+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 5urf | ||||||
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タイトル | The structure of human bocavirus 1 | ||||||
要素 | viral protein 3ウイルス性 | ||||||
キーワード | VIRUS LIKE PARTICLE (ウイルス様粒子) / HBoV1 / human parvovirus 1 (パルボウイルス) / parvovirus (パルボウイルス) / respiratory tract infection | ||||||
機能・相同性 | 機能・相同性情報 phospholipase A2 activity => GO:0004623 / phospholipase A2 activity => GO:0004623 / ホスホリパーゼA2 / phospholipase A2 activity / T=1 icosahedral viral capsid / lipid catabolic process / カプシド / host cell cytoplasm / host cell nucleus / structural molecule activity 類似検索 - 分子機能 | ||||||
生物種 | Human bocavirus 1 (ウイルス) | ||||||
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: 2.9 Å | ||||||
データ登録者 | Mietzsch, M. / Kailasan, S. / Garrison, J. / Ilyas, M. / Chipman, P. / Kandola, K. / Jansen, M. / Spear, J. / Sousa, D. / McKenna, R. ...Mietzsch, M. / Kailasan, S. / Garrison, J. / Ilyas, M. / Chipman, P. / Kandola, K. / Jansen, M. / Spear, J. / Sousa, D. / McKenna, R. / Soderlund-Venermo, M. / Baker, T. / Agbandje-McKenna, M. | ||||||
引用 | ジャーナル: J Virol / 年: 2017 タイトル: Structural Insights into Human Bocaparvoviruses. 著者: Mario Mietzsch / Shweta Kailasan / Jamie Garrison / Maria Ilyas / Paul Chipman / Kalle Kantola / Mandy E Janssen / John Spear / Duncan Sousa / Robert McKenna / Kevin Brown / Maria Söderlund- ...著者: Mario Mietzsch / Shweta Kailasan / Jamie Garrison / Maria Ilyas / Paul Chipman / Kalle Kantola / Mandy E Janssen / John Spear / Duncan Sousa / Robert McKenna / Kevin Brown / Maria Söderlund-Venermo / Timothy Baker / Mavis Agbandje-McKenna / 要旨: Bocaparvoviruses are emerging pathogens of the family. Human bocavirus 1 (HBoV1) causes severe respiratory infections and HBoV2 to HBoV4 cause gastrointestinal infections in young children. Recent ...Bocaparvoviruses are emerging pathogens of the family. Human bocavirus 1 (HBoV1) causes severe respiratory infections and HBoV2 to HBoV4 cause gastrointestinal infections in young children. Recent reports of life-threatening cases, lack of direct treatment or vaccination, and a limited understanding of their disease mechanisms highlight the need to study these pathogens on a molecular and structural level for the development of therapeutics. Toward this end, the capsid structures of HBoV1, HBoV3, and HBoV4 were determined to a resolution of 2.8 to 3.0 Å by cryo-electron microscopy and three-dimensional image reconstruction. The bocaparvovirus capsids, which display different tissue tropisms, have features in common with other parvoviruses, such as depressions at the icosahedral 2-fold symmetry axis and surrounding the 5-fold symmetry axis, protrusions surrounding the 3-fold symmetry axis, and a channel at the 5-fold symmetry axis. However, unlike other parvoviruses, densities extending the 5-fold channel into the capsid interior are conserved among the bocaparvoviruses and are suggestive of a genus-specific function. Additionally, their major viral protein 3 contains loops with variable regions at their apexes conferring capsid surface topologies different from those of other parvoviruses. Structural comparisons at the strain (HBoV) and genus (bovine parvovirus and HBoV) levels identified differences in surface loops that are functionally important in host/tissue tropism, pathogenicity, and antigenicity in other parvoviruses and likely play similar roles in these viruses. This study thus provides a structural framework to characterize determinants of host/tissue tropism, pathogenicity, and antigenicity for the development of antiviral strategies to control human bocavirus infections. Human bocaviruses are one of only a few members of the family pathogenic to humans, especially young children and immunocompromised adults. There are currently no treatments or vaccines for these viruses or the related enteric bocaviruses. This study obtained the first high-resolution structures of three human bocaparvoviruses determined by cryo-reconstruction. HBoV1 infects the respiratory tract, and HBoV3 and HBoV4 infect the gastrointestinal tract, tissues that are likely targeted by the capsid. Comparison of these viruses provides information on conserved bocaparvovirus-specific features and variable regions resulting in unique surface topologies that can serve as guides to characterize HBoV determinants of tissue tropism and antigenicity in future experiments. Based on the comparison to other existing parvovirus capsid structures, this study suggests capsid regions that likely control successful infection, including determinants of receptor attachment, host cell trafficking, and antigenic reactivity. Overall, these observations could impact efforts to design antiviral strategies and vaccines for HBoVs. | ||||||
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 | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 5urf.cif.gz | 5.1 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb5urf.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 5urf.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/ur/5urf ftp://data.pdbj.org/pub/pdb/validation_reports/ur/5urf | HTTPS FTP |
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-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 60568.301 Da / 分子数: 60 / 由来タイプ: 組換発現 / 由来: (組換発現) Human bocavirus 1 (ウイルス) 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: U5XGX2, UniProt: Q3YPH4*PLUS |
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-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 |
-試料調製
構成要素 | 名称: human bocavirus 1Bocaparvovirus / タイプ: VIRUS / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: Human bocavirus 1 (ウイルス) |
ウイルスについての詳細 | 中空か: YES / エンベロープを持つか: NO / 単離: SEROTYPE / タイプ: VIRUS-LIKE PARTICLE |
天然宿主 | 生物種: Homo sapiens |
緩衝液 | pH: 7.4 |
試料 | 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 |
-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 FIELDBright-field microscopy |
撮影 | 電子線照射量: 63 e/Å2 フィルム・検出器のモデル: DIRECT ELECTRON DE-20 (5k x 3k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.10-2155_2155: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 2.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 31064 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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