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- EMDB-30267: Human cGAS-nucleosome complex -

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Basic information

Entry
Database: EMDB / ID: EMD-30267
TitleHuman cGAS-nucleosome complex
Map data
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
Keywordscomplex / chromatin / NTase / innate immunity / immunity / nucleosome / cGAS / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex
Function / homology
Function and homology information


2',3'-cyclic GMP-AMP synthase activity / cyclic GMP-AMP synthase / 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 / regulation of T cell activation / pattern recognition receptor signaling pathway / cGMP-mediated signaling ...2',3'-cyclic GMP-AMP synthase activity / cyclic GMP-AMP synthase / 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 / regulation of T cell activation / pattern recognition receptor signaling pathway / cGMP-mediated signaling / cytoplasmic pattern recognition receptor signaling pathway / negative regulation of cGAS/STING signaling pathway / cellular response to exogenous dsRNA / negative regulation of tumor necrosis factor-mediated signaling pathway / positive regulation of type I interferon production / negative regulation of double-strand break repair via homologous recombination / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / cAMP-mediated signaling / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / nucleosome binding / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / positive regulation of defense response to virus by host / phosphatidylinositol-4,5-bisphosphate binding / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Deposition of new CENPA-containing nucleosomes at the centromere / telomere organization / Inhibition of DNA recombination at telomere / Meiotic synapsis / Interleukin-7 signaling / RNA Polymerase I Promoter Opening / activation of innate immune response / Assembly of the ORC complex at the origin of replication / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / innate immune response in mucosa / SUMOylation of chromatin organization proteins / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / HCMV Late Events / SIRT1 negatively regulates rRNA expression / epigenetic regulation of gene expression / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / determination of adult lifespan / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / lipopolysaccharide binding / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / molecular condensate scaffold activity / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / G2/M DNA damage checkpoint / HDMs demethylate histones / NoRC negatively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / B-WICH complex positively regulates rRNA expression / PKMTs methylate histone lysines / Meiotic recombination / Pre-NOTCH Transcription and Translation / Metalloprotease DUBs / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcriptional regulation of granulopoiesis / HCMV Early Events / antimicrobial humoral immune response mediated by antimicrobial peptide / positive regulation of cellular senescence / structural constituent of chromatin / antibacterial humoral response / UCH proteinases / nucleosome / heterochromatin formation / E3 ubiquitin ligases ubiquitinate target proteins / nucleosome assembly / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / site of double-strand break / HATs acetylate histones / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Factors involved in megakaryocyte development and platelet production / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / double-stranded DNA binding / defense response to Gram-negative bacterium / Oxidative Stress Induced Senescence / gene expression / killing of cells of another organism / defense response to virus / Estrogen-dependent gene expression
Similarity search - Function
Mab-21-like, nucleotidyltransferase domain / Mab-21 protein nucleotidyltransferase domain / Mab-21-like / Mab-21-like, HhH/H2TH-like domain / Mab-21 protein HhH/H2TH-like domain / Mab-21 / : / Histone H2B signature. / Histone H2B / Histone H2B ...Mab-21-like, nucleotidyltransferase domain / Mab-21 protein nucleotidyltransferase domain / Mab-21-like / Mab-21-like, HhH/H2TH-like domain / Mab-21 protein HhH/H2TH-like domain / 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 / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / 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
Similarity search - Domain/homology
Histone H2A type 1-B/E / Histone H2B type 1-J / Histone H4 / Histone H3.1 / Cyclic GMP-AMP synthase
Similarity search - Component
Biological speciesHomo sapiens (human) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsKujirai T / Zierhut C
Funding support Japan, 6 items
OrganizationGrant numberCountry
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 TechnologyJPMJCR16G1 Japan
Japan Agency for Medical Research and Development (AMED)JP20am0101076 Japan
Japan Science and TechnologyJPMJER1901 Japan
CitationJournal: 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 ...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
DepositionMay 1, 2020-
Header (metadata) releaseSep 16, 2020-
Map releaseSep 16, 2020-
UpdateMar 27, 2024-
Current statusMar 27, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.0119
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.0119
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7c0m
  • Surface level: 0.0119
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_30267.png

