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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 9jjh | |||||||||||||||
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タイトル | Cryo-EM structure of a T=1 VLP of RHDV GI.2 with N-terminal 1-37 residues truncated | |||||||||||||||
![]() | Capsid protein | |||||||||||||||
![]() | VIRUS LIKE PARTICLE / Calicivirus / viral assembly / rabbit hemorrhagic disease virus (RHDV) / major capsid protein / virus-like particle / VIRUS | |||||||||||||||
機能・相同性 | Calicivirus coat protein / Calicivirus coat protein / virion component / Picornavirus/Calicivirus coat protein / Viral coat protein subunit / host cell cytoplasm / Capsid protein![]() | |||||||||||||||
生物種 | ![]() | |||||||||||||||
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: 2.4 Å | |||||||||||||||
![]() | Ruan, Z. / Shao, Q. / Song, Y. / Hu, B. / Fan, Z. / Wei, H. / Liu, Y. / Wang, F. / Fang, Q. | |||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Near-atomic structures of RHDV reveal insights into capsid assembly and different conformations between mature virion and VLP. 著者: Zhiyang Ruan / Qianqian Shao / Yanhua Song / Bo Hu / Zhiyu Fan / Houjun Wei / Yunshu Liu / Fang Wang / Qianglin Fang / ![]() 要旨: Rabbit hemorrhagic disease virus (RHDV) poses a significant threat to rabbits, causing substantial economic losses in rabbit farming. The virus also endangers wild populations of rabbit species and ...Rabbit hemorrhagic disease virus (RHDV) poses a significant threat to rabbits, causing substantial economic losses in rabbit farming. The virus also endangers wild populations of rabbit species and the predatory animals that rely on rabbits as a food source, thereby disturbing the ecological balance. However, the structural understanding of RHDV has been limited due to the lack of high-resolution structures. Here, we present the first high-resolution cryo-EM structures of the mature virion and virus-like particles (VLPs) derived from both full-length and N-terminal arm (NTA)-truncated VP60. These structures reveal intricate structural details of the icosahedral capsid and crucial NTA-mediated interactions essential for capsid assembly. In addition, dramatic conformational differences are unexpectedly observed between the mature virion and VLP. The protruding spikes of the A-B dimers adopt a "raised" state in the mature virion and a "resting" state in the VLP. These findings enhance our understanding of the structure, assembly, and conformational dynamics of the RHDV capsid, laying the essential groundwork for further virological research and therapeutic advancements.IMPORTANCERHDV is a pathogen with significant economic and ecological impact. By presenting the first high-resolution cryo-EM structures of RHDV, we have uncovered detailed interactions among neighboring VP60 subunits of the icosahedral capsid. The NTA of VP60 is uniquely clustered around the threefold axis of the capsid, probably play a critical role in dragging the six VP60 dimers around the threefold axis during capsid assembly. Additionally, we observed dramatic conformational differences between the mature virion and VLPs. VLPs are commonly used for vaccine development, under the assumption that their structure closely resembles that of the mature virion. Our findings significantly advance the understanding of the RHDV capsid structure, which may be used for developing potential therapeutic strategies against RHDV. | |||||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 52.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 31.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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リンク
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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: 56900.066 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 株: GI.2 / 細胞株 (発現宿主): Sf9 発現宿主: ![]() ![]() 参照: UniProt: A0A3S8Q1D6 |
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Has protein modification | N |
-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 |
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試料調製
構成要素 | 名称: Rabbit hemorrhagic disease virus 2 / タイプ: VIRUS / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() 細胞: sf9 |
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: STRAIN / タイプ: VIRION |
ウイルス殻 | 直径: 290 nm / 三角数 (T数): 1 |
緩衝液 | pH: 7.2 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのタイプ: Quantifoil R2/1 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE |
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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: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 59000 X / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 5.09 sec. / 電子線照射量: 26.09 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 実像数: 112 |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 36676 | ||||||||||||||||||||||||||||
対称性 | 点対称性: I (正20面体型対称) | ||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 22101 / 対称性のタイプ: POINT |