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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 / Ku70:Ku80 complex / T cell receptor V(D)J recombination / negative regulation of t-circle formation / pro-B cell differentiation / DNA end binding / DNA-dependent protein kinase activity / small-subunit processome assembly / positive regulation of lymphocyte differentiation / histone H2AXS139 kinase activity ...positive regulation of platelet formation / Ku70:Ku80 complex / T cell receptor V(D)J recombination / negative regulation of t-circle formation / pro-B cell differentiation / DNA end binding / DNA-dependent protein kinase activity / small-subunit processome assembly / positive regulation of lymphocyte differentiation / histone H2AXS139 kinase activity / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / immunoglobulin V(D)J recombination / nonhomologous end joining complex / immature B cell differentiation / regulation of smooth muscle cell proliferation / cellular response to X-ray / double-strand break repair via alternative nonhomologous end joining / regulation of epithelial cell proliferation / double-strand break repair via classical nonhomologous end joining / nuclear telomere cap complex / Cytosolic sensors of pathogen-associated DNA / telomere capping / IRF3-mediated induction of type I IFN / regulation of hematopoietic stem cell differentiation / recombinational repair / positive regulation of neurogenesis / regulation of telomere maintenance / U3 snoRNA binding / protein localization to chromosome, telomeric region / T cell lineage commitment / maturation of 5.8S rRNA / cellular hyperosmotic salinity response / positive regulation of double-strand break repair via nonhomologous end joining / negative regulation of cGAS/STING signaling pathway / B cell lineage commitment / 2-LTR circle formation / hematopoietic stem cell proliferation / telomeric DNA binding / negative regulation of protein phosphorylation / positive regulation of protein kinase activity / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / site of DNA damage / peptidyl-threonine phosphorylation / 5'-deoxyribose-5-phosphate lyase activity / hematopoietic stem cell differentiation / ATP-dependent activity, acting on DNA / somitogenesis / ectopic germ cell programmed cell death / telomere maintenance via telomerase / mitotic G1 DNA damage checkpoint signaling / neurogenesis / activation of innate immune response / DNA helicase activity / telomere maintenance / positive regulation of erythrocyte differentiation / cyclin binding / positive regulation of translation / cellular response to leukemia inhibitory factor / response to gamma radiation / Nonhomologous End-Joining (NHEJ) / small-subunit processome / enzyme activator activity / protein-DNA complex / cellular response to gamma radiation / peptidyl-serine phosphorylation / brain development / regulation of circadian rhythm / protein destabilization / protein modification process / double-strand break repair via nonhomologous end joining / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / cellular response to insulin stimulus / intrinsic apoptotic signaling pathway in response to DNA damage / T cell differentiation in thymus / rhythmic process / double-strand break repair / E3 ubiquitin ligases ubiquitinate target proteins / heart development / double-stranded DNA binding / scaffold protein binding / secretory granule lumen / DNA recombination / transcription regulator complex / ficolin-1-rich granule lumen / RNA polymerase II-specific DNA-binding transcription factor binding / damaged DNA binding / chromosome, telomeric region / protein phosphorylation / protein kinase activity / non-specific serine/threonine protein kinase / transcription cis-regulatory region binding / positive regulation of apoptotic process / ribonucleoprotein complex / protein domain specific binding / innate immune response / protein serine kinase activity / negative regulation of DNA-templated transcription / protein serine/threonine kinase activity / DNA damage response 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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Homo sapiens (human)
United Kingdom, 1items
Citation


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microscopy

