+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-23509 | |||||||||||||||||||||
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Title | NHEJ Short-range synaptic complex | |||||||||||||||||||||
Map data | Synaptic complex | |||||||||||||||||||||
Sample |
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Keywords | NHEJ / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex | |||||||||||||||||||||
Function / homology | Function and homology information DNA ligation involved in DNA recombination / T cell receptor V(D)J recombination / FHA domain binding / positive regulation of chromosome organization / positive regulation of ligase activity / pro-B cell differentiation / DNA ligase IV complex / positive regulation of lymphocyte differentiation / DNA ligation involved in DNA repair / small-subunit processome assembly ...DNA ligation involved in DNA recombination / T cell receptor V(D)J recombination / FHA domain binding / positive regulation of chromosome organization / positive regulation of ligase activity / pro-B cell differentiation / DNA ligase IV complex / positive regulation of lymphocyte differentiation / DNA ligation involved in DNA repair / small-subunit processome assembly / DNA ligase activity / Ku70:Ku80 complex / DNA-dependent protein kinase complex / DN2 thymocyte differentiation / immunoglobulin V(D)J recombination / negative regulation of t-circle formation / DNA end binding / DNA ligase (ATP) / DNA-dependent protein kinase-DNA ligase 4 complex / nonhomologous end joining complex / DNA ligase (ATP) activity / cellular response to X-ray / regulation of smooth muscle cell proliferation / single strand break repair / Cytosolic sensors of pathogen-associated DNA / nucleotide-excision repair, DNA gap filling / DNA ligation / V(D)J recombination / IRF3-mediated induction of type I IFN / nuclear telomere cap complex / double-strand break repair via classical nonhomologous end joining / isotype switching / protein localization to site of double-strand break / positive regulation of catalytic activity / U3 snoRNA binding / recombinational repair / regulation of telomere maintenance / protein localization to chromosome, telomeric region / cellular response to fatty acid / positive regulation of neurogenesis / cellular hyperosmotic salinity response / hematopoietic stem cell proliferation / response to ionizing radiation / cellular response to lithium ion / DNA biosynthetic process / telomeric DNA binding / 2-LTR circle formation / ligase activity / : / site of DNA damage / somatic stem cell population maintenance / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / response to X-ray / T cell differentiation / 5'-deoxyribose-5-phosphate lyase activity / hematopoietic stem cell differentiation / positive regulation of protein kinase activity / chromosome organization / ATP-dependent activity, acting on DNA / SUMOylation of DNA damage response and repair proteins / DNA polymerase binding / condensed chromosome / activation of innate immune response / enzyme activator activity / positive regulation of telomere maintenance via telomerase / DNA helicase activity / telomere maintenance / cyclin binding / neurogenesis / B cell differentiation / protein-DNA complex / stem cell proliferation / response to gamma radiation / cellular response to leukemia inhibitory factor / central nervous system development / small-subunit processome / cellular response to ionizing radiation / Nonhomologous End-Joining (NHEJ) / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / cellular response to gamma radiation / fibrillar center / double-strand break repair via nonhomologous end joining / establishment of integrated proviral latency / positive regulation of fibroblast proliferation / double-strand break repair / site of double-strand break / T cell differentiation in thymus / double-stranded DNA binding / scaffold protein binding / fibroblast proliferation / secretory granule lumen / in utero embryonic development / neuron apoptotic process / DNA recombination / negative regulation of neuron apoptotic process / transcription regulator complex / ficolin-1-rich granule lumen / cell population proliferation / damaged DNA binding / chromosome, telomeric region Similarity search - Function | |||||||||||||||||||||
Biological species | Homo sapiens (human) | |||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 8.4 Å | |||||||||||||||||||||
Authors | He Y / Chen S | |||||||||||||||||||||
Funding support | United States, 6 items
