9G27: DNA-directed RNA polymerase I subunit RPA190

Yeast RNA polymerase I elongation complex stalled by an apurinic site, pre-translocation state. Determined by electron microscopy at 2.8 Å resolution. Released 18 Jun 2025.

Method
Electron microscopy
Resolution
2.8 Å
Organism
Saccharomyces cerevisiae
Chains
15
Atoms
31,262
Mol. weight
544.31 kDa
Ligands
ZN
Released
18 Jun 2025

Explore 9G27 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9G27 contains 190 α-helices and 220 β-strands across 12 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: 82 helices, 63 β-strands

ElementResiduesLengthSheet
β-strand11-1881
α-helix21-277
β-strand3112
β-strand3813
β-strand4413
α-helix451
α-helix52-543
β-strand5714
β-strand6014
β-strand77-86102
α-helix91-988
α-helix112-12514
α-helix130-1356
α-helix137-1393
α-helix175-19925
α-helix210-22819
β-strand242-24545
β-strand251-25445
α-helix255-2573
α-helix258-2647
β-strand313-31425
α-helix317-33014
α-helix332-3387
α-helix348-3503
α-helix352-3554
β-strand356-36272
α-helix363-3642
α-helix365-3684
β-strand371-37336
β-strand376-37836
α-helix381-40828
α-helix413-43826
α-helix452-4543
α-helix458-4603
α-helix466-4705
β-strand474-47637
β-strand479-48688
β-strand494-49748
α-helix499-5046
β-strand506-51059
α-helix516-52510
β-strand533-53759
β-strand543-54539
α-helix551-5599
α-helix568-5703
β-strand576-58059
β-strand586-59058
α-helix597-5993
β-strand602-60768
β-strand614-61638
α-helix620-6245
β-strand632-63658
α-helix641-6455
α-helix646-6505
β-strand65218
α-helix654-6563
β-strand658110
β-strand665110
α-helix672-6809
β-strand686-687211
α-helix689-69911
α-helix702-7043
β-strand719-721312
β-strand725112
β-strand726-727211
α-helix728-73912
α-helix745-7473
β-strand750-752313
β-strand768-771413
β-strand776-778313
α-helix793-82331
β-strand826-827214
α-helix831-8333
β-strand835115
α-helix837-84711
α-helix848-8503
α-helix853-8619
α-helix873-88412
α-helix886-91126
β-strand916115
α-helix924-9318
α-helix937-9448
β-strand948-949216
α-helix950-9512
β-strand952117
β-strand955117
α-helix9701
α-helix976-9794
β-strand981-982216
α-helix992-101221
α-helix1017-102711
β-strand1031-1032218
β-strand1038-1039218
β-strand1045-1047318
α-helix1050-10523
β-strand1055119
α-helix1057-10593
α-helix1061-10633
α-helix1066-10716
α-helix1073-10808
α-helix1082-10843
β-strand1090120
α-helix1093-110715
α-helix1123-11264
β-strand1132120
α-helix1138-115013
α-helix1163-117614
β-strand1178119
α-helix1179-11802
α-helix1185-119814
α-helix1218-12225
α-helix1223-12275
β-strand1237-1241521
β-strand1242122
α-helix1248-125811
β-strand1261-1262223
α-helix1263-12653
β-strand1267-1272624
β-strand1273-1274225
β-strand1288-1296924
α-helix1299-13068
α-helix1310-13167
α-helix1317-13215
α-helix1322-133716
α-helix1441-145313
β-strand1457124
β-strand1469-1476824
α-helix1487-14959
β-strand1497-1499323
β-strand1507-1508221
β-strand1518-1522521
α-helix1526-15294
β-strand1536122
α-helix1538-15403
β-strand1542-1543221
α-helix1546-15538
α-helix1555-157218
α-helix1579-158911
α-helix1600-16034
α-helix1609-16157
α-helix1618-162710
β-strand1631-163221
α-helix1637-16437
α-helix1650-16523
β-strand1654-1660726
Chain B: 59 helices, 80 β-strands
ElementResiduesLengthSheet
β-strand14127
α-helix18-269
α-helix37-404
α-helix43-519
α-helix56-583
α-helix60-689
β-strand71128
β-strand96-1051028
α-helix106-1072
β-strand108-109229
β-strand119-120229
α-helix123-1297
β-strand134-1451228
β-strand150-1621328
α-helix177-1826
β-strand194-196330
β-strand199-203530
β-strand205-209531
α-helix2101
β-strand211132
β-strand214-216332
α-helix220-2245
β-strand229133
β-strand234-239632
β-strand245-252832
β-strand253133
β-strand258-263632
β-strand268-272532
α-helix273-2808
α-helix285-2928
α-helix300-31617
α-helix323-33311
α-helix346-35611
α-helix360-3623
