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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: 8g7t | |||||||||
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タイトル | Cryo-EM structure of Riplet:RIG-I:dsRNA complex (end-end) | |||||||||
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![]() | Transferase/Hydrolase/RNA / ribonucleoprotein complex / RNA sensor / RIG-I like receptor / Ubiquitination / E3 ligase / TRIM family / ANTIVIRAL PROTEIN / Transferase-Hydrolase-RNA complex | |||||||||
機能・相同性 | ![]() RIG-I binding / free ubiquitin chain polymerization / regulation of type III interferon production / RIG-I signaling pathway / positive regulation of myeloid dendritic cell cytokine production / OAS antiviral response / detection of virus / NF-kB activation through FADD/RIP-1 pathway mediated by caspase-8 and -10 / positive regulation of response to cytokine stimulus / positive regulation of granulocyte macrophage colony-stimulating factor production ...RIG-I binding / free ubiquitin chain polymerization / regulation of type III interferon production / RIG-I signaling pathway / positive regulation of myeloid dendritic cell cytokine production / OAS antiviral response / detection of virus / NF-kB activation through FADD/RIP-1 pathway mediated by caspase-8 and -10 / positive regulation of response to cytokine stimulus / positive regulation of granulocyte macrophage colony-stimulating factor production / pattern recognition receptor activity / TRAF6 mediated IRF7 activation / cytoplasmic pattern recognition receptor signaling pathway / RSV-host interactions / regulation of innate immune response / response to exogenous dsRNA / cellular response to exogenous dsRNA / TRAF6 mediated NF-kB activation / protein K63-linked ubiquitination / antiviral innate immune response / bicellular tight junction / positive regulation of interferon-alpha production / ribonucleoprotein complex binding / regulation of cell migration / positive regulation of defense response to virus by host / positive regulation of interferon-beta production / positive regulation of interleukin-8 production / Negative regulators of DDX58/IFIH1 signaling / response to virus / DDX58/IFIH1-mediated induction of interferon-alpha/beta / RING-type E3 ubiquitin transferase / protein homooligomerization / Evasion by RSV of host interferon responses / ISG15 antiviral mechanism / ruffle membrane / cytoplasmic stress granule / protein polyubiquitination / ubiquitin-protein transferase activity / positive regulation of interleukin-6 production / SARS-CoV-1 activates/modulates innate immune responses / positive regulation of tumor necrosis factor production / ubiquitin protein ligase activity / double-stranded RNA binding / Ovarian tumor domain proteases / actin cytoskeleton / TRAF3-dependent IRF activation pathway / gene expression / double-stranded DNA binding / defense response to virus / RNA helicase activity / single-stranded RNA binding / Ub-specific processing proteases / protein ubiquitination / RNA helicase / ribonucleoprotein complex / innate immune response / ubiquitin protein ligase binding / positive regulation of gene expression / GTP binding / SARS-CoV-2 activates/modulates innate and adaptive immune responses / ATP hydrolysis activity / positive regulation of transcription by RNA polymerase II / zinc ion binding / ATP binding / identical protein binding / metal ion binding / cytoplasm / cytosol 類似検索 - 分子機能 | |||||||||
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: 3.2 Å | |||||||||
![]() | Wang, W. / Pyle, A.M. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: The E3 ligase Riplet promotes RIG-I signaling independent of RIG-I oligomerization. 著者: Wenshuai Wang / Benjamin Götte / Rong Guo / Anna Marie Pyle / ![]() 要旨: RIG-I is an essential innate immune receptor that responds to infection by RNA viruses. The RIG-I signaling cascade is mediated by a series of post-translational modifications, the most important of ...RIG-I is an essential innate immune receptor that responds to infection by RNA viruses. The RIG-I signaling cascade is mediated by a series of post-translational modifications, the most important of which is ubiquitination of the RIG-I Caspase Recruitment Domains (CARDs) by E3 ligase Riplet. This is required for interaction between RIG-I and its downstream adapter protein MAVS, but the mechanism of action remains unclear. Here we show that Riplet is required for RIG-I signaling in the presence of both short and long dsRNAs, establishing that Riplet activation does not depend upon RIG-I filament formation on long dsRNAs. Likewise, quantitative Riplet-RIG-I affinity measurements establish that Riplet interacts with RIG-I regardless of whether the receptor is bound to RNA. To understand this, we solved high-resolution cryo-EM structures of RIG-I/RNA/Riplet complexes, revealing molecular interfaces that control Riplet-mediated activation and enabling the formulation of a unified model for the role of Riplet in signaling. | |||||||||
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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 | ![]() | 342.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 259.2 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.3 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.3 MB | 表示 | |
XML形式データ | ![]() | 55.7 KB | 表示 | |
CIF形式データ | ![]() | 84.7 KB | 表示 | |
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 | ![]() 29823MC ![]() 8g7uC ![]() 8g7vC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 106740.555 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: タンパク質 | 分子量: 47946.305 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #3: RNA鎖 | | 分子量: 7885.581 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() #4: RNA鎖 | | 分子量: 7788.551 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() #5: 化合物 | 研究の焦点であるリガンドがあるか | Y | |
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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 |
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試料調製
構成要素 | 名称: Complex of RNP end / タイプ: COMPLEX / Entity ID: #1-#4 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
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 |
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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 / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.17.1_3660: / 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: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 204993 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
原子モデル構築 | B value: 76 / 空間: REAL | ||||||||||||||||||||||||
原子モデル構築 |
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拘束条件 |
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