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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: 9cfe | |||||||||||||||||||||||||||
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| タイトル | Cryo-EM Local Refinement of Antibody 19-77 in complex with prefusion SARS-CoV-2 Spike glycoprotein RBD | |||||||||||||||||||||||||||
要素 |
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キーワード | VIRAL PROTEIN/IMMUNE SYSTEM / Neutralizing Antibody / Viral Fusion Protein / SARS-CoV-2 / VIRAL PROTEIN-IMMUNE SYSTEM complex / VIRAL PROTEIN | |||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報symbiont-mediated disruption of host tissue / Maturation of spike protein / 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 / membrane fusion ...symbiont-mediated disruption of host tissue / Maturation of spike protein / 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 / membrane fusion / entry receptor-mediated virion attachment to host cell / 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 / endocytosis involved in viral entry into host cell / receptor ligand activity / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont entry into host cell / 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 | Homo sapiens (ヒト)![]() | |||||||||||||||||||||||||||
| 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: 3.03 Å | |||||||||||||||||||||||||||
データ登録者 | Casner, R.G. / Shapiro, L. | |||||||||||||||||||||||||||
| 資金援助 | 中国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Optimizing a human monoclonal antibody for better neutralization of SARS-CoV-2. 著者: Qian Wang / Yicheng Guo / Ryan G Casner / Jian Yu / Manoj S Nair / Jerren Ho / Eswar R Reddem / Ian A Mellis / Madeline Wu / Chih-Chen Tzang / Hsiang Hong / Yaoxing Huang / Lawrence Shapiro / ...著者: Qian Wang / Yicheng Guo / Ryan G Casner / Jian Yu / Manoj S Nair / Jerren Ho / Eswar R Reddem / Ian A Mellis / Madeline Wu / Chih-Chen Tzang / Hsiang Hong / Yaoxing Huang / Lawrence Shapiro / Lihong Liu / David D Ho / ![]() 要旨: SARS-CoV-2 has largely evolved to resist antibody pressure, with each successive viral variant becoming more and more resistant to serum antibodies in the population. This evolution renders all ...SARS-CoV-2 has largely evolved to resist antibody pressure, with each successive viral variant becoming more and more resistant to serum antibodies in the population. This evolution renders all previously authorized anti-spike therapeutic monoclonal antibodies inactive, and it threatens the remaining pipelines against COVID-19. We report herein the isolation of a human monoclonal antibody with a broad but incomplete SARS-CoV-2 neutralization profile, but structural analyses and mutational scanning lead to the engineering of variants that result in greater antibody flexibility while binding to the viral spike. Three such optimized monoclonal antibodies neutralize all SARS-CoV-2 strains tested with much improved potency and breadth, including against subvariants XEC and LP.8.1. The findings of this study not only present antibody candidates for clinical development against COVID-19, but also introduce an engineering approach to improve antibody activity via increasing conformational flexibility. | |||||||||||||||||||||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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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 | 9cfe.cif.gz | 160.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9cfe.ent.gz | 128.6 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9cfe.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/cf/9cfe ftp://data.pdbj.org/pub/pdb/validation_reports/cf/9cfe | HTTPS FTP |
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-関連構造データ
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リンク
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集合体
| 登録構造単位 | ![]()
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| 1 |
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要素
| #1: 抗体 | 分子量: 12585.059 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: Homo sapiens (ヒト) |
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| #2: 抗体 | 分子量: 11901.239 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: Homo sapiens (ヒト) |
| #3: タンパク質 | 分子量: 21658.289 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: S, 2 / 発現宿主: Homo sapiens (ヒト) / 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: Antibody 19-77 in complex with prefusion SARS-CoV-2 Spike glycoprotein タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 分子量 | 実験値: NO |
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) |
| 緩衝液 | pH: 7.4 |
| 試料 | 濃度: 1 mg/ml / 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: FEI TITAN KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 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): 800 nm |
| 撮影 | 電子線照射量: 58 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k 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: 3.03 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 329845 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 |
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万見について




Homo sapiens (ヒト)

中国, 1件
引用








PDBj







FIELD EMISSION GUN