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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: 8wlz | ||||||
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タイトル | Cryo-EM structure of the WIV1 S-hACE2 complex | ||||||
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![]() | VIRAL PROTEIN/HYDROLASE / spike / VIRAL PROTEIN-HYDROLASE complex | ||||||
機能・相同性 | ![]() 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 / positive regulation of gap junction assembly / tryptophan transport / regulation of cardiac conduction / maternal process involved in female pregnancy ...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 / positive regulation of gap junction assembly / tryptophan transport / regulation of cardiac conduction / maternal process involved in female pregnancy / peptidyl-dipeptidase activity / regulation of vasoconstriction / transporter activator activity / Metabolism of Angiotensinogen to Angiotensins / carboxypeptidase activity / angiotensin maturation / Attachment and Entry / receptor-mediated endocytosis of virus by host cell / metallocarboxypeptidase activity / viral life cycle / positive regulation of cardiac muscle contraction / regulation of cytokine production / blood vessel diameter maintenance / negative regulation of smooth muscle cell proliferation / brush border membrane / negative regulation of ERK1 and ERK2 cascade / endocytic vesicle membrane / positive regulation of reactive oxygen species metabolic process / metallopeptidase activity / regulation of cell population proliferation / virus receptor activity / regulation of inflammatory response / endopeptidase activity / viral translation / Potential therapeutics for SARS / Induction of Cell-Cell Fusion / entry receptor-mediated virion attachment to host cell / membrane fusion / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell / cilium / apical plasma membrane / membrane raft / endocytosis involved in viral entry into host cell / endoplasmic reticulum lumen / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont entry into host cell / host cell plasma membrane / virion membrane / cell surface / negative regulation of transcription by RNA polymerase II / extracellular space / extracellular exosome / extracellular region / zinc ion binding / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() ![]() | ||||||
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: 4.45 Å | ||||||
![]() | Wang, X. / Qiao, S. | ||||||
資金援助 | 1件
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![]() | ![]() タイトル: Structural determinants of spike infectivity in bat SARS-like coronaviruses RsSHC014 and WIV1. 著者: Shuyuan Qiao / Xinquan Wang / ![]() 要旨: The recurrent spillovers of coronaviruses (CoVs) have posed severe threats to public health and the global economy. Bat severe acute respiratory syndrome (SARS)-like CoVs RsSHC014 and WIV1, currently ...The recurrent spillovers of coronaviruses (CoVs) have posed severe threats to public health and the global economy. Bat severe acute respiratory syndrome (SARS)-like CoVs RsSHC014 and WIV1, currently circulating in bat populations, are poised for human emergence. The trimeric spike (S) glycoprotein, responsible for receptor recognition and membrane fusion, plays a critical role in cross-species transmission and infection. Here, we determined the cryo-electron microscopy (EM) structures of the RsSHC014 S protein in the closed state at 2.9 Å, the WIV1 S protein in the closed state at 2.8 Å, and the intermediate state at 4.0 Å. In the intermediate state, one receptor-binding domain (RBD) is in the "down" position, while the other two RBDs exhibit poor density. We also resolved the complex structure of the WIV1 S protein bound to human ACE2 (hACE2) at 4.5 Å, which provides structural basis for the future emergence of WIV1 in humans. Through biochemical experiments, we found that despite strong binding affinities between the RBDs and both human and civet ACE2, the pseudoviruses of RsSHC014, but not WIV1, failed to infect 293T cells overexpressing either human or civet ACE2. Mutagenesis analysis revealed that the Y623H substitution, located in the SD2 region, significantly improved the cell entry efficiency of RsSHC014 pseudoviruses, which is likely accomplished by promoting the open conformation of spike glycoproteins. Our findings emphasize the necessity of both efficient RBD lifting and tight RBD-hACE2 binding for viral infection and underscore the significance of the 623 site of the spike glycoprotein for the infectivity of bat SARS-like CoVs. IMPORTANCE: The bat SARS-like CoVs RsSHC014 and WIV1 can use hACE2 for cell entry without further adaptation, indicating their potential risk of emergence in human populations. The S glycoprotein, ...IMPORTANCE: The bat SARS-like CoVs RsSHC014 and WIV1 can use hACE2 for cell entry without further adaptation, indicating their potential risk of emergence in human populations. The S glycoprotein, responsible for receptor recognition and membrane fusion, plays a crucial role in cross-species transmission and infection. In this study, we determined the cryo-EM structures of the S glycoproteins of RsSHC014 and WIV1. Detailed comparisons revealed dynamic structural variations within spike proteins. We also elucidated the complex structure of WIV1 S-hACE2, providing structural evidence for the potential emergence of WIV1 in humans. Although RsSHC014 and WIV1 had similar hACE2-binding affinities, they exhibited distinct pseudovirus cell entry behavior. Through mutagenesis and cryo-EM analysis, we revealed that besides the structural variations, the 623 site in the SD2 region is another important structural determinant of spike infectivity. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 789 KB | 表示 | ![]() |
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PDB形式 | ![]() | 649.5 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
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-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.4 MB | 表示 | |
XML形式データ | ![]() | 101.8 KB | 表示 | |
CIF形式データ | ![]() | 151.6 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 140747.688 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: S, wac, EcT6_00157 / 発現宿主: ![]() #2: タンパク質 | 分子量: 69982.562 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #3: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #4: 多糖 | #5: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | N | 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 |
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試料調製
構成要素 | 名称: WIV1 S-hACE2 complex / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT | ||||||||||||
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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) | 生物種: ![]() | ||||||||||||
緩衝液 | pH: 7.2 | ||||||||||||
試料 | 濃度: 0.3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||
急速凍結 | 凍結剤: ETHANE |
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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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 1500 nm |
撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
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3次元再構成 | 解像度: 4.45 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 31293 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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