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Citation | Journal: Nature / Year: 2021 Title: Structural basis of long-range to short-range synaptic transition in NHEJ. Authors: Siyu Chen / Linda Lee / Tasmin Naila / Susan Fishbain / Annie Wang / Alan E Tomkinson / Susan P Lees-Miller / Yuan He / Abstract: DNA double-strand breaks (DSBs) are a highly cytotoxic form of DNA damage and the incorrect repair of DSBs is linked to carcinogenesis. The conserved error-prone non-homologous end joining (NHEJ) ...DNA double-strand breaks (DSBs) are a highly cytotoxic form of DNA damage and the incorrect repair of DSBs is linked to carcinogenesis. The conserved error-prone non-homologous end joining (NHEJ) pathway has a key role in determining the effects of DSB-inducing agents that are used to treat cancer as well as the generation of the diversity in antibodies and T cell receptors. Here we applied single-particle cryo-electron microscopy to visualize two key DNA-protein complexes that are formed by human NHEJ factors. The Ku70/80 heterodimer (Ku), the catalytic subunit of the DNA-dependent protein kinase (DNA-PKcs), DNA ligase IV (LigIV), XRCC4 and XLF form a long-range synaptic complex, in which the DNA ends are held approximately 115 Å apart. Two DNA end-bound subcomplexes comprising Ku and DNA-PKcs are linked by interactions between the DNA-PKcs subunits and a scaffold comprising LigIV, XRCC4, XLF, XRCC4 and LigIV. The relative orientation of the DNA-PKcs molecules suggests a mechanism for autophosphorylation in trans, which leads to the dissociation of DNA-PKcs and the transition into the short-range synaptic complex. Within this complex, the Ku-bound DNA ends are aligned for processing and ligation by the XLF-anchored scaffold, and a single catalytic domain of LigIV is stably associated with a nick between the two Ku molecules, which suggests that the joining of both strands of a DSB involves both LigIV molecules. | |||||||||||||||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_23509.map.gz | 23.2 MB | EMDB map data format | |
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Header (meta data) | emd-23509-v30.xml emd-23509.xml | 26.8 KB 26.8 KB | Display Display | EMDB header |
Images | emd_23509.png | 104.8 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-23509 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-23509 | HTTPS FTP |
-Validation report
Summary document | emd_23509_validation.pdf.gz | 392.4 KB | Display | EMDB validaton report |
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Full document | emd_23509_full_validation.pdf.gz | 392 KB | Display | |
Data in XML | emd_23509_validation.xml.gz | 5.6 KB | Display | |
Data in CIF | emd_23509_validation.cif.gz | 6.4 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-23509 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-23509 | HTTPS FTP |
-Related structure data
Related structure data | 7lsyMC 7lt3C M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_23509.map.gz / Format: CCP4 / Size: 27 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Synaptic complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.66 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
+Entire : Short-range synaptic complex of NHEJ
+Supramolecule #1: Short-range synaptic complex of NHEJ
+Macromolecule #1: X-ray repair cross-complementing protein 6
+Macromolecule #2: X-ray repair cross-complementing protein 5
+Macromolecule #5: DNA repair protein XRCC4
+Macromolecule #6: Non-homologous end-joining factor 1
+Macromolecule #10: DNA ligase 4
+Macromolecule #3: DNA (26-MER)
+Macromolecule #4: DNA (5'-D(P*GP*TP*TP*CP*TP*TP*AP*GP*TP*AP*TP*AP*TP*A)-3')
+Macromolecule #7: DNA (5'-D(P*TP*AP*TP*AP*TP*AP*CP*TP*AP*AP*GP*AP*AP*C)-3')
+Macromolecule #8: DNA (26-MER)
+Macromolecule #9: DNA (5'-D(P*CP*AP*AP*TP*GP*AP*AP*AP*CP*GP*GP*AP*AP*CP*AP*GP*TP*CP...
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.9 Component:
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Grid | Model: Quantifoil R3.5/1 / Material: COPPER / Mesh: 200 / Support film - Material: GRAPHENE OXIDE / Support film - topology: CONTINUOUS / Support film - Film thickness: 200 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 10 sec. / Pretreatment - Atmosphere: AIR / Pretreatment - Pressure: 101.325 kPa | ||||||||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Digitization - Dimensions - Width: 11520 pixel / Digitization - Dimensions - Height: 8184 pixel / Number grids imaged: 2 / Number real images: 32723 / Average exposure time: 0.0426 sec. / Average electron dose: 46.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: DARK FIELD / Cs: 2.7 mm / Nominal defocus max: 4.0 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 30000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
+Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: RIGID BODY FIT / Target criteria: Correlation coefficient |
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Output model | PDB-7lsy: |