EMDB-30267: Human cGAS-nucleosome complex

Basic information

• Entry: Database: EMDB / ID: EMD-30267
• Title: Human cGAS-nucleosome complex

Sample

• Complex: Human cGAS-nucleosome complex
  • Protein or peptide: Histone H3.1
  • Protein or peptide: Histone H4
  • Protein or peptide: Histone H2A type 1-B/E
  • Protein or peptide: Histone H2B type 1-J
  • DNA: DNA (145-MER)
  • DNA: DNA (145-MER)
  • Protein or peptide: Cyclic GMP-AMP synthase
• Ligand: ZINC ION

• Keywords: complex / chromatin / NTase / innate immunity / immunity / nucleosome / cGAS / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex

Function / homology

Function:

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 / negative regulation of tumor necrosis factor-mediated signaling pathway / positive regulation of type I interferon production / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / negative regulation of double-strand break repair via homologous recombination / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / heterochromatin organization / epigenetic regulation of gene expression / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / nucleosome binding / Deposition of new CENPA-containing nucleosomes at the centromere / nucleosomal DNA binding / positive regulation of defense response to virus by host / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Inhibition of DNA recombination at telomere / Meiotic synapsis / phosphatidylinositol-4,5-bisphosphate binding / telomere organization / activation of innate immune response / RNA Polymerase I Promoter Opening / Interleukin-7 signaling / Assembly of the ORC complex at the origin of replication / SUMOylation of chromatin organization proteins / cAMP-mediated signaling / DNA methylation / Condensation of Prophase Chromosomes / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / SIRT1 negatively regulates rRNA expression / Chromatin modifications during the maternal to zygotic transition (MZT) / HCMV Late Events / molecular condensate scaffold activity / PRC2 methylates histones and DNA / innate immune response in mucosa / Defective pyroptosis / HDACs deacetylate histones / determination of adult lifespan / RNA Polymerase I Promoter Escape / lipopolysaccharide binding / Nonhomologous End-Joining (NHEJ) / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / NoRC negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / B-WICH complex positively regulates rRNA expression / G2/M DNA damage checkpoint / HDMs demethylate histones / DNA Damage/Telomere Stress Induced Senescence / Metalloprotease DUBs / PKMTs methylate histone lysines / Meiotic recombination / RMTs methylate histone arginines / Pre-NOTCH Transcription and Translation / Activation of anterior HOX genes in hindbrain development during early embryogenesis / HCMV Early Events / Transcriptional regulation of granulopoiesis / structural constituent of chromatin / antimicrobial humoral immune response mediated by antimicrobial peptide / UCH proteinases / positive regulation of cellular senescence / nucleosome / nucleosome assembly / E3 ubiquitin ligases ubiquitinate target proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / RUNX1 regulates transcription of genes involved in differentiation of HSCs / site of double-strand break / Factors involved in megakaryocyte development and platelet production / HATs acetylate histones / gene expression / Processing of DNA double-strand break ends / antibacterial humoral response / Senescence-Associated Secretory Phenotype (SASP) / double-stranded DNA binding / Oxidative Stress Induced Senescence / defense response to Gram-negative bacterium / defense response to virus / Estrogen-dependent gene expression / killing of cells of another organism / chromosome, telomeric region / nuclear body / Ub-specific processing proteases

Domain/homology:

Mab-21-like, nucleotidyltransferase domain / Mab-21-like, HhH/H2TH-like domain / Mab-21 protein HhH/H2TH-like domain / Mab-21 protein nucleotidyltransferase domain / Mab-21-like / Mab-21 / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Histone-fold

Component:

Histone H2A type 1-B/E / Histone H2B type 1-J / Histone H4 / Histone H3.1 / Cyclic GMP-AMP synthase

• Biological species: Homo sapiens (human) / synthetic construct (others)
• Method: single particle reconstruction / cryo EM / Resolution: 3.9 Å
• Authors: Kujirai T / Zierhut C

Funding support

Japan, 6 items

Organization	Grant number	Country
Japan Society for the Promotion of Science (JSPS)	JP17H01408	Japan
Japan Society for the Promotion of Science (JSPS)	JP18H05534	Japan
Japan Society for the Promotion of Science (JSPS)	JP19K06522	Japan
Japan Science and Technology	JPMJCR16G1	Japan
Japan Agency for Medical Research and Development (AMED)	JP20am0101076	Japan
Japan Science and Technology	JPMJER1901	Japan

• Citation: Journal: Science / Year: 2020; Title: Structural basis for the inhibition of cGAS by nucleosomes.; Authors: Tomoya Kujirai / Christian Zierhut / Yoshimasa Takizawa / Ryan Kim / Lumi Negishi / Nobuki Uruma / Seiya Hirai / Hironori Funabiki / Hitoshi Kurumizaka / ; Abstract: The cyclic guanosine monophosphate-adenosine monophosphate synthase (cGAS) senses invasion of pathogenic DNA and stimulates inflammatory signaling, autophagy, and apoptosis. Organization of host DNA into nucleosomes was proposed to limit cGAS autoinduction, but the underlying mechanism was unknown. Here, we report the structural basis for this inhibition. In the cryo-electron microscopy structure of the human cGAS-nucleosome core particle (NCP) complex, two cGAS monomers bridge two NCPs by binding the acidic patch of the histone H2A-H2B dimer and nucleosomal DNA. In this configuration, all three known cGAS DNA binding sites, required for cGAS activation, are repurposed or become inaccessible, and cGAS dimerization, another prerequisite for activation, is inhibited. Mutating key residues linking cGAS and the acidic patch alleviates nucleosomal inhibition. This study establishes a structural framework for why cGAS is silenced on chromatinized self-DNA.

History

Deposition	May 1, 2020	-
Header (metadata) release	Sep 16, 2020	-
Map release	Sep 16, 2020	-
Update	Mar 27, 2024	-
Current status	Mar 27, 2024	Processing site: PDBj / Status: Released