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Open data
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Basic information
| Entry | Database: PDB / ID: 7z88 | ||||||
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| Title | DNA-PK in the intermediate state | ||||||
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Keywords | DNA BINDING PROTEIN / DNA-dependent protein kinase | ||||||
| Function / homology | Function and homology informationpositive regulation of platelet formation / DNA-dependent protein kinase complex / Ku70:Ku80 complex / negative regulation of t-circle formation / DNA-dependent protein kinase activity / DNA end binding / small-subunit processome assembly / positive regulation of lymphocyte differentiation / histone H2AXS139 kinase activity / DNA-dependent protein kinase-DNA ligase 4 complex ...positive regulation of platelet formation / DNA-dependent protein kinase complex / Ku70:Ku80 complex / negative regulation of t-circle formation / DNA-dependent protein kinase activity / DNA end binding / small-subunit processome assembly / positive regulation of lymphocyte differentiation / histone H2AXS139 kinase activity / DNA-dependent protein kinase-DNA ligase 4 complex / immunoglobulin V(D)J recombination / nonhomologous end joining complex / cellular response to X-ray / regulation of epithelial cell proliferation / regulation of smooth muscle cell proliferation / double-strand break repair via classical nonhomologous end joining / double-strand break repair via alternative nonhomologous end joining / Cytosolic sensors of pathogen-associated DNA / nuclear telomere cap complex / telomere capping / IRF3-mediated induction of type I IFN / regulation of hematopoietic stem cell differentiation / U3 snoRNA binding / regulation of telomere maintenance / recombinational repair / cellular hyperosmotic salinity response / maturation of 5.8S rRNA / protein localization to chromosome, telomeric region / positive regulation of double-strand break repair via nonhomologous end joining / negative regulation of cGAS/STING signaling pathway / 2-LTR circle formation / peptidyl-threonine phosphorylation / telomeric repeat DNA binding / negative regulation of protein phosphorylation / DNA 3'-5' helicase / 5'-deoxyribose-5-phosphate lyase activity / 3'-5' DNA helicase activity / ATP-dependent activity, acting on DNA / telomere maintenance via telomerase / mitotic G1 DNA damage checkpoint signaling / positive regulation of erythrocyte differentiation / activation of innate immune response / telomere maintenance / cyclin binding / DNA helicase activity / protein modification process / DNA-(apurinic or apyrimidinic site) lyase / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / site of DNA damage / positive regulation of translation / peptidyl-serine phosphorylation / intrinsic apoptotic signaling pathway in response to DNA damage / small-subunit processome / Nonhomologous End-Joining (NHEJ) / cellular response to gamma radiation / protein-DNA complex / regulation of circadian rhythm / double-strand break repair via nonhomologous end joining / enzyme activator activity / cellular response to insulin stimulus / rhythmic process / double-strand break repair / E3 ubiquitin ligases ubiquitinate target proteins / transcription regulator complex / scaffold protein binding / double-stranded DNA binding / DNA recombination / secretory granule lumen / ficolin-1-rich granule lumen / damaged DNA binding / RNA polymerase II-specific DNA-binding transcription factor binding / protein phosphorylation / protein kinase activity / chromosome, telomeric region / non-specific serine/threonine protein kinase / transcription cis-regulatory region binding / ribonucleoprotein complex / protein domain specific binding / innate immune response / protein serine kinase activity / negative regulation of DNA-templated transcription / protein serine/threonine kinase activity / ubiquitin protein ligase binding / Neutrophil degranulation / DNA damage response / nucleolus / negative regulation of apoptotic process / positive regulation of DNA-templated transcription / chromatin / protein-containing complex binding / enzyme binding / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / protein-containing complex / DNA-templated transcription / DNA binding / RNA binding / extracellular region / nucleoplasm / ATP binding Similarity search - Function | ||||||
| Biological species | Homo sapiens (human) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.33 Å | ||||||
Authors | Liang, S. / Blundell, T.L. | ||||||
| Funding support | United Kingdom, 1items
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Citation | Journal: Nat Struct Mol Biol / Year: 2023Title: Human DNA-dependent protein kinase activation mechanism. Authors: Shikang Liang / Tom L Blundell / ![]() Abstract: DNA-dependent protein kinase (DNA-PK), a multicomponent complex including the DNA-PK catalytic subunit and Ku70/80 heterodimer together with DNA, is central to human DNA damage response and repair. ...DNA-dependent protein kinase (DNA-PK), a multicomponent complex including the DNA-PK catalytic subunit and Ku70/80 heterodimer together with DNA, is central to human DNA damage response and repair. Using a DNA-PK-selective inhibitor (M3814), we identified from one dataset two cryo-EM structures of the human DNA-PK complex in different states, the intermediate state and the active state. Here we show that activation of the kinase is regulated through conformational changes caused by the binding ligand and the string region (residues 802-846) of the DNA-PK catalytic subunit, particularly the helix-hairpin-helix motif (residues 816-836) that interacts with DNA. These observations demonstrate the regulatory role of the ligand and explain why DNA-PK is DNA dependent. Cooperation and coordination among binding partners, disordered flexible regions and mechanically flexible HEAT repeats modulate the activation of the kinase. Together with previous findings, these results provide a better molecular understanding of DNA-PK catalysis. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 7z88.cif.gz | 873.1 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb7z88.ent.gz | 694.3 KB | Display | PDB format |
| PDBx/mmJSON format | 7z88.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/z8/7z88 ftp://data.pdbj.org/pub/pdb/validation_reports/z8/7z88 | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 14546MC ![]() 7z87C M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-X-ray repair cross-complementing protein ... , 2 types, 2 molecules BC
| #2: Protein | Mass: 69945.039 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: XRCC6, G22P1 / Production host: ![]() References: UniProt: P12956, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement, Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases |
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| #3: Protein | Mass: 82812.438 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: XRCC5, G22P2 / Production host: ![]() References: UniProt: P13010, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement |
-DNA chain , 2 types, 2 molecules DE
| #4: DNA chain | Mass: 7900.079 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
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| #5: DNA chain | Mass: 8078.203 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
-Protein / Non-polymers , 2 types, 2 molecules A

| #1: Protein | Mass: 469673.219 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: P78527, non-specific serine/threonine protein kinase |
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| #6: Chemical | ChemComp-1IX / (~{ |
-Details
| Has ligand of interest | Y |
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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
| Component | Name: Human DNA-dependent protein kinase / Type: COMPLEX / Entity ID: #1-#5 / Source: NATURAL |
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| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.6 |
| 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 / Nominal defocus max: 2300 nm / Nominal defocus min: 1100 nm |
| Image recording | Electron dose: 47.22 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3D reconstruction | Resolution: 3.33 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 190498 / Symmetry type: POINT |
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About Yorodumi




Homo sapiens (human)
United Kingdom, 1items
Citation


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microscopy

