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Open data
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Basic information
Entry | Database: PDB / ID: 8bot | ||||||
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Title | Cryo-EM structure of NHEJ supercomplex(trimer) | ||||||
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![]() | DNA BINDING PROTEIN / NHEJ / DNA-PK / DNA-PKcs / Ku70 / Ku80 / XLF / DNA repair | ||||||
Function / homology | ![]() : / FHA domain binding / positive regulation of chromosome organization / positive regulation of ligase activity / DNA ligase IV complex / : / DNA ligase activity / Ku70:Ku80 complex / DN2 thymocyte differentiation / positive regulation of platelet formation ...: / FHA domain binding / positive regulation of chromosome organization / positive regulation of ligase activity / DNA ligase IV complex / : / DNA ligase activity / Ku70:Ku80 complex / DN2 thymocyte differentiation / positive regulation of platelet formation / negative regulation of t-circle formation / DNA ligase (ATP) / DNA end binding / T cell receptor V(D)J recombination / pro-B cell differentiation / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA ligase (ATP) activity / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / immature B cell differentiation / cellular response to X-ray / nonhomologous end joining complex / immunoglobulin V(D)J recombination / nucleotide-excision repair, DNA gap filling / : / regulation of smooth muscle cell proliferation / single strand break repair / V(D)J recombination / nuclear telomere cap complex / double-strand break repair via alternative nonhomologous end joining / double-strand break repair via classical nonhomologous end joining / Cytosolic sensors of pathogen-associated DNA / protein localization to site of double-strand break / isotype switching / IRF3-mediated induction of type I IFN / telomere capping / regulation of epithelial cell proliferation / recombinational repair / regulation of hematopoietic stem cell differentiation / regulation of telomere maintenance / U3 snoRNA binding / protein localization to chromosome, telomeric region / cellular response to fatty acid / cellular hyperosmotic salinity response / positive regulation of neurogenesis / T cell lineage commitment / maturation of 5.8S rRNA / response to ionizing radiation / cellular response to lithium ion / DNA biosynthetic process / telomeric DNA binding / negative regulation of cGAS/STING signaling pathway / positive regulation of double-strand break repair via nonhomologous end joining / B cell lineage commitment / 2-LTR circle formation / hematopoietic stem cell proliferation / ligase activity / site of DNA damage / somatic stem cell population maintenance / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / T cell differentiation / 5'-deoxyribose-5-phosphate lyase activity / hematopoietic stem cell differentiation / ATP-dependent activity, acting on DNA / positive regulation of protein kinase activity / response to X-ray / chromosome organization / ectopic germ cell programmed cell death / telomere maintenance via telomerase / somitogenesis / SUMOylation of DNA damage response and repair proteins / negative regulation of protein phosphorylation / DNA helicase activity / DNA polymerase binding / condensed chromosome / mitotic G1 DNA damage checkpoint signaling / telomere maintenance / activation of innate immune response / B cell differentiation / enzyme activator activity / cyclin binding / cellular response to leukemia inhibitory factor / positive regulation of erythrocyte differentiation / stem cell proliferation / central nervous system development / positive regulation of translation / neurogenesis / cellular response to ionizing radiation / response to gamma radiation / small-subunit processome / peptidyl-threonine phosphorylation / Nonhomologous End-Joining (NHEJ) / protein-DNA complex / cellular response to gamma radiation / regulation of circadian rhythm / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / protein destabilization / brain development / protein modification process Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 7.76 Å | ||||||
![]() | Hardwick, S.W. / Chaplin, A.K. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM structure of a DNA-PK trimer: higher order oligomerisation in NHEJ. Authors: Steven W Hardwick / Antonia Kefala Stavridi / Dimitri Y Chirgadze / Taiana Maia De Oliveira / Jean-Baptiste Charbonnier / Virginie Ropars / Katheryn Meek / Tom L Blundell / Amanda K Chaplin / ![]() ![]() ![]() Abstract: The ability of humans to maintain the integrity of the genome is imperative for cellular survival. DNA double-strand breaks (DSBs) are considered the most critical type of DNA lesion, which can ...The ability of humans to maintain the integrity of the genome is imperative for cellular survival. DNA double-strand breaks (DSBs) are considered the most critical type of DNA lesion, which can ultimately lead to diseases including cancer. Non-homologous end joining (NHEJ) is one of two core mechanisms utilized to repair DSBs. DNA-PK is a key component in this process and has recently been shown to form alternate long-range synaptic dimers. This has led to the proposal that these complexes can be formed before transitioning to a short-range synaptic complex. Here we present cryo-EM data representing an NHEJ supercomplex consisting of a trimer of DNA-PK in complex with XLF, XRCC4, and DNA Ligase IV. This trimer represents a complex of both long-range synaptic dimers. We discuss the potential role of the trimeric structure, and possible higher order oligomers, as structural intermediates in the NHEJ mechanism, or as functional DNA repair centers. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 2.8 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.9 MB | Display | ![]() |
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Full document | ![]() | 2.6 MB | Display | |
Data in XML | ![]() | 482.8 KB | Display | |
Data in CIF | ![]() | 734.3 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 16145MC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 4 types, 13 molecules KLNOMPQRXYFAS
#1: Protein | Mass: 38337.703 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 104124.953 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #3: Protein | Mass: 33372.234 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #4: Protein | Mass: 469673.219 Da / Num. of mol.: 3 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P78527, non-specific serine/threonine protein kinase |
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-X-ray repair cross-complementing protein ... , 2 types, 6 molecules GBTHCU
#5: Protein | Mass: 69945.039 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Production host: Insect cell expression vector pTIE1 (others) 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 #6: Protein | Mass: 82812.438 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Production host: Insect cell expression vector pTIE1 (others) References: UniProt: P13010, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement |
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-DNA chain , 4 types, 6 molecules IVJWDE
#7: DNA chain | Mass: 8619.629 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) ![]() #8: DNA chain | Mass: 8350.414 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) ![]() #9: DNA chain | | Mass: 7367.843 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() #10: DNA chain | | Mass: 7402.821 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
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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: NHEJ supercomplex trimer / Type: ORGANELLE OR CELLULAR COMPONENT Details: Trimeric complex of DNA-PK, DNA ligase 4, XRCC4, XLF Entity ID: all / Source: NATURAL |
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Molecular weight | Value: 2.1 MDa / Experimental value: NO |
Source (natural) | Organism: ![]() |
Buffer solution | pH: 8 |
Specimen | Conc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid type: Quantifoil R1.2/1.3 |
Vitrification | Instrument: FEI VITROBOT MARK IV / 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: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 46.8 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV |
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Processing
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 749185 | ||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 7.76 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 9114 / Symmetry type: POINT | ||||||||||||||||||||||||||||||
Atomic model building | B value: 639 | ||||||||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 636.65 Å2 | ||||||||||||||||||||||||||||||
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