α-helix367-38519
α-helix397-3993
β-strand400-403431
α-helix407-43428
α-helix443-4508
α-helix457-46711
β-strand485-487330
α-helix493-4997
β-strand502-504331
α-helix522-5243
β-strand528134
β-strand542-544331
β-strand545134
β-strand550-551235
α-helix561-5688
α-helix5701
β-strand571-572236
β-strand584-588536
β-strand591-596636
α-helix598-61316
β-strand625-629536
α-helix637-6382
β-strand639-643536
β-strand649-650235
β-strand651-655537
α-helix657-6593
β-strand660-664537
α-helix666-6694
β-strand674-675237
α-helix678-6803
β-strand688-689237
α-helix693-6964
α-helix699-7024
α-helix707-7093
α-helix712-72110
β-strand725138
α-helix733-7353
β-strand740-744539
β-strand748140
β-strand752-753241
α-helix756-7594
α-helix762-7643
β-strand769-772442
β-strand773-775343
β-strand776-777214
β-strand787-790443
α-helix791-7944
β-strand801-8101039
α-helix819-8213
β-strand823-825344
α-helix834-8374
β-strand840145
β-strand846145
α-helix8471
β-strand851-852239
β-strand860-863444
β-strand868-871444
β-strand880-888939
β-strand900-9091039
β-strand916-919442
β-strand925-926242
β-strand927-931543
β-strand938-939246
α-helix943-9453
β-strand947-949343
α-helix951-9533
α-helix954-9574
α-helix960-97516
β-strand978127
β-strand979-980241
α-helix992-100312
β-strand1010-1011243
β-strand1013-1014246
β-strand1021146
α-helix10221
β-strand1026-1027243
β-strand1030-1035642
β-strand1036138
α-helix1040-10423
β-strand1045-104738
α-helix10511
β-strand1052147
α-helix10531
α-helix10581
β-strand1059147
α-helix10601
α-helix1067-10682
β-strand1069-107137
α-helix1073-10819
α-helix1085-10895
α-helix1090-10945
β-strand1098-1100348
β-strand1103-1104249
β-strand1113-1115350
α-helix11161
β-strand1117151
α-helix11181
β-strand1126-1134950
β-strand1159150
β-strand1160151
β-strand1167-1170450
β-strand1173-1174249
β-strand1177-1179348
α-helix1180-119112
β-strand1194-120071
Chain C: 15 helices, 21 β-strands
ElementResiduesLengthSheet
α-helix33-397
β-strand41-47752
β-strand51-57752
α-helix61-7313
β-strand77-85953
β-strand87-88254
α-helix94-1029
β-strand106155
α-helix110-1123
α-helix122-1254
β-strand132-135453
β-strand136-139454
β-strand141-142256
α-helix146-1472
α-helix153-1564
β-strand157-158256
β-strand161-163357
α-helix164-1663
β-strand168-170353
α-helix175-1784
β-strand186155
β-strand192-195457
β-strand201-204454
β-strand206-211653
α-helix217-2193
β-strand222-226552
β-strand229-235752
α-helix242-2498
β-strand256-257258
β-strand266-267258
α-helix270-2723
α-helix279-2813
α-helix283-2864
β-strand289-2991152
β-strand301-304452
α-helix310-33021
Chain D: 0 helices, 1 β-strand
ElementResiduesLengthSheet
β-strand23-24226
Chain E: 9 helices, 14 β-strands
ElementResiduesLengthSheet
α-helix5-2622
β-strand28159
α-helix32-354
α-helix39-468
β-strand47160
β-strand53160
β-strand61-62261
β-strand64159
α-helix66-716
β-strand78-82561
β-strand87-88262
α-helix90-10314
β-strand107-112661
β-strand115-116262
α-helix118-1214
α-helix124-1263
β-strand131-136661
β-strand152-155463
α-helix158-16811
β-strand177-178263
α-helix183-1886
β-strand195-202863
β-strand206-214963
Chain F: 6 helices, 5 β-strands
ElementResiduesLengthSheet
α-helix55-7218
β-strand73126
β-strand84-85264
α-helix861
α-helix87-10216
α-helix110-1112
α-helix117-12711
β-strand132-137626
α-helix1381
β-strand143-147526
β-strand152-153264
Chain G: 5 helices, 6 β-strands
ElementResiduesLengthSheet
β-strand39-491126
α-helix51-533
α-helix57-615
α-helix62-665
α-helix67-693
β-strand73165
β-strand80165
β-strand81-89926
β-strand103-107526
α-helix1081
β-strand114-1241126
Chain H: 2 helices, 9 β-strands
ElementResiduesLengthSheet
β-strand4-161312
β-strand23-30812
β-strand37-43712
β-strand55-60612
α-helix89-924
β-strand95-98412
β-strand100-108912
β-strand111-118812
β-strand121-127712
α-helix129-1324
β-strand141-144412

