+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7eei | ||||||
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タイトル | Structure of Rift Valley fever virus RNA-dependent RNA polymerase | ||||||
要素 | Replicase | ||||||
キーワード | VIRAL PROTEIN / Polymerase / Complex / Replicate | ||||||
機能・相同性 | 機能・相同性情報 nucleoside binding / host cell endoplasmic reticulum / virion component / host cell endoplasmic reticulum-Golgi intermediate compartment / host cell Golgi apparatus / 加水分解酵素; エステル加水分解酵素 / hydrolase activity / RNA-directed RNA polymerase / viral RNA genome replication / RNA-dependent RNA polymerase activity ...nucleoside binding / host cell endoplasmic reticulum / virion component / host cell endoplasmic reticulum-Golgi intermediate compartment / host cell Golgi apparatus / 加水分解酵素; エステル加水分解酵素 / hydrolase activity / RNA-directed RNA polymerase / viral RNA genome replication / RNA-dependent RNA polymerase activity / DNA-templated transcription / metal ion binding 類似検索 - 分子機能 | ||||||
生物種 | Rift valley fever virus (リフトバレー熱ウイルス) | ||||||
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: 3.6 Å | ||||||
データ登録者 | Wang, X. / Hu, C.X. | ||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: J Virol / 年: 2022 タイトル: Structure of Rift Valley Fever Virus RNA-Dependent RNA Polymerase. 著者: Xue Wang / Cuixia Hu / Wei Ye / Jia Wang / Xiaofei Dong / Jie Xu / Xiaorong Li / Manfeng Zhang / Hongyun Lu / Fanglin Zhang / Wei Wu / Shaodong Dai / Hong-Wei Wang / Zhongzhou Chen / 要旨: Rift Valley fever virus (RVFV) belongs to the order and is the type species of genus , which accounts for over 50% of family species. RVFV is mosquito-borne and causes severe diseases in both ...Rift Valley fever virus (RVFV) belongs to the order and is the type species of genus , which accounts for over 50% of family species. RVFV is mosquito-borne and causes severe diseases in both humans and livestock, and consists of three segments (S, M, L) in the genome. The L segment encodes an RNA-dependent RNA polymerase (RdRp, L protein) that is responsible for facilitating the replication and transcription of the virus. It is essential for the virus and has multiple drug targets. Here, we established an expression system and purification procedures for full-length L protein, which is composed of an endonuclease domain, RdRp domain, and cap-binding domain. A cryo-EM L protein structure was reported at 3.6 Å resolution. In this first L protein structure of genus , the priming loop of RVFV L protein is distinctly different from those of other L proteins and undergoes large movements related to its replication role. Structural and biochemical analyses indicate that a single template can induce initiation of RNA synthesis, which is notably enhanced by 5' viral RNA. These findings help advance our understanding of the mechanism of RNA synthesis and provide an important basis for developing antiviral inhibitors. The zoonosis RVF virus (RVFV) is one of the most serious arbovirus threats to both human and animal health. RNA-dependent RNA polymerase (RdRp) is a multifunctional enzyme catalyzing genome replication as well as viral transcription, so the RdRp is essential for studying the virus and has multiple drug targets. In our study, we report the structure of RVFV L protein at 3.6 Å resolution by cryo-EM. This is the first L protein structure of genus . Strikingly, a single template can initiate RNA replication. The structure and assays provide a comprehensive and in-depth understanding of the catalytic and substrate recognition mechanism of RdRp. | ||||||
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 | 7eei.cif.gz | 255.4 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7eei.ent.gz | 185.5 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7eei.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
文書・要旨 | 7eei_validation.pdf.gz | 789 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7eei_full_validation.pdf.gz | 796.3 KB | 表示 | |
XML形式データ | 7eei_validation.xml.gz | 39.4 KB | 表示 | |
CIF形式データ | 7eei_validation.cif.gz | 62.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ee/7eei ftp://data.pdbj.org/pub/pdb/validation_reports/ee/7eei | HTTPS FTP |
-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: 202260.734 Da / 分子数: 1 / 変異: K322S / 由来タイプ: 組換発現 由来: (組換発現) Rift valley fever virus (リフトバレー熱ウイルス) 発現宿主: Pichia aff. alni PL5W1 (菌類) / 参照: UniProt: A2SZS3, RNA-directed RNA polymerase |
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Has protein modification | Y |
-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: 3D ARRAY / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 | 名称: Structural insights into Rift Valley fever virus replication machinery タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 値: 0.238 MDa / 実験値: YES |
由来(天然) | 生物種: Rift Valley fever virus (リフトバレー熱ウイルス) |
由来(組換発現) | 生物種: Pichia aff. alni PL5W1 (菌類) |
緩衝液 | pH: 8.5 |
試料 | 濃度: 0.5 mg/ml / 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 FIELD |
撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.18.2_3874: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 554102 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 最高解像度: 3.6 Å | ||||||||||||||||||||||||
拘束条件 |
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