Downloads & links

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Map

FileDownload / File: emd_30267.map.gz / Format: CCP4 / Size: 59.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.05 Å/pix.
x 250 pix.
= 262.5 Å		1.05 Å/pix.
x 250 pix.
= 262.5 Å		1.05 Å/pix.
x 250 pix.
= 262.5 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.05 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.0119 / Movie #1: 0.0119
Minimum - Maximum-0.015324667 - 0.058220237
Average (Standard dev.)0.0008259152 (±0.0035567656)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions250250250
Spacing250250250
CellA=B=C: 262.5 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.051.051.05
M x/y/z250250250
origin x/y/z0.0000.0000.000
length x/y/z262.500262.500262.500
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ400400400
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS250250250
D min/max/mean-0.0150.0580.001

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Supplemental data

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Sample components

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Entire : Human cGAS-nucleosome complex

EntireName: Human cGAS-nucleosome complex
Components
  • 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

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Supramolecule #1: Human cGAS-nucleosome complex

SupramoleculeName: Human cGAS-nucleosome complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Histone H3.1

MacromoleculeName: Histone H3.1 / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 15.719445 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
GSHMARTKQT ARKSTGGKAP RKQLATKAAR KSAPATGGVK KPHRYRPGTV ALREIRRYQK STELLIRKLP FQRLVREIAQ DFKTDLRFQ SSAVMALQEA CEAYLVGLFE DTNLCAIHAK RVTIMPKDIQ LARRIRGERA

UniProtKB: Histone H3.1

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Macromolecule #2: Histone H4

MacromoleculeName: Histone H4 / type: protein_or_peptide / ID: 2 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.676703 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
GSHMSGRGKG GKGLGKGGAK RHRKVLRDNI QGITKPAIRR LARRGGVKRI SGLIYEETRG VLKVFLENVI RDAVTYTEHA KRKTVTAMD VVYALKRQGR TLYGFGG

UniProtKB: Histone H4

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Macromolecule #3: Histone H2A type 1-B/E

MacromoleculeName: Histone H2A type 1-B/E / type: protein_or_peptide / ID: 3 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 14.447825 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
GSHMSGRGKQ GGKARAKAKT RSSRAGLQFP VGRVHRLLRK GNYSERVGAG APVYLAAVLE YLTAEILELA GNAARDNKKT RIIPRHLQL AIRNDEELNK LLGRVTIAQG GVLPNIQAVL LPKKTESHHK AKGK

UniProtKB: Histone H2A type 1-B/E

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Macromolecule #4: Histone H2B type 1-J

MacromoleculeName: Histone H2B type 1-J / type: protein_or_peptide / ID: 4 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 14.217516 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
GSHMPEPAKS APAPKKGSKK AVTKAQKKDG KKRKRSRKES YSIYVYKVLK QVHPDTGISS KAMGIMNSFV NDIFERIAGE ASRLAHYNK RSTITSREIQ TAVRLLLPGE LAKHAVSEGT KAVTKYTSAK

UniProtKB: Histone H2B type 1-J

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Macromolecule #7: Cyclic GMP-AMP synthase

MacromoleculeName: Cyclic GMP-AMP synthase / type: protein_or_peptide / ID: 7 / Number of copies: 2 / Enantiomer: LEVO / EC number: cyclic GMP-AMP synthase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 44.435191 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: GSPILVRRDA APGASKLRAV LEKLKLSRDD ISTAAGMVKG VVDHLLLRLK CDSAFRGVGL LNTGSYYEHV KISAPNEFDV MFKLEVPRI QLEEYSNTRA YYFVKFKRNP KENPLSQFLE GEILSASKML SKFRKIIKEE INDIKDTDVI MKRKRGGSPA V TLLISEKI ...String:
GSPILVRRDA APGASKLRAV LEKLKLSRDD ISTAAGMVKG VVDHLLLRLK CDSAFRGVGL LNTGSYYEHV KISAPNEFDV MFKLEVPRI QLEEYSNTRA YYFVKFKRNP KENPLSQFLE GEILSASKML SKFRKIIKEE INDIKDTDVI MKRKRGGSPA V TLLISEKI SVDITLALES KSSWPASTQE GLRIQNWLSA KVRKQLRLKP FYLVPKHAKE GNGFQEETWR LSFSHIEKEI LN NHGKSKT CCENKEEKCC RKDCLKLMKY LLEQLKERFK DKKHLDKFSS YHVKTAFFHV CTQNPQDSQW DRKDLGLCFD NCV TYFLQC LRTEKLENYF IPEFNLFSSN LIDKRSKEFL TKQIEYERNN EFPVFDEFEN LYFQ

