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- EMDB-12624: Focused refinement of XPB containing part of TFIIH in pre-translo... -

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Basic information

Entry
Database: EMDB / ID: EMD-12624
TitleFocused refinement of XPB containing part of TFIIH in pre-translocated state (without ADP-BeF3)
Map dataLocal resolution filtered and sharpened map
Sample
  • Complex: XPB containing part of TFIIH (without ADP-BeF3)
Function / homology
Function and homology information


core TFIIH complex portion of holo TFIIH complex / nucleotide-excision repair, DNA duplex unwinding / hair cell differentiation / nucleotide-excision repair factor 3 complex / transcription factor TFIIE complex / nucleotide-excision repair, preincision complex assembly / UV protection / transcription open complex formation at RNA polymerase II promoter / transcription factor TFIIH holo complex / transcription factor TFIIH core complex ...core TFIIH complex portion of holo TFIIH complex / nucleotide-excision repair, DNA duplex unwinding / hair cell differentiation / nucleotide-excision repair factor 3 complex / transcription factor TFIIE complex / nucleotide-excision repair, preincision complex assembly / UV protection / transcription open complex formation at RNA polymerase II promoter / transcription factor TFIIH holo complex / transcription factor TFIIH core complex / DNA 3'-5' helicase / RNA Polymerase I Transcription Termination / transcription preinitiation complex / regulation of mitotic cell cycle phase transition / 3'-5' DNA helicase activity / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / transcription factor TFIID complex / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / RNA polymerase II general transcription initiation factor activity / mRNA Capping / HIV Transcription Initiation / RNA Polymerase II HIV Promoter Escape / Transcription of the HIV genome / 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 I Transcription Initiation / ATPase activator activity / DNA topological change / RNA polymerase II transcribes snRNA genes / Tat-mediated elongation of the HIV-1 transcript / transcription elongation by RNA polymerase I / Formation of HIV-1 elongation complex containing HIV-1 Tat / transcription-coupled nucleotide-excision repair / embryonic organ development / Formation of HIV elongation complex in the absence of HIV Tat / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / response to UV / RNA Polymerase II Pre-transcription Events / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / isomerase activity / promoter-specific chromatin binding / nucleotide-excision repair / TP53 Regulates Transcription of DNA Repair Genes / transcription initiation at RNA polymerase II promoter / RNA Polymerase I Promoter Escape / transcription elongation by RNA polymerase II / NoRC negatively regulates rRNA expression / cellular response to gamma radiation / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Dual Incision in GG-NER / Formation of Incision Complex in GG-NER / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / protein localization / double-stranded DNA binding / response to oxidative stress / transcription by RNA polymerase II / damaged DNA binding / response to hypoxia / nuclear speck / positive regulation of apoptotic process / DNA repair / nucleolus / apoptotic process / ATP hydrolysis activity / DNA binding / nucleoplasm / ATP binding / nucleus / metal ion binding / cytosol / cytoplasm
Similarity search - Function
Transcription factor TFIIE alpha subunit, C-terminal / C-terminal general transcription factor TFIIE alpha / Helicase XPB/Ssl2 / ERCC3/RAD25/XPB helicase, C-terminal domain / Helicase XPB/Ssl2, N-terminal domain / Helicase conserved C-terminal domain / ERCC3/RAD25/XPB C-terminal helicase / Transcription factor TFIIH subunit p52/Tfb2 / Transcription factor Tfb2, C-terminal domain / Transcription factor Tfb2 ...Transcription factor TFIIE alpha subunit, C-terminal / C-terminal general transcription factor TFIIE alpha / Helicase XPB/Ssl2 / ERCC3/RAD25/XPB helicase, C-terminal domain / Helicase XPB/Ssl2, N-terminal domain / Helicase conserved C-terminal domain / ERCC3/RAD25/XPB C-terminal helicase / Transcription factor TFIIH subunit p52/Tfb2 / Transcription factor Tfb2, C-terminal domain / Transcription factor Tfb2 / Transcription factor Tfb2 (p52) C-terminal domain / TFIIH subunit TTDA/Tfb5 / TFB5-like superfamily / Transcription factor TFIIH complex subunit Tfb5 / Transcription factor TFIIH complex subunit Tfb5 / : / Transcription initiation factor IIE subunit alpha, N-terminal / Transcription factor TFE/TFIIEalpha HTH domain / TFIIEalpha/SarR/Rpc3 HTH domain / Transcription factor E / TFIIE alpha subunit / TFE/IIEalpha-type HTH domain profile. / Transcription initiation factor IIE / Zinc finger, TFIIB-type / TFIIB zinc-binding / Helicase/UvrB, N-terminal / Type III restriction enzyme, res subunit / helicase superfamily c-terminal domain / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / Zinc finger, RING/FYVE/PHD-type / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
General transcription and DNA repair factor IIH helicase/translocase subunit XPB / General transcription factor IIE subunit 1 / General transcription factor IIH subunit 5 / General transcription factor IIH subunit 4
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsAibara S / Schilbach S / Cramer P
Funding support Germany, 5 items
OrganizationGrant numberCountry
H2020 Marie Curie Actions of the European Commission894862 Germany
German Research Foundation (DFG)EXC 2067/1 39072994 Germany
German Research Foundation (DFG)SFB860 Germany
German Research Foundation (DFG)SPP2191 Germany
European Research Council (ERC)882357 Germany
CitationJournal: Nature / Year: 2021
Title: Structures of mammalian RNA polymerase II pre-initiation complexes.
Authors: Shintaro Aibara / Sandra Schilbach / Patrick Cramer /
Abstract: The initiation of transcription is a focal point for the regulation of gene activity during mammalian cell differentiation and development. To initiate transcription, RNA polymerase II (Pol II) ...The initiation of transcription is a focal point for the regulation of gene activity during mammalian cell differentiation and development. To initiate transcription, RNA polymerase II (Pol II) assembles with general transcription factors into a pre-initiation complex (PIC) that opens promoter DNA. Previous work provided the molecular architecture of the yeast and human PIC and a topological model for DNA opening by the general transcription factor TFIIH. Here we report the high-resolution cryo-electron microscopy structure of PIC comprising human general factors and Sus scrofa domesticus Pol II, which is 99.9% identical to human Pol II. We determine the structures of PIC with closed and opened promoter DNA at 2.5-2.8 Å resolution, and resolve the structure of TFIIH at 2.9-4.0 Å resolution. We capture the TFIIH translocase XPB in the pre- and post-translocation states, and show that XPB induces and propagates a DNA twist to initiate the opening of DNA approximately 30 base pairs downstream of the TATA box. We also provide evidence that DNA opening occurs in two steps and leads to the detachment of TFIIH from the core PIC, which may stop DNA twisting and enable RNA chain initiation.
History
DepositionMar 16, 2021-
Header (metadata) releaseMay 5, 2021-
Map releaseMay 5, 2021-
UpdateJun 16, 2021-
Current statusJun 16, 2021Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 12
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by radius
  • Surface level: 12
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_12624.png

