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Yorodumi- PDB-8oxm: ATM(Q2971A) activated by oxidative stress in complex with Mg AMP-... -
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Basic information
| Entry | Database: PDB / ID: 8oxm | ||||||||||||
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| Title | ATM(Q2971A) activated by oxidative stress in complex with Mg AMP-PNP and p53 peptide | ||||||||||||
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Keywords | SIGNALING PROTEIN / Ataxia-Telangiectasia Mutated / ATM / kinase / oxidative stress | ||||||||||||
| Function / homology | Function and homology informationestablishment of RNA localization to telomere / positive regulation of telomerase catalytic core complex assembly / cellular response to nitrosative stress / negative regulation of telomere capping / establishment of protein-containing complex localization to telomere / Sensing of DNA Double Strand Breaks / peptidyl-serine autophosphorylation / positive regulation of telomere maintenance via telomere lengthening / meiotic telomere clustering / 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 / establishment of protein-containing complex localization to telomere / Sensing of DNA Double Strand Breaks / peptidyl-serine autophosphorylation / positive regulation of telomere maintenance via telomere lengthening / meiotic telomere clustering / pre-B cell allelic exclusion / DNA-dependent protein kinase activity / extrinsic component of synaptic vesicle membrane / male meiotic nuclear division / histone mRNA catabolic process / 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 / V(D)J recombination / pexophagy / oocyte development / cellular response to X-ray / 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 / oligodendrocyte apoptotic process / negative regulation of miRNA processing / intrinsic apoptotic signaling pathway in response to hypoxia / regulation of fibroblast apoptotic process / 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 / DNA repair complex / circadian behavior / positive regulation of programmed necrotic cell death / T cell proliferation involved in immune response / regulation of mitochondrial membrane permeability involved in apoptotic process / histone deacetylase regulator activity / reciprocal meiotic recombination / RUNX3 regulates CDKN1A transcription / germ cell nucleus / homolactic fermentation / TP53 Regulates Transcription of Death Receptors and Ligands / TP53 regulates transcription of additional cell cycle genes whose exact role in the p53 pathway remain uncertain / Activation of PUMA and translocation to mitochondria / positive regulation of DNA damage response, signal transduction by p53 class mediator / negative regulation of glial cell proliferation / Regulation of TP53 Activity through Association with Co-factors / regulation of DNA damage response, signal transduction by p53 class mediator / negative regulation of neuroblast proliferation / 1-phosphatidylinositol-3-kinase 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) / mitochondrial DNA repair / T cell lineage commitment / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / Resolution of D-loop Structures through Holliday Junction Intermediates / HDR through Single Strand Annealing (SSA) / thymocyte apoptotic process / ER overload response / negative regulation of B cell proliferation / TP53 Regulates Transcription of Caspase Activators and Caspases / cellular response to stress / cardiac septum morphogenesis / mitotic spindle assembly checkpoint signaling / B cell lineage commitment / entrainment of circadian clock by photoperiod / positive regulation of double-strand break repair / response to ionizing radiation / negative regulation of mitophagy / Impaired BRCA2 binding to RAD51 / negative regulation of DNA replication / Zygotic genome activation (ZGA) / mitotic G2 DNA damage checkpoint signaling / Association of TriC/CCT with target proteins during biosynthesis / PI5P Regulates TP53 Acetylation / TP53 Regulates Transcription of Genes Involved in Cytochrome C Release / necroptotic process / positive regulation of release of cytochrome c from mitochondria / negative regulation of telomere maintenance via telomerase / SUMOylation of transcription factors / TP53 regulates transcription of several additional cell death genes whose specific roles in p53-dependent apoptosis remain uncertain Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 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 | 8oxm.cif.gz | 1.3 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb8oxm.ent.gz | 883.5 KB | Display | PDB format |
| PDBx/mmJSON format | 8oxm.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ox/8oxm ftp://data.pdbj.org/pub/pdb/validation_reports/ox/8oxm | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 17265MC ![]() 8oxoC ![]() 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 / 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) dimer activated by H2O2 and bound to Mg AMP-PNP and p53 substrate peptide Type: COMPLEX / 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 | 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: 3.3 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: 244.25 Å2 | ||||||||||||||||||||||||||||
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About Yorodumi



Homo sapiens (human)
United Kingdom, 3items
Citation






PDBj



































FIELD EMISSION GUN
