9UJS: DNA-directed RNA polymerase subunit

RNA polymerase II elongation complex stalled at SHL(-4) of the H3-H4 octasome. Determined by electron microscopy at 3.62 Å resolution. Released 15 Apr 2026.

Method
Electron microscopy
Resolution
3.62 Å
Organisms
Komagataella phaffii GS115, synthetic construct, Homo sapiens
Chains
23
Atoms
42,216
Mol. weight
745.69 kDa
Released
15 Apr 2026

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

Secondary structure: helices and β-sheets

9UJS contains 210 α-helices and 238 β-strands across 20 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: 3 helices, 1 β-strand

ElementResiduesLengthSheet
α-helix64-7815
α-helix86-11328
β-strand118-119278
α-helix122-1309
Chain A: 79 helices, 67 β-strands
ElementResiduesLengthSheet
α-helix101
β-strand1111
β-strand16-1832
β-strand2113
α-helix22-232
α-helix24-307
β-strand3414
α-helix48-492
α-helix56-583
β-strand82-91104
α-helix93-953
α-helix96-10510
β-strand10615
β-strand11315
α-helix120-1256
α-helix131-14313
β-strand14716
α-helix1701
β-strand17116
α-helix172-1732
β-strand174-17857
β-strand181-18667
β-strand199-20247
α-helix205-2128
α-helix217-2226
β-strand22618
β-strand23018
α-helix232-2354
β-strand236-24274
α-helix245-2473
β-strand251-25229
β-strand258-25929
α-helix260-2612
α-helix262-28120
α-helix289-30517
α-helix313-3153
β-strand316110
β-strand322110
α-helix326-3305
α-helix336-3405
β-strand344-345211
β-strand349-353512
β-strand354-356313
β-strand364-368514
α-helix369-3746
β-strand376-380515
α-helix383-3853
α-helix386-39510
β-strand403-407515
α-helix422-4243
β-strand432-436515
β-strand443116
β-strand446112
α-helix453-4553
β-strand459116
β-strand460-464514
β-strand469-471313
α-helix473-4753
α-helix476-4794
β-strand487-489312
α-helix496-5016
α-helix502-5065
α-helix508-5114
β-strand513-514217
β-strand519-520217
α-helix526-53510
β-strand541-543318
α-helix544-5529
α-helix561-5644
β-strand566-568318
β-strand572-574318
α-helix575-5828
α-helix5841
β-strand588-591419
β-strand606-609419
β-strand613-615319
α-helix620-6234
α-helix630-66132
α-helix667-6704
α-helix674-69926
α-helix703-7064
α-helix711-73727
α-helix743-7508
α-helix756-7594
α-helix760-7645
β-strand767-768220
β-strand771121
β-strand774121
α-helix795-7973
β-strand800-801220
α-helix811-84535
β-strand850122
β-strand858122
β-strand864122
α-helix869-8713
β-strand874123
β-strand879-883524
α-helix891-8988
α-helix909-9102
α-helix911-9133
β-strand914125
α-helix917-9193
α-helix927-94317
α-helix944-9485
β-strand955-959524
α-helix962-97312
α-helix979-9802
β-strand981125
α-helix985-99511
α-helix1007-101610
α-helix1018-102710
α-helix1030-10312
α-helix1032-10376
α-helix1041-105616
β-strand1059123
α-helix1066-107914
α-helix1100-11078
β-strand1117-1120426
β-strand1122127
α-helix1124-11274
α-helix1131-114010
β-strand1144128
β-strand1149-1156829
α-helix1169-11768
β-strand1193-1199729
α-helix1201-12077
α-helix1211-122111
β-strand1226-1228329
β-strand1238-1244729
α-helix1261-127313
β-strand1275128
β-strand1284-12951226
β-strand1301-13121226
α-helix1316-13194
β-strand1325127
β-strand1331-1332226
α-helix1335-135925
α-helix1360-13623
α-helix1368-137811
α-helix1399-14035
α-helix1408-141710
β-strand1421-142222
α-helix1427-14326
α-helix1440-14423
β-strand1445-1448430
α-helix1450-14556
Chain b: 4 helices, 1 β-strand
ElementResiduesLengthSheet
α-helix25-273
α-helix31-4111
β-strand45-46278
α-helix50-7526
α-helix83-9311
Chain B: 50 helices, 80 β-strands
ElementResiduesLengthSheet
α-helix14-2714
α-helix32-409
α-helix41-455
α-helix46-505
β-strand55-58431
β-strand71132
β-strand74-841131
β-strand88-90333
α-helix911
β-strand96-98333
α-helix101-1066
β-strand112-1241331
β-strand127132
β-strand155-162831
α-helix177-1826
β-strand194-196334
β-strand199-203534
β-strand205-209535
α-helix2101
β-strand214-218536
β-strand225-2341036
β-strand241-2501036
β-strand261-264436
β-strand272-273236
α-helix274-2807
α-helix286-2938
α-helix300-31314
α-helix319-32911
α-helix332-3332
α-helix338-35013
α-helix364-38219
α-helix387-3904
α-helix394-3963
β-strand397-400435
α-helix402-43029
α-helix444-45512
α-helix462-4643
β-strand473-475334
α-helix481-4877
β-strand490137
β-strand491-492235
α-helix503-5053
α-helix509-5113
β-strand515138
β-strand531137
β-strand532138
β-strand537-538239
α-helix545-5539
α-helix5561
β-strand557-558240
α-helix559-5613
β-strand571-575540
β-strand578-583640
α-helix586-59813
β-strand607-610440
β-strand616-620540
β-strand626-632739
β-strand633141
β-strand645141
α-helix649-6579
α-helix678-6847
β-strand687-691539
α-helix694-6974
β-strand700-701239
α-helix704-7074
β-strand740-741239
α-helix745-7484
α-helix764-77310
α-helix774-7763
β-strand777142
β-strand779143
β-strand793-796443
β-strand800144
β-strand804-805245
β-strand821-825546
β-strand839-842446
α-helix843-8475
β-strand853-8621043
β-strand865-867347
β-strand870-871247
β-strand873-874248
β-strand882-883248
β-strand898149
α-helix899-9002
β-strand904-905243
β-strand910-912349
β-strand914-917448
α-helix918-9192
β-strand934-936348
β-strand939-940249
α-helix941-9422
β-strand947-9561043
β-strand962-9721143
β-strand979-982446
β-strand987-994846
β-strand1001150
β-strand1010-1012346
α-helix1016-10205
α-helix1023-103816
α-helix10411
β-strand1042-1043245
α-helix1052-106110
β-strand1069-1070251
β-strand1073150
α-helix10791
β-strand1080150
α-helix10811
β-strand1085-1086251
β-strand1088-1094746
β-strand1095142
α-helix1099-11013
β-strand1104-1106312
β-strand1111152
α-helix11171
β-strand1118152
α-helix11191
β-strand1129-1130211
α-helix1132-114110
α-helix1144-11529
β-strand1157-1158253
β-strand1161-116331
β-strand1172-1174354
β-strand1179-1181354
β-strand1182155
β-strand1187155
β-strand1191-119331
β-strand1196-1197253
α-helix1198-120912
β-strand121213
β-strand1215-121732
Chains c and e: 3 helices, 1 β-strand
ElementResiduesLengthSheet
α-helix64-7815
α-helix86-11328
β-strand119179
α-helix121-13111
Chain C: 11 helices, 12 β-strands
ElementResiduesLengthSheet
β-strand6-12756
β-strand17-22656
α-helix26-3813
β-strand42-531257
α-helix59-679
β-strand71158
α-helix80-812
β-strand96-103857
β-strand111-114459
α-helix115-1173
β-strand119-120257
α-helix1311
β-strand132158
α-helix1331
β-strand143-147559
β-strand152-1621157
α-helix168-1703
β-strand176-180556
α-helix197-2004
α-helix202-2043
α-helix211-2144
β-strand227-232656
α-helix240-26526
Chain d: 4 helices, 1 β-strand
ElementResiduesLengthSheet
α-helix26-283
α-helix31-4010
β-strand46179
α-helix50-7627
α-helix83-9412
Chain D: 9 helices, 5 β-strands
ElementResiduesLengthSheet
β-strand4-6330
β-strand24160
β-strand29160
α-helix32-343
β-strand37-39361
β-strand45-47361
α-helix53-7119
α-helix86-905
α-helix96-11015
α-helix118-12811
α-helix139-1479
α-helix153-1597
α-helix161-1633
α-helix171-18111

