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- PDB-9zpk: Cryo-EM structure of the complete Saccharomyces cerevisiae RNA po... -

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Basic information

Entry
Database: PDB / ID: 9zpk
TitleCryo-EM structure of the complete Saccharomyces cerevisiae RNA polymerase II in closed clamp conformation
Components
  • (DNA-directed RNA polymerase II subunit ...) x 7
  • (DNA-directed RNA polymerases I, II, and III subunit ...) x 5
KeywordsTRANSCRIPTION / RNA polymerase II / Conformations / Promoter loading / Eukaryote
Function / homology
Function and homology information


RPB4-RPB7 complex / nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / Formation of TC-NER Pre-Incision Complex / Estrogen-dependent gene expression ...RPB4-RPB7 complex / nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / Formation of TC-NER Pre-Incision Complex / Estrogen-dependent gene expression / RNA polymerase II transcribes snRNA genes / RNA Polymerase I Promoter Escape / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA Polymerase II Pre-transcription Events / RNA-templated transcription / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / termination of RNA polymerase II transcription / Gap-filling DNA repair synthesis and ligation in TC-NER / termination of RNA polymerase I transcription / Dual incision in TC-NER / transcription by RNA polymerase III / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / nucleolar large rRNA transcription by RNA polymerase I / transcription initiation at RNA polymerase I promoter / positive regulation of translational initiation / nuclear-transcribed mRNA catabolic process / termination of RNA polymerase III transcription / transcription initiation at RNA polymerase III promoter / RNA polymerase I complex / RNA polymerase III complex / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / transcription by RNA polymerase I / transcription elongation by RNA polymerase I / translesion synthesis / transcription-coupled nucleotide-excision repair / translation initiation factor binding / DNA-templated transcription initiation / transcription initiation at RNA polymerase II promoter / P-body / transcription elongation by RNA polymerase II / mRNA transcription by RNA polymerase II / ribonucleoside binding / mRNA processing / cytoplasmic stress granule / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / transcription by RNA polymerase II / peroxisome / single-stranded DNA binding / ribosome biogenesis / nucleic acid binding / protein dimerization activity / single-stranded RNA binding / nucleotide binding / mRNA binding / nucleolus / mitochondrion / DNA binding / nucleoplasm / zinc ion binding / metal ion binding / nucleus / cytoplasm
Similarity search - Function
DNA-directed RNA polymerase II subunit Rpb4-like / RNA polymerase Rpb4/RPC9, core / DNA-directed RNA-polymerase II subunit / RNA polymerase Rpb1 C-terminal repeat / RNA polymerase II, heptapeptide repeat, eukaryotic / Eukaryotic RNA polymerase II heptapeptide repeat. / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 7 / RNA polymerase Rpb1, domain 7 superfamily ...DNA-directed RNA polymerase II subunit Rpb4-like / RNA polymerase Rpb4/RPC9, core / DNA-directed RNA-polymerase II subunit / RNA polymerase Rpb1 C-terminal repeat / RNA polymerase II, heptapeptide repeat, eukaryotic / Eukaryotic RNA polymerase II heptapeptide repeat. / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 7 / RNA polymerase Rpb1, domain 7 superfamily / RNA polymerase Rpb1, domain 7 / Rpb4/RPC9 superfamily / Pol II subunit B9, C-terminal zinc ribbon / RNA polymerase RBP11 / RNA polymerase subunit Rpb4/RPC9 / RNA polymerase Rpb4 / Zinc finger TFIIS-type signature. / RNA polymerase Rpb7-like , N-terminal / RNA polymerase Rpb7-like, N-terminal domain superfamily / RNA polymerase subunit Rpb7-like / SHS2 domain found in N terminus of Rpb7p/Rpc25p/MJ0397 / HRDC-like superfamily / RNA polymerase Rpb2, domain 5 / RNA polymerase Rpb2, domain 5 / RNA polymerase Rpb2, domain 4 / RNA polymerase Rpb2, domain 4 / DNA-directed RNA polymerase, M/15kDa subunit / RNA polymerases M/15 Kd subunit / RNA polymerase subunit 9 / DNA-directed RNA polymerase M, 15kDa subunit, conserved site / RNA polymerases M / 15 Kd subunits signature. / DNA-directed RNA polymerase subunit/transcription factor S / RNA polymerase, Rpb8 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / RNA polymerase Rpb8 / RNA polymerase subunit 8 / RNA polymerase, Rpb5, N-terminal / RNA polymerase Rpb5, N-terminal domain superfamily / RNA