
ElementResiduesLengthSheet
β-strand8-9227
α-helix12-165
β-strand25-361227
β-strand41-48827
β-strand51-58827
β-strand72-811027
β-strand87-95927
α-helix102-11918
α-helix120-1223
Chain D: 27 helices, 14 β-strands
ElementResiduesLengthSheet
α-helix9-1911
α-helix23-319
α-helix32-343
α-helix40-423
β-strand43-45328
β-strand48-49229
β-strand53-54229
α-helix63-7311
β-strand79-84628
α-helix88-936
β-strand101-103328
β-strand106-111630
α-helix112-1154
α-helix129-1313
α-helix132-14514
α-helix146-1505
β-strand157-159330
β-strand164-169630
α-helix179-18911
α-helix210-22314
α-helix224-2318
α-helix237-2437
α-helix244-2463
α-helix249-2513
α-helix252-26110
α-helix265-28117
α-helix292-30110
α-helix307-3115
β-strand317-318228
α-helix3191
β-strand323131
β-strand329132
β-strand330131
α-helix3311
β-strand333130
α-helix339-3413
α-helix344-3463
β-strand349132
α-helix350-36718
α-helix375-38511
α-helix389-41729
Chain E: 28 helices, 5 β-strands
ElementResiduesLengthSheet
α-helix17-215
β-strand36-37233
α-helix39-6224
α-helix69-8012
α-helix93-10917
α-helix114-13320
α-helix137-14610
β-strand153134
α-helix156-1616
α-helix163-1686
β-strand184-187434
α-helix188-1903
α-helix192-1965
β-strand201-202234
β-strand206-209434
α-helix212-23423
α-helix238-2403
α-helix247-2537
α-helix268-2703
α-helix276-2838
α-helix286-29813
α-helix303-31513
α-helix320-33213
α-helix338-3403
α-helix341-3455
α-helix346-3527
α-helix363-3664
α-helix367-3715
α-helix374-3763
α-helix391-40010
α-helix405-41612
α-helix420-43213
α-helix444-45411
Chain F: 40 helices, 42 β-strands
ElementResiduesLengthSheet
β-strand332-333235
β-strand339-340235
β-strand341-3501036
β-strand359-367936
β-strand372-380936
α-helix3831
β-strand384-391837
α-helix410-4167
α-helix417-4215
α-helix422-4254
β-strand431-438837
β-strand449-4581037
α-helix462-4654
β-strand473-477537
α-helix483-4897
β-strand498-501436
β-strand505136
β-strand512138
β-strand516-520536
β-strand526-529436
α-helix533-5364
β-strand537-5481239
β-strand555-5681439
β-strand581-586639
α-helix594-5952
α-helix598-6058
β-strand609-611339
α-helix615-62915
β-strand633-636439
α-helix639-6435
α-helix644-65411
α-helix659-6624
β-strand665138
α-helix679-6846
β-strand689-692439
α-helix693-7008
α-helix708-7158
α-helix725-7317
α-helix735-75925
α-helix761-77212
α-helix776-7805
α-helix784-79714
β-strand801137
β-strand844140
β-strand856-861640
α-helix864-8729
α-helix901-9033
α-helix907-9082
α-helix911-92818
α-helix936-96126
α-helix970-99223
β-strand998-1002540
β-strand1005-1009540
α-helix1015-103218
β-strand1038-1044740
β-strand1048-1049240
β-strand1055-1062840
β-strand1068-1074740
α-helix1269-12724
α-helix1277-12782
β-strand1279-1282441
