+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-6002 | |||||||||
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タイトル | Fako virus virion: a newly-isolated reovirus has the simplest genomic and structural organization of any reovirus | |||||||||
マップデータ | Reconstruction of virions of Fako virus grown in insect cells, low-pass filtered to the map resolution and automasked in EMAN2 | |||||||||
試料 |
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キーワード | virus / Reoviridae / Spinareovirinae / Dinovernavirus / Fako virus / FAKV / dsRNA virus / invertebrate virus / reovirus / Aedes / dsRNA | |||||||||
機能・相同性 | 機能・相同性情報 : / : / : / : / Reovirus VP3 protein, guanylyltransferase (GTase) / Reovirus turret protein, bridge domain / Reovirus VP3 protein, Methyltransferase domain 1 / Reovirus VP3 protein, Methyltransferase domain 2 / : / Inner layer core protein VP1-like, C-terminal 類似検索 - ドメイン・相同性 | |||||||||
生物種 | Fako virus (ウイルス) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 17.0 Å | |||||||||
データ登録者 | Auguste AJ / Kaelber JT / Fokam EB / Guzman H / Carrington CVF / Erasmus JH / Kamgang B / Popov VL / Jakana J / Liu X ...Auguste AJ / Kaelber JT / Fokam EB / Guzman H / Carrington CVF / Erasmus JH / Kamgang B / Popov VL / Jakana J / Liu X / Wood TG / Widen SG / Vasilakis N / Tesh RB / Chiu W / Weaver SC | |||||||||
引用 | ジャーナル: J Virol / 年: 2015 タイトル: A newly isolated reovirus has the simplest genomic and structural organization of any reovirus. 著者: Albert J Auguste / Jason T Kaelber / Eric B Fokam / Hilda Guzman / Christine V F Carrington / Jesse H Erasmus / Basile Kamgang / Vsevolod L Popov / Joanita Jakana / Xiangan Liu / Thomas G ...著者: Albert J Auguste / Jason T Kaelber / Eric B Fokam / Hilda Guzman / Christine V F Carrington / Jesse H Erasmus / Basile Kamgang / Vsevolod L Popov / Joanita Jakana / Xiangan Liu / Thomas G Wood / Steven G Widen / Nikos Vasilakis / Robert B Tesh / Wah Chiu / Scott C Weaver / 要旨: A total of 2,691 mosquitoes representing 17 species was collected from eight locations in southwest Cameroon and screened for pathogenic viruses. Ten isolates of a novel reovirus (genus ...A total of 2,691 mosquitoes representing 17 species was collected from eight locations in southwest Cameroon and screened for pathogenic viruses. Ten isolates of a novel reovirus (genus Dinovernavirus) were detected by culturing mosquito pools on Aedes albopictus (C6/36) cell cultures. A virus that caused overt cytopathic effects was isolated, but it did not infect vertebrate cells or produce detectable disease in infant mice after intracerebral inoculation. The virus, tentatively designated Fako virus (FAKV), represents the first 9-segment, double-stranded RNA (dsRNA) virus to be isolated in nature. FAKV appears to have a broad mosquito host range, and its detection in male specimens suggests mosquito-to-mosquito transmission in nature. The structure of the T=1 FAKV virion, determined to subnanometer resolution by cryoelectron microscopy (cryo-EM), showed only four proteins per icosahedral asymmetric unit: a dimer of the major capsid protein, one turret protein, and one clamp protein. While all other turreted reoviruses of known structures have at least two copies of the clamp protein per asymmetric unit, FAKV's clamp protein bound at only one conformer of the major capsid protein. The FAKV capsid architecture and genome organization represent the most simplified reovirus described to date, and phylogenetic analysis suggests that it arose from a more complex ancestor by serial loss-of-function events. IMPORTANCE: We describe the detection, genetic, phenotypic, and structural characteristics of a novel Dinovernavirus species isolated from mosquitoes collected in Cameroon. The virus, tentatively ...IMPORTANCE: We describe the detection, genetic, phenotypic, and structural characteristics of a novel Dinovernavirus species isolated from mosquitoes collected in Cameroon. The virus, tentatively designated Fako virus (FAKV), is related to both single-shelled and partially double-shelled viruses. The only other described virus in this genus was isolated from cultured mosquito cells. It was previously unclear whether the phenotypic characteristics of that virus were reflective of this genus in nature or were altered during serial passaging in the chronically infected cell line. FAKV is a naturally occurring single-shelled reovirus with a unique virion architecture that lacks several key structural elements thought to stabilize a single-shelled reovirus virion, suggesting what may be the minimal number of proteins needed to form a viable reovirus particle. FAKV evolved from more complex ancestors by losing a genome segment and several virion proteins. | |||||||||
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_6002.map.gz | 34.3 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-6002-v30.xml emd-6002.xml | 10.8 KB 10.8 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_6002.png | 264.6 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-6002 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-6002 | 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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-マップ
ファイル | ダウンロード / ファイル: emd_6002.map.gz / 形式: CCP4 / 大きさ: 122.1 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | Reconstruction of virions of Fako virus grown in insect cells, low-pass filtered to the map resolution and automasked in EMAN2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: 3.62 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 : Fako virus virion
全体 | 名称: Fako virus virion |
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要素 |
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-超分子 #1000: Fako virus virion
超分子 | 名称: Fako virus virion / タイプ: sample / ID: 1000 集合状態: icosahedral capsid of 60 asymmetric units with 4 proteins each Number unique components: 1 |
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分子量 | 理論値: 33 MDa |
-超分子 #1: Fako virus
超分子 | 名称: Fako virus / タイプ: virus / ID: 1 / 生物種: Fako virus / ウイルスタイプ: VIRION / ウイルス・単離状態: SPECIES / ウイルス・エンベロープ: No / ウイルス・中空状態: No |
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宿主 | 生物種: Aedes albopictus (ヒトスジシマカ) / 別称: INVERTEBRATES |
Host system | 生物種: Aedes aegypti (ネッタイシマカ) / 組換細胞: C6/36 |
分子量 | 理論値: 33 MDa |
ウイルス殻 | Shell ID: 1 / 直径: 580 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: 7.8 / 詳細: 10 mM Tris-HCl, 10 mM MgCl2, 1 mM EDTA, 0.1 M NaCl |
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グリッド | 詳細: 200 mesh copper Quantifoil R 2/2, glow discharged |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / 装置: FEI VITROBOT MARK IV / 手法: Blot for 3.5 seconds. |
-電子顕微鏡法
顕微鏡 | JEOL 2010F |
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温度 | 平均: 94 K |
アライメント法 | Legacy - 非点収差: Objective lens twofold astigmatism was corrected at 120,000 times magnification. |
日付 | 2014年2月26日 |
撮影 | カテゴリ: CCD フィルム・検出器のモデル: GATAN ULTRASCAN 4000 (4k x 4k) 実像数: 68 / 平均電子線量: 25 e/Å2 / ビット/ピクセル: 32 |
電子線 | 加速電圧: 200 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 倍率(公称値): 30000 |
試料ステージ | 試料ホルダー: Gatan 626 with 70 degree clipring / 試料ホルダーモデル: GATAN LIQUID NITROGEN |
-画像解析
CTF補正 | 詳細: CTF fit for particles in a micrograph, corrected per particle |
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最終 再構成 | アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 17.0 Å / 解像度の算出法: OTHER / ソフトウェア - 名称: EMAN2 / 使用した粒子像数: 2464 |
最終 2次元分類 | クラス数: 35 |