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- PDB-9iol: Cryo-EM structure of the complex of DNA, Ku70/80, and laXLF. -

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Basic information

Entry
Database: PDB / ID: 9iol
TitleCryo-EM structure of the complex of DNA, Ku70/80, and laXLF.
Components
  • (X-ray repair cross-complementing protein ...) x 2
  • DNA (5'-D(P*AP*GP*GP*TP*CP*GP*AP*CP*GP*AP*AP*TP*CP*GP*GP*CP*AP*GP*CP*G)-3')
  • DNA (5'-D(P*CP*GP*CP*TP*GP*CP*CP*GP*AP*TP*TP*CP*GP*TP*CP*GP*AP*CP*CP*T)-3')
  • Peptide from Non-homologous end-joining factor 1
KeywordsDNA BINDING PROTEIN/DNA / DNA repair / NHEJ / Complex / Lactylation / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex
Function / homology
Function and homology information


positive regulation of ligase activity / DNA ligase IV complex / Ku70:Ku80 complex / negative regulation of t-circle formation / DNA end binding / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / cellular response to X-ray ...positive regulation of ligase activity / DNA ligase IV complex / Ku70:Ku80 complex / negative regulation of t-circle formation / DNA end binding / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase complex / DNA-dependent protein kinase-DNA ligase 4 complex / cellular response to X-ray / nonhomologous end joining complex / immunoglobulin V(D)J recombination / regulation of smooth muscle cell proliferation / nuclear telomere cap complex / double-strand break repair via classical nonhomologous end joining / Cytosolic sensors of pathogen-associated DNA / IRF3-mediated induction of type I IFN / regulation of telomere maintenance / recombinational repair / U3 snoRNA binding / protein localization to chromosome, telomeric region / cellular hyperosmotic salinity response / cellular response to fatty acid / positive regulation of neurogenesis / response to ionizing radiation / telomeric DNA binding / 2-LTR circle formation / hematopoietic stem cell proliferation / site of DNA damage / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / T cell differentiation / 5'-deoxyribose-5-phosphate lyase activity / positive regulation of protein kinase activity / ATP-dependent activity, acting on DNA / hematopoietic stem cell differentiation / telomere maintenance via telomerase / DNA helicase activity / DNA polymerase binding / neurogenesis / telomere maintenance / activation of innate immune response / B cell differentiation / cyclin binding / cellular response to leukemia inhibitory factor / enzyme activator activity / central nervous system development / Nonhomologous End-Joining (NHEJ) / small-subunit processome / cellular response to gamma radiation / protein-DNA complex / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / double-strand break repair via nonhomologous end joining / fibrillar center / double-strand break repair / site of double-strand break / double-stranded DNA binding / scaffold protein binding / secretory granule lumen / DNA recombination / transcription regulator complex / ficolin-1-rich granule lumen / damaged DNA binding / chromosome, telomeric region / transcription cis-regulatory region binding / response to xenobiotic stimulus / ribonucleoprotein complex / innate immune response / negative regulation of DNA-templated transcription / ubiquitin protein ligase binding / DNA damage response / Neutrophil degranulation / protein-containing complex binding / positive regulation of DNA-templated transcription / nucleolus / positive regulation of transcription by RNA polymerase II / protein-containing complex / ATP hydrolysis activity / DNA binding / RNA binding / extracellular region / nucleoplasm / ATP binding / nucleus / membrane / plasma membrane / cytosol
Similarity search - Function
XLF, N-terminal / : / : / XLF N-terminal domain / XLF protein coiled-coil region / XRCC4-like, N-terminal domain superfamily / Ku70, bridge and pillars domain superfamily / : / Ku70 / Ku, C-terminal ...XLF, N-terminal / : / : / XLF N-terminal domain / XLF protein coiled-coil region / XRCC4-like, N-terminal domain superfamily / Ku70, bridge and pillars domain superfamily / : / Ku70 / Ku, C-terminal / Ku, C-terminal domain superfamily / Ku C terminal domain like / Ku80 / Ku70/Ku80 C-terminal arm / Ku70/Ku80 C-terminal arm / Ku70/Ku80, N-terminal alpha/beta / Ku70/Ku80 beta-barrel domain / Ku70/Ku80 N-terminal alpha/beta domain / Ku70 and Ku80 are 70kDa and 80kDa subunits of the Lupus Ku autoantigen / Ku70/Ku80 beta-barrel domain / SPOC-like, C-terminal domain superfamily / SAP domain superfamily / SAP motif profile. / SAP domain / Putative DNA-binding (bihelical) motif predicted to be involved in chromosomal organisation / SAP domain / von Willebrand factor (vWF) type A domain / von Willebrand factor, type A / von Willebrand factor A-like domain superfamily
Similarity search - Domain/homology
(2S)-2-HYDROXYPROPANOIC ACID / INOSITOL HEXAKISPHOSPHATE / DNA / DNA (> 10) / X-ray repair cross-complementing protein 6 / X-ray repair cross-complementing protein 5 / Non-homologous end-joining factor 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.46 Å
AuthorsLiang, S.
Funding support Hong Kong, 1items
OrganizationGrant numberCountry
Other private Hong Kong
CitationJournal: To Be Published
Title: Cryo-EM structure of the complex of DNA, Ku70/80, and laXLF.
Authors: Liang, S.
History
DepositionJul 9, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jul 9, 2025Provider: repository / Type: Initial release
Revision 1.0Jul 9, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jul 9, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jul 9, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Jul 9, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jul 9, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: X-ray repair cross-complementing protein 5
B: X-ray repair cross-complementing protein 6
C: DNA (5'-D(P*CP*GP*CP*TP*GP*CP*CP*GP*AP*TP*TP*CP*GP*TP*CP*GP*AP*CP*CP*T)-3')
D: DNA (5'-D(P*AP*GP*GP*TP*CP*GP*AP*CP*GP*AP*AP*TP*CP*GP*GP*CP*AP*GP*CP*G)-3')
M: Peptide from Non-homologous end-joining factor 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)169,1717
Polymers168,4205
Non-polymers7502
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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X-ray repair cross-complementing protein ... , 2 types, 2 molecules AB

