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- PDB-7z87: DNA-PK in the active state -

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Basic information

Entry
Database: PDB / ID: 7z87
TitleDNA-PK in the active state
Components
  • (DNA (26-MER)) x 2
  • (X-ray repair cross-complementing protein ...) x 2
  • DNA-dependent protein kinase catalytic subunit
KeywordsDNA BINDING PROTEIN / DNA-dependent protein kinase
Function / homology
Function and homology information


Ku70:Ku80 complex / negative regulation of t-circle formation / positive regulation of platelet formation / DNA end binding / T cell receptor V(D)J recombination / pro-B cell differentiation / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase activity / histone H2AXS139 kinase activity ...Ku70:Ku80 complex / negative regulation of t-circle formation / positive regulation of platelet formation / DNA end binding / T cell receptor V(D)J recombination / pro-B cell differentiation / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase activity / histone H2AXS139 kinase activity / DNA-dependent protein kinase complex / immature B cell differentiation / DNA-dependent protein kinase-DNA ligase 4 complex / cellular response to X-ray / immunoglobulin V(D)J recombination / nonhomologous end joining complex / nuclear telomere cap complex / DNA ligation / regulation of smooth muscle cell proliferation / Cytosolic sensors of pathogen-associated DNA / double-strand break repair via alternative nonhomologous end joining / double-strand break repair via classical nonhomologous end joining / regulation of epithelial cell proliferation / IRF3-mediated induction of type I IFN / telomere capping / recombinational repair / regulation of telomere maintenance / regulation of hematopoietic stem cell differentiation / U3 snoRNA binding / positive regulation of neurogenesis / protein localization to chromosome, telomeric region / cellular response to fatty acid / hematopoietic stem cell proliferation / cellular hyperosmotic salinity response / maturation of 5.8S rRNA / T cell lineage commitment / telomeric DNA binding / negative regulation of cGAS/STING signaling pathway / B cell lineage commitment / positive regulation of catalytic activity / 2-LTR circle formation / positive regulation of double-strand break repair via nonhomologous end joining / site of DNA damage / Lyases; Carbon-oxygen lyases; Other carbon-oxygen lyases / enzyme activator activity / 5'-deoxyribose-5-phosphate lyase activity / hematopoietic stem cell differentiation / positive regulation of protein kinase activity / ectopic germ cell programmed cell death / ATP-dependent activity, acting on DNA / somitogenesis / positive regulation of telomerase activity / mitotic G1 DNA damage checkpoint signaling / positive regulation of telomere maintenance via telomerase / DNA helicase activity / telomere maintenance / activation of innate immune response / neurogenesis / cellular response to leukemia inhibitory factor / cyclin binding / small-subunit processome / positive regulation of translation / positive regulation of erythrocyte differentiation / negative regulation of protein phosphorylation / protein-DNA complex / response to gamma radiation / Nonhomologous End-Joining (NHEJ) / peptidyl-threonine phosphorylation / brain development / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / protein destabilization / cellular response to gamma radiation / protein modification process / regulation of circadian rhythm / double-strand break repair via nonhomologous end joining / cellular response to insulin stimulus / rhythmic process / intrinsic apoptotic signaling pathway in response to DNA damage / double-strand break repair / E3 ubiquitin ligases ubiquitinate target proteins / T cell differentiation in thymus / heart development / double-stranded DNA binding / scaffold protein binding / peptidyl-serine phosphorylation / secretory granule lumen / DNA recombination / ficolin-1-rich granule lumen / transcription regulator complex / RNA polymerase II-specific DNA-binding transcription factor binding / chromosome, telomeric region / damaged DNA binding / transcription cis-regulatory region binding / non-specific serine/threonine protein kinase / protein kinase activity / response to xenobiotic stimulus / ribonucleoprotein complex / positive regulation of apoptotic process / protein domain specific binding / protein phosphorylation
Similarity search - Function