11 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 subunitAprotein1743Komagataella phaffii GS115C4R4Y0
DNA-directed RNA polymerase subunit betaBprotein1227Komagataella phaffii GS115C4QZQ7 (AlphaFold model)
RNA polymerase II third largest subunit B44, part of central coreCprotein304Komagataella phaffii GS115C4R7L2 (AlphaFold model)
RNA polymerase II subunit B32Dprotein186Komagataella phaffii GS115C4R2U9 (AlphaFold model)
RNA polymerase subunit ABC27, common to RNA polymerases I, II, and IIIEprotein214Komagataella phaffii GS115C4R3P8
RNA polymerase subunit ABC23, common to RNA polymerases I, II, and IIIFprotein155Komagataella phaffii GS115C4R1V1
RNA polymerase II subunitGprotein171Komagataella phaffii GS115C4R9A1
DNA-directed RNA polymerases I, II, and III subunit RPABC3Hprotein145Komagataella phaffii GS115C4R273
DNA-directed RNA polymerase subunitIprotein115Komagataella phaffii GS115F2QPE6
RNA polymerase subunit ABC10-beta, common to RNA polymerases I, II, and IIIJprotein72Komagataella phaffii GS115C4R009
RNA polymerase II subunit B12.5Kprotein118Komagataella phaffii GS115C4R3Z5
RNA polymerase subunit ABC10-alphaLprotein72Komagataella phaffii GS115F2QMI1

5 more molecules are not listed.

