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- EMDB-45807: The gap-filling complex with Pol mu engaged in the NHEJ pathway -
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Open data
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Basic information
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Title | The gap-filling complex with Pol mu engaged in the NHEJ pathway | |||||||||
![]() | composite map for NHEJ gap-filling complex | |||||||||
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![]() | NHEJ / DNA gap / fill-in synthesis / ligation / XLF / PAXX / Polymerase mu / DNA repair / Ligase IV / LIGASE-TRANSFERASE-DNA complex | |||||||||
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 / negative regulation of t-circle formation / DNA ligase (ATP) / T cell receptor V(D)J recombination ...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 / negative regulation of t-circle formation / DNA ligase (ATP) / T cell receptor V(D)J recombination / DNA end binding / 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 / 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 / cellular response to X-ray / nuclear telomere cap complex / V(D)J recombination / double-strand break repair via classical nonhomologous end joining / protein localization to site of double-strand break / isotype switching / Cytosolic sensors of pathogen-associated DNA / IRF3-mediated induction of type I IFN / positive regulation of neurogenesis / regulation of telomere maintenance / recombinational repair / U3 snoRNA binding / protein localization to chromosome, telomeric region / cellular hyperosmotic salinity response / DNA biosynthetic process / response to ionizing radiation / cellular response to lithium ion / telomeric DNA binding / 2-LTR circle formation / hematopoietic stem cell proliferation / ligase activity / positive regulation of protein kinase activity / site of DNA damage / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / T cell differentiation / somatic stem cell population maintenance / 5'-deoxyribose-5-phosphate lyase activity / response to X-ray / hematopoietic stem cell differentiation / ATP-dependent activity, acting on DNA / chromosome organization / telomere maintenance via telomerase / SUMOylation of DNA damage response and repair proteins / condensed chromosome / DNA polymerase binding / neurogenesis / telomere maintenance / DNA helicase activity / activation of innate immune response / B cell differentiation / cyclin binding / cellular response to leukemia inhibitory factor / central nervous system development / stem cell proliferation / cellular response to ionizing radiation / response to gamma radiation / Nonhomologous End-Joining (NHEJ) / small-subunit processome / enzyme activator activity / cellular response to gamma radiation / protein-DNA complex / base-excision repair / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / double-strand break repair via nonhomologous end joining / establishment of integrated proviral latency / fibrillar center / positive regulation of fibroblast proliferation / double-strand break repair / T cell differentiation in thymus / site of double-strand break / double-stranded DNA binding / fibroblast proliferation / scaffold protein binding / secretory granule lumen / neuron apoptotic process / DNA recombination / molecular adaptor activity / transcription regulator complex / in utero embryonic development / ficolin-1-rich granule lumen / negative regulation of neuron apoptotic process / DNA-directed DNA polymerase / damaged DNA binding / DNA-directed DNA polymerase activity / chromosome, telomeric region / cell population proliferation / transcription cis-regulatory region binding / ribonucleoprotein complex Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.8 Å | |||||||||
![]() | Li J / Liu L / Gellert M / Yang W | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Dynamic assemblies and coordinated reactions of non-homologous end joining. Authors: Lan Liu / Jun Li / Metztli Cisneros-Aguirre / Arianna Merkell / Jeremy M Stark / Martin Gellert / Wei Yang / ![]() Abstract: Non-homologous end joining (NHEJ) is the main repair pathway of double-strand DNA breaks in higher eukaryotes. Here we report reconstitution of the final steps of NHEJ and structures of DNA ...Non-homologous end joining (NHEJ) is the main repair pathway of double-strand DNA breaks in higher eukaryotes. Here we report reconstitution of the final steps of NHEJ and structures of DNA polymerase μ and ligase IV (LIG4) engaged in gap filling and end joining. These reactions take place in a flexible ω-shaped framework composed of XRCC4 and XLF. Two broken DNA ends, each encircled by Ku70-Ku80 internally, are docked onto the ω frame, mediated by LIG4. DNA polymerase and ligase attached to each ω arm repair only one broken strand of a defined polarity; the final steps of NHEJ requires coordination and toggling of a pair of such enzymes. The facilitators XLF and PAXX additively stimulate NHEJ reactions. As DNA-end sensor and protector, LIG4 replaces DNA-PKcs for end joining and bridges the two DNA ends for polymerase to fill remaining gaps. These assemblies present new targets for NHEJ inhibition to enhance efficacy of radiotherapy and accuracy of gene editing. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 242.1 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 40.2 KB 40.2 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 18.2 KB | Display | ![]() |
Images | ![]() | 127.6 KB | ||
Masks | ![]() | 512 MB | ![]() | |
Filedesc metadata | ![]() | 9.9 KB | ||
Others | ![]() ![]() ![]() ![]() | 459.5 MB 454.2 MB 242.6 MB 242.6 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 721.1 KB | Display | ![]() |
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Full document | ![]() | 720.7 KB | Display | |
Data in XML | ![]() | 26.3 KB | Display | |
Data in CIF | ![]() | 35.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9cq3MC ![]() 9cq6C ![]() 9cqcC ![]() 9n81C ![]() 9n82C ![]() 9n83C M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | composite map for NHEJ gap-filling complex | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.833 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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Density Histograms |
-Additional map: Postprocessed (by RELION) map for model building and validation
File | emd_45807_additional_1.map | ||||||||||||
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Annotation | Postprocessed (by RELION) map for model building and validation | ||||||||||||
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-Additional map: DeepEMhancer sharpened map for model building
File | emd_45807_additional_2.map | ||||||||||||
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Annotation | DeepEMhancer sharpened map for model building | ||||||||||||
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Density Histograms |
-Half map: half 1 map
File | emd_45807_half_map_1.map | ||||||||||||
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Annotation | half 1 map | ||||||||||||
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Density Histograms |
-Half map: half 2 map
File | emd_45807_half_map_2.map | ||||||||||||
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Annotation | half 2 map | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
+Entire : A gap-filling complex with Pol mu engaged
+Supramolecule #1: A gap-filling complex with Pol mu engaged
+Macromolecule #1: X-ray repair cross-complementing protein 6
+Macromolecule #2: X-ray repair cross-complementing protein 5
+Macromolecule #3: Non-homologous end-joining factor 1
+Macromolecule #4: DNA repair protein XRCC4
+Macromolecule #5: DNA ligase 4
+Macromolecule #6: Protein PAXX
+Macromolecule #11: DNA-directed DNA/RNA polymerase mu
+Macromolecule #7: DNA (38-MER)
+Macromolecule #8: DNA (42-MER)
+Macromolecule #9: DNA (34-MER)
+Macromolecule #10: DNA (37-MER)
+Macromolecule #12: MAGNESIUM ION
+Macromolecule #13: 2'-deoxy-5'-O-[(R)-hydroxy{[(R)-hydroxy(phosphonooxy)phosphoryl]a...
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.35 mg/mL |
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Buffer | pH: 7.9 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 54.4 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.5 µm / Nominal defocus min: 0.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |