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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: 8g76 | |||||||||
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| タイトル | SARS-CoV-2 spike/Nb5 complex | |||||||||
要素 |
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キーワード | VIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / VIRAL PROTEIN-IMMUNE SYSTEM complex / Nanobody | |||||||||
| 機能・相同性 | 機能・相同性情報symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular region / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / positive regulation of viral entry into host cell ...symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular region / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / positive regulation of viral entry into host cell / membrane fusion / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / Attachment and Entry / entry receptor-mediated virion attachment to host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / endocytosis involved in viral entry into host cell / receptor ligand activity / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont entry into host cell / virion attachment to host cell / host cell plasma membrane / SARS-CoV-2 activates/modulates innate and adaptive immune responses / virion membrane / membrane / identical protein binding / 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: 3.8 Å | |||||||||
データ登録者 | Ye, G. / Bu, F. / Liu, B. / Li, F. | |||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: PLoS Pathog / 年: 2024タイトル: Dual-role epitope on SARS-CoV-2 spike enhances and neutralizes viral entry across different variants. 著者: Gang Ye / Fan Bu / Ruangang Pan / Alise Mendoza / Divyasha Saxena / Jian Zheng / Stanley Perlman / Bin Liu / Fang Li / ![]() 要旨: Grasping the roles of epitopes in viral glycoproteins is essential for unraveling the structure and function of these proteins. Up to now, all identified epitopes have been found to either ...Grasping the roles of epitopes in viral glycoproteins is essential for unraveling the structure and function of these proteins. Up to now, all identified epitopes have been found to either neutralize, have no effect on, or enhance viral entry into cells. Here, we used nanobodies (single-domain antibodies) as probes to investigate a unique epitope on the SARS-CoV-2 spike protein, located outside the protein's receptor-binding domain. Nanobody binding to this epitope enhances the cell entry of prototypic SARS-CoV-2, while neutralizing the cell entry of SARS-CoV-2 Omicron variant. Moreover, nanobody binding to this epitope promotes both receptor binding activity and post-attachment activity of prototypic spike, explaining the enhanced viral entry. The opposite occurs with Omicron spike, explaining the neutralized viral entry. This study reveals a unique epitope that can both enhance and neutralize viral entry across distinct viral variants, suggesting that epitopes may vary their roles depending on the viral context. Consequently, antibody therapies should be assessed across different viral variants to confirm their efficacy and safety. | |||||||||
| 履歴 |
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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 | 8g76.cif.gz | 649.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8g76.ent.gz | 524 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8g76.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/g7/8g76 ftp://data.pdbj.org/pub/pdb/validation_reports/g7/8g76 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 29798MC ![]() 8g77C ![]() 8ug9C 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 |
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要素
| #1: タンパク質 | 分子量: 136832.469 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: S, 2 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P0DTC2#2: 抗体 | 分子量: 15174.728 Da / 分子数: 3 / 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: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | Y | 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: SARS-CoV-2 spike/Nb5 complex / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: MULTIPLE SOURCES |
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| 分子量 | 値: 0.425 MDa / 実験値: YES |
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) |
| 緩衝液 | pH: 7.5 |
| 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 |
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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: 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): 2400 nm / 最小 デフォーカス(公称値): 800 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: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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| 3次元再構成 | 解像度: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 31809 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
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コントローラー
万見について







米国, 2件
引用















PDBj






Homo sapiens (ヒト)


FIELD EMISSION GUN