+
データを開く
-
基本情報
登録情報 | データベース: PDB / ID: 9ip3 | ||||||
---|---|---|---|---|---|---|---|
タイトル | Cryo-EM structure of the RNA-dependent RNA polymerase complex in a compact conformation from Ebola virus | ||||||
![]() |
| ||||||
![]() | VIRAL PROTEIN / RNA-dependent RNA polymerase complex | ||||||
機能・相同性 | ![]() RNA polymerase activity / negative stranded viral RNA transcription / symbiont-mediated suppression of host defenses / symbiont-mediated suppression of host RNAi-mediated antiviral immune response / negative regulation of miRNA-mediated gene silencing / NNS virus cap methyltransferase / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IKBKE activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF7 activity / GDP polyribonucleotidyltransferase / symbiont-mediated suppression of host antigen processing and presentation of peptide antigen via MHC class II ...RNA polymerase activity / negative stranded viral RNA transcription / symbiont-mediated suppression of host defenses / symbiont-mediated suppression of host RNAi-mediated antiviral immune response / negative regulation of miRNA-mediated gene silencing / NNS virus cap methyltransferase / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IKBKE activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF7 activity / GDP polyribonucleotidyltransferase / symbiont-mediated suppression of host antigen processing and presentation of peptide antigen via MHC class II / positive regulation of protein sumoylation / negative stranded viral RNA replication / detection of maltose stimulus / maltose transport complex / carbohydrate transport / viral transcription / molecular sequestering activity / 加水分解酵素; 酸無水物に作用; リン含有酸無水物に作用 / carbohydrate transmembrane transporter activity / maltose binding / maltose transport / maltodextrin transmembrane transport / ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing / ATP-binding cassette (ABC) transporter complex / viral genome replication / cell chemotaxis / virion component / outer membrane-bounded periplasmic space / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / viral nucleocapsid / symbiont-mediated suppression of host toll-like receptor signaling pathway / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / host cell cytoplasm / periplasmic space / symbiont-mediated suppression of host innate immune response / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / negative regulation of gene expression / RNA-directed RNA polymerase / RNA-directed RNA polymerase activity / GTPase activity / DNA damage response / RNA binding / ATP binding / membrane 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() Ebola virus - Eckron (Zaire 1976) | ||||||
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: 3.1 Å | ||||||
![]() | Li, G. / Du, T. / Wang, J. / Wu, S. / Ru, H. | ||||||
資金援助 | ![]()
| ||||||
![]() | ![]() タイトル: Structural insights into the RNA-dependent RNA polymerase complexes from highly pathogenic Marburg and Ebola viruses. 著者: Guobao Li / Tianjiao Du / Jiening Wang / Kaiyue Jie / Zhuolu Ren / Xiaokang Zhang / Long Zhang / Shan Wu / Heng Ru / ![]() 要旨: The Ebola and the Marburg viruses belong to the Filoviridae family, a group of filamentous, single-stranded, negative-sensed RNA viruses. Upon infection, uncontrolled propagation of the Ebola and the ...The Ebola and the Marburg viruses belong to the Filoviridae family, a group of filamentous, single-stranded, negative-sensed RNA viruses. Upon infection, uncontrolled propagation of the Ebola and the Marburg viruses causes severe hemorrhagic fevers with high mortality rates. The replication and transcription of viral genomes are mediated by a polymerase complex consisting of two proteins: L and its cofactor VP35. However, the molecular mechanism of filovirus RNA synthesis remains understudied due to the lack of high-resolution structures of L and VP35 complexes from these viruses. Here, we present the cryo-EM structures of the polymerase complexes for the Marburg virus and the Ebola virus at 2.7 Å and 3.1 Å resolutions respectively. Despite the similar assembly and overall structures between these two viruses, we identify virus-specific L-VP35 interactions. Our data show that intergeneric exchange of VP35 would diminish these interactions and prevent the formation of a functional chimeric polymerase complex between L protein and heterologous VP35. Additionally, we identify a contracted conformation of the Ebola virus polymerase structure, revealing the structural dynamics of the polymerase during RNA synthesis. These insights enhance our understanding of filovirus RNA synthesis mechanisms and may facilitate the development of antiviral drugs targeting filovirus polymerase. | ||||||
履歴 |
|
-
構造の表示
構造ビューア | 分子: ![]() ![]() |
---|
-
ダウンロードとリンク
-
ダウンロード
PDBx/mmCIF形式 | ![]() | 396.8 KB | 表示 | ![]() |
---|---|---|---|---|
PDB形式 | ![]() | 285.8 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 |
---|
-関連構造データ
関連構造データ | ![]() 60756MC ![]() 9ip2C ![]() 9ip4C C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
---|---|
類似構造データ | 類似検索 - 機能・相同性 ![]() |
-
リンク
-
集合体
登録構造単位 | ![]()
|
---|---|
1 |
|
-
要素
#1: タンパク質 | 分子量: 207335.219 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Sequence reference for Ebola virus - Eckron (Zaire, 1976) (12900) is not available in UniProt at the time of biocuration. Current sequence reference is from UniProt ID Q05318. 由来: (組換発現) ![]() ![]() ![]() 遺伝子: malE, b4034, JW3994 発現宿主: ![]() ![]() 参照: UniProt: P0AEX9, UniProt: Q05318, RNA-directed RNA polymerase, 加水分解酵素; 酸無水物に作用; リン含有酸無水物に作用, GDP polyribonucleotidyltransferase, NNS virus cap methyltransferase | ||||||
---|---|---|---|---|---|---|---|
#2: タンパク質 | 分子量: 72190.336 Da / 分子数: 4 / 由来タイプ: 組換発現 詳細: Sequence reference for Ebola virus - Eckron (Zaire, 1976) (12900) is not available in UniProt at the time of biocuration. Current sequence reference is from UniProt ID Q05127. 由来: (組換発現) ![]() ![]() ![]() 遺伝子: malE, b4034, JW3994, VP35 発現宿主: ![]() ![]() 参照: UniProt: P0AEX9, UniProt: Q05127 #3: 化合物 | ChemComp-ZN / | 研究の焦点であるリガンドがあるか | Y | Has protein modification | Y | |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
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: Ternary complex of L-VP35 core region from Ebola virus タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
---|---|
分子量 | 値: 0.5 MDa / 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 / 詳細: 25 mM HEPES, 300 mM NaCl, 1 mM TCEP, 6 mM MgCl2 |
試料 | 濃度: 1.2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: This sample is monodisperse. |
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 |
---|---|
顕微鏡 | モデル: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1500 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
-
解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
3次元再構成 | 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 77587 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
精密化 | 解像度: 3.1→238.08 Å / SU ML: 0.31 / σ(F): 0.72 / 位相誤差: 31.36 / 立体化学のターゲット値: ML
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
溶媒の処理 | 減衰半径: 0.9 Å / VDWプローブ半径: 1.11 Å / 溶媒モデル: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
LS精密化 シェル |
|