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- PDB-4v1m: Architecture of the RNA polymerase II-Mediator core transcription... -
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Basic information
Entry | Database: PDB / ID: 4v1m | |||||||||
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Title | Architecture of the RNA polymerase II-Mediator core transcription initiation complex | |||||||||
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![]() | TRANSCRIPTION / TRANSCRIPTION INITIATION / RNA POLYMERASE II / GENERAL TRANSCRIPTION FACTORS | |||||||||
Function / homology | ![]() 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 / RNA polymerase II transcribes snRNA genes / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening ...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 / RNA polymerase II transcribes snRNA genes / 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 / termination of RNA polymerase II transcription / RNA-templated transcription / termination of RNA polymerase III transcription / RNA Polymerase II Pre-transcription Events / Formation of TC-NER Pre-Incision Complex / termination of RNA polymerase I transcription / transcription initiation at RNA polymerase III promoter / RNA Polymerase I Promoter Escape / nucleolar large rRNA transcription by RNA polymerase I / Gap-filling DNA repair synthesis and ligation in TC-NER / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / transcription initiation at RNA polymerase I promoter / transcription by RNA polymerase I / Estrogen-dependent gene expression / transcription by RNA polymerase III / Dual incision in TC-NER / transcription elongation by RNA polymerase I / RNA polymerase I complex / RNA polymerase III complex / transcription-coupled nucleotide-excision repair / RNA polymerase III activity / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / RNA polymerase I activity / translesion synthesis / RNA polymerase II activity / transcription elongation by RNA polymerase II / transcription initiation at RNA polymerase II promoter / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / cytoplasmic stress granule / DNA-directed RNA polymerase / peroxisome / ribosome biogenesis / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / mRNA binding / nucleolus / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() ![]() SYNTHETIC CONSTRUCT (others) | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6.6 Å | |||||||||
![]() | Plaschka, C. / Lariviere, L. / Wenzeck, L. / Hemann, M. / Tegunov, D. / Petrotchenko, E.V. / Borchers, C.H. / Baumeister, W. / Herzog, F. / Villa, E. / Cramer, P. | |||||||||
![]() | ![]() Title: Architecture of the RNA polymerase II-Mediator core initiation complex. Authors: C Plaschka / L Larivière / L Wenzeck / M Seizl / M Hemann / D Tegunov / E V Petrotchenko / C H Borchers / W Baumeister / F Herzog / E Villa / P Cramer / ![]() ![]() ![]() Abstract: The conserved co-activator complex Mediator enables regulated transcription initiation by RNA polymerase (Pol) II. Here we reconstitute an active 15-subunit core Mediator (cMed) comprising all ...The conserved co-activator complex Mediator enables regulated transcription initiation by RNA polymerase (Pol) II. Here we reconstitute an active 15-subunit core Mediator (cMed) comprising all essential Mediator subunits from Saccharomyces cerevisiae. The cryo-electron microscopic structure of cMed bound to a core initiation complex was determined at 9.7 Å resolution. cMed binds Pol II around the Rpb4-Rpb7 stalk near the carboxy-terminal domain (CTD). The Mediator head module binds the Pol II dock and the TFIIB ribbon and stabilizes the initiation complex. The Mediator middle module extends to the Pol II foot with a 'plank' that may influence polymerase conformation. The Mediator subunit Med14 forms a 'beam' between the head and middle modules and connects to the tail module that is predicted to bind transcription activators located on upstream DNA. The Mediator 'arm' and 'hook' domains contribute to a 'cradle' that may position the CTD and TFIIH kinase to stimulate Pol II phosphorylation. | |||||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 759.7 KB | Display | ![]() |
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PDB format | ![]() | 600.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 945.7 KB | Display | ![]() |
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Full document | ![]() | 1023 KB | Display | |
Data in XML | ![]() | 97.5 KB | Display | |
Data in CIF | ![]() | 152.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 2784MC ![]() 2785C ![]() 2786C ![]() 4v1nC ![]() 4v1oC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-DNA-DIRECTED RNA POLYMERASE II SUBUNIT ... , 5 types, 5 molecules ABCIK
#1: Protein | Mass: 191821.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#2: Protein | Mass: 138937.297 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#3: Protein | Mass: 35330.457 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#7: Protein | Mass: 14308.161 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#9: Protein | Mass: 13633.493 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC ... , 5 types, 5 molecules EFHJL
#4: Protein | Mass: 25117.094 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#5: Protein | Mass: 17931.834 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#6: Protein | Mass: 16525.363 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#8: Protein | Mass: 8290.732 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#10: Protein | Mass: 7729.969 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-DNA chain , 2 types, 2 molecules NT
#11: DNA chain | Mass: 3068.042 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) SYNTHETIC CONSTRUCT (others) |
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#13: DNA chain | Mass: 6130.794 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) SYNTHETIC CONSTRUCT (others) |
-RNA chain , 1 types, 1 molecules P
#12: RNA chain | Mass: 1914.229 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) SYNTHETIC CONSTRUCT (others) |
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-Non-polymers , 2 types, 9 molecules ![](data/chem/img/ZN.gif)
![](data/chem/img/MG.gif)
![](data/chem/img/MG.gif)
#14: Chemical | ChemComp-ZN / #15: Chemical | ChemComp-MG / | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: POL II-DNA-RNA / Type: COMPLEX |
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Buffer solution | Name: 25 MM HEPES-KOH PH 7.5, 180 MM POTASSIUM ACETATE, 5 % GLYCEROL, 5 MM DTT pH: 7.5 Details: 25 MM HEPES-KOH PH 7.5, 180 MM POTASSIUM ACETATE, 5 % GLYCEROL, 5 MM DTT |
Specimen | Conc.: 0.15 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: OTHER |
Vitrification | Cryogen name: ETHANE Details: GRIDS WERE GLOW- DISCHARGED FOR 20 S BEFORE DEPOSITION OF 4 MICROLITERS SAMPLE AND INCUBATED FOR 30 S. GRIDS WERE WASHED TWICE WITH 4 MICROLITERS DISTILLED WATER, BLOTTED, AND VITRIFIED BY ...Details: GRIDS WERE GLOW- DISCHARGED FOR 20 S BEFORE DEPOSITION OF 4 MICROLITERS SAMPLE AND INCUBATED FOR 30 S. GRIDS WERE WASHED TWICE WITH 4 MICROLITERS DISTILLED WATER, BLOTTED, AND VITRIFIED BY PLUNGING INTO LIQUID ETHANE WITH A MANUAL PLUNGER. |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS / Date: Aug 1, 2013 |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 37000 X / Calibrated magnification: 37169 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm / Cs: 2 mm |
Image recording | Electron dose: 25 e/Å2 / Film or detector model: GATAN K2 (4k x 4k) |
Radiation wavelength | Relative weight: 1 |
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Processing
EM software |
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CTF correction | Details: EACH PARTICLE | ||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||
3D reconstruction | Resolution: 6.6 Å / Num. of particles: 14777 / Nominal pixel size: 1.35 Å / Actual pixel size: 1.35 Å Details: SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2784. (DEPOSITION ID: 12825). Symmetry type: POINT | ||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL / Target criteria: Cross-correlation coefficient / Details: METHOD--RIGID BODY | ||||||||||||
Atomic model building | PDB-ID: 4A3D Accession code: 4A3D / Source name: PDB / Type: experimental model | ||||||||||||
Refinement | Highest resolution: 6.6 Å | ||||||||||||
Refinement step | Cycle: LAST / Highest resolution: 6.6 Å
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