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- EMDB-24073: Complex of Bet v 1 with the Fab fragments of a three antibody cocktail -
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基本情報
登録情報 | データベース: EMDB / ID: EMD-24073 | |||||||||
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タイトル | Complex of Bet v 1 with the Fab fragments of a three antibody cocktail | |||||||||
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機能・相同性 | ![]() response to biotic stimulus / abscisic acid binding / abscisic acid-activated signaling pathway / protein phosphatase inhibitor activity / defense response / signaling receptor activity / nucleus / cytoplasm 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: 3.2 Å | |||||||||
![]() | Romero-Hernandez A / Franklin MC | |||||||||
![]() | ![]() タイトル: Targeting immunodominant Bet v 1 epitopes with monoclonal antibodies prevents the birch allergic response. 著者: Amanda Atanasio / Matthew C Franklin / Vishal Kamat / Annabel Romero Hernandez / Ashok Badithe / Li-Hong Ben / Jennifer Jones / Joannie Bautista / George D Yancopoulos / William Olson / ...著者: Amanda Atanasio / Matthew C Franklin / Vishal Kamat / Annabel Romero Hernandez / Ashok Badithe / Li-Hong Ben / Jennifer Jones / Joannie Bautista / George D Yancopoulos / William Olson / Andrew J Murphy / Matthew A Sleeman / Jamie M Orengo 要旨: BACKGROUND: Blocking the major cat allergen, Fel d 1, with mAbs was effective in preventing an acute cat allergic response. OBJECTIVES: This study sought to extend the allergen-specific antibody approach and demonstrate that a combination of mAbs targeting Bet v 1, the immunodominant and most abundant allergenic protein ...OBJECTIVES: This study sought to extend the allergen-specific antibody approach and demonstrate that a combination of mAbs targeting Bet v 1, the immunodominant and most abundant allergenic protein in birch pollen, can prevent the birch allergic response. 手法: Bet v 1-specific mAbs, REGN5713, REGN5714, and REGN5715, were isolated using the VelocImmune platform. Surface plasmon resonance, x-ray crystallography, and cryo-electron microscopy ...手法: Bet v 1-specific mAbs, REGN5713, REGN5714, and REGN5715, were isolated using the VelocImmune platform. Surface plasmon resonance, x-ray crystallography, and cryo-electron microscopy determined binding kinetics and structural data. Inhibition of IgE-binding, basophil activation, and mast cell degranulation were assessed via blocking ELISA, flow cytometry, and the passive cutaneous anaphylaxis mouse model. RESULTS: REGN5713, REGN5714, and REGN5715 bind with high affinity and noncompetitively to Bet v 1. A cocktail of all 3 antibodies, REGN5713/14/15, blocks IgE binding to Bet v 1 and inhibits Bet v 1- ...RESULTS: REGN5713, REGN5714, and REGN5715 bind with high affinity and noncompetitively to Bet v 1. A cocktail of all 3 antibodies, REGN5713/14/15, blocks IgE binding to Bet v 1 and inhibits Bet v 1- and birch pollen extract-induced basophil activation ex vivo and mast cell degranulation in vivo. Crystal structures of the complex of Bet v 1 with immunoglobulin antigen-binding fragments of REGN5713 or REGN5715 show distinct interaction sites on Bet v 1. Cryo-electron microscopy reveals a planar and roughly symmetrical complex formed by REGN5713/14/15 bound to Bet v 1. CONCLUSIONS: These data confirm the immunodominance of Bet v 1 in birch allergy and demonstrate blockade of the birch allergic response with REGN5713/14/15. Structural analyses show simultaneous ...CONCLUSIONS: These data confirm the immunodominance of Bet v 1 in birch allergy and demonstrate blockade of the birch allergic response with REGN5713/14/15. Structural analyses show simultaneous binding of REGN5713, REGN5714, and REGN5715 with substantial areas of Bet v 1 exposed, suggesting that targeting specific epitopes is sufficient to block the allergic response. | |||||||||
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 37.2 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 17.9 KB 17.9 KB | 表示 表示 | ![]() |
画像 | ![]() | 83.4 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 457.7 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 457.3 KB | 表示 | |
XML形式データ | ![]() | 6.2 KB | 表示 | |
CIF形式データ | ![]() | 7 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
EMDBのページ | ![]() ![]() |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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ボクセルのサイズ | X=Y=Z: 1.04 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
+全体 : Complex of Bet v 1 with the Fab fragments of a three antibody cocktail
+超分子 #1: Complex of Bet v 1 with the Fab fragments of a three antibody cocktail
+超分子 #2: Major pollen allergen
+超分子 #3: antibody cocktail
+分子 #1: REGN5713 antibody Fab fragment heavy chain
+分子 #2: REGN5713 antibody Fab fragment light chain
+分子 #3: Major pollen allergen Bet v 1-A
+分子 #4: REGN5715 antibody Fab fragment heavy chain
+分子 #5: REGN5715 antibody Fab fragment light chain
+分子 #6: REGN5714 antibody Fab fragment light chain
+分子 #7: REGN5714 antibody Fab fragment heavy chain
-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: 7.5 |
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凍結 | 凍結剤: ETHANE / 装置: FEI VITROBOT MARK IV |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 44.0 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 |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 149585 |
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初期 角度割当 | タイプ: RANDOM ASSIGNMENT |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |