+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8fxb | ||||||
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タイトル | SARS-CoV-2 XBB.1 spike RBD bound to the human ACE2 ectodomain and the S309 neutralizing antibody Fab fragment | ||||||
要素 |
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キーワード | VIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / COVID-19 / XBB.1 / Spike glycoprotein / Neutralizing antibodies / Structural Genomics / Seattle Structural Genomics Center for Infectious Disease / SSGCID / Inhibitor / ACE2 / VIRAL PROTEIN-IMMUNE SYSTEM complex | ||||||
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 | Homo sapiens (ヒト) Severe acute respiratory syndrome coronavirus (SARS コロナウイルス) | ||||||
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: 3.1 Å | ||||||
データ登録者 | Park, Y.J. / Seattle Structural Genomics Center for Infectious Disease (SSGCID) / Veesler, D. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Nature / 年: 2023 タイトル: Neutralization, effector function and immune imprinting of Omicron variants. 著者: Amin Addetia / Luca Piccoli / James Brett Case / Young-Jun Park / Martina Beltramello / Barbara Guarino / Ha Dang / Guilherme Dias de Melo / Dora Pinto / Kaitlin Sprouse / Suzanne M Scheaffer ...著者: Amin Addetia / Luca Piccoli / James Brett Case / Young-Jun Park / Martina Beltramello / Barbara Guarino / Ha Dang / Guilherme Dias de Melo / Dora Pinto / Kaitlin Sprouse / Suzanne M Scheaffer / Jessica Bassi / Chiara Silacci-Fregni / Francesco Muoio / Marco Dini / Lucia Vincenzetti / Rima Acosta / Daisy Johnson / Sambhavi Subramanian / Christian Saliba / Martina Giurdanella / Gloria Lombardo / Giada Leoni / Katja Culap / Carley McAlister / Anushka Rajesh / Exequiel Dellota / Jiayi Zhou / Nisar Farhat / Dana Bohan / Julia Noack / Alex Chen / Florian A Lempp / Joel Quispe / Lauriane Kergoat / Florence Larrous / Elisabetta Cameroni / Bradley Whitener / Olivier Giannini / Pietro Cippà / Alessandro Ceschi / Paolo Ferrari / Alessandra Franzetti-Pellanda / Maira Biggiogero / Christian Garzoni / Stephanie Zappi / Luca Bernasconi / Min Jeong Kim / Laura E Rosen / Gretja Schnell / Nadine Czudnochowski / Fabio Benigni / Nicholas Franko / Jennifer K Logue / Courtney Yoshiyama / Cameron Stewart / Helen Chu / Hervé Bourhy / Michael A Schmid / Lisa A Purcell / Gyorgy Snell / Antonio Lanzavecchia / Michael S Diamond / Davide Corti / David Veesler / 要旨: Currently circulating SARS-CoV-2 variants have acquired convergent mutations at hot spots in the receptor-binding domain (RBD) of the spike protein. The effects of these mutations on viral infection ...Currently circulating SARS-CoV-2 variants have acquired convergent mutations at hot spots in the receptor-binding domain (RBD) of the spike protein. The effects of these mutations on viral infection and transmission and the efficacy of vaccines and therapies remains poorly understood. Here we demonstrate that recently emerged BQ.1.1 and XBB.1.5 variants bind host ACE2 with high affinity and promote membrane fusion more efficiently than earlier Omicron variants. Structures of the BQ.1.1, XBB.1 and BN.1 RBDs bound to the fragment antigen-binding region of the S309 antibody (the parent antibody for sotrovimab) and human ACE2 explain the preservation of antibody binding through conformational selection, altered ACE2 recognition and immune evasion. We show that sotrovimab binds avidly to all Omicron variants, promotes Fc-dependent effector functions and protects mice challenged with BQ.1.1 and hamsters challenged with XBB.1.5. Vaccine-elicited human plasma antibodies cross-react with and trigger effector functions against current Omicron variants, despite a reduced neutralizing activity, suggesting a mechanism of protection against disease, exemplified by S309. Cross-reactive RBD-directed human memory B cells remained dominant even after two exposures to Omicron spikes, underscoring the role of persistent immune imprinting. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8fxb.cif.gz | 218 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8fxb.ent.gz | 162.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8fxb.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 | 8fxb_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8fxb_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 8fxb_validation.xml.gz | 36.6 KB | 表示 | |
CIF形式データ | 8fxb_validation.cif.gz | 53.8 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/fx/8fxb ftp://data.pdbj.org/pub/pdb/validation_reports/fx/8fxb | HTTPS FTP |
-関連構造データ
関連構造データ | 29530MC 8fxcC 8s9gC 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 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-タンパク質 , 2種, 2分子 AE
#3: タンパク質 | 分子量: 74492.406 Da / 分子数: 1 / Fragment: ectodomain / 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 |
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#4: タンパク質 | 分子量: 28159.863 Da / 分子数: 1 / Fragment: Receptor binding domain / 由来タイプ: 組換発現 由来: (組換発現) Severe acute respiratory syndrome coronavirus (SARS コロナウイルス) 遺伝子: S, 2 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P0DTC2 |
-抗体 , 2種, 2分子 LH
#1: 抗体 | 分子量: 23204.697 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: Homo sapiens (ヒト) |
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#2: 抗体 | 分子量: 50163.277 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: Homo sapiens (ヒト) |
-糖 , 2種, 6分子
#5: 多糖 | alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose |
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#6: 糖 | ChemComp-NAG / |
-詳細
研究の焦点であるリガンドがあるか | N |
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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 | 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): 2500 nm / 最小 デフォーカス(公称値): 500 nm |
撮影 | 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||
3次元再構成 | 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 281957 / 対称性のタイプ: POINT |