+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7a97 | |||||||||
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タイトル | SARS-CoV-2 Spike Glycoprotein with 2 ACE2 Bound | |||||||||
要素 |
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キーワード | VIRAL PROTEIN / SARS-CoV-2 / Spike / Virus Glycoprotein / Coronavirus / ACE2 | |||||||||
機能・相同性 | 機能・相同性情報 positive regulation of amino acid transport / angiotensin-converting enzyme 2 / positive regulation of L-proline import across plasma membrane / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; 金属プロテアーゼ / angiotensin-mediated drinking behavior / regulation of systemic arterial blood pressure by renin-angiotensin / tryptophan transport / positive regulation of gap junction assembly / regulation of cardiac conduction / regulation of vasoconstriction ...positive regulation of amino acid transport / angiotensin-converting enzyme 2 / positive regulation of L-proline import across plasma membrane / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; 金属プロテアーゼ / angiotensin-mediated drinking behavior / regulation of systemic arterial blood pressure by renin-angiotensin / tryptophan transport / positive regulation of gap junction assembly / regulation of cardiac conduction / regulation of vasoconstriction / peptidyl-dipeptidase activity / maternal process involved in female pregnancy / angiotensin maturation / Metabolism of Angiotensinogen to Angiotensins / negative regulation of signaling receptor activity / carboxypeptidase activity / Attachment and Entry / positive regulation of cardiac muscle contraction / viral life cycle / regulation of cytokine production / blood vessel diameter maintenance / negative regulation of smooth muscle cell proliferation / brush border membrane / regulation of transmembrane transporter activity / cilium / negative regulation of ERK1 and ERK2 cascade / metallopeptidase activity / positive regulation of reactive oxygen species metabolic process / endocytic vesicle membrane / virus receptor activity / regulation of cell population proliferation / regulation of inflammatory response / endopeptidase activity / Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Potential therapeutics for SARS / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / membrane fusion / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / symbiont entry into host cell / membrane raft / apical plasma membrane / endoplasmic reticulum lumen / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / cell surface / extracellular space / extracellular exosome / zinc ion binding / extracellular region / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | Severe acute respiratory syndrome coronavirus 2 (ウイルス) Homo sapiens (ヒト) | |||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.4 Å | |||||||||
データ登録者 | Benton, D.J. / Wrobel, A.G. / Rosenthal, P.B. / Gamblin, S.J. | |||||||||
資金援助 | 英国, 2件
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引用 | ジャーナル: Nature / 年: 2020 タイトル: Receptor binding and priming of the spike protein of SARS-CoV-2 for membrane fusion. 著者: Donald J Benton / Antoni G Wrobel / Pengqi Xu / Chloë Roustan / Stephen R Martin / Peter B Rosenthal / John J Skehel / Steven J Gamblin / 要旨: Infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is initiated by virus binding to the ACE2 cell-surface receptors, followed by fusion of the virus and cell membranes to ...Infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is initiated by virus binding to the ACE2 cell-surface receptors, followed by fusion of the virus and cell membranes to release the virus genome into the cell. Both receptor binding and membrane fusion activities are mediated by the virus spike glycoprotein. As with other class-I membrane-fusion proteins, the spike protein is post-translationally cleaved, in this case by furin, into the S1 and S2 components that remain associated after cleavage. Fusion activation after receptor binding is proposed to involve the exposure of a second proteolytic site (S2'), cleavage of which is required for the release of the fusion peptide. Here we analyse the binding of ACE2 to the furin-cleaved form of the SARS-CoV-2 spike protein using cryo-electron microscopy. We classify ten different molecular species, including the unbound, closed spike trimer, the fully open ACE2-bound trimer and dissociated monomeric S1 bound to ACE2. The ten structures describe ACE2-binding events that destabilize the spike trimer, progressively opening up, and out, the individual S1 components. The opening process reduces S1 contacts and unshields the trimeric S2 core, priming the protein for fusion activation and dissociation of ACE2-bound S1 monomers. The structures also reveal refolding of an S1 subdomain after ACE2 binding that disrupts interactions with S2, which involves Asp614 and leads to the destabilization of the structure of S2 proximal to the secondary (S2') cleavage site. | |||||||||
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 | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7a97.cif.gz | 780.8 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7a97.ent.gz | 628.5 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7a97.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
文書・要旨 | 7a97_validation.pdf.gz | 1.4 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7a97_full_validation.pdf.gz | 1.4 MB | 表示 | |
XML形式データ | 7a97_validation.xml.gz | 122.8 KB | 表示 | |
CIF形式データ | 7a97_validation.cif.gz | 187.2 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/a9/7a97 ftp://data.pdbj.org/pub/pdb/validation_reports/a9/7a97 | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 142410.078 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) Severe acute respiratory syndrome coronavirus 2 (ウイルス) 遺伝子: S, 2 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P0DTC2 #2: タンパク質 | 分子量: 75337.422 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ACE2, UNQ868/PRO1885 / 発現宿主: Homo sapiens (ヒト) 参照: UniProt: Q9BYF1, angiotensin-converting enzyme 2, 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; 金属プロテアーゼ Has 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: 単粒子再構成法 |
-試料調製
構成要素 |
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分子量 | 実験値: NO | ||||||||||||||||||||||||
由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 8 | ||||||||||||||||||||||||
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: ETHANE |
-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: FEI TITAN 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 / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 1500 nm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 8 sec. / 電子線照射量: 54.4 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 QUANTUM (4k x 4k) |
電子光学装置 | エネルギーフィルター名称: GIF Quantum LS / エネルギーフィルタースリット幅: 20 eV |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||
3次元再構成 | 解像度: 4.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 40000 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
原子モデル構築 | プロトコル: OTHER / 空間: REAL |