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- PDB-9gd7: DNA-PK Ku80 mediated dimer bound to DNA polymerase Lambda and DNA... -

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Basic information

Entry
Database: PDB / ID: 9gd7
TitleDNA-PK Ku80 mediated dimer bound to DNA polymerase Lambda and DNA ligase 4/XRCC4
Components
  • (DNA) x 2
  • (X-ray repair cross-complementing protein ...) x 2
  • DNA ligase 4
  • DNA polymerase lambda
  • DNA repair protein XRCC4
  • DNA-dependent protein kinase catalytic subunit
  • Protein PAXX
KeywordsDNA BINDING PROTEIN / Kinase / complex / DNA-binding
Function / homology
Function and homology information


FHA domain binding / positive regulation of chromosome organization / positive regulation of ligase activity / DNA ligase IV complex / positive regulation of platelet formation / DNA ligase activity / Ku70:Ku80 complex / DN2 thymocyte differentiation / negative regulation of t-circle formation / DNA ligase (ATP) ...FHA domain binding / positive regulation of chromosome organization / positive regulation of ligase activity / DNA ligase IV complex / positive regulation of platelet formation / 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 / immature B cell differentiation / DNA-dependent protein kinase activity / histone H2AXS139 kinase activity / single strand break repair / regulation of smooth muscle cell proliferation / positive regulation of double-strand break repair via nonhomologous end joining / cellular response to X-ray / 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 / protein localization to site of double-strand break / regulation of epithelial cell proliferation / telomere capping / isotype switching / Cytosolic sensors of pathogen-associated DNA / IRF3-mediated induction of type I IFN / positive regulation of neurogenesis / regulation of hematopoietic stem cell differentiation / regulation of telomere maintenance / recombinational repair / U3 snoRNA binding / protein localization to chromosome, telomeric region / DNA biosynthetic process / maturation of 5.8S rRNA / T cell lineage commitment / cellular response to lithium ion / cellular hyperosmotic salinity response / negative regulation of cGAS/STING signaling pathway / 2-LTR circle formation / telomeric DNA binding / B cell lineage commitment / hematopoietic stem cell proliferation / ligase activity / negative regulation of protein phosphorylation / positive regulation of protein kinase activity / site of DNA damage / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / peptidyl-threonine phosphorylation / 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 / ectopic germ cell programmed cell death / chromosome organization / telomere maintenance via telomerase / somitogenesis / SUMOylation of DNA damage response and repair proteins / somatic hypermutation of immunoglobulin genes / condensed chromosome / base-excision repair, gap-filling / DNA polymerase binding / neurogenesis / mitotic G1 DNA damage checkpoint signaling / cellular response to ionizing radiation / telomere maintenance / DNA helicase activity / activation of innate immune response / cyclin binding / positive regulation of erythrocyte differentiation / positive regulation of translation / cellular response to leukemia inhibitory factor / central nervous system development / stem cell proliferation / double-strand break repair via homologous recombination / response to gamma radiation / nucleotide-excision repair / Nonhomologous End-Joining (NHEJ) / small-subunit processome / enzyme activator activity / cellular response to gamma radiation / regulation of circadian rhythm / protein destabilization / protein-DNA complex / base-excision repair / brain development / peptidyl-serine phosphorylation / protein modification process
Similarity search - Function
Protein PAXX / : / PAXX, PAralog of XRCC4 and XLF, also called C9orf142 / DNA ligase IV domain / DNA ligase IV / DNA ligase 4 / DNA Ligase 4, adenylation domain / XRCC4, N-terminal domain superfamily / DNA repair protein XRCC4 / : ...Protein PAXX / : / PAXX, PAralog of XRCC4 and XLF, also called C9orf142 / DNA ligase IV domain / DNA ligase IV / DNA ligase 4 / DNA Ligase 4, adenylation domain / XRCC4, N-terminal domain superfamily / DNA repair protein XRCC4 / : / : / : / XRCC4 N-terminal domain / XRCC4 coiled-coil / XRCC4 C-terminal region / XRCC4-like, N-terminal domain superfamily / Ku70, bridge and pillars domain superfamily / : / Ku70 / DNA-dependent protein kinase catalytic subunit, CC3 / DNA-dependent protein kinase catalytic subunit, catalytic domain / DNA-dependent protein kinase catalytic subunit, CC5 / DNA-dependent protein kinase catalytic subunit, CC1/2 / DNA-PKcs, N-terminal / DNA-dependent protein kinase catalytic subunit, CC3 / DNA-PKcs, CC5 / DNA-PKcs, N-terminal / DNA-dependent protein kinase catalytic subunit, CC1/2 / NUC194 / Ku, C-terminal / Ku, C-terminal domain superfamily / Ku C terminal domain like / DNA ligase, ATP-dependent / DNA ligase, ATP-dependent, N-terminal / Ku80 / DNA ligase, ATP-dependent, N-terminal domain superfamily / DNA ligase N terminus / 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 / ATP-dependent DNA ligase AMP-binding site. / ATP-dependent DNA ligase signature 2. / DNA ligase, ATP-dependent, C-terminal / ATP dependent DNA ligase C terminal region / DNA ligase, ATP-dependent, conserved site / ATP-dependent DNA ligase family profile. / DNA ligase, ATP-dependent, central / ATP dependent DNA ligase domain / SAP domain superfamily / DNA repair protein XRCC4-like, C-terminal / SAP motif profile. / SAP domain / Putative DNA-binding (bihelical) motif predicted to be involved in chromosomal organisation / SAP domain / : / FATC domain / PIK-related kinase, FAT / FAT domain / FATC / FATC domain / PIK-related kinase / FAT domain profile. / FATC domain profile. / BRCA1 C Terminus (BRCT) domain / DNA polymerase family X, beta-like / DNA polymerase beta, palm domain / DNA polymerase beta palm / Phosphatidylinositol 3- and 4-kinases signature 1. / breast cancer carboxy-terminal domain / DNA polymerase lambda, fingers domain / Fingers domain of DNA polymerase lambda / DNA-directed DNA polymerase X / DNA polymerase beta-like, N-terminal domain / Helix-hairpin-helix domain / DNA polymerase X family / DNA polymerase family X, binding site / DNA polymerase family X signature. / DNA polymerase lambda lyase domain superfamily / Phosphatidylinositol 3/4-kinase, conserved site / Phosphatidylinositol 3- and 4-kinases signature 2. / DNA polymerase family X / DNA polymerase beta, thumb domain / DNA polymerase, thumb domain superfamily / DNA polymerase beta thumb / Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily / Phosphoinositide 3-kinase, catalytic domain / Phosphatidylinositol 3- and 4-kinase / Phosphatidylinositol 3- and 4-kinases catalytic domain profile. / Phosphatidylinositol 3-/4-kinase, catalytic domain / von Willebrand factor (vWF) type A domain / von Willebrand factor, type A / BRCT domain profile. / BRCT domain / BRCT domain superfamily / Nucleotidyltransferase superfamily
Similarity search - Domain/homology
DNA / DNA (> 10) / X-ray repair cross-complementing protein 6 / X-ray repair cross-complementing protein 5 / DNA ligase 4 / DNA-dependent protein kinase catalytic subunit / DNA repair protein XRCC4 / Protein PAXX / DNA polymerase lambda
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.25 Å
AuthorsChaplin, A.K. / Amin, H. / Zahid, S. / Hardwick, S.W.
Funding support United Kingdom, 2items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MR/X00029X/1 United Kingdom
The Lister Institute of Preventive Medicine United Kingdom
CitationJournal: To Be Published
Title: Ku70/80 anchors DNA polymerase Lambda at sites of DNA synapsis during NHEJ
Authors: Chaplin, A.K. / Amin, H. / Zahid, S. / Hardwick, S.W.
History
DepositionAug 5, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 13, 2025Provider: repository / Type: Initial release
Revision 1.0Aug 13, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Aug 13, 2025Data content type: Additional map / Part number: 1 / Data content type: Additional map / Provider: repository / Type: Initial release
Revision 1.0Aug 13, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Aug 13, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Aug 13, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Aug 13, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Aug 13, 2025Data content type: Mask / Part number: 1 / Data content type: Mask / Provider: repository / Type: Initial release
Revision 1.0Aug 13, 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

