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基本情報
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タイトル | Cryo-EM structure of enterovirus A71 mature virion in complex with Fab CT11F9 | |||||||||
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![]() | VIRUS / ENTEROVIRUS A71 | |||||||||
機能・相同性 | ![]() symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / nucleoside-triphosphate phosphatase ...symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / nucleoside-triphosphate phosphatase / channel activity / monoatomic ion transmembrane transport / clathrin-dependent endocytosis of virus by host cell / DNA replication / RNA helicase activity / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / DNA-templated transcription / virion attachment to host cell / host cell nucleus / structural molecule activity / ATP hydrolysis activity / proteolysis / RNA binding / zinc ion binding / ATP binding / membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() ![]() ![]() ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.04 Å | |||||||||
![]() | Jiang Y / Zhu R / Zheng Q / Li S / Xia N | |||||||||
資金援助 | 1件
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![]() | ![]() タイトル: Development of In Vitro Potency Methods to Replace In Vivo Tests for Enterovirus 71 Inactivated Vaccine (Human Diploid Cell-Based/Vero Cell-Based). 著者: Xuanxuan Zhang / Li Yi / Dan Yu / Jun Li / Xintian Li / Xing Wu / Fan Gao / Qian He / Wenhui Wang / Kaiwen Wang / Zejun Wang / Zhengling Liu / Yadong Li / Yong Zhao / Huiyi Li / Xiao Ma / ...著者: Xuanxuan Zhang / Li Yi / Dan Yu / Jun Li / Xintian Li / Xing Wu / Fan Gao / Qian He / Wenhui Wang / Kaiwen Wang / Zejun Wang / Zhengling Liu / Yadong Li / Yong Zhao / Huiyi Li / Xiao Ma / Qingbing Zheng / Longfa Xu / Tong Cheng / Rui Zhu / Jing Guo / Jing Li / Qunying Mao / Zhenglun Liang / ![]() 要旨: BACKGROUND: The three commercial Enterovirus 71 (EV71) inactivated vaccines which have effectively controlled the EV71 pandemic currently rely on inherent variable in vivo potency methods for batch ...BACKGROUND: The three commercial Enterovirus 71 (EV71) inactivated vaccines which have effectively controlled the EV71 pandemic currently rely on inherent variable in vivo potency methods for batch release. To align with 3R (Replacement, Reduction, Refinement) principles and enhance quality control, this study referred to WHO guidelines and the European Pharmacopoeia to develop in vitro relative potency (IVRP) methods. 手法: Working standards tracing to phase 3 clinical vaccines were established. Manufacture-specific IVRP methods were developed and validated per ICH Q14/Q2(R2), utilizing conformational epitope- ...手法: Working standards tracing to phase 3 clinical vaccines were established. Manufacture-specific IVRP methods were developed and validated per ICH Q14/Q2(R2), utilizing conformational epitope-targeting neutralizing monoclonal antibodies (MAbs). One of the MAbs (CT11F9) recognition sites was clarified with Cryo-EM. Subsequently, the performance of IVRP was assessed using varied concentrations and heat-treated vaccines. The correlation between IVRP and in vivo methods was analyzed, followed by setting IVRP specifications. RESULTS: The manufacturer-specific working standard exhibited ED50 values comparable to those of related phase 3 clinical vaccines. All IVRP methods achieved a relative bias/precision/total error ≤ ...RESULTS: The manufacturer-specific working standard exhibited ED50 values comparable to those of related phase 3 clinical vaccines. All IVRP methods achieved a relative bias/precision/total error ≤ 15%. The IVRP methods correlated with in vivo methods ( < 0.05, r > 0.9) can discriminate EV71 antigen concentrations ( < 0.01, r > 0.99) and indicate the stability of the vaccines. Cryo-EM was adopted to identify the epitopes recognized by CT11F9, revealing that this neutralizing antibody recognizes a conformational epitope spanning VP1-3 of the same protomer. Using 31-47 batches of commercial vaccines, IVRP specifications were proposed as 0.56-1.35, 0.58-1.40, and 0.54-1.50. CONCLUSIONS: Based on conformational epitope-targeting neutralizing MAbs, manufacturer-specific IVRP methods, which were sensitive to process variations and correlated with in vivo results, have been ...CONCLUSIONS: Based on conformational epitope-targeting neutralizing MAbs, manufacturer-specific IVRP methods, which were sensitive to process variations and correlated with in vivo results, have been established. IVRP methods provide a reliable, animal-free alternative for EV71 vaccine batch release. | |||||||||
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構造の表示
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ダウンロードとリンク
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マップデータ | ![]() | 683.9 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 23 KB 23 KB | 表示 表示 | ![]() |
画像 | ![]() | 74.5 KB | ||
Filedesc metadata | ![]() | 6.9 KB | ||
その他 | ![]() ![]() | 676.6 MB 676.6 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 19.5 KB | 表示 | |
CIF形式データ | ![]() | 23.5 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 | ![]() 9m7vMC M: このマップから作成された原子モデル 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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: #1
ファイル | emd_63694_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #2
ファイル | emd_63694_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
+全体 : Enterovirus A71 mature virion in complex with Fab CT11F9
+超分子 #1: Enterovirus A71 mature virion in complex with Fab CT11F9
+超分子 #2: Enterovirus A71 mature virion
+超分子 #3: Fab CT11F9
+分子 #1: The light chain of Fab CT11F9
+分子 #2: The heavy chain of Fab CT11F9
+分子 #3: Capsid protein VP1
+分子 #4: Capsid protein VP2
+分子 #5: Capsid protein VP3
+分子 #6: Capsid protein VP4
+分子 #7: SPHINGOSINE
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.4 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TECNAI F30 |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 40.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 4.0 µm / 最小 デフォーカス(公称値): 0.3 µm |
実験機器 | ![]() モデル: Tecnai F30 / 画像提供: FEI Company |