+
データを開く
-
基本情報
登録情報 | データベース: EMDB / ID: EMD-1326 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | Minute virus of mice, a parvovirus, in complex with the Fab fragment of a neutralizing monoclonal antibody. | |||||||||
![]() | Minute | |||||||||
![]() |
| |||||||||
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: 7.0 Å | |||||||||
![]() | Kaufmann B / Lopez-Bueno A / Garcia-Mateu M / Chipman PR / Nelson CDS / Parrish CR / Almendral JM / Rossmann MG | |||||||||
![]() | ![]() タイトル: Minute virus of mice, a parvovirus, in complex with the Fab fragment of a neutralizing monoclonal antibody. 著者: Bärbel Kaufmann / Alberto López-Bueno / Mauricio G Mateu / Paul R Chipman / Christian D S Nelson / Colin R Parrish / José M Almendral / Michael G Rossmann / ![]() 要旨: The structure of virus-like particles of the lymphotropic, immunosuppressive strain of minute virus of mice (MVMi) in complex with the neutralizing Fab fragment of the mouse monoclonal antibody (MAb) ...The structure of virus-like particles of the lymphotropic, immunosuppressive strain of minute virus of mice (MVMi) in complex with the neutralizing Fab fragment of the mouse monoclonal antibody (MAb) B7 was determined by cryo-electron microscopy to 7-A resolution. The Fab molecule recognizes a conformational epitope at the vertex of a three-fold protrusion on the viral surface, thereby simultaneously engaging three symmetry-related viral proteins in binding. The location of the epitope close to the three-fold axis is consistent with the previous analysis of MVMi mutants able to escape from the B7 antibody. The binding site close to the symmetry axes sterically forbids the binding of more than one Fab molecule per spike. MAb as well as the Fab molecules inhibits the binding of the minute virus of mice (MVM) to permissive cells but can also neutralize MVM postattachment. This finding suggests that the interaction of B7 with three symmetry-related viral subunits at each spike hinders structural transitions in the viral capsid essential during viral entry. | |||||||||
履歴 |
|
-
構造の表示
ムービー |
![]() |
---|---|
構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
-
ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 30.2 MB | ![]() | |
---|---|---|---|---|
ヘッダ (付随情報) | ![]() ![]() | 12.7 KB 12.7 KB | 表示 表示 | ![]() |
画像 | ![]() | 47.1 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 269.7 KB | 表示 | ![]() |
---|---|---|---|---|
文書・詳細版 | ![]() | 268.8 KB | 表示 | |
XML形式データ | ![]() | 6.5 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
-
リンク
EMDBのページ | ![]() ![]() |
---|
-
マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
注釈 | Minute | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.47371 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
|
-添付データ
-
試料の構成要素
-全体 : VLPs of Minute Virus of Mice strain i complexed with Fab fragment...
全体 | 名称: VLPs of Minute Virus of Mice strain i complexed with Fab fragment of neutralizing monoclonal antibody B7 |
---|---|
要素 |
|
-超分子 #1000: VLPs of Minute Virus of Mice strain i complexed with Fab fragment...
