+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-30340 | ||||||||||||||||||||||||
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タイトル | Structure of the 2:2 cGAS-nucleosome complex | ||||||||||||||||||||||||
マップデータ | |||||||||||||||||||||||||
試料 |
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キーワード | cGAS / nucleosome / inhibition / cryo-EM / IMMUNE SYSTEM / STRUCTURAL PROTEIN-TRANSFERASE-DNA complex | ||||||||||||||||||||||||
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 / protein localization to CENP-A containing chromatin / CENP-A containing nucleosome / negative regulation of tumor necrosis factor-mediated signaling pathway / 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 / telomere organization / 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 / epigenetic regulation of gene expression / 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 / lipopolysaccharide binding / 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 / gene expression / antibacterial humoral response / Oxidative Stress Induced Senescence / defense response to virus / defense response to Gram-negative bacterium 類似検索 - 分子機能 | ||||||||||||||||||||||||
生物種 | Homo sapiens (ヒト) | ||||||||||||||||||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.9 Å | ||||||||||||||||||||||||
データ登録者 | Cao D / Han X | ||||||||||||||||||||||||
資金援助 | 中国, 7件
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引用 | ジャーナル: Cell Res / 年: 2020 タイトル: Structural basis for nucleosome-mediated inhibition of cGAS activity. 著者: Duanfang Cao / Xiaonan Han / Xiaoyi Fan / Rui-Ming Xu / Xinzheng Zhang / 要旨: Activation of cyclic GMP-AMP synthase (cGAS) through sensing cytosolic double stranded DNA (dsDNA) plays a pivotal role in innate immunity against exogenous infection as well as cellular regulation ...Activation of cyclic GMP-AMP synthase (cGAS) through sensing cytosolic double stranded DNA (dsDNA) plays a pivotal role in innate immunity against exogenous infection as well as cellular regulation under stress. Aberrant activation of cGAS induced by self-DNA is related to autoimmune diseases. cGAS accumulates at chromosomes during mitosis or spontaneously in the nucleus. Binding of cGAS to the nucleosome competitively attenuates the dsDNA-mediated cGAS activation, but the molecular mechanism of the attenuation is still poorly understood. Here, we report two cryo-electron microscopy structures of cGAS-nucleosome complexes. The structures reveal that cGAS interacts with the nucleosome as a monomer, forming 1:1 and 2:2 complexes, respectively. cGAS contacts the nucleosomal acidic patch formed by the H2A-H2B heterodimer through the dsDNA-binding site B in both complexes, and could interact with the DNA from the other symmetrically placed nucleosome via the dsDNA-binding site C in the 2:2 complex. The bound nucleosome inhibits the activation of cGAS through blocking the interaction of cGAS with ligand dsDNA and disrupting cGAS dimerization. R236A or R255A mutation of cGAS impairs the binding between cGAS and the nucleosome, and largely relieves the nucleosome-mediated inhibition of cGAS activity. Our study provides structural insights into the inhibition of cGAS activity by the nucleosome, and advances the understanding of the mechanism by which hosts avoid the autoimmune attack caused by cGAS. | ||||||||||||||||||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_30340.map.gz | 85.2 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-30340-v30.xml emd-30340.xml | 19.3 KB 19.3 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_30340.png | 67.6 KB | ||
Filedesc metadata | emd-30340.cif.gz | 6.1 KB | ||
その他 | emd_30340_additional_1.map.gz | 85.3 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-30340 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30340 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_30340.map.gz / 形式: CCP4 / 大きさ: 98.9 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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ボクセルのサイズ | X=Y=Z: 1 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-追加マップ: #1
