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Open data
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Basic information
| Entry | Database: PDB / ID: 7k10 | |||||||||||||||||||||||||||||||||
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| Title | CryoEM structure of activated-form FATKIN domain of DNA-PK | |||||||||||||||||||||||||||||||||
Components | DNA-dependent protein kinase catalytic subunit | |||||||||||||||||||||||||||||||||
Keywords | DNA BINDING PROTEIN / NHEJ / PIKK kinase / V(D)J recombination | |||||||||||||||||||||||||||||||||
| Function / homology | Function and homology informationpositive regulation of platelet formation / T cell receptor V(D)J recombination / pro-B cell differentiation / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase activity / DNA-dependent protein kinase complex / histone H2AXS139 kinase activity / DNA-dependent protein kinase-DNA ligase 4 complex / immunoglobulin V(D)J recombination ...positive regulation of platelet formation / T cell receptor V(D)J recombination / pro-B cell differentiation / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase activity / DNA-dependent protein kinase complex / histone H2AXS139 kinase activity / 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 / double-strand break repair via alternative nonhomologous end joining / regulation of epithelial cell proliferation / telomere capping / Cytosolic sensors of pathogen-associated DNA / IRF3-mediated induction of type I IFN / regulation of hematopoietic stem cell differentiation / U3 snoRNA binding / maturation of 5.8S rRNA / T cell lineage commitment / negative regulation of cGAS/STING signaling pathway / positive regulation of double-strand break repair via nonhomologous end joining / B cell lineage commitment / negative regulation of protein phosphorylation / peptidyl-threonine phosphorylation / ectopic germ cell programmed cell death / somitogenesis / mitotic G1 DNA damage checkpoint signaling / telomere maintenance / activation of innate immune response / positive regulation of erythrocyte differentiation / positive regulation of translation / response to gamma radiation / small-subunit processome / Nonhomologous End-Joining (NHEJ) / protein-DNA complex / regulation of circadian rhythm / brain development / protein destabilization / peptidyl-serine phosphorylation / double-strand break repair via nonhomologous end joining / protein modification process / cellular response to insulin stimulus / intrinsic apoptotic signaling pathway in response to DNA damage / rhythmic process / T cell differentiation in thymus / double-strand break repair / E3 ubiquitin ligases ubiquitinate target proteins / heart development / double-stranded DNA binding / transcription regulator complex / RNA polymerase II-specific DNA-binding transcription factor binding / chromosome, telomeric region / protein phosphorylation / non-specific serine/threonine protein kinase / protein kinase activity / positive regulation of apoptotic process / protein domain specific binding / innate immune response / protein serine kinase activity / protein serine/threonine kinase activity / DNA damage response / negative regulation of apoptotic process / chromatin / nucleolus / enzyme binding / positive regulation of transcription by RNA polymerase II / protein-containing complex / RNA binding / nucleoplasm / ATP binding / nucleus / membrane / cytosol Similarity search - Function | |||||||||||||||||||||||||||||||||
| Biological species | Homo sapiens (human) | |||||||||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||||||||||||||||||||||||||
Authors | Chen, X. / Gellert, M. / Yang, W. | |||||||||||||||||||||||||||||||||
| Funding support | United States, 1items
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Citation | Journal: Mol Cell / Year: 2021Title: Structure of an activated DNA-PK and its implications for NHEJ. Authors: Xuemin Chen / Xiang Xu / Yun Chen / Joyce C Cheung / Huaibin Wang / Jiansen Jiang / Natalia de Val / Tara Fox / Martin Gellert / Wei Yang / ![]() Abstract: DNA-dependent protein kinase (DNA-PK), like all phosphatidylinositol 3-kinase-related kinases (PIKKs), is composed of conserved FAT and kinase domains (FATKINs) along with solenoid structures made of ...DNA-dependent protein kinase (DNA-PK), like all phosphatidylinositol 3-kinase-related kinases (PIKKs), is composed of conserved FAT and kinase domains (FATKINs) along with solenoid structures made of HEAT repeats. These kinases are activated in response to cellular stress signals, but the mechanisms governing activation and regulation remain unresolved. For DNA-PK, all existing structures represent inactive states with resolution limited to 4.3 Å at best. Here, we report the cryoelectron microscopy (cryo-EM) structures of DNA-PKcs (DNA-PK catalytic subunit) bound to a DNA end or complexed with Ku70/80 and DNA in both inactive and activated forms at resolutions of 3.7 Å overall and 3.2 Å for FATKINs. These structures reveal the sequential transition of DNA-PK from inactive to activated forms. Most notably, activation of the kinase involves previously unknown stretching and twisting within individual solenoid segments and loosens DNA-end binding. This unprecedented structural plasticity of helical repeats may be a general regulatory mechanism of HEAT-repeat proteins. | |||||||||||||||||||||||||||||||||
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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 | 7k10.cif.gz | 288.6 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb7k10.ent.gz | 197.7 KB | Display | PDB format |
| PDBx/mmJSON format | 7k10.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 7k10_validation.pdf.gz | 690.2 KB | Display | wwPDB validaton report |
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| Full document | 7k10_full_validation.pdf.gz | 697.8 KB | Display | |
| Data in XML | 7k10_validation.xml.gz | 36.9 KB | Display | |
| Data in CIF | 7k10_validation.cif.gz | 57.5 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/k1/7k10 ftp://data.pdbj.org/pub/pdb/validation_reports/k1/7k10 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 22619MC ![]() 7k0yC ![]() 7k11C ![]() 7k17C ![]() 7k19C ![]() 7k1bC ![]() 7k1jC ![]() 7k1kC ![]() 7k1nC C: citing same article ( 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
| #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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| Has protein modification | N |
-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: FATKIN 2 / Type: COMPLEX / Entity ID: all / Source: NATURAL |
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| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.9 |
| 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: 45 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
| Software | Name: PHENIX / Version: 1.14_3260: / Classification: refinement | ||||||||||||||||||||||||
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| EM software | Name: PHENIX / Category: model refinement | ||||||||||||||||||||||||
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 254646 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi




Homo sapiens (human)
United States, 1items
Citation
UCSF Chimera























PDBj