β-strand1289-1292441
β-strand1296-1297242
α-helix1300-13023
β-strand1304-1305242
α-helix1319-13224
α-helix1323-134119
β-strand1346-1348343
β-strand1356-1357243
β-strand1364144
β-strand1369144
β-strand1370145
α-helix13711
β-strand1378145
β-strand1379-1381343
α-helix1385-139713
α-helix1401-14077
α-helix1411-142010
α-helix1424-144219
α-helix1445-14473
β-strand1449-1450233
α-helix1451-14544
Chain G: 16 helices, 28 β-strands
ElementResiduesLengthSheet
α-helix148-1514
α-helix159-1624
β-strand170-175646
β-strand194-196347
α-helix213-23523
β-strand247-2591348
β-strand270-273448
β-strand283-287548
β-strand294-296349
β-strand300-308948
β-strand314-316348
α-helix324-3263
β-strand327150
α-helix3281
α-helix332-3365
β-strand339-345746
α-helix358-37013
β-strand374-378546
α-helix387-3904
α-helix398-41619
β-strand419-423546
β-strand435151
β-strand437152
α-helix438-4403
α-helix449-4513
β-strand453-455346
α-helix4571
β-strand458152
β-strand460-464547
β-strand467-471547
α-helix476-4827
β-strand485-487349
α-helix494-50512
β-strand520151
α-helix522-5287
β-strand534150
β-strand537-539347
β-strand547-551547
β-strand554-558547
β-strand563-564253
β-strand567-568253
β-strand570-577846
α-helix578-5803
β-strand592-597646

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
CST complex subunit CTC1Aprotein1246Homo sapiensQ2NKJ3 (AlphaFold model)
CST complex subunit STN1Bprotein374Homo sapiensQ9H668 (AlphaFold model)
CST complex subunit TEN1Cprotein152Homo sapiensQ86WV5 (AlphaFold model)
DNA primase small subunitDprotein434Homo sapiensP49642 (AlphaFold model)
DNA primase large subunitEprotein523Homo sapiensP49643
DNA polymerase alpha catalytic subunitFprotein1527Homo sapiensP09884
DNA polymerase alpha subunit BGprotein612Homo sapiensQ14181
DNA (5'-d(p*tp*ap*gp*gp*gp*tp*tp*ap*gp*gp*gp*tp*tp*ap*gp*gp*gp*tp*tp*a)-3')HDNA60Homo sapiens
Sequence of entity 1 (A), FASTA
>8D0K_1 CST complex subunit CTC1 (chains A)
MGDYKDHDGDYKDHDIDYKDDDDKSGGSLEAAGRAQVPSSEQAWLEDAQVFIQKTLCPAV
KEPNVQLTPLVIDCVKTVWLSQGRNQGSTLPLSYSFVSVQDLKTHQRLPCCSHLSWSSSA
YQAWAQEAGPNGNPLPREQLLLLGTLTDLSADLEQECRNGSLYVRDNTGVLSCELIDLDL
SWLGHLFLFPRWSYLPPARWNSSGEGHLELWDAPVPVFPLTISPGPVTPIPVLYPESASC
LLRLRNKLRGVQRNLAGSLVRLSALVKSKQKAYFILSLGRSHPAVTHVSIIVQVPAQLVW
HRALRPGTAYVLTELRVSKIRGQRQHVWMTSQSSRLLLLKPECVQELELELEGPLLEADP
KPLPMPSNSEDKKDPESLVRYSRLLSYSGAVTGVLNEPAGLYELDGQLGLCLAYQQFRGL
RRVMRPGVCLQLQDVHLLQSVGGGTRRPVLAPCLRGAVLLQSFSRQKPGAHSSRQAYGAS
LYEQLVWERQLGLPLYLWATKALEELACKLCPHVLRHHQFLQHSSPGSPSLGLQLLAPTL
DLLAPPGSPVRNAHNEILEEPHHCPLQKYTRLQTPSSFPTLATLKEEGQRKAWASFDPKA
LLPLPEASYLPSCQLNRRLAWSWLCLLPSAFCPAQVLLGVLVASSHKGCLQLRDQSGSLP
CLLLAKHSQPLSDPRLIGCLVRAERFQLIVERDVRSSFPSWKELSMPGFIQKQQARVYVQ
