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- PDB-8oxo: ATM(Q2971A) dimeric C-terminal region activated by oxidative stre... -
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Basic information
Entry | Database: PDB / ID: 8oxo | ||||||||||||
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Title | ATM(Q2971A) dimeric C-terminal region activated by oxidative stress in complex with Mg AMP-PNP and p53 peptide | ||||||||||||
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![]() | SIGNALING PROTEIN / Kinase / Ataxia-Telangiectasia Mutated / ATM / p53 | ||||||||||||
Function / homology | ![]() establishment of RNA localization to telomere / positive regulation of telomerase catalytic core complex assembly / cellular response to nitrosative stress / negative regulation of telomere capping / Sensing of DNA Double Strand Breaks / establishment of protein-containing complex localization to telomere / peptidyl-serine autophosphorylation / meiotic telomere clustering / positive regulation of telomere maintenance via telomere lengthening / pre-B cell allelic exclusion ...establishment of RNA localization to telomere / positive regulation of telomerase catalytic core complex assembly / cellular response to nitrosative stress / negative regulation of telomere capping / Sensing of DNA Double Strand Breaks / establishment of protein-containing complex localization to telomere / peptidyl-serine autophosphorylation / meiotic telomere clustering / positive regulation of telomere maintenance via telomere lengthening / pre-B cell allelic exclusion / histone mRNA catabolic process / DNA-dependent protein kinase activity / male meiotic nuclear division / extrinsic component of synaptic vesicle membrane / histone H2AXS139 kinase activity / regulation of telomere maintenance via telomerase / female meiotic nuclear division / lipoprotein catabolic process / DNA double-strand break processing / regulation of autophagosome assembly / cellular response to X-ray / V(D)J recombination / pexophagy / oocyte development / Impaired BRCA2 binding to PALB2 / negative regulation of helicase activity / Loss of function of TP53 in cancer due to loss of tetramerization ability / Regulation of TP53 Expression / signal transduction by p53 class mediator / negative regulation of G1 to G0 transition / negative regulation of glucose catabolic process to lactate via pyruvate / Transcriptional activation of cell cycle inhibitor p21 / regulation of intrinsic apoptotic signaling pathway by p53 class mediator / negative regulation of pentose-phosphate shunt / ATP-dependent DNA/DNA annealing activity / Activation of NOXA and translocation to mitochondria / regulation of cell cycle G2/M phase transition / regulation of fibroblast apoptotic process / oligodendrocyte apoptotic process / negative regulation of miRNA processing / intrinsic apoptotic signaling pathway in response to hypoxia / positive regulation of thymocyte apoptotic process / oxidative stress-induced premature senescence / regulation of tissue remodeling / positive regulation of mitochondrial membrane permeability / mRNA transcription / bone marrow development / positive regulation of programmed necrotic cell death / reciprocal meiotic recombination / DNA repair complex / circadian behavior / T cell proliferation involved in immune response / positive regulation of DNA damage response, signal transduction by p53 class mediator / regulation of mitochondrial membrane permeability involved in apoptotic process / germ cell nucleus / RUNX3 regulates CDKN1A transcription / glucose catabolic process to lactate via pyruvate / TP53 Regulates Transcription of Death Receptors and Ligands / Activation of PUMA and translocation to mitochondria / TP53 regulates transcription of additional cell cycle genes whose exact role in the p53 pathway remain uncertain / regulation of DNA damage response, signal transduction by p53 class mediator / histone deacetylase regulator activity / Homologous DNA Pairing and Strand Exchange / Defective homologous recombination repair (HRR) due to BRCA1 loss of function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA1 binding function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA2/RAD51/RAD51C binding function / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / negative regulation of glial cell proliferation / Regulation of TP53 Activity through Association with Co-factors / 1-phosphatidylinositol-3-kinase activity / negative regulation of neuroblast proliferation / Resolution of D-loop Structures through Holliday Junction Intermediates / HDR through Single Strand Annealing (SSA) / mitochondrial DNA repair / T cell lineage commitment / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / response to ionizing radiation / ER overload response / negative regulation of B cell proliferation / thymocyte apoptotic process / B cell lineage commitment / TP53 Regulates Transcription of Caspase Activators and Caspases / mitotic spindle assembly checkpoint signaling / positive regulation of double-strand break repair / Impaired BRCA2 binding to RAD51 / cardiac septum morphogenesis / cellular response to stress / negative regulation of mitophagy / negative regulation of DNA replication / entrainment of circadian clock by photoperiod / negative regulation of telomere maintenance via telomerase / Zygotic genome activation (ZGA) / mitotic G2 DNA damage checkpoint signaling / positive regulation of release of cytochrome c from mitochondria / PI5P Regulates TP53 Acetylation / Association of TriC/CCT with target proteins during biosynthesis / necroptotic process / TP53 Regulates Transcription of Genes Involved in Cytochrome C Release / TFIID-class transcription factor complex binding / SUMOylation of transcription factors Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | ||||||||||||
![]() | Howes, A.C. / Perisic, O. / Williams, R.L. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural insights into the activation of ataxia-telangiectasia mutated by oxidative stress. Authors: Anna C Howes / Olga Perisic / Roger L Williams / ![]() Abstract: Ataxia-telangiectasia mutated (ATM) is a master kinase regulating DNA damage response that is activated by DNA double-strand breaks. However, ATM is also directly activated by reactive oxygen ...Ataxia-telangiectasia mutated (ATM) is a master kinase regulating DNA damage response that is activated by DNA double-strand breaks. However, ATM is also directly activated by reactive oxygen species, but how oxidative activation is achieved remains unknown. We determined the cryo-EM structure of an HO-activated ATM and showed that under oxidizing conditions, ATM formed an intramolecular disulfide bridge between two protomers that are rotated relative to each other when compared to the basal state. This rotation is accompanied by release of the substrate-blocking PRD region and twisting of the N-lobe relative to the C-lobe, which greatly optimizes catalysis. This active site remodeling enabled us to capture a substrate (p53) bound to the enzyme. This provides the first structural insights into how ATM is activated during oxidative stress. | ||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 809.1 KB | Display | ![]() |
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PDB format | ![]() | 497.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.8 MB | Display | ![]() |
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Full document | ![]() | 1.8 MB | Display | |
Data in XML | ![]() | 90.9 KB | Display | |
Data in CIF | ![]() | 135.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 17266MC ![]() 8oxmC ![]() 8oxpC ![]() 8oxqC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein/peptide | Mass: 1362.438 Da / Num. of mol.: 2 / Source method: obtained synthetically / Details: Custom synthesized peptide / Source: (synth.) ![]() #2: Protein | Mass: 365005.562 Da / Num. of mol.: 2 / Mutation: Q2971A Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: Q13315, non-specific serine/threonine protein kinase #3: Chemical | #4: Chemical | #5: Chemical | Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: ATM(Q2971A) dimeric C-terminal region activated by H2O2 and bound to Mg AMP-PNP and p53 substrate peptide Type: COMPLEX Details: Only the C-terminal region of the ATM (Q2971A) dimer from local refinement is shown, with AMP-PNP and p53 substrate peptide bound in the structure. Please note, the whole dimer molecule is present in the sample. Entity ID: #1-#2 / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm |
Specimen holder | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 39.5 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
Symmetry | Point symmetry: C2 (2 fold cyclic) | ||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 30707 / Symmetry type: POINT | ||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 7SIC Accession code: 7SIC / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 152.88 Å2 | ||||||||||||||||||||||||||||
Refine LS restraints |
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