Sequence of entity 1 (A), FASTA
>9UJS_1 DNA-directed RNA polymerase subunit (chains A)
MSQFPYSSAPLRSVKEVQFGLLSPEEIRAISVVKIEYPEIMDESRQRPREGGLNDPKLGS
IDRNFKCQTCGEGMAECPGHFGHMELAKPVFHIGFIPKIKKVCECICMNCGKLLLDETNP
TMAQAIRIRDPKKRFNAVWQLCKTKMVCEADAPVDEYSEQKVVSRGGCGNTQPVVRKDGM
KLWGTWKKSGFSDRDAQPERKLLTPGEILNVFKHISPEDCFRLGFNEDYARPEWMIITVL
PVPPPQVRPSIAMDETTQGQDDLTHKLSDILKANINVQKLEMDGSPQHIINEVEQLLQFH
VATYMDNDIAGQPQALQKSGRPVKAIRARLKGKEGRLRGNLMGKRVDFSARTVISGDPNL
ELDQVGVPISIAKTLSYPETVTQYNIHRLTEYVRNGPNEHPGAKYVIRDNGDRIDLRYHK
RAGDIVLQYGWKVERHLMDDDPVLFNRQPSLHKMSMMAHRVKVMPYSTFRLNLSVTSPYN
ADFDGDEMNLHVPQSEETRAELSQLCAVPLQIVSPQSNKPVMGIVQDTLCGVRKMTLRDT
FIEYEQVMNMLFWVPSWDGVVPQPAILKPKPLWTGKQLLSIAIPSGIHLQRTDGGNSLLS
PKDNGMLIVDGKVMFGVVDKKTVGSGGGGLIHTVMREKGPKICAELFGNIQKVVNYWLLH
NGFSIGIGDAIADASTMKEITHAISSAKEQVQEIIYKAQHNELELKPGMTLRESFEGEVS
RTLNDARDSAGRSAEMNLKDLNNVKQMVSAGSKGSFINIAQMSACVGQQMVEGKRIAFGF
ADRSLPHFTKDDFSPESKGFVENSYLRGLTPQEFFFHAMAGREGLIDTAVKTAETGYIQR
RLVKALEDIMVHYDGTTRNSLGDIIQFLYGEDGLDGTQVERQTIDTIPGSDKAFHKRYYV
DLMDEKNSIKPDVIEYAADILGDVELQKELNSEYEQLVSDRKFLREIVFVNGDHNWPLPV
NLRRIIQNAQQIFHLDRAKASDLTIPEIIHGVRDLCKKLFVLRGENELIKEAQQNATSLF
QCLVRARLATRRILEEFRLNRDAFEWVLGTIEAQFQRSLVHPGEMVGVIAAQSIGEPATQ
MTLNTFHYAGVSSKNVTLGVPRLKEILNVAKNIKTPALTVYLDREIALDIEKAKVIQSSI
EYTTLKNVTSATEIYYDPDPTSTVIEEDFDTVEAYFSIPDEKVEETIDKQSPWLLRLELD
RARMLDKQLTMNQVADKISEVFSDDLFVMWSEDNADKLIIRCRVIRDPKAMDEELEAEED
QMLKRIEAHMLDLIALRGIPGISKVYMVKHKVSVPDESGEYKNEELWALETDGINLAEVM
AVPGVDSSRTYSNSFVEILSVLGIEATRSSLYKEILNVIAFDGSYVNYRHMALLVDVMTS
RGYLMAITRHGINRADTGALMRCSFEETVEILFEAGAAAELDDCRGVSENVMLGQLAPMG
TGAFDVMIDEKLLTSLPADYAPTMPLFKGKATQGSATPYDNNAQYDDEFNHDDVADVMFS
PMAETGSGDDRSGGLTEYAGIQSPYQPTSPGLSATSPGFAPTSPGFAPTSPRYSPTSPGY
SPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTS
PSYSPTSPQYSPTSPQYSPTSPQYSPTSPQYSPTSPQYSPTSPQYSPTSPQYSPTSPQYS
PTSPQYSPTSPQYSPTSPQYSPTSPQYSPTSPQYSPTSPQYSPASPQYSPSRHSPNGESK
EGE
Sequence of entity 2 (B), FASTA
>9UJS_2 DNA-directed RNA polymerase subunit beta (chains B)
MSYDPYSIDDTITTEDCWTVISAFFEEKGLVSQQLDSFDEFMETSIQDLVWEEPRLILDQ
PAQHTNEKDNINKRYEIRFGKIYLSRPTMTEADGTTHAMFPQEARLRNLTYSSPVYLDME
KSMFTSIDDEGNPNATLDWQQVHEPIKDGVEEGNKVHIGKVPIMLRSKFCSLRTLDEVDL
YKMKECPYDMGGYFVINGSEKVLIAQERSAANIVQVFKKAAPSPISHVAEIRSALEKGSR
LISTMQIKLYGREDKGTGRTIKATLPYVKQDIPIVIVFRALGVVPDGEILQHICYDENDW
QMLEMLKPCIEEGFVIQDKEVALDFIGRRGSAALGIRREKRIQYAKDILQKELLPHITQE
EGFETRKTFFLGYMVNRLLLCALERKDQDDRDHFGKKRLDLAGPLLANLFRILFRKLTRE
IYRYMQRCIETDRDFNLNLAVKSTTITSGLKYSLATGNWGEQKKAMSSRAGVSQVLNRYT
YSSTLSHLRRTNTPIGRDGKLAKPRQLHNTHWGLVCPAETPEGQACGLVKNLSLLSGISI
GSPSEPIINFLEEWGMEPLEDYDPAQHTKSTRIFVNGVWTGIHRDPSMLVSTMRDLRRSG
AISPEVSIIRDIREREFKIFTDVGRVYRPLFIVEDDESKDNKGELRITKEHIRKIQQGYD
DDAMNDDSEEQEQDVYGWSSLVTSGVIEYVDGEEEETIMIAMTPEDLQTRSLEQKEIDLN
DTAKRIKPEMSTSSHHTFTHCEIHPSMILGVAASIIPFPDHNQSPRNTYQSAMGKQAMGV
FLTNYNVRMDTMANILYYPQKPLAKTQAMEYLKFRELPAGQNAIVAIACYSGYNQEDSMI
MNQSSIDRGLFRSLFFRSYMDQEKRFGISIVEEFEKPTRATTLRLKHGTYEKLDEDGLIA
PGVRVSGDDIIIGKTTPIPPDTEELGQRTKYHTKRDASTPLRSTENGIVDQVLLTTNQEG
LKFVKVRMRTTKVPQIGDKFASRHGQKGTIGVTYRHEDMPFSAEGIVPDLIINPHAIPSR
MTVAHLIECLLSKVGSIRGYEGDATPFTDLTVDAVSNLLRDNGYQSRGFEVMYNGHTGKK
LMAQVFFGPTYYQRLRHMVDDKIHARARGPVQVLTRQPVEGRSRDGGLRFGEMERDCMIA
HGAAGFLKERLMEASDAFRVHVCGICGLMSVIANLKKNQFECRSCKNKTNIYQLHIPYAA
KLLFQELMAMNIAPRLYTERSGVSMRS