FFLADALILPVPRPCLHSATPSTPQTDPTGPEGPHLGQSRLFLLCHKEALMKRNFCVPPG
ASPEVPKPALSFYVLGSWLGGTQRKEGTGWGLPEPQGNDDNDQKVHLIFFGSSVRWFEFL
HPGQVYRLVAPGPATPMLFEKDGSSCISRRPLELAGCASCLTVQDNWTLELESSQDIQDV
LDANKSLPESSLTDLLSDNFTDSLVSFSAEILSRTLCEPLVASLWMKLGNTGAMRRCVKL
TVALETAECEFPPHLDVYIEDPHLPPSLGLLPGARVHFSQLEKRVSRSHNVYCCFRSSTY
VQVLSFPPETTISVPLPHIYLAELLQGGQSPFQATASCHIVSVFSLQLFWVCAYCTSICR
QGKCTRLGSTCPTQTAISQAIIRLLVEDGTAEAVVTCRNHHVAAALGLCPREWASLLDFV
QVPGRVVLQFAGPGAQLESSARVDEPMTMFLWTLCTSPSVLRPIVLSFELERKPSKIVPL
EPPRLQRFQCGELPFLTHVNPRLRLSCLSIRESEYSSSLGILASSC
Sequence of entity 2 (B), FASTA
>8D0K_2 CST complex subunit STN1 (chains B)
MHHHHHHQPGSSRCEEETPSLLWGLDPVFLAFAKLYIRDILDMKESRQVPGVFLYNGHPI
KQVDVLGTVIGVRERDAFYSYGVDDSTGVINCICWKKLNTESVSAAPSAARELSLTSQLK
KLQETIEQKTKIEIGDTIRVRGSIRTYREEREIHATTYYKVDDPVWNIQIARMLELPTIY
RKVYDQPFHSSALEKEEALSNPGALDLPSLTSLLSEKAKEFLMENRVQSFYQQELEMVES
LLSLANQPVIHSASSDQVNFKKDTTSKAIHSIFKNAIQLLQEKGLVFQKDDGFDNLYYVT
REDKDLHRKIHRIIQQDCQKPNHMEKGCHFLHILACARLSIRPGLSEAVLQQVLELLEDQ
SDIVSTMEHYYTAF
Sequence of entity 3 (C), FASTA
>8D0K_3 CST complex subunit TEN1 (chains C)
MSYYHHHHHHDYDIPTTENLYFQGAMGSGIQLPKPGTYYLPWEVSAGQVPDGSTLRTFGR
LCLYDMIQSRVTLMAQHGSDQHQVLVCTKLVEPFHAQVGSLYIVLGELQHQQDRGSVVKA
RVLTCVEGMNLPLLEQAIREQRLYKQERGGSQ
Sequence of entity 4 (D), FASTA
>8D0K_4 DNA primase small subunit (chains D)
MGHHHHHHGSGSGSGETFDPTELPELLKLYYRRLFPYSQYYRWLNYGGVIKNYFQHREFS
FTLKDDIYIRYQSFNNQSDLEKEMQKMNPYKIDIGAVYSHRPNQHNTVKLGAFQAQEKEL
VFDIDMTDYDDVRRCCSSADICPKCWTLMTMAIRIIDRALKEDFGFKHRLWVYSGRRGVH
CWVCDESVRKLSSAVRSGIVEYLSLVKGGQDVKKKVHLSEKIHPFIRKSINIIKKYFEEY
ALVNQDILENKESWDKILALVPETIHDELQQSFQKSHNSLQRWEHLKKVASRYQNNIKND
KYGPWLEWEIMLQYCFPRLDINVSKGINHLLKSPFSVHPKTGRISVPIDLQKVDQFDPFT
VPTISFICRELDAISTNEEEKEENEAESDVKHRTRDYKKTSLAPYVKVFEHFLENLDKSR
KGELLKKSDLQKDF
Sequence of entity 5 (E), FASTA
>8D0K_5 DNA primase large subunit (chains E)
MGHHHHHHGSGSGSGEFSGRKWRKLRLAGDQRNASYPHCLQFYLQPPSENISLIEFENLA
IDRVKLLKSVENLGVSYVKGTEQYQSKLESELRKLKFSYRENLEDEYEPRRRDHISHFIL
RLAYCQSEELRRWFIQQEMDLLRFRFSILPKDKIQDFLKDSQLQFEAISDEEKTLREQEI
VASSPSLSGLKLGFESIYKIPFADALDLFRGRKVYLEDGFAYVPLKDIVAIILNEFRAKL
SKALALTARSLPAVQSDERLQPLLNHLSHSYTGQDYSTQGNVGKISLDQIDLLSTKSFPP
CMRQLHKALRENHHLRHGGRMQYGLFLKGIGLTLEQALQFWKQEFIKGKMDPDKFDKGYS
YNIRHSFGKEGKRTDYTPFSCLKIILSNPPSQGDYHGCPFRHSDPELLKQKLQSYKISPG
GISQILDLVKGTHYQVACQKYFEMIHNVDDCGFSLNHPNQFFCESQRILNGGKDIKKEPI
QPETPQPKPSVQKTKDASSALASLNSSLEMDMEGLEDYFSEDS
Sequence of entity 6 (F), FASTA
>8D0K_6 DNA polymerase alpha catalytic subunit (chains F)
MGGSAGDYKDHDGDYKDHDIDYKDDDDKGASSAWSHPQFEKGGGSGGGSGGSAWSHPQFE
KGAGSAPVHGDDSLSDSGSFVSSRARREKKSKKGRQEALERLKKAKAGEKYKYEVEDFTG
VYEEVDEEQYSKLVQARQDDDWIVDDDGIGYVEDGREIFDDDLEDDALDADEKGKDGKAR
NKDKRNVKKLAVTKPNNIKSMFIACAGKKTADKAVDLSKDGLLGDILQDLNTETPQITPP