4 more chain groups are not listed. Open the entry in the viewer and use the sequence panel to see them.

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
DNA-directed RNA polymerase I subunit RPA190Aprotein1664Saccharomyces cerevisiaeP10964 (AlphaFold model)
DNA-directed RNA polymerase I subunit RPA135Bprotein1203Saccharomyces cerevisiaeP22138 (AlphaFold model)
DNA-directed RNA polymerases I and III subunit RPAC1Cprotein335Saccharomyces cerevisiaeP07703 (AlphaFold model)
DNA-directed RNA polymerase I subunit RPA14Dprotein137Saccharomyces cerevisiaeP50106 (AlphaFold model)
DNA-directed RNA polymerases I, II, and III subunit RPABC1Eprotein215Saccharomyces cerevisiaeP20434
DNA-directed RNA polymerases I, II, and III subunit RPABC2Fprotein155Saccharomyces cerevisiaeP20435
DNA-directed RNA polymerase I subunit RPA43Gprotein326Saccharomyces cerevisiaeP46669
DNA-directed RNA polymerases I, II, and III subunit RPABC3Hprotein146Saccharomyces cerevisiaeP20436
DNA-directed RNA polymerase I subunit RPA12Iprotein125Saccharomyces cerevisiaeP32529
DNA-directed RNA polymerases I, II, and III subunit RPABC5Jprotein70Saccharomyces cerevisiaeP22139
DNA-directed RNA polymerases I and III subunit RPAC2Kprotein142Saccharomyces cerevisiaeP28000
DNA-directed RNA polymerases I, II, and III subunit RPABC4Lprotein70Saccharomyces cerevisiaeP40422

3 more molecules are not listed.