polymerase Rpb5, N-terminal domain / DNA-directed RNA polymerase, subunit RPB6 / : / DNA-directed RNA polymerase subunit RPABC5/Rpb10 / RNA polymerases, subunit N, zinc binding site / RNA polymerase subunit RPB10 / RNA polymerases N / 8 kDa subunit / RNA polymerases N / 8 Kd subunits signature. / RNA polymerase, subunit H/Rpb5, conserved site / RNA polymerases H / 23 Kd subunits signature. / DNA directed RNA polymerase, 7 kDa subunit / Zinc finger, TFIIS-type / RNA polymerase archaeal subunit P/eukaryotic subunit RPABC4 / Transcription factor S-II (TFIIS) / Zinc finger TFIIS-type profile. / C2C2 Zinc finger / RNA polymerase subunit CX / DNA-directed RNA polymerase, 30-40kDa subunit, conserved site / DNA-directed RNA polymerase subunit Rpo3/Rpb3/RPAC1 / RNA polymerases D / 30 to 40 Kd subunits signature. / DNA-directed RNA polymerase Rpb11, 13-16kDa subunit, conserved site / DNA-directed RNA polymerase subunit Rpo11 / RNA polymerases L / 13 to 16 Kd subunits signature. / RNA polymerase subunit RPABC4/transcription elongation factor Spt4 / DNA-directed RNA polymerase, RBP11-like dimerisation domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerase, subunit H/Rpb5 C-terminal / DNA-directed RNA polymerase subunit Rpo5/Rpb5 / RPB5-like RNA polymerase subunit superfamily / RNA polymerase Rpb5, C-terminal domain / Archaeal Rpo6/eukaryotic RPB6 RNA polymerase subunit / DNA-directed RNA polymerase, 14-18kDa subunit, conserved site / RNA polymerases K / 14 to 18 Kd subunits signature. / Ribosomal protein S1-like RNA-binding domain / S1 RNA binding domain / S1 domain / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb6 / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 3 superfamily / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RPB6/omega subunit-like superfamily / RNA polymerase Rpb1, clamp domain superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / DNA-directed RNA polymerase, insert domain / DNA-directed RNA polymerase, RpoA/D/Rpb3-type / RNA polymerase Rpb3/RpoA insert domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerases D / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb2, domain 2
Similarity search - Domain/homology
DNA-directed RNA polymerase II subunit RPB1 / DNA-directed RNA polymerase II subunit RPB2 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerase II subunit RPB9 / DNA-directed RNA polymerase II subunit RPB7 ...DNA-directed RNA polymerase II subunit RPB1 / DNA-directed RNA polymerase II subunit RPB2 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerase II subunit RPB9 / DNA-directed RNA polymerase II subunit RPB7 / DNA-directed RNA polymerase II subunit RPB11 / DNA-directed RNA polymerases I, II, and III subunit RPABC4
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.31 Å
AuthorsFordjour, G.N.R. / Murakami, K. / Armache, J.-P. / Murakami, K.S.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35 GM156623 United States
CitationJournal: To Be Published
Title: Clamp conformational flexibility and dynamics in archaeal and eukaryotic RNA polymerases revealed by cryo-EM
Authors: Fordjour, G.N.R. / Murakami, K. / Armache, J.-P. / Murakami, K.S.
History
DepositionDec 16, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 5, 2026Provider: repository / Type: Initial release
Revision 1.0Aug 5, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Aug 5, 2026Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Aug 5, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Aug 5, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Aug 5, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Aug 5, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: DNA-directed RNA polymerase II subunit RPB1
B: DNA-directed RNA polymerase II subunit RPB2
C: DNA-directed RNA polymerase II subunit RPB3
D: DNA-directed RNA polymerase II subunit RPB4
E: DNA-directed RNA polymerases I, II, and III subunit RPABC1
F: DNA-directed RNA polymerases I, II, and III subunit RPABC2
G: DNA-directed RNA polymerase II subunit RPB7
H: DNA-directed RNA polymerases I, II, and III subunit RPABC3
I: DNA-directed RNA polymerase II subunit RPB9
J: DNA-directed RNA polymerases I, II, and III subunit RPABC5
K: DNA-directed RNA polymerase II subunit RPB11
L: DNA-directed RNA polymerases I, II, and III subunit RPABC4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)514,68120
Polymers514,15812
Non-polymers5238
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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DNA-directed RNA polymerase II subunit ... , 7 types, 7 molecules ABCDGIK