UniProtKB: Cyclic GMP-AMP synthase

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Macromolecule #5: DNA (145-MER)

MacromoleculeName: DNA (145-MER) / type: dna / ID: 5 / Number of copies: 2 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 44.520383 KDa
SequenceString: (DA)(DT)(DC)(DA)(DG)(DA)(DA)(DT)(DC)(DC) (DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA)(DG) (DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA)(DA) (DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT)(DA)(DG) (DA) (DC)(DA)(DG)(DC)(DT)(DC) ...String:
(DA)(DT)(DC)(DA)(DG)(DA)(DA)(DT)(DC)(DC) (DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA)(DG) (DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA)(DA) (DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT)(DA)(DG) (DA) (DC)(DA)(DG)(DC)(DT)(DC)(DT)(DA) (DG)(DC)(DA)(DC)(DC)(DG)(DC)(DT)(DT)(DA) (DA)(DA) (DC)(DG)(DC)(DA)(DC)(DG)(DT) (DA)(DC)(DG)(DC)(DG)(DC)(DT)(DG)(DT)(DC) (DC)(DC)(DC) (DC)(DG)(DC)(DG)(DT)(DT) (DT)(DT)(DA)(DA)(DC)(DC)(DG)(DC)(DC)(DA) (DA)(DG)(DG)(DG) (DG)(DA)(DT)(DT)(DA) (DC)(DT)(DC)(DC)(DC)(DT)(DA)(DG)(DT)(DC) (DT)(DC)(DC)(DA)(DG) (DG)(DC)(DA)(DC) (DG)(DT)(DG)(DT)(DC)(DA)(DG)(DA)(DT)(DA) (DT)(DA)(DT)(DA)(DC)(DA) (DT)(DC)(DG) (DA)(DT)

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Macromolecule #6: DNA (145-MER)

MacromoleculeName: DNA (145-MER) / type: dna / ID: 6 / Number of copies: 2 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 44.99166 KDa
SequenceString: (DA)(DT)(DC)(DG)(DA)(DT)(DG)(DT)(DA)(DT) (DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC)(DA) (DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG)(DG) (DA)(DG)(DA)(DC)(DT)(DA)(DG)(DG)(DG)(DA) (DG) (DT)(DA)(DA)(DT)(DC)(DC) ...String:
(DA)(DT)(DC)(DG)(DA)(DT)(DG)(DT)(DA)(DT) (DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC)(DA) (DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG)(DG) (DA)(DG)(DA)(DC)(DT)(DA)(DG)(DG)(DG)(DA) (DG) (DT)(DA)(DA)(DT)(DC)(DC)(DC)(DC) (DT)(DT)(DG)(DG)(DC)(DG)(DG)(DT)(DT)(DA) (DA)(DA) (DA)(DC)(DG)(DC)(DG)(DG)(DG) (DG)(DG)(DA)(DC)(DA)(DG)(DC)(DG)(DC)(DG) (DT)(DA)(DC) (DG)(DT)(DG)(DC)(DG)(DT) (DT)(DT)(DA)(DA)(DG)(DC)(DG)(DG)(DT)(DG) (DC)(DT)(DA)(DG) (DA)(DG)(DC)(DT)(DG) (DT)(DC)(DT)(DA)(DC)(DG)(DA)(DC)(DC)(DA) (DA)(DT)(DT)(DG)(DA) (DG)(DC)(DG)(DG) (DC)(DC)(DT)(DC)(DG)(DG)(DC)(DA)(DC)(DC) (DG)(DG)(DG)(DA)(DT)(DT) (DC)(DT)(DG) (DA)(DT)

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Macromolecule #8: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 8 / Number of copies: 2 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 64.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: INSILICO MODEL
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 160075
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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