Sequence of entity 3 (C), FASTA
>9UJS_3 RNA polymerase II third largest subunit B44, part of central core (chains C)
MSKEPKVNIINAQDDEVELMLSDVNLSLANSLRRTMLAEVPTLAIDLVEIKMNTSVLADE
FISHRLGLIPLVSEDVEEMKYSRDCTCEDYCDECSVVLELSARHEGEEGTTDVYSSSLIK
VSGPGNLNVGEPVRRDDYDQGILLCKLRNHQELNIRCIAKKGIAKEHAKWSPCSAIAFEY
DPHNKLKHTDFWFEVDAKKEWPDSKYATWEEPPKPGEVFDYKAKPNRFYMTVETTGSLKA
NQVFSRGIKTLQEKLANVLFELENSRPANTTAYGGATAYGGQTVYGRETSYGGNTNYGDY
NAPY
Sequence of entity 4 (D), FASTA
>9UJS_4 RNA polymerase II subunit B32 (chains D)
MNVSTSTVGARRRRAKQQVDDEENATLLRLGPEFALKQYDHDGNEHDLIALSLSESRLLI
REALKARSRARNGGVDIESSNGEIDDDELAKVTSGAVANGVVKKTLDYLNTFARFKDEET
CTAVDQLLHNSSDCSVLHPFEIAQLSSLGCEDVDEAITLIPSLAAKKEVNLQRILDELNR
LEDPYK
Sequence of entity 5 (E), FASTA
>9UJS_5 RNA polymerase subunit ABC27, common to RNA polymerases I, II, and III (chains E)
MEDNNRIISRLWRSFRTVKEMAADRGYFISQEEMDQSLEEFRSKICDSMGNPQRKLMSFL
ANPTPEALEKYSDLGTLWVEFCDEPSVGIKTMRNFCLRIQEKNFSTGIFIYQNNITPSAN
KMIPTVSPAIIETFQESDLVVNITHHELVPKHIRLSDGEKSQLLQRYKLKESQLPRIQRE
DPVARYLGLKRGQVVKIIRRSETSGRYASYRICL
Sequence of entity 6 (F), FASTA
>9UJS_6 RNA polymerase subunit ABC23, common to RNA polymerases I, II, and III (chains F)
MSEDEAFNEQTENFENFEDEHFSDDNFEDRSTQPEDYAVGVTADGRQIINGDGIQEVNGT
IKAHRKRSNKELAILKEERTTTPYLTKYERARILGTRALQISMNAPVLVDIEGETDPLQI
AMKELSQRKIPLVIRRYLPDGSYEDWGCDELIVDN
Sequence of entity 7 (G), FASTA
>9UJS_7 RNA polymerase II subunit (chains G)
MFFLKDLSLILTLHPSYFGPQMNQYLREKLLTDVEGTCTGQFGYIVTVLDGMNIDVGKGR
IIPGSGSAEFEVKYRAVVWKPFKGEVVDAIVSNVSPIGFFADVGPLNVFVSTRLIPDNLV
YNPSNSPPAYMSNDELITKGSKVRLKVVGTRTDVNEIYAIGSIKEDFLGAI
Sequence of entity 8 (H), FASTA
>9UJS_8 DNA-directed RNA polymerases I, II, and III subunit RPABC3 (chains H)
MSSALFDDIFTVQTVDNGRYNKVSRIIGISTTNSAIKLTLDINNEMFPVSQDDSLTVTLA
NSLSLDGEDESANFSKSWRPPKPTDKSLADDYDYVMFGTVYKFEEGDEDKIKVYVSFGGL
LMCLEGGYKSLASLKQDNLYILIRR
Sequence of entity 9 (I), FASTA
>9UJS_9 DNA-directed RNA polymerase subunit (chains I)
MASFRFCLECNNMLYPKEDKENQRLLYSCRNCDYTELAEDPKVYRHELITNIGETAGIVD
DIGQDPTLPRSDKECPECHSRDCVFFQSQQRRKDTNMTLFYVCLNCKKTFRDESE
Sequence of entity 10 (J), FASTA
>9UJS_10 RNA polymerase subunit ABC10-beta, common to RNA polymerases I, II, and III (chains J)
MIIPVRCFSCGKVVGDKWDAYLRLLEEGKQEGDALDELKLKRYCCRRMVLTHVDLIEKFL
RYNPLEKKDFDS
Sequence of entity 11 (K), FASTA
>9UJS_11 RNA polymerase II subunit B12.5 (chains K)
MNAPDRFELFILPDDVPKLKITPDSRVPNCIIIKFEREDHTLANLLREELALYPDVTFVA
YKVEHPLFANFVMRLQTEEGTRPKQALERACASIINKLKTLDHKFNEEWNIKNFSLND
Sequence of entity 12 (L), FASTA
>9UJS_12 RNA polymerase subunit ABC10-alpha (chains L)
MSREGFVAPSGTDLAAAASGVAPNKHYGVKYTCGACAHNFSLNKSDPVRCKECGHRVIYK
ARTKRMIQFDAR

Primary citation

Structural basis of RNA polymerase II transcription on the histone H3-H4 octasome. Ho, C.H., Nozawa, K., Nishimura, M. et al. J Biol Chem (2026) 302:111340-111340. DOI 10.1016/j.jbc.2026.111340 · PubMed

Other PDB entries of the same protein (UniProt C4R4Y0), best resolution first:

Browse structure collections

About this viewer

MolViewer shows 9UJS directly in your browser with nothing to install. Switch between cartoon, ball-and-stick, spacefill and surface views, color by chain, secondary structure or B-factor, measure distances, angles and dihedrals, and share or embed the view.