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データを開く
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基本情報
登録情報 | ![]() | |||||||||
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タイトル | 12 Angstrom resolution cryo-electron microscopy reconstruction of a recombinant active ribonucleoprotein particle of influenza virus (9-fold symmetrized). | |||||||||
![]() | Density map of a influenza virus recombinant active RNP refined with 9-fold symmetry. Density corresponding to the polymerase has been smeared out due to the symmetrization. | |||||||||
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![]() | Influenza / RNA viruses / nucleoprotein / RNA | |||||||||
機能・相同性 | ![]() cRNA Synthesis / Assembly of Viral Components at the Budding Site / Influenza Infection / Fusion of the Influenza Virion to the Host Cell Endosome / Release / Budding / Packaging of Eight RNA Segments / Uncoating of the Influenza Virion / Entry of Influenza Virion into Host Cell via Endocytosis / vRNA Synthesis ...cRNA Synthesis / Assembly of Viral Components at the Budding Site / Influenza Infection / Fusion of the Influenza Virion to the Host Cell Endosome / Release / Budding / Packaging of Eight RNA Segments / Uncoating of the Influenza Virion / Entry of Influenza Virion into Host Cell via Endocytosis / vRNA Synthesis / Viral RNP Complexes in the Host Cell Nucleus / Transport of Ribonucleoproteins into the Host Nucleus / NEP/NS2 Interacts with the Cellular Export Machinery / Viral Messenger RNA Synthesis / vRNP Assembly / helical viral capsid / Viral mRNA Translation / viral penetration into host nucleus / host cell / viral nucleocapsid / symbiont entry into host cell / ribonucleoprotein complex / host cell nucleus / structural molecule activity / RNA binding / extracellular region / identical protein binding / plasma membrane 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 / ネガティブ染色法 / 解像度: 12.0 Å | |||||||||
![]() | Coloma R / Valpuesta JM / Arranz R / Carrascosa JL / Ortin J / Martin-Benito J | |||||||||
![]() | ![]() タイトル: The structure of a biologically active influenza virus ribonucleoprotein complex. 著者: Rocío Coloma / José M Valpuesta / Rocío Arranz / José L Carrascosa / Juan Ortín / Jaime Martín-Benito / ![]() 要旨: The influenza viruses contain a segmented, single-stranded RNA genome of negative polarity. Each RNA segment is encapsidated by the nucleoprotein and the polymerase complex into ribonucleoprotein ...The influenza viruses contain a segmented, single-stranded RNA genome of negative polarity. Each RNA segment is encapsidated by the nucleoprotein and the polymerase complex into ribonucleoprotein particles (RNPs), which are responsible for virus transcription and replication. Despite their importance, information about the structure of these RNPs is scarce. We have determined the three-dimensional structure of a biologically active recombinant RNP by cryo-electron microscopy. The structure shows a nonameric nucleoprotein ring (at 12 Angstrom resolution) with two monomers connected to the polymerase complex (at 18 Angstrom resolution). Docking the atomic structures of the nucleoprotein and polymerase domains, as well as mutational analyses, has allowed us to define the interactions between the functional elements of the RNP and to propose the location of the viral RNA. Our results provide the first model for a functional negative-stranded RNA virus ribonucleoprotein complex. The structure reported here will serve as a framework to generate a quasi-atomic model of the molecular machine responsible for viral RNA synthesis and to test new models for virus RNA replication and transcription. | |||||||||
履歴 |
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構造の表示
構造ビューア | EMマップ: ![]() ![]() ![]() |
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添付画像 |
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ダウンロードとリンク
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マップデータ | ![]() | 14.1 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 10 KB 10 KB | 表示 表示 | ![]() |
画像 | ![]() | 214.7 KB | ||
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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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | Density map of a influenza virus recombinant active RNP refined with 9-fold symmetry. Density corresponding to the polymerase has been smeared out due to the symmetrization. | ||||||||||||||||||||||||||||||||||||
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: 2.8 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
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試料の構成要素
-全体 : influenza virus ribonucleoprotein particle from INFLUENZA A VIRUS...
全体 | 名称: influenza virus ribonucleoprotein particle from INFLUENZA A VIRUS STRAIN A/VICTORIA/3/75 (H3N1 AFRICAN GREEN MONKEY |
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要素 |
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-超分子 #1000: influenza virus ribonucleoprotein particle from INFLUENZA A VIRUS...
超分子 | 名称: influenza virus ribonucleoprotein particle from INFLUENZA A VIRUS STRAIN A/VICTORIA/3/75 (H3N1 AFRICAN GREEN MONKEY タイプ: sample / ID: 1000 集合状態: Nine monomers of nucleoprotein bound to a single stranded RNA Number unique components: 2 |
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分子量 | 理論値: 600 KDa |
-分子 #1: nucleoprotein
分子 | 名称: nucleoprotein / タイプ: protein_or_peptide / ID: 1 / Name.synonym: nucleoprotein / コピー数: 9 / 集合状態: monomer / 組換発現: Yes |
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由来(天然) | 生物種: ![]() 細胞中の位置: nucleus |
分子量 | 理論値: 56 KDa |
組換発現 | 生物種: ![]() |
-分子 #2: RNA
分子 | 名称: RNA / タイプ: rna / ID: 2 / Name.synonym: RNA / 分類: OTHER / Structure: SINGLE STRANDED / Synthetic?: No |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 82 KDa |
-実験情報
-構造解析
手法 | ネガティブ染色法, 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: 8 詳細: 50mM Tris-HCl,100mM KCl,5mM MgCl2,0.5% Igepal,150mM imidazole |
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染色 | タイプ: NEGATIVE 詳細: Samples were applied to one side of a holey carbon grid, blotted and plunged into liquid ethane |
凍結 | 凍結剤: ETHANE / 装置: LEICA PLUNGER / 詳細: Vitrification instrument: Leica plunger |
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電子顕微鏡法
顕微鏡 | FEI TECNAI F20 |
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撮影 | 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: 159 / 詳細: downsampling factor 2. / ビット/ピクセル: 8 |
電子線 | 加速電圧: 200 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.2 mm |
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 |
実験機器 | ![]() モデル: Tecnai F20 / 画像提供: FEI Company |
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画像解析
CTF補正 | 詳細: Each plate |
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最終 再構成 | 想定した対称性 - 点群: C9 (9回回転対称) / アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 12.0 Å / 解像度の算出法: FSC 0.33 CUT-OFF / ソフトウェア - 名称: spider / 使用した粒子像数: 9571 |