+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-5102 | |||||||||
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タイトル | Immature Dengue Virus (DENV) in complex with Fab fragments of the anti-fusion loop antibody E53 | |||||||||
マップデータ | CryoEM reconstruction of immature Dengue Virus (DENV) in complex with Fab fragments of the anti-fusion loop antibody E53. | |||||||||
試料 |
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キーワード | Dengue Virus / DENV / immature / fusion loop / Fab / E53 | |||||||||
機能・相同性 | 機能・相同性情報 flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / host cell mitochondrion / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / ribonucleoside triphosphate phosphatase activity / double-stranded RNA binding / nucleoside-triphosphate phosphatase / channel activity / viral capsid ...flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / host cell mitochondrion / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / ribonucleoside triphosphate phosphatase activity / double-stranded RNA binding / nucleoside-triphosphate phosphatase / channel activity / viral capsid / monoatomic ion transmembrane transport / mRNA (guanine-N7)-methyltransferase / viral nucleocapsid / methyltransferase cap1 / clathrin-dependent endocytosis of virus by host cell / mRNA (nucleoside-2'-O-)-methyltransferase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / RNA helicase activity / host cell perinuclear region of cytoplasm / protein dimerization activity / host cell endoplasmic reticulum membrane / RNA helicase / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / symbiont-mediated suppression of host innate immune response / induction by virus of host autophagy / RNA-directed RNA polymerase / viral RNA genome replication / serine-type endopeptidase activity / RNA-dependent RNA polymerase activity / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / viral envelope / host cell nucleus / virion attachment to host cell / structural molecule activity / virion membrane / ATP hydrolysis activity / proteolysis / extracellular region / ATP binding / membrane / metal ion binding 類似検索 - 分子機能 | |||||||||
生物種 | Immature Dengue Virus | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 23.0 Å | |||||||||
データ登録者 | Cherrier MV / Kaufmann B / Nybakken GE / Lok SM / Warren JT / Nelson CA / Kostyuchenko VA / Holdaway HA / Chipman PR / Kuhn RJ ...Cherrier MV / Kaufmann B / Nybakken GE / Lok SM / Warren JT / Nelson CA / Kostyuchenko VA / Holdaway HA / Chipman PR / Kuhn RJ / Diamond MS / Rossmann MG / Fremont DH | |||||||||
引用 | ジャーナル: EMBO J / 年: 2009 タイトル: Structural basis for the preferential recognition of immature flaviviruses by a fusion-loop antibody. 著者: Mickaël V Cherrier / Bärbel Kaufmann / Grant E Nybakken / Shee-Mei Lok / Julia T Warren / Beverly R Chen / Christopher A Nelson / Victor A Kostyuchenko / Heather A Holdaway / Paul R Chipman ...著者: Mickaël V Cherrier / Bärbel Kaufmann / Grant E Nybakken / Shee-Mei Lok / Julia T Warren / Beverly R Chen / Christopher A Nelson / Victor A Kostyuchenko / Heather A Holdaway / Paul R Chipman / Richard J Kuhn / Michael S Diamond / Michael G Rossmann / Daved H Fremont / 要旨: Flaviviruses are a group of human pathogens causing severe encephalitic or hemorrhagic diseases that include West Nile, dengue and yellow fever viruses. Here, using X-ray crystallography we have ...Flaviviruses are a group of human pathogens causing severe encephalitic or hemorrhagic diseases that include West Nile, dengue and yellow fever viruses. Here, using X-ray crystallography we have defined the structure of the flavivirus cross-reactive antibody E53 that engages the highly conserved fusion loop of the West Nile virus envelope glycoprotein. Using cryo-electron microscopy, we also determined that E53 Fab binds preferentially to spikes in noninfectious, immature flavivirions but is unable to bind significantly to mature virions, consistent with the limited solvent exposure of the epitope. We conclude that the neutralizing impact of E53 and likely similar fusion-loop-specific antibodies depends on its binding to the frequently observed immature component of flavivirus particles. Our results elucidate how fusion-loop antibodies, which comprise a significant fraction of the humoral response against flaviviruses, can function to control infection without appreciably recognizing mature virions. As these highly cross-reactive antibodies are often weakly neutralizing they also may contribute to antibody-dependent enhancement and flavi virus pathogenesis thereby complicating development of safe and effective vaccines. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
