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Open data
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Basic information
Entry | Database: PDB / ID: 7oh9 | |||||||||
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Title | Nucleosome with TBP and TFIIA bound at SHL -6 | |||||||||
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![]() | TRANSCRIPTION / DNA binding protein nucleosome | |||||||||
Function / homology | ![]() transcription factor TFIIA complex / RNA polymerase II transcribes snRNA 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 polymerase II general transcription initiation factor activity / Estrogen-dependent gene expression / positive regulation of transcription initiation by RNA polymerase II ...transcription factor TFIIA complex / RNA polymerase II transcribes snRNA 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 polymerase II general transcription initiation factor activity / Estrogen-dependent gene expression / positive regulation of transcription initiation by RNA polymerase II / RNA polymerase II core promoter sequence-specific DNA binding / RNA polymerase II preinitiation complex assembly / transcription coregulator activity / TBP-class protein binding / DNA-templated transcription initiation / transcription initiation at RNA polymerase II promoter / structural constituent of chromatin / nucleosome / nucleosome assembly / transcription by RNA polymerase II / protein heterodimerization activity / positive regulation of transcription by RNA polymerase II / DNA binding / nucleoplasm / nucleus / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() synthetic construct (others) ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | |||||||||
![]() | Wang, H. / Cramer, P. | |||||||||
Funding support | ![]()
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![]() | ![]() 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 |
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Structure visualization
Movie |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 357 KB | Display | ![]() |
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PDB format | ![]() | 270.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 856.9 KB | Display | ![]() |
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Full document | ![]() | 868.6 KB | Display | |
Data in XML | ![]() | 41.6 KB | Display | |
Data in CIF | ![]() | 66.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 12897MC ![]() 7ohaC ![]() 7ohbC ![]() 7ohcC 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
-Protein , 5 types, 9 molecules AEBFCGDHK
#1: Protein | Mass: 15303.930 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 11263.231 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #3: Protein | Mass: 13978.241 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #4: Protein | Mass: 13524.752 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #7: Protein | | Mass: 27042.275 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: SPT15 / Production host: ![]() ![]() |
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-DNA chain , 2 types, 2 molecules IJ
#5: DNA chain | Mass: 44520.383 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) synthetic construct (others) / Production host: ![]() ![]() |
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#6: DNA chain | Mass: 44991.660 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) synthetic construct (others) / Production host: ![]() ![]() |
-Transcription initiation factor IIA ... , 2 types, 2 molecules LM
#8: Protein | 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.) ![]() ![]() Production host: ![]() ![]() |
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#9: Protein | Mass: 13473.070 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: PACBIOSEQ_LOCUS3356, PACBIOSEQ_LOCUS3547, PACBIOSEQ_LOCUS3591, PACBIOSEQ_LOCUS3602, PACBIOSEQ_LOCUS3607, PACBIOSEQ_LOCUS3639, PACBIOSEQ_LOCUS3680, PACBIOSEQ_LOCUS3892, PACBIOSEQ_LOCUS3963 Production host: ![]() ![]() |
-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
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Molecular weight | Value: 0.23 MDa / Experimental value: YES | ||||||||||||||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 7.5 | ||||||||||||||||||||||||||||||||||||
Specimen | Conc.: 0.12 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||||||||
Vitrification | Instrument: 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 |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Cs: 2.7 mm / C2 aperture diameter: 70 µm |
Image recording | Electron dose: 41.2 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.19.2_4158: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 85777 / Symmetry type: POINT | ||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | ||||||||||||||||||||||||
Refine LS restraints |
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