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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: 7opl | ||||||
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タイトル | CryoEM structure of DNA Polymerase alpha - primase bound to SARS CoV nsp1 | ||||||
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![]() | DNA BINDING PROTEIN / DNA polymerase / Primase / viral protein | ||||||
機能・相同性 | ![]() DNA primase AEP / ribonucleotide binding / DNA replication initiation / Telomere C-strand synthesis initiation / DNA/RNA hybrid binding / Inhibition of replication initiation of damaged DNA by RB1/E2F1 / regulation of type I interferon production / alpha DNA polymerase:primase complex / Assembly of the SARS-CoV-1 Replication-Transcription Complex (RTC) / Maturation of replicase proteins ...DNA primase AEP / ribonucleotide binding / DNA replication initiation / Telomere C-strand synthesis initiation / DNA/RNA hybrid binding / Inhibition of replication initiation of damaged DNA by RB1/E2F1 / regulation of type I interferon production / alpha DNA polymerase:primase complex / Assembly of the SARS-CoV-1 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / Transcription of SARS-CoV-1 sgRNAs / Polymerase switching / Processive synthesis on the lagging strand / lagging strand elongation / Removal of the Flap Intermediate / Polymerase switching on the C-strand of the telomere / Translation of Replicase and Assembly of the Replication Transcription Complex / mitotic DNA replication initiation / DNA replication, synthesis of primer / Replication of the SARS-CoV-1 genome / K48-linked deubiquitinase activity / host cell endoplasmic reticulum / K63-linked deubiquitinase activity / DNA strand elongation involved in DNA replication / DNA synthesis involved in DNA repair / leading strand elongation / G1/S-Specific Transcription / SARS-CoV-1 modulates host translation machinery / DNA replication origin binding / Activation of the pre-replicative complex / DNA replication initiation / viral genome replication / Defective pyroptosis / methyltransferase activity / double-strand break repair via nonhomologous end joining / SARS-CoV-1 activates/modulates innate immune responses / nuclear matrix / protein import into nucleus / DNA-directed RNA polymerase activity / nuclear envelope / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / double membrane vesicle viral factory outer membrane / SARS coronavirus main proteinase / host cell endosome / symbiont-mediated degradation of host mRNA / mRNA guanylyltransferase / symbiont-mediated suppression of host ISG15-protein conjugation / endonuclease activity / G-quadruplex RNA binding / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / omega peptidase activity / methylation / host cell Golgi apparatus / symbiont-mediated perturbation of host ubiquitin-like protein modification / DNA-directed DNA polymerase / ubiquitinyl hydrolase 1 / cysteine-type deubiquitinase activity / DNA-directed DNA polymerase activity / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; システインプロテアーゼ / DNA replication / single-stranded RNA binding / host cell perinuclear region of cytoplasm / regulation of autophagy / viral protein processing / lyase activity / ciliary basal body / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / symbiont-mediated suppression of host gene expression / viral translational frameshifting / symbiont-mediated activation of host autophagy / cysteine-type endopeptidase activity / DNA repair / nucleotide binding / RNA-directed RNA polymerase activity / intracellular membrane-bounded organelle / chromatin binding / protein kinase binding / chromatin / nucleolus / magnesium ion binding / proteolysis / DNA binding / zinc ion binding / nucleoplasm / metal ion binding / identical protein binding / nucleus / membrane / 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: 4.12 Å | ||||||
![]() | Kilkenny, M.L. / Pellegrini, L. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for the interaction of SARS-CoV-2 virulence factor nsp1 with DNA polymerase α-primase. 著者: Mairi L Kilkenny / Charlotte E Veale / Amir Guppy / Steven W Hardwick / Dimitri Y Chirgadze / Neil J Rzechorzek / Joseph D Maman / Luca Pellegrini / ![]() 要旨: The molecular mechanisms that drive the infection by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-the causative agent of coronavirus disease 2019 (COVID-19)-are under intense ...The molecular mechanisms that drive the infection by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-the causative agent of coronavirus disease 2019 (COVID-19)-are under intense current scrutiny to understand how the virus operates and to uncover ways in which the disease can be prevented or alleviated. Recent proteomic screens of the interactions between viral and host proteins have identified the human proteins targeted by SARS-CoV-2. The DNA polymerase α (Pol α)-primase complex or primosome-responsible for initiating DNA synthesis during genomic duplication-was identified as a target of nonstructural protein 1 (nsp1), a major virulence factor in the SARS-CoV-2 infection. Here, we validate the published reports of the interaction of nsp1 with the primosome by demonstrating direct binding with purified recombinant components and providing a biochemical characterization of their interaction. Furthermore, we provide a structural basis for the interaction by elucidating the cryo-electron microscopy structure of nsp1 bound to the primosome. Our findings provide biochemical evidence for the reported targeting of Pol α by the virulence factor nsp1 and suggest that SARS-CoV-2 interferes with Pol α's putative role in the immune response during the viral infection. | ||||||
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構造の表示
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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 | ![]() | 458.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 359 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 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 72.3 KB | 表示 | |
CIF形式データ | ![]() | 110.2 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-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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要素
-DNA polymerase alpha ... , 2種, 2分子 AB
#1: タンパク質 | 分子量: 133702.562 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P09884, DNA-directed DNA polymerase |
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#2: タンパク質 | 分子量: 49855.434 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q14181 |
-タンパク質 , 3種, 3分子 CDE
#3: タンパク質 | 分子量: 52590.801 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P49642, 転移酵素; リンを含む基を移すもの; 核酸を移すもの |
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#4: タンパク質 | 分子量: 58890.918 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P49643 |
#5: タンパク質 | 分子量: 12955.852 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: 1a / 発現宿主: ![]() ![]() |
-非ポリマー , 2種, 4分子 


#6: 化合物 | #7: 化合物 | ChemComp-SF4 / | |
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-詳細
研究の焦点であるリガンドがあるか | N |
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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 DNA polymerase alpha - primase bound to SARS COV-2 nsp1 タイプ: COMPLEX / Entity ID: #1-#5 / 由来: RECOMBINANT | ||||||||||||||||
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分子量 | 値: 0.31 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: 7.2 | ||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: The nsp1 protein was added in 10-fold stoichiometric excess | ||||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 | ||||||||||||||||
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): 130000 X / 最大 デフォーカス(公称値): -0.7 nm / 最小 デフォーカス(公称値): -2.5 nm / C2レンズ絞り径: 50 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: 1.31 sec. / 電子線照射量: 46.91 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 実像数: 2919 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.19.1_4122: / 分類: 精密化 | ||||||||||||||||||||||||||||||||||||||||
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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: 709068 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.12 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 233476 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1 / Source name: PDB / タイプ: experimental model
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拘束条件 |
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