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Yorodumi- 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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Keywords | SIGNALING PROTEIN / Kinase / Ataxia-Telangiectasia Mutated / ATM / p53 | ||||||||||||
| Function / homology | Function and homology informationestablishment of RNA localization to telomere / positive regulation of telomerase catalytic core complex assembly / peptidyl-serine autophosphorylation / meiotic telomere clustering / cellular response to nitrosative stress / negative regulation of telomere capping / establishment of protein-containing complex localization to telomere / Sensing of DNA Double Strand Breaks / lipoprotein catabolic process / positive regulation of telomere maintenance via telomere lengthening ...establishment of RNA localization to telomere / positive regulation of telomerase catalytic core complex assembly / peptidyl-serine autophosphorylation / meiotic telomere clustering / cellular response to nitrosative stress / negative regulation of telomere capping / establishment of protein-containing complex localization to telomere / Sensing of DNA Double Strand Breaks / lipoprotein catabolic process / positive regulation of telomere maintenance via telomere lengthening / oocyte development / DNA-dependent protein kinase activity / extrinsic component of synaptic vesicle membrane / histone mRNA catabolic process / pre-B cell allelic exclusion / female meiotic nuclear division / regulation of telomere maintenance via telomerase / histone H2AXS139 kinase activity / male meiotic nuclear division / cellular response to X-ray / DNA double-strand break processing / V(D)J recombination / DNA repair complex / regulation of autophagosome assembly / pexophagy / 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 / Activation of NOXA and translocation to mitochondria / germ cell nucleus / ATP-dependent DNA/DNA annealing activity / regulation of cell cycle G2/M phase transition / oligodendrocyte apoptotic process / negative regulation of miRNA processing / intrinsic apoptotic signaling pathway in response to hypoxia / oxidative stress-induced premature senescence / regulation of tissue remodeling / positive regulation of thymocyte apoptotic process / bone marrow development / positive regulation of mitochondrial membrane permeability / regulation of fibroblast apoptotic process / cellular response to actinomycin D / circadian behavior / thymocyte apoptotic process / regulation of mitochondrial membrane permeability involved in apoptotic process / histone deacetylase regulator activity / positive regulation of programmed necrotic cell death / T cell lineage commitment / RUNX3 regulates CDKN1A transcription / T cell proliferation involved in immune response / B cell lineage commitment / 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 / mRNA transcription / reciprocal meiotic recombination / negative regulation of glial cell proliferation / negative regulation of B cell proliferation / negative regulation of neuroblast proliferation / regulation of DNA damage response, signal transduction by p53 class mediator / Regulation of TP53 Activity through Association with Co-factors / positive regulation of DNA damage response, signal transduction by p53 class mediator / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / 1-phosphatidylinositol-3-kinase activity / mitochondrial DNA repair / cellular response to stress / ER overload response / neuroblast proliferation / mitotic spindle assembly checkpoint signaling / TP53 Regulates Transcription of Caspase Activators and Caspases / cardiac septum morphogenesis / HDR through Single Strand Annealing (SSA) / necroptotic process / response to ionizing radiation / entrainment of circadian clock by photoperiod / negative regulation of DNA replication / hematopoietic stem cell differentiation / 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) / mitotic G2 DNA damage checkpoint signaling / Zygotic genome activation (ZGA) / negative regulation of mitophagy / Resolution of D-loop Structures through Holliday Junction Intermediates / TP53 Regulates Transcription of Genes Involved in Cytochrome C Release / PI5P Regulates TP53 Acetylation / positive regulation of release of cytochrome c from mitochondria / Association of TriC/CCT with target proteins during biosynthesis / positive regulation of double-strand break repair / negative regulation of telomere maintenance via telomerase Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | ||||||||||||
Authors | Howes, A.C. / Perisic, O. / Williams, R.L. | ||||||||||||
| Funding support | United Kingdom, 3items
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Citation | Journal: Sci Adv / Year: 2023Title: 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. | ||||||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8oxo.cif.gz | 809.1 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8oxo.ent.gz | 497.3 KB | Display | PDB format |
| PDBx/mmJSON format | 8oxo.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ox/8oxo ftp://data.pdbj.org/pub/pdb/validation_reports/ox/8oxo | HTTPS FTP |
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-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 F&H Search |
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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.) Homo sapiens (human) / References: UniProt: P04637#2: Protein | Mass: 365005.562 Da / Num. of mol.: 2 / Mutation: Q2971A Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: ATM / Cell (production host): Kidney (Embryonic) / Cell line (production host): Expi293F / Production host: Homo sapiens (human)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: Homo sapiens (human) |
| Source (recombinant) | Organism: Homo sapiens (human) / Cell: Kidney (Embryonic) |
| 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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| 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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| 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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About Yorodumi



Homo sapiens (human)
United Kingdom, 3items
Citation






PDBj




































FIELD EMISSION GUN
