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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: 9js4 | |||||||||||||||||||||||||||
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タイトル | Cryo-EM structure of neutralizing antibody 8G3 in complex with BA.1 RBD | |||||||||||||||||||||||||||
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![]() | VIRAL PROTEIN / SARS-CoV-2 / neutralizing antibody / RBD | |||||||||||||||||||||||||||
機能・相同性 | ![]() Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell ...Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / membrane fusion / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / receptor ligand activity / endocytosis involved in viral entry into host cell / 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 / 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: 3.8 Å | |||||||||||||||||||||||||||
![]() | Li, J. / Li, H. | |||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Rapid restoration of potent neutralization activity against the latest Omicron variant JN.1 via AI rational design and antibody engineering. 著者: Yunji Liao / Hang Ma / Zhenyu Wang / Shusheng Wang / Yang He / Yunsong Chang / Huifang Zong / Haoneng Tang / Lei Wang / Yong Ke / Huiyu Cai / Ping Li / Jian Tang / Hua Chen / Aleksandra ...著者: Yunji Liao / Hang Ma / Zhenyu Wang / Shusheng Wang / Yang He / Yunsong Chang / Huifang Zong / Haoneng Tang / Lei Wang / Yong Ke / Huiyu Cai / Ping Li / Jian Tang / Hua Chen / Aleksandra Drelich / Bi-Hung Peng / Jason Hsu / Vivian Tat / Chien-Te K Tseng / Jingjing Song / Yunsheng Yuan / Mingyuan Wu / Junjun Liu / Yali Yue / Xiaoju Zhang / Ziqi Wang / Li Yang / Jing Li / Xiaodan Ni / Hongshi Li / Yuning Xiang / Yanlin Bian / Baohong Zhang / Haiyang Yin / Dimiter S Dimitrov / John Gilly / Lei Han / Hua Jiang / Yueqing Xie / Jianwei Zhu / ![]() ![]() ![]() 要旨: The rapid evolution of the viral genome has led to the continual generation of new variants of SARS-CoV-2. Developing antibody drugs with broad-spectrum and high efficiency is a long-term task. It is ...The rapid evolution of the viral genome has led to the continual generation of new variants of SARS-CoV-2. Developing antibody drugs with broad-spectrum and high efficiency is a long-term task. It is promising but challenging to develop therapeutic neutralizing antibodies (nAbs) through in vitro evolution based on antigen-antibody binding interactions. From an early B cell antibody repertoire, we isolated antibody 8G3 that retains its nonregressive neutralizing activity against Omicron BA.1 and various other strains in vitro. 8G3 protected ACE2 transgenic mice from BA.1 and WA1/2020 virus infection without adverse clinical manifestations and completely cleared viral load in the lungs. Similar to most IGHV3-53 antibodies, the binding sites of 8G3 and ACE2 largely overlap, enabling competition with ACE2 for binding to RBD. By comprehensively considering the binding free energy changes of the antigen-antibody complexes, the biological environment of their interactions, and the evolutionary direction of the antibodies, we were able to select 50 mutants. Among them, 11 were validated by experiments showing better neutralizing activities. Further, a combination of four mutations were identified in 8G3 that increased its neutralization potency against JN.1, the latest Omicron mutant, by approximately 1,500-fold, and one of the mutations led to an improvement in activity against multiple variants to a certain extent. Together, we established a procedure of rapid selection of neutralizing antibodies with potent SARS-CoV-2 neutralization activity. Our results provide a reference for engineering neutralizing antibodies against future SARS-CoV-2 variants and even other pandemic viruses. | |||||||||||||||||||||||||||
履歴 |
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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 | ![]() | 115.7 KB | 表示 | ![]() |
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PDB形式 | ![]() | 70 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 380.7 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 382.7 KB | 表示 | |
XML形式データ | ![]() | 9.2 KB | 表示 | |
CIF形式データ | ![]() | 13.6 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 61766MC 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 ![]() |
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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: 抗体 | 分子量: 23723.164 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
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#2: 抗体 | 分子量: 23338.207 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
#3: タンパク質 | 分子量: 137337.391 Da / 分子数: 1 / Fragment: RBD domain / 由来タイプ: 組換発現 由来: (組換発現) ![]() 株: BA.1, Omicron / 遺伝子: S, 2 発現宿主: ![]() ![]() 参照: UniProt: P0DTC2 |
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 | 名称: Cryo-EM structure of neutralizing antibody 8G3 in complex with BA.1 RBD タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 5.5 |
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: TFS 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): 2000 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k 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: 118107 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 43.78 Å2 | ||||||||||||||||||||||||
拘束条件 |
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