#1: Protein X-ray repair cross-complementing protein 5 / 86 kDa subunit of Ku antigen / ATP-dependent DNA helicase 2 subunit 2 / ATP-dependent DNA helicase ...86 kDa subunit of Ku antigen / ATP-dependent DNA helicase 2 subunit 2 / ATP-dependent DNA helicase II 80 kDa subunit / CTC box-binding factor 85 kDa subunit / CTC85 / CTCBF / DNA repair protein XRCC5 / Ku80 / Ku86 / Lupus Ku autoantigen protein p86 / Nuclear factor IV / Thyroid-lupus autoantigen / TLAA / X-ray repair complementing defective repair in Chinese hamster cells 5 (double-strand-break rejoining) / Ku80


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: Spodoptera frugiperda (fall armyworm)
References: UniProt: P13010, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
#2: Protein X-ray repair cross-complementing protein 6 / 5'-deoxyribose-5-phosphate lyase Ku70 / 5'-dRP lyase Ku70 / 70 kDa subunit of Ku antigen / ATP- ...5'-deoxyribose-5-phosphate lyase Ku70 / 5'-dRP lyase Ku70 / 70 kDa subunit of Ku antigen / ATP-dependent DNA helicase 2 subunit 1 / ATP-dependent DNA helicase II 70 kDa subunit / CTC box-binding factor 75 kDa subunit / CTC75 / CTCBF / DNA repair protein XRCC6 / Lupus Ku autoantigen protein p70 / Ku70 / Thyroid-lupus autoantigen / TLAA / X-ray repair complementing defective repair in Chinese hamster cells 6


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: Spodoptera frugiperda (fall armyworm)
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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DNA chain , 2 types, 2 molecules CD

#3: DNA chain DNA (5'-D(P*CP*GP*CP*TP*GP*CP*CP*GP*AP*TP*TP*CP*GP*TP*CP*GP*AP*CP*CP*T)-3')


Mass: 6969.472 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)
#4: DNA chain DNA (5'-D(P*AP*GP*GP*TP*CP*GP*AP*CP*GP*AP*AP*TP*CP*GP*GP*CP*AP*GP*CP*G)-3')


Mass: 7156.611 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)

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Protein/peptide , 1 types, 1 molecules M

#5: Protein/peptide Peptide from Non-homologous end-joining factor 1 / laXLF


Mass: 1536.907 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) / References: UniProt: Q9H9Q4

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Non-polymers , 2 types, 2 molecules

#6: Chemical ChemComp-IHP / INOSITOL HEXAKISPHOSPHATE / MYO-INOSITOL HEXAKISPHOSPHATE / INOSITOL 1,2,3,4,5,6-HEXAKISPHOSPHATE


Mass: 660.035 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H18O24P6 / Feature type: SUBJECT OF INVESTIGATION
#7: Chemical ChemComp-2OP / (2S)-2-HYDROXYPROPANOIC ACID


Mass: 90.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H6O3 / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: The complex of DNA, Ku70/80, and laXLF / Type: COMPLEX / Entity ID: #1-#5 / Source: MULTIPLE SOURCES
Molecular weightValue: 0.168 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.6
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: TFS FALCON 4i (4k x 4k)

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Processing

EM softwareName: cryoSPARC / Category: CTF correction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.46 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 298238 / Symmetry type: POINT

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