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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: 7t3m | ||||||
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タイトル | SARS-CoV-2 S (Spike Glycoprotein) D614G with Three (3) RBDs Up, Bound to Antibody 2-7 scFv, composite map | ||||||
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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 / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / host cell endoplasmic reticulum-Golgi intermediate compartment membrane ...Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / entry receptor-mediated virion attachment to host cell / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / ![]() ![]() ![]() ![]() ![]() 類似検索 - 分子機能 | ||||||
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手法 | ![]() ![]() ![]() | ||||||
![]() | Byrne, P.O. / McLellan, J.S. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: IgG-like bispecific antibodies with potent and synergistic neutralization against circulating SARS-CoV-2 variants of concern. 著者: Matthew R Chang / Luke Tomasovic / Natalia A Kuzmina / Adam J Ronk / Patrick O Byrne / Rebecca Johnson / Nadia Storm / Eduardo Olmedillas / Yixuan J Hou / Alexandra Schäfer / Sarah R Leist / ...著者: Matthew R Chang / Luke Tomasovic / Natalia A Kuzmina / Adam J Ronk / Patrick O Byrne / Rebecca Johnson / Nadia Storm / Eduardo Olmedillas / Yixuan J Hou / Alexandra Schäfer / Sarah R Leist / Longping V Tse / Hanzhong Ke / Christian Coherd / Katrina Nguyen / Maliwan Kamkaew / Anna Honko / Quan Zhu / Galit Alter / Erica Ollmann Saphire / Jason S McLellan / Anthony Griffiths / Ralph S Baric / Alexander Bukreyev / Wayne A Marasco / ![]() 要旨: Monoclonal antibodies are a promising approach to treat COVID-19, however the emergence of SARS-CoV-2 variants has challenged the efficacy and future of these therapies. Antibody cocktails are being ...Monoclonal antibodies are a promising approach to treat COVID-19, however the emergence of SARS-CoV-2 variants has challenged the efficacy and future of these therapies. Antibody cocktails are being employed to mitigate these challenges, but neutralization escape remains a major challenge and alternative strategies are needed. Here we present two anti-SARS-CoV-2 spike binding antibodies, one Class 1 and one Class 4, selected from our non-immune human single-chain variable fragment (scFv) phage library, that are engineered into four, fully-human IgG-like bispecific antibodies (BsAb). Prophylaxis of hACE2 mice and post-infection treatment of golden hamsters demonstrates the efficacy of the monospecific antibodies against the original Wuhan strain, while promising in vitro results with the BsAbs demonstrate enhanced binding and distinct synergistic effects on neutralizing activity against circulating variants of concern. In particular, one BsAb engineered in a tandem scFv-Fc configuration shows synergistic neutralization activity against several variants of concern including B.1.617.2. This work provides evidence that synergistic neutralization can be achieved using a BsAb scaffold, and serves as a foundation for the future development of broadly reactive BsAbs against emerging variants of concern. | ||||||
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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 | ![]() | 659.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 547.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 25663MC ![]() 7t67C 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: タンパク質 | ![]() 分子量: 127002.930 Da / 分子数: 3 / 変異: D614G, R682G, R683S, R685S, K986P, V986P / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() ![]() 遺伝子: S, 2 / Variant: D614G 発現宿主: ![]() ![]() ![]() 参照: UniProt: P0DTC2 #2: 抗体 | 分子量: 13511.288 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() ![]() #3: 抗体 | 分子量: 11852.843 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() ![]() #4: 多糖 | ![]() #5: 糖 | ChemComp-NAG / ![]() 研究の焦点であるリガンドがあるか | N | |
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-実験情報
-実験
実験 | 手法: ![]() |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: ![]() |
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試料調製
構成要素 | 名称: Complex of SARS CoV-2 S, Spike Glycoprotein, variant D614G with Antibody 2-7 scFv タイプ: COMPLEX / Entity ID: #1-#3 / 由来: MULTIPLE SOURCES | |||||||||||||||
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分子量 | 実験値: NO | |||||||||||||||
緩衝液 | pH: 8 | |||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色![]() ![]() | |||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 | |||||||||||||||
急速凍結![]() | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 293 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![]() |
撮影 | 電子線照射量: 70 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正![]() | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
対称性 | 点対称性![]() ![]() | ||||||||||||||||||||||||
3次元再構成![]() | 解像度: 3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 17708 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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