Sequence of entity 1 (A), FASTA
>9G27_1 DNA-directed RNA polymerase I subunit RPA190 (chains A)
MDISKPVGSEITSVDFGILTAKEIRNLSAKQITNPTVLDNLGHPVSGGLYDLALGAFLRN
LCSTCGLDEKFCPGHQGHIELPVPCYNPLFFNQLYIYLRASCLFCHHFRLKSVEVHRYAC
KLRLLQYGLIDESYKLDEITLGSLNSSMYTDDEAIEDNEDEMDGEGSKQSKDISSTLLNE
LKSKRSEYVDMAIAKALSDGRTTERGSFTATVNDERKKLVHEFHKKLLSRGKCDNCGMFS
PKFRKDGFTKIFETALNEKQITNNRVKGFIRQDMIKKQKQAKKLDGSNEASANDEESFDV
GRNPTTRPKTGSTYILSTEVKNILDTVFRKEQCVLQYVFHSRPNLSRKLVKADSFFMDVL
VVPPTRFRLPSKLGEEVHENSQNQLLSKVLTTSLLIRDLNDDLSKLQKDKVSLEDRRVIF
SRLMNAFVTIQNDVNAFIDSTKAQGRTSGKVPIPGVKQALEKKEGLFRKHMMGKRVNYAA
RSVISPDPNIETNEIGVPPVFAVKLTYPEPVTAYNIAELRQAVINGPDKWPGATQIQNED
GSLVSLIGMSVEQRKALANQLLTPSSNVSTHTLNKKVYRHIKNRDVVLMNRQPTLHKASM
MGHKVRVLPNEKTLRLHYANTGAYNADFDGDEMNMHFPQNENARAEALNLANTDSQYLTP
TSGSPVRGLIQDHISAGVWLTSKDSFFTREQYQQYIYGCIRPEDGHTTRSKIVTLPPTIF
KPYPLWTGKQIITTVLLNVTPPDMPGINLISKNKIKNEYWGKGSLENEVLFKDGALLCGI
LDKSQYGASKYGIVHSLHEVYGPEVAAKVLSVLGRLFTNYITATAFTCGMDDLRLTAEGN
KWRTDILKTSVDTGREAAAEVTNLDKDTPADDPELLKRLQEILRDNNKSGILDAVTSSKV
NAITSQVVSKCVPDGTMKKFPCNSMQAMALSGAKGSNVNVSQIMCLLGQQALEGRRVPVM
VSGKTLPSFKPYETDAMAGGYVKGRFYSGIKPQEYYFHCMAGREGLIDTAVKTSRSGYLQ
RCLTKQLEGVHVSYDNSIRDADGTLVQFMYGGDAIDITKESHMTQFEFCLDNYYALLKKY
NPSALIEHLDVESALKYSKKTLKYRKKHSKEPHYKQSVKYDPVLAKYNPAKYLGSVSENF
QDKLESFLDKNSKLFKSSDGVNEKKFRALMQLKYMRSLINPGEAVGIIASQSVGEPSTQM
TLNTFHFAGHGAANVTLGIPRLREIVMTASAAIKTPQMTLPIWNDVSDEQADTFCKSISK
VLLSEVIDKVIVTETTGTSNTAGGNAARSYVIHMRFFDNNEYSEEYDVSKEELQNVISNQ
FIHLLEAAIVKEIKKQKRTTGPDIGVAVPRLQTDVANSSSNSKRLEEDNDEEQSHKKTKQ
AVSYDEPDEDEIETMREAEKSSDEEGIDSDKESDSDSEDEDVDMNEQINKSIVEANNNMN
KVQRDRQSAIISHHRFITKYNFDDESGKWCEFKLELAADTEKLLMVNIVEEICRKSIIRQ
IPHIDRCVHPEPENGKRVLVTEGVNFQAMWDQEAFIDVDGITSNDVAAVLKTYGVEAARN
TIVNEINNVFSRYAISVSFRHLDLIADMMTRQGTYLAFNRQGMETSTSSFMKMSYETTCQ
FLTKAVLDNEREQLDSPSARIVVGKLNNVGTGSFDVLAKVPNAA
Sequence of entity 2 (B), FASTA
>9G27_2 DNA-directed RNA polymerase I subunit RPA135 (chains B)
MSKVIKPPGQARTADFRTLERESRFINPPKDKSAFPLLQEAVQPHIGSFNALTEGPDGGL
LNLGVKDIGEKVIFDGKPLNSEDEISNSGYLGNKLSVSVEQVSIAKPMSNDGVSSAVERK
VYPSESRQRLTSYRGKLLLKLKWSVNNGEENLFEVRDCGGLPVMLQSNRCHLNKMSPYEL
VQHKEESDEIGGYFIVNGIEKLIRMLIVQRRNHPMAIIRPSFANRGASYSHYGIQIRSVR