超分子 | 名称: VLPs of Minute Virus of Mice strain i complexed with Fab fragment of neutralizing monoclonal antibody B7 タイプ: sample / ID: 1000 集合状態: twenty Fab fragments bind to one icosahedral virus particle Number unique components: 2 |
---|---|
分子量 | 理論値: 4.84 MDa |
-超分子 #1: Minute Virus of Mice virus like particles
超分子 | 名称: Minute Virus of Mice virus like particles / タイプ: virus / ID: 1 / Name.synonym: MVMi / 詳細: icosahedral particle / 生物種: Minute Virus of Mice virus like particles / ウイルスタイプ: VIRUS-LIKE PARTICLE / ウイルス・単離状態: STRAIN / ウイルス・エンベロープ: No / ウイルス・中空状態: Yes / Syn species name: MVMi |
---|---|
宿主 | 別称: VERTEBRATES |
分子量 | 実験値: 3.8 MDa |
ウイルス殻 | Shell ID: 1 / 名称: VP2 protein shell / 直径: 280 Å / T番号(三角分割数): 1 |
-分子 #1: B7 Fab fragment
分子 | 名称: B7 Fab fragment / タイプ: protein_or_peptide / ID: 1 / Name.synonym: Fab B7 / 詳細: monomer / 集合状態: monomer / 組換発現: Yes |
---|---|
由来(天然) | 生物種: ![]() ![]() |
分子量 | 実験値: 50 KDa |
組換発現 | 生物種: hybridoma cell line (unknown) |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
---|---|
![]() | 単粒子再構成法 |
試料の集合状態 | particle |
-
試料調製
緩衝液 | pH: 7.5 / 詳細: 10mM Tris-HCl, 100mM NaCl |
---|---|
グリッド | 詳細: 400 mesh copper |
凍結 | 凍結剤: ETHANE / 装置: HOMEMADE PLUNGER 詳細: Vitrification instrument: guillotine-style plunge freezing device 手法: A small vial of ethane is placed inside a larger liquid nitrogen reservoir. The grid holding a few microliters of the sample is held in place at the bottom of a plunger by the means of fine ...手法: A small vial of ethane is placed inside a larger liquid nitrogen reservoir. The grid holding a few microliters of the sample is held in place at the bottom of a plunger by the means of fine tweezers. Once the ethane in the vial is completely frozen, it needs to be slightly melted. When the liquid ethane is ready, a piece of filter paper is then pressed against the sample to blot of excess buffer, sufficient to leave a thin layer on the grid. After a predetermined time, the filter paper is removed, and the plunger is allowed to drop into the liquid ethane. Once the grid enters the liquid ethane, the sample is rapidly frozen, and the grid is transferred under liquid nitrogen to a storage box immersed liquid nitrogen for later use in the microscope. |
-
電子顕微鏡法
顕微鏡 | FEI/PHILIPS CM300FEG/T |
---|---|
温度 | 平均: 98 K |
アライメント法 | Legacy - 非点収差: live FFT at 200K |
詳細 | low dose |
日付 | 2003年10月28日 |
撮影 | カテゴリ: FILM / フィルム・検出器のモデル: KODAK SO-163 FILM / デジタル化 - スキャナー: ZEISS SCAI / デジタル化 - サンプリング間隔: 7 µm / 実像数: 14 / 平均電子線量: 22 e/Å2 / Od range: 1.15 / ビット/ピクセル: 8 |
Tilt angle min | 0 |
Tilt angle max | 0 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 倍率(補正後): 47190 / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.0 mm / 最大 デフォーカス(公称値): 3.198 µm / 最小 デフォーカス(公称値): 2.052 µm / 倍率(公称値): 45000 |
試料ステージ | 試料ホルダー: EUCENTRIC / 試料ホルダーモデル: GATAN LIQUID NITROGEN |
-
画像解析
CTF補正 | 詳細: each particle |
---|---|
最終 再構成 | 想定した対称性 - 点群: I (正20面体型対称) / アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 7.0 Å / 解像度の算出法: FSC 0.5 CUT-OFF / ソフトウェア - 名称: EMPFT, POR, P3DR 詳細: final map includes data to 6.8 Ang resolution (fsc 0.3 cut-off); magnification of final map standardized to a map calculated from MVMi model coordinates (PDB accession no 1Z1C) resulting in ...詳細: final map includes data to 6.8 Ang resolution (fsc 0.3 cut-off); magnification of final map standardized to a map calculated from MVMi model coordinates (PDB accession no 1Z1C) resulting in final pixel separation of 1.474Ang 使用した粒子像数: 6375 |
-原子モデル構築 1
ソフトウェア | 名称: EMFIT SR5 |
---|---|
詳細 | Protocol: rigid body. The atomic coordinates of a Fab B7 homology model were fitted into difference map calculated between the MVM-Fab complex and MVM on its own. |
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT 当てはまり具合の基準: sum of density at each atomic positon, lack of atoms in negative density, distance restraints |