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, N-terminal alpha/beta / Ku70/Ku80 beta-barrel domain ...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, N-terminal alpha/beta / Ku70/Ku80 beta-barrel domain / Ku70/Ku80 C-terminal arm / 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 / DNA-dependent protein kinase catalytic subunit, CC3 / SPOC-like, C-terminal domain superfamily / 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 / SAP domain superfamily / SAP domain / SAP motif profile. / Putative DNA-binding (bihelical) motif predicted to be involved in chromosomal organisation / SAP domain / PIK-related kinase, FAT / FAT domain / FATC domain / FATC / FATC domain / PIK-related kinase / FAT domain profile. / FATC domain profile. / Phosphatidylinositol 3- and 4-kinases signature 1. / Phosphatidylinositol 3/4-kinase, conserved site / Phosphatidylinositol 3- and 4-kinases signature 2. / 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 / von Willebrand factor A-like domain superfamily / Armadillo-like helical / Armadillo-type fold / Protein kinase-like domain superfamily
Similarity search - Domain/homology
Chem-1IX / DNA / DNA (> 10) / X-ray repair cross-complementing protein 6 / X-ray repair cross-complementing protein 5 / DNA-dependent protein kinase catalytic subunit
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.91 Å
AuthorsLiang, S. / Blundell, T.L.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Wellcome Trust United Kingdom
CitationJournal: Nat Struct Mol Biol / Year: 2023
Title: Human DNA-dependent protein kinase activation mechanism.
Authors: Shikang Liang / Tom L Blundell /
Abstract: DNA-dependent protein kinase (DNA-PK), a multicomponent complex including the DNA-PK catalytic subunit and Ku70/80 heterodimer together with DNA, is central to human DNA damage response and repair. ...DNA-dependent protein kinase (DNA-PK), a multicomponent complex including the DNA-PK catalytic subunit and Ku70/80 heterodimer together with DNA, is central to human DNA damage response and repair. Using a DNA-PK-selective inhibitor (M3814), we identified from one dataset two cryo-EM structures of the human DNA-PK complex in different states, the intermediate state and the active state. Here we show that activation of the kinase is regulated through conformational changes caused by the binding ligand and the string region (residues 802-846) of the DNA-PK catalytic subunit, particularly the helix-hairpin-helix motif (residues 816-836) that interacts with DNA. These observations demonstrate the regulatory role of the ligand and explain why DNA-PK is DNA dependent. Cooperation and coordination among binding partners, disordered flexible regions and mechanically flexible HEAT repeats modulate the activation of the kinase. Together with previous findings, these results provide a better molecular understanding of DNA-PK catalysis.
History
DepositionMar 16, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jan 18, 2023Provider: repository / Type: Initial release
Revision 1.1Mar 1, 2023Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: DNA-dependent protein kinase catalytic subunit
B: X-ray repair cross-complementing protein 6
C: X-ray repair cross-complementing protein 5
D: DNA (26-MER)
E: DNA (26-MER)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)638,8916
Polymers638,4095
Non-polymers4821
Water3,495194
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 1 types, 1 molecules A

#1: 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)
References: UniProt: P78527, non-specific serine/threonine protein kinase

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

#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 / 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
#3: 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: Spodoptera frugiperda (fall armyworm)
References: UniProt: P13010, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement

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DNA chain , 2 types, 2 molecules DE

#4: DNA chain DNA (26-MER)


Mass: 7900.079 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)
#5: DNA chain DNA (26-MER)


Mass: 8078.203 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)

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Non-polymers , 2 types, 195 molecules

#6: Chemical ChemComp-1IX / (~{S})-[2-chloranyl-4-fluoranyl-5-(7-morpholin-4-ylquinazolin-4-yl)phenyl]-(6-methoxypyridazin-3-yl)methanol / Nedisertib


Mass: 481.907 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C24H21ClFN5O3 / Feature type: SUBJECT OF INVESTIGATION
#7: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 194 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY

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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: Human DNA-dependent protein kinase / Type: COMPLEX / Entity ID: #1-#5 / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
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: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2300 nm / Nominal defocus min: 1100 nm
Image recordingElectron dose: 47.22 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.91 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 275300 / Symmetry type: POINT

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