PDQTSQTNVLHYLNDGQVTFRFSWRKNEYLVPVVMILKALCHTSDREIFDGIIGNDVKDS
FLTDRLELLLRGFKKRYPHLQNRTQVLQYLGDKFRVVFQASPDQSDLEVGQEVLDRIVLV
HLGKDGSQDKFRMLLFMIRKLYSLVAGECSPDNPDATQHQEVLLGGFLYGMILKEKIDEY
LQNIIAQVRMDINRGMAINFKDKRYMSRVLMRVNENIGSKMQYFLSTGNLVSQSGLDLQQ
VSGYTVVAEKINFYRFISHFRMVHRGSFFAQLKTTTVRKLLPESWGFLCPVHTPDGSPCG
LLNHFAHKCRISTQQSDVSRIPSILYSLGVAPASHTFAAGPSLCCVQIDGKIIGWVSHEQ
GKIIADTLRYWKVEGKTPGLPIDLEIGYVPPSTRGQYPGLYLFGGHSRMLRPVRYLPLDK
EDIVGPFEQVYMNIAVTPQEIQNNVHTHVEFTPTNILSILANLTPFSDFNQSPRNMYQCQ
MGKQTMGTPGVALCHRSDNKLYRLQTGQTPIVKANLYDDYGMDNFPNGFNAVVAVISYTG
YDMDDAMIINKSADERGFGYGTMYKTEKVDLALNRNRGDPITQHFGFGNDEWPKEWLEKL
DEDGLPYIGTYVEEGDPICAYFDDTLNKTKIKTYHSSEPAYIEEVNLIGDESNKFQELQT
VSIKYRIRRTPQIGDKFSSRHGQKGVCSRKWPTIDMPFSETGIQPDIIINPHAFPSRMTI
GMFVESLAGKAGALHGIAQDSTPWIFNEDDTPADYFGEQLAKAGYNYHGNEPMYSGATGE
ELRADIYVGVVYYQRLRHMVNDKFQVRSTGPVNSLTMQPVKGRKRHGGIRVGEMERDALI
GHGTSFLLQDRLLNSSDYTQASVCRECGSILTTQQSVPRIGSISTVCCRRCSMRFEDAKK
LLTKSEDGEKIFIDDSQIWEDGQGNKFVGGNETTTVAIPFVLKYLDSELSAMGIRLRYNV
EPK
Sequence of entity 3 (C), FASTA
>9G27_3 DNA-directed RNA polymerases I and III subunit RPAC1 (chains C)
MSNIVGIEYNRVTNTTSTDFPGFSKDAENEWNVEKFKKDFEVNISSLDAREANFDLINID
TSIANAFRRIMISEVPSVAAEYVYFFNNTSVIQDEVLAHRIGLVPLKVDPDMLTWVDSNL
PDDEKFTDENTIVLSLNVKCTRNPDAPKGSTDPKELYNNAHVYARDLKFEPQGRQSTTFA
DCPVVPADPDILLAKLRPGQEISLKAHCILGIGGDHAKFSPVSTASYRLLPQINILQPIK
GESARRFQKCFPPGVIGIDEGSDEAYVKDARKDTVSREVLRYEEFADKVKLGRVRNHFIF
NVESAGAMTPEEIFFKSVRILKNKAEYLKNCPITQ
Sequence of entity 4 (D), FASTA
>9G27_4 DNA-directed RNA polymerase I subunit RPA14 (chains D)
MMKGSRRTGNNTATTLNTPVVIHATQLPQHVSTDEVLQFLESFIDEKENIIDSTTMNTIS
GNAADADAAAVANTSLNIDTNLSSSISQLKRIQRDFKGLPPAQDFSAAPIQVSTTEKKET
SIGVSATGGKKTTFADE
Sequence of entity 5 (E), FASTA
>9G27_5 DNA-directed RNA polymerases I, II, and III subunit RPABC1 (chains E)
MDQENERNISRLWRAFRTVKEMVKDRGYFITQEEVELPLEDFKAKYCDSMGRPQRKMMSF
QANPTEESISKFPDMGSLWVEFCDEPSVGVKTMKTFVIHIQEKNFQTGIFVYQNNITPSA
MKLVPSIPPATIETFNEAALVVNITHHELVPKHIRLSSDEKRELLKRYRLKESQLPRIQR
ADPVALYLGLKRGEVVKIIRKSETSGRYASYRICM
Sequence of entity 6 (F), FASTA
>9G27_6 DNA-directed RNA polymerases I, II, and III subunit RPABC2 (chains F)
MSDYEEAFNDGNENFEDFDVEHFSDEETYEEKPQFKDGETTDANGKTIVTGGNGPEDFQQ
