establishment of RNA localization to telomere / positive regulation of telomerase catalytic core complex assembly / negative regulation of telomere capping / Sensing of DNA Double Strand Breaks / cellular response to nitrosative stress / peptidyl-serine autophosphorylation / establishment of protein-containing complex localization to telomere / 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 / negative regulation of telomere capping / Sensing of DNA Double Strand Breaks / cellular response to nitrosative stress / peptidyl-serine autophosphorylation / establishment of protein-containing complex localization to telomere / meiotic telomere clustering / positive regulation of telomere maintenance via telomere lengthening / pre-B cell allelic exclusion / male meiotic nuclear division / histone mRNA catabolic process / extrinsic component of synaptic vesicle membrane / regulation of telomere maintenance via telomerase / female meiotic nuclear division / DNA double-strand break processing / DNA-dependent protein kinase activity / histone H2AXS139 kinase activity / lipoprotein catabolic process / 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 / reciprocal meiotic recombination / 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 / intrinsic apoptotic signaling pathway in response to hypoxia / oligodendrocyte apoptotic process / negative regulation of miRNA processing / positive regulation of thymocyte apoptotic process / oxidative stress-induced premature senescence / regulation of tissue remodeling / positive regulation of mitochondrial membrane permeability / mRNA transcription / positive regulation of programmed necrotic cell death / bone marrow development / 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 / TP53 regulates transcription of additional cell cycle genes whose exact role in the p53 pathway remain uncertain / Activation of PUMA and translocation to mitochondria / 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) / regulation of DNA damage response, signal transduction by p53 class mediator / histone deacetylase regulator activity / Resolution of D-loop Structures through Holliday Junction Intermediates / 1-phosphatidylinositol-3-kinase activity / negative regulation of glial cell proliferation / Regulation of TP53 Activity through Association with Co-factors / HDR through Single Strand Annealing (SSA) / negative regulation of neuroblast proliferation / mitochondrial DNA repair / T cell lineage commitment / response to ionizing radiation / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / positive regulation of double-strand break repair / ER overload response / Impaired BRCA2 binding to RAD51 / mitotic spindle assembly checkpoint signaling / thymocyte apoptotic process / negative regulation of B cell proliferation / B cell lineage commitment / TP53 Regulates Transcription of Caspase Activators and Caspases / negative regulation of mitophagy / cellular response to stress / cardiac septum morphogenesis / negative regulation of DNA replication / entrainment of circadian clock by photoperiod / PI5P Regulates TP53 Acetylation / mitotic G2 DNA damage checkpoint signaling / negative regulation of telomere maintenance via telomerase / Zygotic genome activation (ZGA) / positive regulation of release of cytochrome c from mitochondria / 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 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.