Downloads & links

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Assembly

Deposited unit
E: DNA ligase 4
L: X-ray repair cross-complementing protein 5
M: Protein PAXX
P: DNA repair protein XRCC4
Q: DNA repair protein XRCC4
S: DNA-dependent protein kinase catalytic subunit
T: X-ray repair cross-complementing protein 6
i: DNA
j: DNA
A: DNA polymerase lambda


Theoretical massNumber of molelcules
Total (without water)903,84610
Polymers903,84610
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 5 types, 6 molecules EMPQSA

#1: Protein DNA ligase 4 / DNA ligase IV / Polydeoxyribonucleotide synthase [ATP] 4


Mass: 104124.953 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: LIG4 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P49917, DNA ligase (ATP)
#3: Protein Protein PAXX / Paralog of XRCC4 and XLF / XRCC4-like small protein


Mass: 21663.498 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PAXX, C9orf142, XLS / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q9BUH6
#4: Protein DNA repair protein XRCC4 / X-ray repair cross-complementing protein 4


Mass: 38337.703 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: XRCC4 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q13426
#5: Protein DNA-dependent protein kinase catalytic subunit / DNA-PK catalytic subunit / DNA-PKcs / DNPK1 / p460


Mass: 469673.219 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
References: UniProt: P78527, non-specific serine/threonine protein kinase
#9: Protein DNA polymerase lambda / Pol Lambda / DNA polymerase beta-2 / Pol beta2 / DNA polymerase kappa


Mass: 63571.238 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: POLL / Production host: Escherichia coli BL21(DE3) (bacteria)
References: UniProt: Q9UGP5, DNA-directed DNA polymerase, Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases

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

#2: 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 / 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)


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: Insect cell expression vector pTIE1 (others)
References: UniProt: P13010, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
#6: 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 / 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: 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

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DNA chain , 2 types, 2 molecules ij

#7: DNA chain DNA


Mass: 7632.012 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)
#8: DNA chain DNA


Mass: 7748.026 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)

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Details

Has protein modificationN

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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: Ku80 mediated dimer of DNA-PK bound to Polymerase Lambda and XRCC4/DNA ligase IV
Type: COMPLEX / Entity ID: all / Source: NATURAL
Molecular weightValue: 0.8 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenConc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 2200 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 1.04 sec. / Electron dose: 51.96 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 11487

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Processing

EM software
IDNameCategory
1Warpparticle selection
2EPUimage acquisition
4WarpCTF correction
9cryoSPARCinitial Euler assignment
10cryoSPARCfinal Euler assignment
11cryoSPARCclassification
12cryoSPARC3D reconstruction
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 603711
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4.25 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 14964 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 386.83 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.003842629
ELECTRON MICROSCOPYf_angle_d0.827457815
ELECTRON MICROSCOPYf_chiral_restr0.04796580
ELECTRON MICROSCOPYf_plane_restr0.00537201
ELECTRON MICROSCOPYf_dihedral_angle_d16.205615989

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