PVMILKKKRSIGASPNPFSVHTATAVPSGKIASPVSRKEPPLTPVPLKRAEFAGDDVQVE
STEEEQESGAMEFEDGDFDEPMEVEEVDLEPMAAKAWDKESEPAEEVKQEADSGKGTVSY
LGSFLPDVSCWDIDQEGDSSFSVQEVQVDSSHLPLVKGADEEQVFHFYWLDAYEDQYNQP
GVVFLFGKVWIESAETHVSCCVMVKNIERTLYFLPREMKIDLNTGKETGTPISMKDVYEE
FDEKIATKYKIMKFKSKPVEKNYAFEIPDVPEKSEYLEVKYSAEMPQLPQDLKGETFSHV
FGTNTSSLELFLMNRKIKGPCWLEVKSPQLLNQPVSWCKVEAMALKPDLVNVIKDVSPPP
LVVMAFSMKTMQNAKNHQNEIIAMAALVHHSFALDKAAPKPPFQSHFCVVSKPKDCIFPY
AFKEVIEKKNVKVEVAATERTLLGFFLAKVHKIDPDIIVGHNIYGFELEVLLQRINVCKA
PHWSKIGRLKRSNMPKLGGRSGFGERNATCGRMICDVEISAKELIRCKSYHLSELVQQIL
KTERVVIPMENIQNMYSESSQLLYLLEHTWKDAKFILQIMCELNVLPLALQITNIAGNIM
SRTLMGGRSERNEFLLLHAFYENNYIVPDKQIFRKPQQKLGDEDEEIDGDTNKYKKGRKK
AAYAGGLVLDPKVGFYDKFILLLDFNSLYPSIIQEFNICFTTVQRVASEAQKVTEDGEQE
QIPELPDPSLEMGILPREIRKLVERRKQVKQLMKQQDLNPDLILQYDIRQKALKLTANSM
YGCLGFSYSRFYAKPLAALVTYKGREILMHTKEMVQKMNLEVIYGDTDSIMINTNSTNLE
EVFKLGNKVKSEVNKLYKLLEIDIDGVFKSLLLLKKKKYAALVVEPTSDGNYVTKQELKG
LDIVRRDWCDLAKDTGNFVIGQILSDQSRDTIVENIQKRLIEIGENVLNGSVPVSQFEIN
KALTKDPQDYPDKKSLPHVHVALWINSQGGRKVKAGDTVSYVICQDGSNLTASQRAYAPE
QLQKQDNLTIDTQYYLAQQIHPVVARICEPIDGIDAVLIATWLGLDPTQFRVHHYHKDEE
NDALLGGPAQLTDEEKYRDCERFKCPCPTCGTENIYDNVFDGSGTDMEPSLYRCSNIDCK
ASPLTFTVQLSNKLIMDIRRFIKKYYDGWLICEEPTCRNRTRHLPLQFSRTGPLCPACMK
ATLQPEYSDKSLYTQLCFYRYIFDAECALEKLTTDHEKDKLKKQFFTPKVLQDYRKLKNT
AEQFLSRSGYSEVNLSKLFAGCAVKSV
Sequence of entity 7 (G), FASTA
>8D0K_7 DNA polymerase alpha subunit B (chains G)
MGHHHHHHGSGSGSGSASAQQLAEELQIFGLDCEEALIEKLVELCVQYGQNEEGMVGELI
AFCTSTHKVGLTSEILNSFEHEFLSKRLSKARHSTCKDSGHAGARDIVSIQELIEVEEEE
EILLNSYTTPSKGSQKRAISTPETPLTKRSVSTRSPHQLLSPSSFSPSATPSQKYNSRSN
RGEVVTSFGLAQGVSWSGRGGAGNISLKVLGCPEALTGSYKSMFQKLPDIREVLTCKIEE
LGSELKEHYKIEAFTPLLAPAQEPVTLLGQIGCDSNGKLNNKSVILEGDREHSSGAQIPV
DLSELKEYSLFPGQVVIMEGINTTGRKLVATKLYEGVPLPFYQPTEEDADFEQSMVLVAC
GPYTTSDSITYDPLLDLIAVINHDRPDVCILFGPFLDAKHEQVENCLLTSPFEDIFKQCL
RTIIEGTRSSGSHLVFVPSLRDVHHEPVYPQPPFSYSDLSREDKKQVQFVSEPCSLSING
VIFGLTSTDLLFHLGAEEISSSSGTSDRFSRILKHILTQRSYYPLYPPQEDMAIDYESFY
VYAQLPVTPDVLIIPSELRYFVKDVLGCVCVNPGRLTKGQVGGTFARLYLRRPAADGAER
QSPCIAVQVVRI
Sequence of entity 8 (H), FASTA
>8D0K_8 DNA (5'-D(P*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*A)-3') (chains H)
CTAACCGCATCTAGCTTTTTGCTAGATGCGGTTAGCTTAGGGTTAGGGTTAGGGTTAGGG

Primary citation

Structures of the human CST-Pol alpha-primase complex bound to telomere templates. He, Q., Lin, X., Chavez, B.L. et al. Nature (2022) 608:826-832. DOI 10.1038/s41586-022-05040-1 · PubMed

Other PDB entries of the same protein (UniProt Q2NKJ3 (AlphaFold model), which also has an AlphaFold model), best resolution first:

Browse structure collections

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