HEQIRRKTLKEKAIPKDQRATTPYMTKYERARILGTRALQISMNAPVFVDLEGETDPLRI
AMKELAEKKIPLVIRRYLPDGSFEDWSVEELIVDL
Sequence of entity 7 (G), FASTA
>9G27_7 DNA-directed RNA polymerase I subunit RPA43 (chains G)
MSQVKRANENRETARFIKKHKKQVTNPIDEKNGTSNCIVRVPIALYVSLAPMYLENPLQG
VMKQHLNPLVMKYNNKVGGVVLGYEGLKILDADPLSKEDTSEKLIKITPDTPFGFTWCHV
NLYVWQPQVGDVLEGYIFIQSASHIGLLIHDAFNASIKKNNIPVDWTFVHNDVEEDADVI
NTDENNGNNNNEDNKDSNGGSNSLGKFSFGNRSLGHWVDSNGEPIDGKLRFTVRNVHTTG
RVVSVDGTLISDADEEGNGYNSSRSQAESLPIVSNKKIVFDDEVSIENKESHKELDLPEV
KEDNGSEIVYEENTSESNDGESSDSD
Sequence of entity 8 (H), FASTA
>9G27_8 DNA-directed RNA polymerases I, II, and III subunit RPABC3 (chains H)
MSNTLFDDIFQVSEVDPGRYNKVCRIEAASTTQDQCKLTLDINVELFPVAAQDSLTVTIA
SSLNLEDTPANDSSATRSWRPPQAGDRSLADDYDYVMYGTAYKFEEVSKDLIAVYYSFGG
LLMRLEGNYRNLNNLKQENAYLLIRR
Sequence of entity 9 (I), FASTA
>9G27_9 DNA-directed RNA polymerase I subunit RPA12 (chains I)
MSVVGSLIFCLDCGDLLENPNAVLGSNVECSQCKAIYPKSQFSNLKVVTTTADDAFPSSL
RAKKSVVKTSLKKNELKDGATIKEKCPQCGNEEMNYHTLQLRSADEGATVFYTCTSCGYK
FRTNN
Sequence of entity 10 (J), FASTA
>9G27_10 DNA-directed RNA polymerases I, II, and III subunit RPABC5 (chains J)
MIVPVRCFSCGKVVGDKWESYLNLLQEDELDEGTALSRLGLKRYCCRRMILTHVDLIEKF
LRYNPLEKRD
Sequence of entity 11 (K), FASTA
>9G27_11 DNA-directed RNA polymerases I and III subunit RPAC2 (chains K)
MTEDIEQKKTATEVTPQEPKHIQEEEEQDVDMTGDEEQEEEPDREKIKLLTQATSEDGTS
ASFQIVEEDHTLGNALRYVIMKNPDVEFCGYSIPHPSENLLNIRIQTYGETTAVDALQKG
LKDLMDLCDVVESKFTEKIKSM
Sequence of entity 12 (L), FASTA
>9G27_12 DNA-directed RNA polymerases I, II, and III subunit RPABC4 (chains L)
MSREGFQIPTNLDAAAAGTSQARTATLKYICAECSSKLSLSRTDAVRCKDCGHRILLKAR
TKRLVQFEAR

Ligands and cofactors

IDNameFormulaCopies
ZNZinc ionZn6

Primary citation

Cryo-EM uncovers a sequential mechanism for RNA polymerase I pausing and stalling at abasic DNA lesions. Santos-Aledo, A., Plaza-Pegueroles, A., Sanz-Murillo, M. et al. Nat Commun (2025) 16:5254-5254. DOI 10.1038/s41467-025-60536-4 · PubMed

Other PDB entries of the same protein (UniProt P10964 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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