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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 8yax | ||||||
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| タイトル | SARS-CoV-2 DMV nsp3-4 pore complex (full-pore) | ||||||
要素 |
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キーワード | VIRAL PROTEIN / Double membrane vesicle / pore complex / nsp3 / nsp4 / RNA transport | ||||||
| 機能・相同性 | 機能・相同性情報protein guanylyltransferase activity / RNA endonuclease activity producing 3'-phosphomonoesters, hydrolytic mechanism / 5'-3' RNA helicase activity / 付加脱離酵素(リアーゼ); P-Oリアーゼ類; - / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Maturation of replicase proteins / TRAF3-dependent IRF activation pathway / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs ...protein guanylyltransferase activity / RNA endonuclease activity producing 3'-phosphomonoesters, hydrolytic mechanism / 5'-3' RNA helicase activity / 付加脱離酵素(リアーゼ); P-Oリアーゼ類; - / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Maturation of replicase proteins / TRAF3-dependent IRF activation pathway / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs / snRNP Assembly / Translation of Replicase and Assembly of the Replication Transcription Complex / Replication of the SARS-CoV-2 genome / 加水分解酵素; エステル加水分解酵素; 5'-リン酸モノエステル産生エキソリボヌクレアーゼ / double membrane vesicle viral factory outer membrane / SARS coronavirus main proteinase / host cell endoplasmic reticulum-Golgi intermediate compartment / host cell endosome / 3'-5'-RNA exonuclease activity / 5'-3' DNA helicase activity / symbiont-mediated degradation of host mRNA / mRNA guanylyltransferase / symbiont-mediated suppression of host ISG15-protein conjugation / symbiont-mediated suppression of host toll-like receptor signaling pathway / G-quadruplex RNA binding / mRNA guanylyltransferase activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / omega peptidase activity / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 / DNA helicase / symbiont-mediated suppression of host NF-kappaB cascade / SARS-CoV-2 modulates host translation machinery / symbiont-mediated perturbation of host ubiquitin-like protein modification / host cell Golgi apparatus / methyltransferase cap1 activity / cysteine-type deubiquitinase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / ubiquitinyl hydrolase 1 / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; システインプロテアーゼ / lyase activity / single-stranded RNA binding / viral protein processing / host cell perinuclear region of cytoplasm / host cell endoplasmic reticulum membrane / RNA helicase / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / symbiont-mediated suppression of host gene expression / copper ion binding / viral translational frameshifting / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / DNA-templated transcription / lipid binding / host cell nucleus / SARS-CoV-2 activates/modulates innate and adaptive immune responses / ATP hydrolysis activity / proteolysis / RNA binding / zinc ion binding / ATP binding 類似検索 - 分子機能 | ||||||
| 生物種 | ![]() | ||||||
| 手法 | 電子顕微鏡法 / サブトモグラム平均法 / クライオ電子顕微鏡法 / 解像度: 4.9 Å | ||||||
データ登録者 | Huang, Y.X. / Zhong, L.J. / Zhang, W.X. / Ni, T. | ||||||
| 資金援助 | 香港, 1件
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引用 | ジャーナル: Nature / 年: 2024タイトル: Molecular architecture of coronavirus double-membrane vesicle pore complex. 著者: Yixin Huang / Tongyun Wang / Lijie Zhong / Wenxin Zhang / Yu Zhang / Xiulian Yu / Shuofeng Yuan / Tao Ni / ![]() 要旨: Coronaviruses remodel the intracellular host membranes during replication, forming double-membrane vesicles (DMVs) to accommodate viral RNA synthesis and modifications. SARS-CoV-2 non-structural ...Coronaviruses remodel the intracellular host membranes during replication, forming double-membrane vesicles (DMVs) to accommodate viral RNA synthesis and modifications. SARS-CoV-2 non-structural protein 3 (nsp3) and nsp4 are the minimal viral components required to induce DMV formation and to form a double-membrane-spanning pore, essential for the transport of newly synthesized viral RNAs. The mechanism of DMV pore complex formation remains unknown. Here we describe the molecular architecture of the SARS-CoV-2 nsp3-nsp4 pore complex, as resolved by cryogenic electron tomography and subtomogram averaging in isolated DMVs. The structures uncover an unexpected stoichiometry and topology of the nsp3-nsp4 pore complex comprising 12 copies each of nsp3 and nsp4, organized in 4 concentric stacking hexamer rings, mimicking a miniature nuclear pore complex. The transmembrane domains are interdigitated to create a high local curvature at the double-membrane junction, coupling double-membrane reorganization with pore formation. The ectodomains form extensive contacts in a pseudo-12-fold symmetry, belting the pore complex from the intermembrane space. A central positively charged ring of arginine residues coordinates the putative RNA translocation, essential for virus replication. Our work establishes a framework for understanding DMV pore formation and RNA translocation, providing a structural basis for the development of new antiviral strategies to combat coronavirus infection. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 8yax.cif.gz | 583.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8yax.ent.gz | 381.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8yax.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ya/8yax ftp://data.pdbj.org/pub/pdb/validation_reports/ya/8yax | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 39107MC ![]() 8yb5C ![]() 8yb7C M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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| 1 | x 6![]()
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要素
| #1: タンパク質 | 分子量: 217471.188 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: rep, 1a / 細胞株 (発現宿主): HEK 293F / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P0DTD1, ubiquitinyl hydrolase 1#2: タンパク質 | 分子量: 56229.582 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: rep, 1a / 細胞株 (発現宿主): HEK 293F / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P0DTD1Has protein modification | Y | |
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-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
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| EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: サブトモグラム平均法 |
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試料調製
| 構成要素 | 名称: SARS-CoV-2 nsp3-4 pore complex / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | ||||||||||||||||||||
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| 由来(天然) | 生物種: ![]() | ||||||||||||||||||||
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: HEK 293F | ||||||||||||||||||||
| 緩衝液 | pH: 8 / 詳細: 150mM NaCl, 10mM Tris-HCl, 1mM EDTA | ||||||||||||||||||||
| 緩衝液成分 |
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| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||
| 試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: EMS Lacey Carbon | ||||||||||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 277.15 K |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: TFS KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 81000 X / 最大 デフォーカス(公称値): 6000 nm / 最小 デフォーカス(公称値): 1000 nm / アライメント法: COMA FREE |
| 試料ホルダ | 凍結剤: NITROGEN |
| 撮影 | 電子線照射量: 3 e/Å2 / Avg electron dose per subtomogram: 105 e/Å2 フィルム・検出器のモデル: TFS FALCON 4i (4k x 4k) 詳細: The tilt-series were acquired using Thermofisher Krios equipped with a Falcon 4i camera and Selectris energy filter. A dose-symmetric scheme (group of 2) was used, with a tilt range of -51 ...詳細: The tilt-series were acquired using Thermofisher Krios equipped with a Falcon 4i camera and Selectris energy filter. A dose-symmetric scheme (group of 2) was used, with a tilt range of -51 degree to 51 degree (or -60 to 60) at 3 degree increments and an exposure dose of 3 e/A2 per image. The total dose was 105 or 123 e/A2. |
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解析
| EMソフトウェア |
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| 画像処理 | 詳細: Falcon 4i Selectris X energy filter | ||||||||||||||||||||||||||||||||||||||||||||||||
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C6 (6回回転対称) | ||||||||||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 4.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 30607 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||
| EM volume selection | Num. of tomograms: 4746 / Num. of volumes extracted: 598699 / Reference model: EMD-11514 | ||||||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL | ||||||||||||||||||||||||||||||||||||||||||||||||
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| 精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||||||||||||||
| 原子変位パラメータ | Biso mean: 381.37 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||
| 拘束条件 |
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ムービー
コントローラー
万見について






香港, 1件
引用







PDBj










Homo sapiens (ヒト)
FIELD EMISSION GUN

