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- PDB-7otw: DNA-PKcs in complex with AZD7648 -

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Basic information

Entry
Database: PDB / ID: 7otw
TitleDNA-PKcs in complex with AZD7648
ComponentsDNA-dependent protein kinase catalytic subunit,DNA-PKcs
KeywordsDNA BINDING PROTEIN / complex / inhibitor / DNA repair
Function / homology
Function and homology information


positive regulation of platelet formation / T cell receptor V(D)J recombination / pro-B cell differentiation / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase complex / immature B cell differentiation / DNA-dependent protein kinase-DNA ligase 4 complex / nonhomologous end joining complex / immunoglobulin V(D)J recombination ...positive regulation of platelet formation / T cell receptor V(D)J recombination / pro-B cell differentiation / small-subunit processome assembly / positive regulation of lymphocyte differentiation / DNA-dependent protein kinase complex / immature B cell differentiation / DNA-dependent protein kinase-DNA ligase 4 complex / nonhomologous end joining complex / immunoglobulin V(D)J recombination / regulation of smooth muscle cell proliferation / double-strand break repair via alternative nonhomologous end joining / telomere capping / regulation of epithelial cell proliferation / Cytosolic sensors of pathogen-associated DNA / IRF3-mediated induction of type I IFN / regulation of hematopoietic stem cell differentiation / U3 snoRNA binding / T cell lineage commitment / maturation of 5.8S rRNA / positive regulation of double-strand break repair via nonhomologous end joining / B cell lineage commitment / negative regulation of cGAS/STING signaling pathway / negative regulation of protein phosphorylation / ectopic germ cell programmed cell death / somitogenesis / mitotic G1 DNA damage checkpoint signaling / peptidyl-threonine phosphorylation / telomere maintenance / activation of innate immune response / positive regulation of erythrocyte differentiation / positive regulation of translation / response to gamma radiation / Nonhomologous End-Joining (NHEJ) / small-subunit processome / regulation of circadian rhythm / protein destabilization / brain development / protein-DNA complex / protein modification process / double-strand break repair via nonhomologous end joining / cellular response to insulin stimulus / intrinsic apoptotic signaling pathway in response to DNA damage / rhythmic process / double-strand break repair / E3 ubiquitin ligases ubiquitinate target proteins / peptidyl-serine phosphorylation / T cell differentiation in thymus / heart development / double-stranded DNA binding / transcription regulator complex / RNA polymerase II-specific DNA-binding transcription factor binding / eukaryotic translation initiation factor 2alpha kinase activity / chromosome, telomeric region / 3-phosphoinositide-dependent protein kinase activity / DNA-dependent protein kinase activity / ribosomal protein S6 kinase activity / histone H3S10 kinase activity / histone H2AXS139 kinase activity / histone H3S28 kinase activity / histone H4S1 kinase activity / histone H2BS14 kinase activity / histone H3T3 kinase activity / histone H2AS121 kinase activity / Rho-dependent protein serine/threonine kinase activity / histone H2BS36 kinase activity / histone H3S57 kinase activity / histone H2AT120 kinase activity / AMP-activated protein kinase activity / histone H2AS1 kinase activity / histone H3T6 kinase activity / histone H3T11 kinase activity / histone H3T45 kinase activity / non-specific serine/threonine protein kinase / protein kinase activity / protein phosphorylation / positive regulation of apoptotic process / protein domain specific binding / innate immune response / protein serine kinase activity / protein serine/threonine kinase activity / DNA damage response / negative regulation of apoptotic process / chromatin / nucleolus / enzyme binding / positive regulation of transcription by RNA polymerase II / protein-containing complex / RNA binding / nucleoplasm / ATP binding / nucleus / membrane / cytosol
Similarity search - Function
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 ...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 / : / FATC domain / PIK-related kinase, FAT / FAT 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 / Armadillo-like helical / Armadillo-type fold / Protein kinase-like domain superfamily
Similarity search - Domain/homology
Chem-MBW / DNA-dependent protein kinase catalytic subunit
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.99 Å
AuthorsLiang, S. / Thomas, S.E. / Blundell, T.L.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Wellcome Trust United Kingdom
CitationJournal: Nature / Year: 2022
Title: Structural insights into inhibitor regulation of the DNA repair protein DNA-PKcs.
Authors: Shikang Liang / Sherine E Thomas / Amanda K Chaplin / Steven W Hardwick / Dimitri Y Chirgadze / Tom L Blundell /
Abstract: The DNA-dependent protein kinase catalytic subunit (DNA-PKcs) has a central role in non-homologous end joining, one of the two main pathways that detect and repair DNA double-strand breaks (DSBs) in ...The DNA-dependent protein kinase catalytic subunit (DNA-PKcs) has a central role in non-homologous end joining, one of the two main pathways that detect and repair DNA double-strand breaks (DSBs) in humans. DNA-PKcs is of great importance in repairing pathological DSBs, making DNA-PKcs inhibitors attractive therapeutic agents for cancer in combination with DSB-inducing radiotherapy and chemotherapy. Many of the selective inhibitors of DNA-PKcs that have been developed exhibit potential as treatment for various cancers. Here we report cryo-electron microscopy (cryo-EM) structures of human DNA-PKcs natively purified from HeLa cell nuclear extracts, in complex with adenosine-5'-(γ-thio)-triphosphate (ATPγS) and four inhibitors (wortmannin, NU7441, AZD7648 and M3814), including drug candidates undergoing clinical trials. The structures reveal molecular details of ATP binding at the active site before catalysis and provide insights into the modes of action and specificities of the competitive inhibitors. Of note, binding of the ligands causes movement of the PIKK regulatory domain (PRD), revealing a connection between the p-loop and PRD conformations. Electrophoretic mobility shift assay and cryo-EM studies on the DNA-dependent protein kinase holoenzyme further show that ligand binding does not have a negative allosteric or inhibitory effect on assembly of the holoenzyme complex and that inhibitors function through direct competition with ATP. Overall, the structures described in this study should greatly assist future efforts in rational drug design targeting DNA-PKcs, demonstrating the potential of cryo-EM in structure-guided drug development for large and challenging targets.
History
DepositionJun 10, 2021Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jan 12, 2022Provider: repository / Type: Initial release
Revision 1.1Jan 19, 2022Group: Database references / Category: citation / Item: _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Feb 2, 2022Group: Structure summary / Category: audit_author / Item: _audit_author.name
Revision 1.3Feb 9, 2022Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.4Jul 17, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond / em_admin / Item: _em_admin.last_update

