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- PDB-7oh9: Nucleosome with TBP and TFIIA bound at SHL -6 -

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Basic information

Entry
Database: PDB / ID: 7oh9
TitleNucleosome with TBP and TFIIA bound at SHL -6
Components
  • (DNA (145-MER)) x 2
  • (Transcription initiation factor IIA ...) x 2
  • Histone H2A
  • Histone H2B 1.1
  • Histone H3.2
  • Histone H4
  • TATA-binding protein
KeywordsTRANSCRIPTION / DNA binding protein nucleosome
Function / homology
Function and homology information


transcription factor TFIIA complex / RNA polymerase II transcribes snRNA genes / Estrogen-dependent gene expression / 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 / positive regulation of transcription initiation by RNA polymerase II / RNA polymerase II core promoter sequence-specific DNA binding ...transcription factor TFIIA complex / RNA polymerase II transcribes snRNA genes / Estrogen-dependent gene expression / 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 / positive regulation of transcription initiation by RNA polymerase II / RNA polymerase II core promoter sequence-specific DNA binding / RNA polymerase II preinitiation complex assembly / TBP-class protein binding / transcription initiation at RNA polymerase II promoter / DNA-templated transcription initiation / transcription coregulator activity / structural constituent of chromatin / nucleosome / transcription by RNA polymerase II / protein heterodimerization activity / positive regulation of transcription by RNA polymerase II / DNA binding / nucleoplasm / nucleus / cytoplasm
Similarity search - Function
Transcription factor IIA, alpha/beta subunit / Transcription factor IIA, alpha/beta subunit / Transcription factor IIA, alpha/beta subunit / Transcription initiation factor IIA, gamma subunit / Transcription factor IIA, alpha-helical domain / Transcription factor IIA, beta-barrel / Transcription initiation factor IIA, gamma subunit, C-terminal / Transcription initiation factor IIA, gamma subunit, N-terminal / Transcription initiation factor IIA, gamma subunit, helical domain / Transcription initiation factor IIA, gamma subunit ...Transcription factor IIA, alpha/beta subunit / Transcription factor IIA, alpha/beta subunit / Transcription factor IIA, alpha/beta subunit / Transcription initiation factor IIA, gamma subunit / Transcription factor IIA, alpha-helical domain / Transcription factor IIA, beta-barrel / Transcription initiation factor IIA, gamma subunit, C-terminal / Transcription initiation factor IIA, gamma subunit, N-terminal / Transcription initiation factor IIA, gamma subunit, helical domain / Transcription initiation factor IIA, gamma subunit / TATA-box binding protein, eukaryotic / TATA-box binding protein / TATA-box binding protein, conserved site / Transcription factor TFIID (or TATA-binding protein, TBP) / Transcription factor TFIID repeat signature. / TBP domain superfamily / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Histone-fold
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / Transcription initiation factor IIA subunit 2 / SPT15 isoform 1 / Histone H2B 1.1 / Transcription initiation factor IIA large subunit / Histone H4 / Histone H3.2 / Histone H2A
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog)
synthetic construct (others)
Saccharomyces cerevisiae (brewer's yeast)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsWang, H. / Cramer, P.
Funding support Germany, European Union, 2items
OrganizationGrant numberCountry
German Research Foundation (DFG)SFB860, SPP2191, EXC 2067/1-390729940 Germany
European Research Council (ERC)882357European Union
CitationJournal: Proc Natl Acad Sci U S A / Year: 2021
Title: Structures and implications of TBP-nucleosome complexes.
Authors: Haibo Wang / Le Xiong / Patrick Cramer /
Abstract: The TATA box-binding protein (TBP) is highly conserved throughout eukaryotes and plays a central role in the assembly of the transcription preinitiation complex (PIC) at gene promoters. TBP binds and ...The TATA box-binding protein (TBP) is highly conserved throughout eukaryotes and plays a central role in the assembly of the transcription preinitiation complex (PIC) at gene promoters. TBP binds and bends DNA, and directs adjacent binding of the transcription factors TFIIA and TFIIB for PIC assembly. Here, we show that yeast TBP can bind to a nucleosome containing the Widom-601 sequence and that TBP-nucleosome binding is stabilized by TFIIA. We determine three cryo-electron microscopy (cryo-EM) structures of TBP-nucleosome complexes, two of them containing also TFIIA. TBP can bind to superhelical location (SHL) -6, which contains a TATA-like sequence, but also to SHL +2, which is GC-rich. Whereas binding to SHL -6 can occur in the absence of TFIIA, binding to SHL +2 is only observed in the presence of TFIIA and goes along with detachment of upstream terminal DNA from the histone octamer. TBP-nucleosome complexes are sterically incompatible with PIC assembly, explaining why a promoter nucleosome generally impairs transcription and must be moved before initiation can occur.
History
DepositionMay 9, 2021Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 28, 2021Provider: repository / Type: Initial release
Revision 1.1Aug 4, 2021Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.pdbx_database_id_PubMed / _citation.title