ファイル | emd_30340_additional_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : the cGAS-nucleosome complex in 2:2 molar ratio
全体 | 名称: the cGAS-nucleosome complex in 2:2 molar ratio |
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要素 |
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-超分子 #1: the cGAS-nucleosome complex in 2:2 molar ratio
超分子 | 名称: the cGAS-nucleosome complex in 2:2 molar ratio / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#7 |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Histone H3.1
分子 | 名称: Histone H3.1 / タイプ: protein_or_peptide / ID: 1 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 11.504476 KDa |
組換発現 | 生物種: Escherichia coli (大腸菌) |
配列 | 文字列: PHRYRPGTVA LREIRRYQKS TELLIRKLPF QRLVREIAQD FKTDLRFQSS AVMALQEACE AYLVGLFEDT NLCAIHAKRV TIMPKDIQL ARRIRGERA UniProtKB: Histone H3.1 |
-分子 #2: Histone H4
分子 | 名称: Histone H4 / タイプ: protein_or_peptide / ID: 2 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 9.067586 KDa |
組換発現 | 生物種: Escherichia coli (大腸菌) |
配列 | 文字列: RDNIQGITKP AIRRLARRGG VKRISGLIYE ETRGVLKVFL ENVIRDAVTY TEHAKRKTVT AMDVVYALKR QGRTLYGFGG |
-分子 #3: Histone H2A type 1-B/E
分子 | 名称: Histone H2A type 1-B/E / タイプ: protein_or_peptide / ID: 3 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 11.308161 KDa |
組換発現 | 生物種: Escherichia coli (大腸菌) |
配列 | 文字列: KTRSSRAGLQ FPVGRVHRLL RKGNYSERVG AGAPVYLAAV LEYLTAEILE LAGNAARDNK KTRIIPRHLQ LAIRNDEELN KLLGRVTIA QGGVLPNIQA VLLP UniProtKB: Histone H2A type 1-B/E |
-分子 #4: Histone H2B type 1-J
分子 | 名称: Histone H2B type 1-J / タイプ: protein_or_peptide / ID: 4 / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 10.334827 KDa |
組換発現 | 生物種: Escherichia coli (大腸菌) |
配列 | 文字列: SRKESYSIYV YKVLKQVHPD TGISSKAMGI MNSFVNDIFE RIAGEASRLA HYNKRSTITS REIQTAVRLL LPGELAKHAV SEGTKAVTK YTSA UniProtKB: Histone H2B type 1-J |
-分子 #7: Cyclic GMP-AMP synthase
分子 | 名称: Cyclic GMP-AMP synthase / タイプ: protein_or_peptide / ID: 7 / コピー数: 2 / 光学異性体: LEVO / EC番号: cyclic GMP-AMP synthase |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 42.75927 KDa |
組換発現 | 生物種: Escherichia coli (大腸菌) |
配列 | 文字列: DAAPGASKLR AVLEKLKLSR DDISTAAGMV KGVVDHLLLR LKCDSAFRGV GLLNTGSYYE HVKISAPNEF DVMFKLEVPR IQLEEYSNT RAYYFVKFKR NPKENPLSQF LEGEILSASK MLSKFRKIIK EEINDIKDTD VIMKRKRGGS PAVTLLISEK I SVDITLAL ...文字列: DAAPGASKLR AVLEKLKLSR DDISTAAGMV KGVVDHLLLR LKCDSAFRGV GLLNTGSYYE HVKISAPNEF DVMFKLEVPR IQLEEYSNT RAYYFVKFKR NPKENPLSQF LEGEILSASK MLSKFRKIIK EEINDIKDTD VIMKRKRGGS PAVTLLISEK I SVDITLAL ESKSSWPAST QEGLRIQNWL SAKVRKQLRL KPFYLVPKHA KEGNGFQEET WRLSFSHIEK EILNNHGKSK TC CENKEEK CCRKDCLKLM KYLLEQLKER FKDKKHLDKF SSYHVKTAFF HVCTQNPQDS QWDRKDLGLC FDNCVTYFLQ CLR TEKLEN YFIPEFNLFS SNLIDKRSKE FLTKQIEYER NNEFPVFDEF UniProtKB: Cyclic GMP-AMP synthase |
-分子 #5: DNA (147-MER)
分子 | 名称: DNA (147-MER) / タイプ: dna / ID: 5 / コピー数: 2 / 分類: DNA |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 45.604047 KDa |
配列 | 文字列: (DA)(DC)(DA)(DG)(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) ...文字列: (DA)(DC)(DA)(DG)(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) (DC)(DC)(DA)(DG) |
-分子 #6: DNA (147-MER)
分子 | 名称: DNA (147-MER) / タイプ: dna / ID: 6 / コピー数: 2 / 分類: DNA |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 45.145754 KDa |
配列 | 文字列: (DC)(DT)(DG)(DG)(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) ...文字列: (DC)(DT)(DG)(DG)(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) (DC)(DT)(DG)(DT) |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TECNAI ARCTICA |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 200 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | モデル: Talos Arctica / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: PDB ENTRY |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 4.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 107374 |
初期 角度割当 | タイプ: PROJECTION MATCHING |
最終 角度割当 | タイプ: PROJECTION MATCHING |