DNA-dependent protein kinase activity / positive regulation of DNA catabolic process / histone H2AXS139 kinase activity / establishment of RNA localization to telomere / positive regulation of telomerase catalytic core complex assembly / positive regulation of DNA damage response, signal transduction by p53 class mediator / establishment of protein-containing complex localization to telomere / cellular response to nitrosative stress / negative regulation of telomere capping / Sensing of DNA Double Strand Breaks ...DNA-dependent protein kinase activity / positive regulation of DNA catabolic process / histone H2AXS139 kinase activity / establishment of RNA localization to telomere / positive regulation of telomerase catalytic core complex assembly / positive regulation of DNA damage response, signal transduction by p53 class mediator / establishment of protein-containing complex localization to telomere / cellular response to nitrosative stress / negative regulation of telomere capping / Sensing of DNA Double Strand Breaks / positive regulation of telomere maintenance via telomere lengthening / regulation of microglial cell activation / meiotic telomere clustering / pre-B cell allelic exclusion / male meiotic nuclear division / histone mRNA catabolic process / female meiotic nuclear division / pexophagy / cellular response to X-ray / regulation of telomere maintenance via telomerase / peptidyl-serine autophosphorylation / DNA double-strand break processing / lipoprotein catabolic process / V(D)J recombination / regulation of autophagosome assembly / oocyte development / Impaired BRCA2 binding to PALB2 / Loss of function of TP53 in cancer due to loss of tetramerization ability / Regulation of TP53 Expression / reciprocal meiotic recombination / 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 / Activation of NOXA and translocation to mitochondria / negative regulation of pentose-phosphate shunt / ATP-dependent DNA/DNA annealing activity / negative regulation of helicase activity / regulation of cell cycle G2/M phase transition / intrinsic apoptotic signaling pathway in response to hypoxia / regulation of fibroblast apoptotic process / oxidative stress-induced premature senescence / oligodendrocyte apoptotic process / negative regulation of miRNA processing / positive regulation of thymocyte apoptotic process / regulation of tissue remodeling / glucose catabolic process to lactate via pyruvate / positive regulation of mitochondrial membrane permeability / negative regulation of mitophagy / DNA repair complex / positive regulation of programmed necrotic cell death / mRNA transcription / circadian behavior / bone marrow development / 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) / histone deacetylase regulator activity / germ cell nucleus / T cell lineage commitment / regulation of mitochondrial membrane permeability involved in apoptotic process / RUNX3 regulates CDKN1A transcription / regulation of DNA damage response, signal transduction by p53 class mediator / TP53 regulates transcription of additional cell cycle genes whose exact role in the p53 pathway remain uncertain / Resolution of D-loop Structures through Holliday Junction Intermediates / TP53 Regulates Transcription of Death Receptors and Ligands / Activation of PUMA and translocation to mitochondria / DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator / B cell lineage commitment / thymocyte apoptotic process / negative regulation of glial cell proliferation / HDR through Single Strand Annealing (SSA) / negative regulation of neuroblast proliferation / Regulation of TP53 Activity through Association with Co-factors / Impaired BRCA2 binding to RAD51 / 1-phosphatidylinositol-3-kinase activity / mitochondrial DNA repair / response to ionizing radiation / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / TP53 Regulates Transcription of Caspase Activators and Caspases / ER overload response / positive regulation of release of cytochrome c from mitochondria / negative regulation of DNA replication / positive regulation of cardiac muscle cell apoptotic process / mitotic spindle assembly checkpoint signaling / TP53 regulates transcription of several additional cell death genes whose specific roles in p53-dependent apoptosis remain uncertain / negative regulation of B cell proliferation / cardiac septum morphogenesis / entrainment of circadian clock by photoperiod / PI5P Regulates TP53 Acetylation / Association of TriC/CCT with target proteins during biosynthesis / mitotic G2 DNA damage checkpoint signaling / necroptotic process / Zygotic genome activation (ZGA) / positive regulation of execution phase of apoptosis / TP53 Regulates Transcription of Genes Involved in Cytochrome C Release / Presynaptic phase of homologous DNA pairing and strand exchange 類似検索 - 分子機能
ジャーナル: Sci Adv / 年: 2023 タイトル: Structural insights into the activation of ataxia-telangiectasia mutated by oxidative stress. 著者: Anna C Howes / Olga Perisic / Roger L Williams / 要旨: 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.
全体 : ATM(Q2971A) dimeric C-terminal region activated by H2O2 and bound...
全体
名称: ATM(Q2971A) dimeric C-terminal region activated by H2O2 and bound to Mg AMP-PNP and p53 substrate peptide
要素
複合体: ATM(Q2971A) dimeric C-terminal region activated by H2O2 and bound to Mg AMP-PNP and p53 substrate peptide
タンパク質・ペプチド: Cellular tumor antigen p53
タンパク質・ペプチド: Serine-protein kinase ATM
リガンド: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
リガンド: MAGNESIUM ION
リガンド: ZINC ION
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超分子 #1: ATM(Q2971A) dimeric C-terminal region activated by H2O2 and bound...
超分子
名称: ATM(Q2971A) dimeric C-terminal region activated by H2O2 and bound to Mg AMP-PNP and p53 substrate peptide タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 詳細: 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.