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Structure visualization

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Assembly

Deposited unit
A: DNA-dependent protein kinase catalytic subunit,DNA-PKcs
hetero molecules


Theoretical massNumber of molelcules
Total (without water)471,7562
Polymers471,3751
Non-polymers3801
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area0 Å2
ΔGint0 kcal/mol
Surface area154950 Å2
MethodPISA

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Components

#1: Protein DNA-dependent protein kinase catalytic subunit,DNA-PKcs / DNA-PK catalytic subunit / DNA-PKcs / DNPK1 / p460


Mass: 471375.406 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
#2: Chemical ChemComp-MBW / 7-methyl-2-[(7-methyl-[1,2,4]triazolo[1,5-a]pyridin-6-yl)amino]-9-(oxan-4-yl)purin-8-one


Mass: 380.404 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C18H20N8O2 / Feature type: SUBJECT OF INVESTIGATION
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: DNA-PKcs in complex with AZD7648 / Type: COMPLEX / Entity ID: #1 / 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 FIELD
Image recordingElectron dose: 46.8 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.18.2_3874: / Classification: refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.99 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 164192 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00929633
ELECTRON MICROSCOPYf_angle_d0.90640077
ELECTRON MICROSCOPYf_dihedral_angle_d21.4763922
ELECTRON MICROSCOPYf_chiral_restr0.0524565
ELECTRON MICROSCOPYf_plane_restr0.0065085

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