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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: 9kwy | |||||||||||||||||||||
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| タイトル | Cryo-EM structure of SARS-CoV-2 RBD in complex with ACE2 and mAb 1C4 | |||||||||||||||||||||
要素 |
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キーワード | VIRAL PROTEIN/HYDROLASE / SARS-CoV-2 / Neutralizing antibody / Cryo-EM / VIRAL PROTEIN-HYDROLASE complex | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報ceramide biosynthetic process / 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 / positive regulation of gap junction assembly / tryptophan transport / regulation of cardiac conduction / peptidyl-dipeptidase activity / transporter activator activity ...ceramide biosynthetic process / 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 / positive regulation of gap junction assembly / tryptophan transport / regulation of cardiac conduction / peptidyl-dipeptidase activity / transporter activator activity / angiotensin maturation / metallocarboxypeptidase activity / positive regulation of cardiac muscle contraction / brush border membrane / metallopeptidase activity / virus receptor activity / regulation of inflammatory response / symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / endopeptidase activity / 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 / cilium / 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 / cell surface / negative regulation of transcription by RNA polymerase II / : / membrane / metal ion binding / identical protein binding / plasma membrane / cytoplasm 類似検索 - 分子機能 | |||||||||||||||||||||
| 生物種 | 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: 2.82 Å | |||||||||||||||||||||
データ登録者 | Sun, H. / Jiang, Y. / Li, S. / Zheng, Q. | |||||||||||||||||||||
| 資金援助 | 1件
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引用 | ジャーナル: PLoS Pathog / 年: 2025タイトル: Engineering a multivalent antibody nanoparticle to overcome SARS-CoV-2 Omicron immune evasion. 著者: Hui Sun / Yanan Jiang / Miaolin Lan / Ming Zhou / Gangshun Yi / Juan Shen / Tingting Deng / Liqin Liu / Yang Huang / Yu Li / Jinfu Su / Yanling Lin / Zhenqin Chen / Lizhi Zhou / Tingting Li / ...著者: Hui Sun / Yanan Jiang / Miaolin Lan / Ming Zhou / Gangshun Yi / Juan Shen / Tingting Deng / Liqin Liu / Yang Huang / Yu Li / Jinfu Su / Yanling Lin / Zhenqin Chen / Lizhi Zhou / Tingting Li / Hai Yu / Tong Cheng / Yali Zhang / Lunzhi Yuan / Shaowei Li / Ying Gu / Peijun Zhang / Ningshao Xia / Qingbing Zheng / ![]() 要旨: The rapid evolution of SARS-CoV-2 and the subsequent emergence of Omicron subvariants pose significant challenges to the efficacy of existing vaccines and therapeutics, including those previously ...The rapid evolution of SARS-CoV-2 and the subsequent emergence of Omicron subvariants pose significant challenges to the efficacy of existing vaccines and therapeutics, including those previously reported most broad neutralizing antibodies (bnAbs). Here, we investigated the molecular basis of the altered neutralization profile of a bnAb, 1C4, against recent variants. 1C4 is effective against early variants from Alpha to Omicron BQ.1, but is circumvented by BQ.1.1, XBB and thereafter variants, primarily due to an additional R346T mutation that diminishes its binding affinity. Cryo-electron microscopy analysis revealed that despite the loss of neutralizing potency, 1C4 retained residual binding to the spike protein of immune-evasive variants such as XBB, which harbor altered receptor-binding domain (RBD). Furthermore, 1C4 exhibited a diminished capacity to inhibit ACE2 engagement with Omicron variants, amplifying the intricacies of viral immune evasion tactics. To address this, we employed the mi3-SpyCatcher-based nanoparticle to polymerize 1C4 (mi3-1C4), which reestablished the neutralization potency against recent variants by enhancing avidity via multivalent binding. Such multivalent binding can promote efficient spike aggregation as well as viral cross-linking, thereby providing enhanced protection against both the infection of Beta and XBB variants in a hamster model. Together, our findings delineate the molecular landscape of immune evasion by neutralizing antibodies and provide strategic insight for the adaptation of antibody engineering to keep pace with viral evolution. | |||||||||||||||||||||
| 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 | 9kwy.cif.gz | 183.8 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9kwy.ent.gz | 137.4 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9kwy.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/kw/9kwy ftp://data.pdbj.org/pub/pdb/validation_reports/kw/9kwy | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 62620MC ![]() 9kvjC ![]() 9kvkC ![]() 9kvqC ![]() 9kvtC ![]() 9w14C 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
-タンパク質 , 2種, 2分子 AG
| #1: タンパク質 | 分子量: 67344.008 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Sequence reference for Homo sapiens (9606) is not available in UniProt at the time of biocuration. Current sequence reference is from UniProt ID Q56H28. 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ACE2 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q56H28 |
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| #2: タンパク質 | 分子量: 21026.541 Da / 分子数: 1 / 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 |
-抗体 , 2種, 2分子 BC
| #3: 抗体 | 分子量: 11642.854 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
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| #4: 抗体 | 分子量: 13384.900 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() |
-糖 , 2種, 3分子 
| #5: 多糖 | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose |
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| #6: 糖 |
-詳細
| 研究の焦点であるリガンドがあるか | Y |
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| Has protein modification | Y |
-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 |
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| 由来(天然) |
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| 由来(組換発現) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||||||||||||
| 緩衝液 | pH: 7.4 | ||||||||||||||||||||||||||||||
| 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: 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 / 最大 デフォーカス(公称値): 1200 nm / 最小 デフォーカス(公称値): 600 nm |
| 撮影 | 電子線照射量: 48 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: 2.82 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 182640 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)


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FIELD EMISSION GUN