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- EMDB-10020: RNA Polymerase I Open Complex conformation 2 focused refinement on Pol -

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Basic information

Entry
Database: EMDB / ID: EMD-10020
TitleRNA Polymerase I Open Complex conformation 2 focused refinement on Pol
Map dataRNA Polymerase I Open Complex conformation 2 (OC2) focused refinement on Pol
Sample
  • Complex: RNA Polymerase I Open Complex conformation 2 focused refinement on Pol
    • Complex: RNA Polymerase I
    • Complex: DNA
    • Complex: transcription initiation factors
Function / homology
Function and homology information


RNA polymerase I core binding / rDNA binding / RNA polymerase I general transcription initiation factor activity / RNA polymerase I general transcription initiation factor binding / RNA polymerase I preinitiation complex assembly / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / regulation of cell size / RNA Pol II CTD phosphorylation and interaction with CE ...RNA polymerase I core binding / rDNA binding / RNA polymerase I general transcription initiation factor activity / RNA polymerase I general transcription initiation factor binding / RNA polymerase I preinitiation complex assembly / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / regulation of cell size / 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 / RNA-templated transcription / RNA Polymerase II Pre-transcription Events / termination of RNA polymerase III transcription / Formation of TC-NER Pre-Incision Complex / RNA polymerase III activity / transcription initiation at RNA polymerase III promoter / termination of RNA polymerase I transcription / RNA Polymerase I Promoter Escape / nucleolar large rRNA transcription by RNA polymerase I / Gap-filling DNA repair synthesis and ligation in TC-NER / transcription by RNA polymerase I / transcription initiation at RNA polymerase I promoter / Estrogen-dependent gene expression / transcription by RNA polymerase III / Dual incision in TC-NER / transcription elongation by RNA polymerase I / tRNA transcription by RNA polymerase III / RNA polymerase I activity / RNA polymerase I complex / RNA polymerase III complex / RNA polymerase II, core complex / promoter-specific chromatin binding / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / ribonucleoside binding / DNA-directed RNA polymerase / peroxisome / ribosome biogenesis / RNA polymerase II-specific DNA-binding transcription factor binding / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / nucleolus / negative regulation of transcription by RNA polymerase II / DNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytoplasm
Similarity search - Function
RNA polymerase I specific transcription initiation factor RRN3 / RNA polymerase I specific transcription initiation factor RRN3 / : / RNA polymerase I, subunit Rpa14, fungi / Yeast RNA polymerase I subunit RPA14 / DNA-directed RNA polymerase I, subunit RPA34.5 / DNA-directed RNA polymerase I subunit RPA34.5 / RNA polymerase I associated factor, A49-like / A49-like RNA polymerase I associated factor / Rpa43, N-terminal ribonucleoprotein (RNP) domain ...RNA polymerase I specific transcription initiation factor RRN3 / RNA polymerase I specific transcription initiation factor RRN3 / : / RNA polymerase I, subunit Rpa14, fungi / Yeast RNA polymerase I subunit RPA14 / DNA-directed RNA polymerase I, subunit RPA34.5 / DNA-directed RNA polymerase I subunit RPA34.5 / RNA polymerase I associated factor, A49-like / A49-like RNA polymerase I associated factor / Rpa43, N-terminal ribonucleoprotein (RNP) domain / RPA43, OB domain / RPA43 OB domain in RNA Pol I / DNA-directed RNA polymerase I subunit RPA2, domain 4 / DNA-directed RNA pol I, largest subunit / Pol I subunit A12, C-terminal zinc ribbon / : / RNA polymerase I, Rpa2 specific domain / DNA-directed RNA polymerases I and III subunit AC19 / DNA-directed RNA polymerases I and III subunit AC40 / 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 / DNA-directed RNA polymerase, M/15kDa subunit / RNA polymerases M/15 Kd subunit / RNA polymerase subunit 9 / 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. / 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, 7 kDa subunit / RNA polymerase archaeal subunit P/eukaryotic subunit RPABC4 / RNA polymerase, subunit H/Rpb5, conserved site / RNA polymerases H / 23 Kd subunits signature. / 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. / Zinc finger, TFIIS-type / DNA-directed RNA polymerase subunit Rpo5/Rpb5 / Transcription factor S-II (TFIIS) / Zinc finger TFIIS-type profile. / C2C2 Zinc finger / DNA-directed RNA polymerase, RBP11-like dimerisation domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerase, subunit H/Rpb5 C-terminal / RNA polymerase subunit RPABC4/transcription elongation factor Spt4 / 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. / RNA polymerase Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 superfamily / RPB6/omega subunit-like superfamily / RNA polymerase Rpb1, clamp domain superfamily / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / 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, beta subunit, protrusion / RNA polymerase beta subunit / RNA polymerase, N-terminal / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / 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 / DNA-directed RNA polymerase, insert domain superfamily / RNA polymerase, RBP11-like subunit / RNA polymerase Rpb2, domain 2
Similarity search - Domain/homology
DNA-directed RNA polymerases I and III subunit RPAC1 / DNA-directed RNA polymerase I subunit RPA190 / 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 polymerase I subunit RPA135 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerases I and III subunit RPAC2 / DNA-directed RNA polymerase I subunit RPA12 / RNA polymerase I-specific transcription initiation factor RRN3 ...DNA-directed RNA polymerases I and III subunit RPAC1 / DNA-directed RNA polymerase I subunit RPA190 / 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 polymerase I subunit RPA135 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerases I and III subunit RPAC2 / DNA-directed RNA polymerase I subunit RPA12 / RNA polymerase I-specific transcription initiation factor RRN3 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / DNA-directed RNA polymerase I subunit RPA43 / DNA-directed RNA polymerase I subunit RPA34 / DNA-directed RNA polymerase I subunit RPA14 / DNA-directed RNA polymerase I subunit RPA49
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.96 Å
AuthorsMueller CW / Sadian Y
Funding support1 items
OrganizationGrant numberCountry
European Research CouncilERC-2013-AdG340964-POL1PIC
CitationJournal: Nat Commun / Year: 2019
Title: Molecular insight into RNA polymerase I promoter recognition and promoter melting.
Authors: Yashar Sadian / Florence Baudin / Lucas Tafur / Brice Murciano / Rene Wetzel / Felix Weis / Christoph W Müller /
Abstract: RNA polymerase I (Pol I) assembles with core factor (CF) and Rrn3 on the rDNA core promoter for transcription initiation. Here, we report cryo-EM structures of closed, intermediate and open Pol I ...RNA polymerase I (Pol I) assembles with core factor (CF) and Rrn3 on the rDNA core promoter for transcription initiation. Here, we report cryo-EM structures of closed, intermediate and open Pol I initiation complexes from 2.7 to 3.7 Å resolution to visualize Pol I promoter melting and to structurally and biochemically characterize the recognition mechanism of Pol I promoter DNA. In the closed complex, double-stranded DNA runs outside the DNA-binding cleft. Rotation of CF and upstream DNA with respect to Pol I and Rrn3 results in the spontaneous loading and opening of the promoter followed by cleft closure and positioning of the Pol I A49 tandem winged helix domain (tWH) onto DNA. Conformational rearrangement of A49 tWH leads to a clash with Rrn3 to initiate complex disassembly and promoter escape. Comprehensive insight into the Pol I transcription initiation cycle allows comparisons with promoter opening by Pol II and Pol III.
History
DepositionJun 3, 2019-
Header (metadata) releaseApr 22, 2020-
Map releaseApr 22, 2020-
UpdateApr 22, 2020-
Current statusApr 22, 2020Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.05
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by radius
  • Surface level: 0.05
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_10020.png

