- EMDB-10695: Structure of human cGAS (K394E) bound to the nucleosome (focused ... -
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基本情報
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データベース: EMDB / ID: EMD-10695
タイトル
Structure of human cGAS (K394E) bound to the nucleosome (focused refinement of cGAS-NCP subcomplex)
マップデータ
試料
複合体: Cryo EM structure of cGAS-NCP1 complex
複合体: Protein
タンパク質・ペプチド: x 8種
複合体: DNA
DNA: x 2種
複合体: Histone H4
リガンド: x 2種
機能・相同性
機能・相同性情報
cyclic GMP-AMP synthase / 2',3'-cyclic GMP-AMP synthase activity / STING mediated induction of host immune responses / paracrine signaling / poly-ADP-D-ribose modification-dependent protein binding / regulation of immunoglobulin production / cGAS/STING signaling pathway / pattern recognition receptor signaling pathway / regulation of T cell activation / cytoplasmic pattern recognition receptor signaling pathway ...cyclic GMP-AMP synthase / 2',3'-cyclic GMP-AMP synthase activity / STING mediated induction of host immune responses / paracrine signaling / poly-ADP-D-ribose modification-dependent protein binding / regulation of immunoglobulin production / cGAS/STING signaling pathway / pattern recognition receptor signaling pathway / regulation of T cell activation / cytoplasmic pattern recognition receptor signaling pathway / negative regulation of cGAS/STING signaling pathway / cGMP-mediated signaling / cellular response to exogenous dsRNA / positive regulation of type I interferon production / Replacement of protamines by nucleosomes in the male pronucleus / arachidonate 15-lipoxygenase / arachidonate 15-lipoxygenase activity / nucleosome binding / Packaging Of Telomere Ends / negative regulation of double-strand break repair via homologous recombination / lipoxygenase pathway / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / arachidonate metabolic process / Chromatin modifying enzymes / lipid oxidation / Deposition of new CENPA-containing nucleosomes at the centromere / hepoxilin biosynthetic process / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / linoleic acid metabolic process / Meiotic synapsis / Inhibition of DNA recombination at telomere / positive regulation of defense response to virus by host / nucleosomal DNA binding / RNA Polymerase I Promoter Opening / phosphatidylinositol-4,5-bisphosphate binding / Assembly of the ORC complex at the origin of replication / activation of innate immune response / Interleukin-7 signaling / DNA methylation / cAMP-mediated signaling / Condensation of Prophase Chromosomes / HCMV Late Events / SIRT1 negatively regulates rRNA expression / Chromatin modifications during the maternal to zygotic transition (MZT) / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / molecular condensate scaffold activity / Defective pyroptosis / Meiotic recombination / innate immune response in mucosa / DNA Damage/Telomere Stress Induced Senescence / HDACs deacetylate histones / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / determination of adult lifespan / Transcriptional regulation by small RNAs / Transcriptional regulation of granulopoiesis / HDMs demethylate histones / Formation of the beta-catenin:TCF transactivating complex / HCMV Early Events / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / G2/M DNA damage checkpoint / NoRC negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / PKMTs methylate histone lysines / B-WICH complex positively regulates rRNA expression / heterochromatin formation / RMTs methylate histone arginines / Pre-NOTCH Transcription and Translation / Metalloprotease DUBs / Activation of anterior HOX genes in hindbrain development during early embryogenesis / structural constituent of chromatin / positive regulation of cellular senescence / UCH proteinases / nucleosome / antimicrobial humoral immune response mediated by antimicrobial peptide / Factors involved in megakaryocyte development and platelet production / Processing of DNA double-strand break ends / nucleosome assembly / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / E3 ubiquitin ligases ubiquitinate target proteins / double-stranded DNA binding / Senescence-Associated Secretory Phenotype (SASP) / RUNX1 regulates transcription of genes involved in differentiation of HSCs / HATs acetylate histones / site of double-strand break / antibacterial humoral response / Oxidative Stress Induced Senescence / defense response to virus / defense response to Gram-negative bacterium / Estrogen-dependent gene expression / killing of cells of another organism / nuclear body / Ub-specific processing proteases / defense response to Gram-positive bacterium / protein heterodimerization activity / Amyloid fiber formation 類似検索 - 分子機能
ジャーナル: Nature / 年: 2020 タイトル: Structural mechanism of cGAS inhibition by the nucleosome. 著者: Ganesh R Pathare / Alexiane Decout / Selene Glück / Simone Cavadini / Kristina Makasheva / Ruud Hovius / Georg Kempf / Joscha Weiss / Zuzanna Kozicka / Baptiste Guey / Pauline Melenec / Beat ...著者: Ganesh R Pathare / Alexiane Decout / Selene Glück / Simone Cavadini / Kristina Makasheva / Ruud Hovius / Georg Kempf / Joscha Weiss / Zuzanna Kozicka / Baptiste Guey / Pauline Melenec / Beat Fierz / Nicolas H Thomä / Andrea Ablasser / 要旨: The DNA sensor cyclic GMP-AMP synthase (cGAS) initiates innate immune responses following microbial infection, cellular stress and cancer. Upon activation by double-stranded DNA, cytosolic cGAS ...The DNA sensor cyclic GMP-AMP synthase (cGAS) initiates innate immune responses following microbial infection, cellular stress and cancer. Upon activation by double-stranded DNA, cytosolic cGAS produces 2'3' cGMP-AMP, which triggers the induction of inflammatory cytokines and type I interferons . cGAS is also present inside the cell nucleus, which is replete with genomic DNA, where chromatin has been implicated in restricting its enzymatic activity. However, the structural basis for inhibition of cGAS by chromatin remains unknown. Here we present the cryo-electron microscopy structure of human cGAS bound to nucleosomes. cGAS makes extensive contacts with both the acidic patch of the histone H2A-H2B heterodimer and nucleosomal DNA. The structural and complementary biochemical analysis also find cGAS engaged to a second nucleosome in trans. Mechanistically, binding of the nucleosome locks cGAS into a monomeric state, in which steric hindrance suppresses spurious activation by genomic DNA. We find that mutations to the cGAS-acidic patch interface are sufficient to abolish the inhibitory effect of nucleosomes in vitro and to unleash the activity of cGAS on genomic DNA in living cells. Our work uncovers the structural basis of the interaction between cGAS and chromatin and details a mechanism that permits self-non-self discrimination of genomic DNA by cGAS.