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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: 8zhq | |||||||||||||||||||||
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タイトル | SFTSV Gn in complex with JK-8/12 Fab | |||||||||||||||||||||
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![]() | VIRAL PROTEIN / Complex / Neutralizing antibody / SFTSV | |||||||||||||||||||||
機能・相同性 | ![]() host cell Golgi membrane / host cell endoplasmic reticulum membrane / fusion of virus membrane with host endosome membrane / symbiont entry into host cell / virion attachment to host cell / virion membrane / 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: 2.37 Å | |||||||||||||||||||||
![]() | Shang, H. / Guo, Y. / Zhang, N. / Liu, W. / Li, H. | |||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Discovery and characterization of potent broadly neutralizing antibodies from human survivors of severe fever with thrombocytopenia syndrome. 著者: Shuo Zhang / Hang Shang / Shuo Han / Jiachen Li / Xuefang Peng / Yongxiang Wu / Xin Yang / Yu Leng / Fengze Wang / Ning Cui / Lingjie Xu / Hongkai Zhang / Yu Guo / Xiaoyu Xu / Nan Zhang / Wei Liu / Hao Li / ![]() 要旨: BACKGROUND: Severe fever with thrombocytopenia syndrome virus (SFTSV) is an emerging tick-borne phlebovirus that causes viral hemorrhagic fever. Pandemic concerns have arisen due to the increased ...BACKGROUND: Severe fever with thrombocytopenia syndrome virus (SFTSV) is an emerging tick-borne phlebovirus that causes viral hemorrhagic fever. Pandemic concerns have arisen due to the increased human-to-human transmission and high mortality rate, highlighting the urgent need for specific therapeutics. 手法: Our observational study characterized the memory B cell response to natural SFTSV infection in four survivors. Monoclonal antibodies (mAbs) targeting the SFTSV glycoprotein N (Gn) were ...手法: Our observational study characterized the memory B cell response to natural SFTSV infection in four survivors. Monoclonal antibodies (mAbs) targeting the SFTSV glycoprotein N (Gn) were isolated and tested for in vitro neutralizing activities and effects on virus binding. Structural analysis was performed to identify neutralizing epitopes recognized by the mAbs. Prophylactical and therapeutical protections were evaluated using a lethal SFTSV infection model. FINDINGS: The selected mAbs exhibiting neutralizing activity primarily originate from the IGHV5-51 and IGHV3-30 germlines and target four distinct antigenic sites on SFTSV Gn. These elite mAbs ...FINDINGS: The selected mAbs exhibiting neutralizing activity primarily originate from the IGHV5-51 and IGHV3-30 germlines and target four distinct antigenic sites on SFTSV Gn. These elite mAbs effectively blocked the interaction between Gn and the cell receptor, preventing infections from five phylogenetically distinct SFTSV clades. Structural analysis revealed a novel neutralizing epitope located within SFTSV Gn domain I recognized by the elite mAbs. In mice of lethal infections with different SFTSV strains, administering a low dose of elite mAbs significantly improved survival rates in both prophylactic and therapeutic settings. INTERPRETATION: This study identifies potent broadly neutralizing antibodies that holds promise for use in humans against SFTSV infection and highlights inhibition of receptor binding as a crucial ...INTERPRETATION: This study identifies potent broadly neutralizing antibodies that holds promise for use in humans against SFTSV infection and highlights inhibition of receptor binding as a crucial mechanism for effective antibody-mediated neutralization against phleboviruses. FUNDING: The National Key Research and Development Plan of China (2018YFE0200401, 2022YFC2303300), National Natural Science Foundation of China (81825019), China Postdoctoral Science Foundation (2023M741824). | |||||||||||||||||||||
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 | ![]() | 236.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 184.2 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 | ![]() | 562.4 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 578.9 KB | 表示 | |
XML形式データ | ![]() | 25 KB | 表示 | |
CIF形式データ | ![]() | 38.7 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 | ![]() 60112MC 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
-タンパク質 , 1種, 1分子 E
#5: タンパク質 | 分子量: 38497.418 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: A0A2Z4HIM0 |
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-抗体 , 4種, 4分子 ABCD
#1: 抗体 | 分子量: 22470.803 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#2: 抗体 | 分子量: 23067.471 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#3: 抗体 | 分子量: 23031.750 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#4: 抗体 | 分子量: 22544.275 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
-糖 , 3種, 3分子 
#6: 多糖 | alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
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#7: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
#8: 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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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: Ternary complex of SFTSV Gn with neutralizing antibodies Fab JK-8 and JK-12 タイプ: COMPLEX / Entity ID: #1-#5 / 由来: RECOMBINANT |
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分子量 | 値: 0.15 MDa / 実験値: YES |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.2 |
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 / 湿度: 100 % / 凍結前の試料温度: 277.15 K |
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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: ![]() |
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): 1200 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 III (4k x 4k) |
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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: 2.37 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 400209 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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