Downloads & links

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Map

FileDownload / File: emd_12624.map.gz / Format: CCP4 / Size: 347.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationLocal resolution filtered and sharpened map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesX (Sec.)Y (Row.)Z (Col.)
1.05 Å/pix.
x 450 pix.
= 472.5 Å		1.05 Å/pix.
x 450 pix.
= 472.5 Å		1.05 Å/pix.
x 450 pix.
= 472.5 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.05 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 12.0 / Movie #1: 12
Minimum - Maximum-64.940186 - 96.702286
Average (Standard dev.)-0.0034948315 (±0.9394564)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderZYX
Origin000
Dimensions450450450
Spacing450450450
CellA=B=C: 472.49997 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.051.051.05
M x/y/z450450450
origin x/y/z0.0000.0000.000
length x/y/z472.500472.500472.500
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ450450450
MAP C/R/S321
start NC/NR/NS000
NC/NR/NS450450450
D min/max/mean-64.94096.702-0.003

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Supplemental data

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Mask #1

Fileemd_12624_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: Local resolution filtered map, unsharpened

Fileemd_12624_additional_1.map
AnnotationLocal resolution filtered map, unsharpened
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Unfiltered half map 2

Fileemd_12624_half_map_1.map
AnnotationUnfiltered half map 2
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Unfiltered half map 1

Fileemd_12624_half_map_2.map
AnnotationUnfiltered half map 1
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : XPB containing part of TFIIH (without ADP-BeF3)

EntireName: XPB containing part of TFIIH (without ADP-BeF3)
Components
  • Complex: XPB containing part of TFIIH (without ADP-BeF3)

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Supramolecule #1: XPB containing part of TFIIH (without ADP-BeF3)

SupramoleculeName: XPB containing part of TFIIH (without ADP-BeF3) / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#22
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
Molecular weightTheoretical: 150 KDa

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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

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 41.1 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

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 129156
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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