Downloads & links

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Map

FileDownload / File: emd_10020.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationRNA Polymerase I Open Complex conformation 2 (OC2) focused refinement on Pol
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.32 Å/pix.
x 288 pix.
= 380.16 Å		1.32 Å/pix.
x 288 pix.
= 380.16 Å		1.32 Å/pix.
x 288 pix.
= 380.16 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.32 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.05 / Movie #1: 0.05
Minimum - Maximum-0.21976033 - 0.4304662
Average (Standard dev.)0.00050026295 (±0.009524927)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 380.16 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.321.321.32
M x/y/z288288288
origin x/y/z0.0000.0000.000
length x/y/z380.160380.160380.160
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS288288288
D min/max/mean-0.2200.4300.001

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Supplemental data

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Sample components

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Entire : RNA Polymerase I Open Complex conformation 2 focused refinement on Pol

EntireName: RNA Polymerase I Open Complex conformation 2 focused refinement on Pol
Components
  • Complex: RNA Polymerase I Open Complex conformation 2 focused refinement on Pol
    • Complex: RNA Polymerase I
    • Complex: DNA
    • Complex: transcription initiation factors

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Supramolecule #1: RNA Polymerase I Open Complex conformation 2 focused refinement on Pol

SupramoleculeName: RNA Polymerase I Open Complex conformation 2 focused refinement on Pol
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#20

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Supramolecule #2: RNA Polymerase I

SupramoleculeName: RNA Polymerase I / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #3-#16
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)

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Supramolecule #3: DNA

SupramoleculeName: DNA / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #1-#2
Source (natural)Organism: synthetic construct (others)
Recombinant expressionOrganism: synthetic construct (others)

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Supramolecule #4: transcription initiation factors

SupramoleculeName: transcription initiation factors / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #17-#20
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Recombinant expressionOrganism: Escherichia coli (E. coli)

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 4 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 1.57175 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: Gctf
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.96 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 59963
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION

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