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Open data
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Basic information
| Entry | Database: PDB / ID: 7ad8 | ||||||
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| Title | Core TFIIH-XPA-DNA complex with modelled p62 subunit | ||||||
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Keywords | DNA BINDING PROTEIN / DNA repair / transcription factor | ||||||
| Function / homology | Function and homology informationnucleotide-excision repair factor 1 complex / nucleotide-excision repair involved in interstrand cross-link repair / nucleotide-excision repair, DNA damage recognition / MMXD complex / core TFIIH complex portion of holo TFIIH complex / Cytosolic iron-sulfur cluster assembly / positive regulation of mitotic recombination / hair cell differentiation / nucleotide-excision repair factor 3 complex / nucleotide-excision repair, preincision complex assembly ...nucleotide-excision repair factor 1 complex / nucleotide-excision repair involved in interstrand cross-link repair / nucleotide-excision repair, DNA damage recognition / MMXD complex / core TFIIH complex portion of holo TFIIH complex / Cytosolic iron-sulfur cluster assembly / positive regulation of mitotic recombination / hair cell differentiation / nucleotide-excision repair factor 3 complex / nucleotide-excision repair, preincision complex assembly / UV protection / CAK-ERCC2 complex / regulation of cyclin-dependent protein serine/threonine kinase activity / transcription factor TFIIH core complex / transcription factor TFIIH holo complex / G protein-coupled receptor internalization / DNA 5'-3' helicase / nuclear thyroid hormone receptor binding / transcription preinitiation complex / RNA Polymerase I Transcription Termination / embryonic organ development / UV-damage excision repair / transcription factor TFIID complex / RNA polymerase II general transcription initiation factor activity / regulation of mitotic cell cycle phase transition / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / 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 / ATPase activator activity / DNA topological change / RNA Polymerase I Transcription Initiation / response to UV / DNA 3'-5' helicase / protein localization to nucleus / 3'-5' DNA helicase activity / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / Formation of HIV elongation complex in the absence of HIV Tat / hormone-mediated signaling pathway / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / transcription by RNA polymerase I / RNA Polymerase II Pre-transcription Events / transcription-coupled nucleotide-excision repair / DNA helicase activity / TP53 Regulates Transcription of DNA Repair Genes / chromosome segregation / promoter-specific chromatin binding / RNA Polymerase I Promoter Escape / transcription initiation at RNA polymerase II promoter / nucleotide-excision repair / transcription elongation by RNA polymerase II / base-excision repair / NoRC negatively regulates rRNA expression / transcription by RNA polymerase II / intracellular protein localization / spindle / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Formation of Incision Complex in GG-NER / sequence-specific double-stranded DNA binding / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / 4 iron, 4 sulfur cluster binding / response to oxidative stress / double-stranded DNA binding / 5'-3' DNA helicase activity / damaged DNA binding / nuclear body / protein-macromolecule adaptor activity / nuclear speck / positive regulation of apoptotic process / protein domain specific binding / DNA repair / apoptotic process / chromatin binding / regulation of transcription by RNA polymerase II / nucleolus / regulation of DNA-templated transcription / positive regulation of DNA-templated transcription / protein homodimerization activity / ATP hydrolysis activity / DNA binding / nucleoplasm / zinc ion binding / ATP binding / metal ion binding / nucleus / cytoplasm Similarity search - Function | ||||||
| Biological species | Homo sapiens (human) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å | ||||||
Authors | Koelmel, W. / Kuper, J. / Kisker, C. | ||||||
| Funding support | Germany, 1items
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Citation | Journal: Nucleic Acids Res / Year: 2020Title: The TFIIH subunits p44/p62 act as a damage sensor during nucleotide excision repair. Authors: Jamie T Barnett / Jochen Kuper / Wolfgang Koelmel / Caroline Kisker / Neil M Kad / ![]() Abstract: Nucleotide excision repair (NER) in eukaryotes is orchestrated by the core form of the general transcription factor TFIIH, containing the helicases XPB, XPD and five 'structural' subunits, p62, p44, ...Nucleotide excision repair (NER) in eukaryotes is orchestrated by the core form of the general transcription factor TFIIH, containing the helicases XPB, XPD and five 'structural' subunits, p62, p44, p34, p52 and p8. Recent cryo-EM structures show that p62 makes extensive contacts with p44 and in part occupies XPD's DNA binding site. While p44 is known to regulate the helicase activity of XPD during NER, p62 is thought to be purely structural. Here, using helicase and adenosine triphosphatase assays we show that a complex containing p44 and p62 enhances XPD's affinity for dsDNA 3-fold over p44 alone. Remarkably, the relative affinity is further increased to 60-fold by dsDNA damage. Direct binding studies show this preference derives from p44/p62's high affinity (20 nM) for damaged ssDNA. Single molecule imaging of p44/p62 complexes without XPD reveals they bind to and randomly diffuse on DNA, however, in the presence of UV-induced DNA lesions these complexes stall. Combined with the analysis of a recent cryo-EM structure, we suggest that p44/p62 acts as a novel DNA-binding entity that enhances damage recognition in TFIIH. This revises our understanding of TFIIH and prompts investigation into the core subunits for an active role during DNA repair and/or transcription. | ||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 7ad8.cif.gz | 505.5 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb7ad8.ent.gz | 390.9 KB | Display | PDB format |
| PDBx/mmJSON format | 7ad8.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ad/7ad8 ftp://data.pdbj.org/pub/pdb/validation_reports/ad/7ad8 | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 4970M M: map data used to model this data |
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| Similar structure data |
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Assembly
| Deposited unit | ![]()
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Components
-DNA chain , 2 types, 2 molecules JK
| #1: DNA chain | Mass: 15036.663 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
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| #2: DNA chain | Mass: 15075.698 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
-Protein , 3 types, 3 molecules ABG
| #3: Protein | Mass: 89404.734 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: ERCC3, XPB, XPBC / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P19447, DNA helicase |
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| #5: Protein | Mass: 87021.078 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: ERCC2, XPD, XPDC / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P18074, DNA helicase |
| #9: Protein | Mass: 31422.053 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: XPA, XPAC / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P23025 |
-General transcription factor IIH subunit ... , 5 types, 5 molecules FEDCI
| #4: Protein | Mass: 8060.362 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GTF2H5, C6orf175, TTDA / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q6ZYL4 |
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| #6: Protein | Mass: 34416.008 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GTF2H3 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q13889 |
| #7: Protein | Mass: 44481.996 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GTF2H2, BTF2P44 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q13888 |
| #8: Protein | Mass: 52245.156 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GTF2H4 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q92759 |
| #10: Protein | Mass: 62116.492 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: GTF2H1, BTF2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P32780 |
-Non-polymers , 2 types, 7 molecules 


| #11: Chemical | ChemComp-SF4 / |
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| #12: Chemical | ChemComp-ZN / |
-Details
| Has ligand of interest | N |
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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
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| Molecular weight | Experimental value: NO | ||||||||||||||||||||||||
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| Buffer solution | pH: 7.5 | ||||||||||||||||||||||||
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
| Vitrification | Cryogen name: ETHANE |
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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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 41 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3D reconstruction | Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 227776 / Symmetry type: POINT |
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About Yorodumi




Homo sapiens (human)
Germany, 1items
Citation
UCSF Chimera








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Trichoplusia ni (cabbage looper)