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Structure visualization

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Assembly

Deposited unit
A: Histone H3.2
B: Histone H4
C: Histone H2A
D: Histone H2B 1.1
E: Histone H3.2
F: Histone H4
G: Histone H2A
H: Histone H2B 1.1
I: DNA (145-MER)
J: DNA (145-MER)
K: TATA-binding protein
L: Transcription initiation factor IIA large subunit
M: Transcription initiation factor IIA subunit 2


Theoretical massNumber of molelcules
Total (without water)257,60013
Polymers257,60013
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area67270 Å2
ΔGint-447 kcal/mol
Surface area87710 Å2

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Components

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Protein , 5 types, 9 molecules AEBFCGDHK

#1: Protein Histone H3.2


Mass: 15303.930 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P84233
#2: Protein Histone H4 /


Mass: 11263.231 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P62799
#3: Protein Histone H2A /


Mass: 13978.241 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: hist1h2aj, LOC494591 / Production host: Escherichia coli (E. coli) / References: UniProt: Q6AZJ8
#4: Protein Histone H2B 1.1 / H2B1.1


Mass: 13524.752 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P02281
#7: Protein TATA-binding protein /


Mass: 27042.275 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: SPT15 / Production host: Escherichia coli (E. coli) / References: UniProt: G4XSG8

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DNA chain , 2 types, 2 molecules IJ

#5: DNA chain DNA (145-MER)


Mass: 44520.383 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)
#6: DNA chain DNA (145-MER)


Mass: 44991.660 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)

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Transcription initiation factor IIA ... , 2 types, 2 molecules LM

#8: Protein Transcription initiation factor IIA large subunit / TFIIA large subunit / TFIIA 32 kDa subunit


Mass: 19432.029 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: yeast Toa1 protein with the disorder region from residue 96 to 209 removed.
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Production host: Escherichia coli (E. coli) / References: UniProt: P32773
#9: Protein Transcription initiation factor IIA subunit 2


Mass: 13473.070 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: PACBIOSEQ_LOCUS3356, PACBIOSEQ_LOCUS3547, PACBIOSEQ_LOCUS3591, PACBIOSEQ_LOCUS3602, PACBIOSEQ_LOCUS3607, PACBIOSEQ_LOCUS3639, PACBIOSEQ_LOCUS3680, PACBIOSEQ_LOCUS3892, PACBIOSEQ_LOCUS3963
Production host: Escherichia coli (E. coli) / References: UniProt: A0A6A5PRZ0

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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

Component
IDNameTypeEntity IDParent-IDSource
1Nucleosome with TBP and TFIIACOMPLEXall0RECOMBINANT
2Histone octamerCOMPLEX#1-#41RECOMBINANT
3DNA (145-MER)COMPLEX#5-#61RECOMBINANT
4TBPCOMPLEX#71RECOMBINANT
5TFIIATranscription factor II ACOMPLEX#8-#91RECOMBINANT
Molecular weightValue: 0.23 MDa / Experimental value: YES
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Xenopus laevis (African clawed frog)8355
23synthetic construct (others)32630
34Saccharomyces cerevisiae (brewer's yeast)4932
45Saccharomyces cerevisiae (brewer's yeast)4932
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Escherichia coli (E. coli)562
23Escherichia coli (E. coli)562
34Escherichia coli (E. coli)562
45Escherichia coli (E. coli)562
Buffer solutionpH: 7.5
SpecimenConc.: 0.12 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / C2 aperture diameter: 70 µm
Image recordingElectron dose: 41.2 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.19.2_4158: / Classification: refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 85777 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00715952
ELECTRON MICROSCOPYf_angle_d0.82322788
ELECTRON MICROSCOPYf_dihedral_angle_d30.2334196
ELECTRON MICROSCOPYf_chiral_restr0.052606
ELECTRON MICROSCOPYf_plane_restr0.0061879

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