#1: Protein DNA-directed RNA polymerase II subunit RPB1 / RNA polymerase II subunit 1 / RNA polymerase II subunit B1 / DNA-directed RNA polymerase III ...RNA polymerase II subunit 1 / RNA polymerase II subunit B1 / DNA-directed RNA polymerase III largest subunit / RNA polymerase II subunit B220


Mass: 191821.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P04050, DNA-directed RNA polymerase
#2: Protein DNA-directed RNA polymerase II subunit RPB2 / RNA polymerase II subunit 2 / B150 / DNA-directed RNA polymerase II 140 kDa polypeptide


Mass: 138937.297 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P08518, DNA-directed RNA polymerase
#3: Protein DNA-directed RNA polymerase II subunit RPB3 / RNA polymerase II subunit 3 / RNA polymerase II subunit B3 / B44.5 / DNA-directed RNA polymerase II ...RNA polymerase II subunit 3 / RNA polymerase II subunit B3 / B44.5 / DNA-directed RNA polymerase II 45 kDa polypeptide


Mass: 35330.457 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P16370
#4: Protein DNA-directed RNA polymerase II subunit RPB4 / RNA polymerase II subunit B4 / B32 / DNA-directed RNA polymerase II 32 kDa polypeptide


Mass: 25451.191 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P20433
#7: Protein DNA-directed RNA polymerase II subunit RPB7 / RNA polymerase II subunit B7 / B16


Mass: 19081.053 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P34087
#9: Protein DNA-directed RNA polymerase II subunit RPB9 / RNA polymerase II subunit B9 / B12.6 / DNA-directed RNA polymerase II 14.2 kDa polypeptide / DNA- ...RNA polymerase II subunit B9 / B12.6 / DNA-directed RNA polymerase II 14.2 kDa polypeptide / DNA-directed RNA polymerase II subunit 9


Mass: 14308.161 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P27999
#11: Protein DNA-directed RNA polymerase II subunit RPB11 / RNA polymerase II subunit B11 / B13.6 / DNA-directed RNA polymerase II 13.6 kDa polypeptide


Mass: 13633.493 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P38902

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DNA-directed RNA polymerases I, II, and III subunit ... , 5 types, 5 molecules EFHJL

#5: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC1 / RNA polymerases I / II / and III subunit ABC1 / ABC27 / DNA-directed RNA polymerases I / and III 27 ...RNA polymerases I / II / and III subunit ABC1 / ABC27 / DNA-directed RNA polymerases I / and III 27 kDa polypeptide


Mass: 25117.094 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P20434
#6: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC2


Mass: 17931.834 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P20435
#8: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC3 / RNA polymerases I / II / and III subunit ABC3 / ABC14.4 / ABC14.5 / DNA-directed RNA polymerases I ...RNA polymerases I / II / and III subunit ABC3 / ABC14.4 / ABC14.5 / DNA-directed RNA polymerases I / and III 14.5 kDa polypeptide


Mass: 16525.363 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P20436
#10: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC5 / RNA polymerases I / II / and III subunit ABC5 / ABC10-beta / ABC8 / DNA-directed RNA polymerases I ...RNA polymerases I / II / and III subunit ABC5 / ABC10-beta / ABC8 / DNA-directed RNA polymerases I / and III 8.3 kDa polypeptide


Mass: 8290.732 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P22139
#12: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC4 / RNA polymerases I / II / and III subunit ABC4 / ABC10-alpha


Mass: 7729.969 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P40422

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Non-polymers , 1 types, 8 molecules

#13: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: Zn

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Details

Has ligand of interestN
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: RNA polymerase / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1-#12 / Source: NATURAL
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company
MicroscopyModel: FEI TALOS ARCTICA
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: -2200 nm / Nominal defocus min: -800 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

EM software
IDNameVersionCategory
1cryoSPARCparticle selection
2PHENIX2.0_5936model refinement
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.31 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 208045 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 101.05 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.004632025
ELECTRON MICROSCOPYf_angle_d0.725743224
ELECTRON MICROSCOPYf_chiral_restr0.04864852
ELECTRON MICROSCOPYf_plane_restr0.0055611
ELECTRON MICROSCOPYf_dihedral_angle_d5.15964302

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