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 | emd_5102.map.gz | 14.7 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-5102-v30.xml emd-5102.xml | 13.2 KB 13.2 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_5102_1.png | 294.8 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-5102 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-5102 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_5102_validation.pdf.gz | 348.4 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_5102_full_validation.pdf.gz | 347.9 KB | 表示 | |
XML形式データ | emd_5102_validation.xml.gz | 6.1 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5102 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5102 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_5102.map.gz / 形式: CCP4 / 大きさ: 74.1 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | CryoEM reconstruction of immature Dengue Virus (DENV) in complex with Fab fragments of the anti-fusion loop antibody E53. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 2.69 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
-試料の構成要素
-全体 : Immature Dengue Virus complexed with E53 Fab
全体 | 名称: Immature Dengue Virus complexed with E53 Fab |
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要素 |
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-超分子 #1000: Immature Dengue Virus complexed with E53 Fab
超分子 | 名称: Immature Dengue Virus complexed with E53 Fab / タイプ: sample / ID: 1000 集合状態: T1 icosahedron with three E monomers and two Fab per asymmetric unit Number unique components: 2 |
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分子量 | 理論値: 24.4 MDa |
-超分子 #1: Immature Dengue Virus
超分子 | 名称: Immature Dengue Virus / タイプ: virus / ID: 1 / Name.synonym: Immature Dengue Virus / 生物種: Immature Dengue Virus / データベース: NCBI / ウイルスタイプ: VIRION / ウイルス・単離状態: STRAIN / ウイルス・エンベロープ: Yes / ウイルス・中空状態: No / Syn species name: Immature Dengue Virus |
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宿主 | 生物種: Homo sapiens (ヒト) / 別称: VERTEBRATES |
分子量 | 理論値: 18.8 MDa |
ウイルス殻 | Shell ID: 1 / 直径: 600 Å / T番号(三角分割数): 1 |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.6 / 詳細: 12 mM Tris-HCl, 120 mM NaCl, 1 mM EDTA |
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凍結 | 凍結剤: ETHANE / 装置: HOMEMADE PLUNGER 詳細: Vitrification instrument: Guillotine-style plunge freezeing 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 |
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温度 | 平均: 98 K |
アライメント法 | Legacy - 非点収差: live FFT / Legacy - Electron beam tilt params: 0 |
詳細 | low dose |
日付 | 2008年4月4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: NIKON SUPER COOLSCAN 9000 デジタル化 - サンプリング間隔: 2.69 µm / 実像数: 23 / 平均電子線量: 15.0 e/Å2 / ビット/ピクセル: 16 |
Tilt angle min | 0 |
Tilt angle max | 0 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 倍率(補正後): 47244 / 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): 2.728 µm / 最小 デフォーカス(公称値): 1.876 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
詳細 | 400 mesh copper grid |
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CTF補正 | 詳細: Each particle |
最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 23.0 Å / 解像度の算出法: FSC 0.5 CUT-OFF / ソフトウェア - 名称: Spider, XMIPP / 使用した粒子像数: 2741 |
-原子モデル構築 1
初期モデル | PDB ID: |
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ソフトウェア | 名称: EMFIT |
詳細 | Protocol: Rigid Body. Each E molecule was divided into two rigid bodies, DI-DIII and DII-pr |
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT |
得られたモデル | PDB-3c6d: PDB-3ixy: |
-原子モデル構築 2
初期モデル | PDB ID: |
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ソフトウェア | 名称: EMFIT |
詳細 | Protocol: Rigid Body. Each E molecule was divided into two rigid bodies, DI-DIII and DII-pr |
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT |
得られたモデル | PDB-3c6d: PDB-3ixy: |