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基本情報
登録情報 | データベース: PDB / ID: 7pel | ||||||||||||||||||
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タイトル | CryoEM structure of simian T-cell lymphotropic virus intasome in complex with PP2A regulatory subunit B56 gamma | ||||||||||||||||||
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![]() | VIRAL PROTEIN / integrase / transferase / deltaretrovirus / PP2A / B56 / phosphatase / molecular mimicry / host factor / DNA-binding | ||||||||||||||||||
機能・相同性 | ![]() protein phosphatase type 2A complex / meiotic sister chromatid cohesion / protein phosphatase regulator activity / APC truncation mutants have impaired AXIN binding / AXIN missense mutants destabilize the destruction complex / Truncations of AMER1 destabilize the destruction complex / Beta-catenin phosphorylation cascade / Signaling by GSK3beta mutants / CTNNB1 S33 mutants aren't phosphorylated / CTNNB1 S37 mutants aren't phosphorylated ...protein phosphatase type 2A complex / meiotic sister chromatid cohesion / protein phosphatase regulator activity / APC truncation mutants have impaired AXIN binding / AXIN missense mutants destabilize the destruction complex / Truncations of AMER1 destabilize the destruction complex / Beta-catenin phosphorylation cascade / Signaling by GSK3beta mutants / CTNNB1 S33 mutants aren't phosphorylated / CTNNB1 S37 mutants aren't phosphorylated / CTNNB1 S45 mutants aren't phosphorylated / CTNNB1 T41 mutants aren't phosphorylated / Co-stimulation by CD28 / Disassembly of the destruction complex and recruitment of AXIN to the membrane / supercoiled DNA binding / Integration of viral DNA into host genomic DNA / Autointegration results in viral DNA circles / Co-inhibition by CTLA4 / Platelet sensitization by LDL / 2-LTR circle formation / Formation of WDR5-containing histone-modifying complexes / Vpr-mediated nuclear import of PICs / mRNA 5'-splice site recognition / Integration of provirus / APOBEC3G mediated resistance to HIV-1 infection / protein phosphatase activator activity / chromosome, centromeric region / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / heterochromatin / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / nuclear periphery / Resolution of Sister Chromatid Cohesion / DNA damage response, signal transduction by p53 class mediator / Degradation of beta-catenin by the destruction complex / RHO GTPases Activate Formins / RAF activation / euchromatin / DNA integration / Negative regulation of MAPK pathway / viral genome integration into host DNA / establishment of integrated proviral latency / RNA stem-loop binding / Separation of Sister Chromatids / RNA-directed DNA polymerase activity / Regulation of TP53 Degradation / RNA-DNA hybrid ribonuclease activity / response to heat / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / response to oxidative stress / DNA recombination / DNA-binding transcription factor binding / proteasome-mediated ubiquitin-dependent protein catabolic process / transcription coactivator activity / chromatin remodeling / negative regulation of cell population proliferation / chromatin binding / symbiont entry into host cell / Golgi apparatus / signal transduction / positive regulation of transcription by RNA polymerase II / DNA binding / RNA binding / zinc ion binding / nucleoplasm / nucleus / cytosol 類似検索 - 分子機能 | ||||||||||||||||||
生物種 | ![]() ![]() synthetic construct (人工物) | ||||||||||||||||||
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: 3.34 Å | ||||||||||||||||||
![]() | Barski, M. / Pye, V.E. / Nans, A. / Cherepanov, P. / Maertens, G.N. | ||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Cryo-EM structure of the deltaretroviral intasome in complex with the PP2A regulatory subunit B56γ. 著者: Michał S Barski / Jordan J Minnell / Zuzana Hodakova / Valerie E Pye / Andrea Nans / Peter Cherepanov / Goedele N Maertens / ![]() 要旨: Human T-cell lymphotropic virus type 1 (HTLV-1) is a deltaretrovirus and the most oncogenic pathogen. Many of the ~20 million HTLV-1 infected people will develop severe leukaemia or an ALS-like motor ...Human T-cell lymphotropic virus type 1 (HTLV-1) is a deltaretrovirus and the most oncogenic pathogen. Many of the ~20 million HTLV-1 infected people will develop severe leukaemia or an ALS-like motor disease, unless a therapy becomes available. A key step in the establishment of infection is the integration of viral genetic material into the host genome, catalysed by the retroviral integrase (IN) enzyme. Here, we use X-ray crystallography and single-particle cryo-electron microscopy to determine the structure of the functional deltaretroviral IN assembled on viral DNA ends and bound to the B56γ subunit of its human host factor, protein phosphatase 2 A. The structure reveals a tetrameric IN assembly bound to two molecules of the phosphatase via a conserved short linear motif. Insight into the deltaretroviral intasome and its interaction with the host will be crucial for understanding the pattern of integration events in infected individuals and therefore bears important clinical implications. | ||||||||||||||||||
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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-検証レポート
文書・要旨 | ![]() | 404.3 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 413.3 KB | 表示 | |
XML形式データ | ![]() | 31.6 KB | 表示 | |
CIF形式データ | ![]() | 49.2 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
#1: タンパク質 | 分子量: 33885.504 Da / 分子数: 4 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: pol / 発現宿主: ![]() ![]() #2: タンパク質 | 分子量: 80394.680 Da / 分子数: 2 / 由来タイプ: 組換発現 詳細: fusion construct containing human LEDGF (residues 1-324 thus without the IBD domain) (gene PSIP1; O75475)) and human B56gammma (residues 11-380) regulatory subunit of PP2A (gene PPP2R5C) (no ...詳細: fusion construct containing human LEDGF (residues 1-324 thus without the IBD domain) (gene PSIP1; O75475)) and human B56gammma (residues 11-380) regulatory subunit of PP2A (gene PPP2R5C) (no space for these details below),fusion construct containing human LEDGF (residues 1-324 thus without the IBD domain) (gene PSIP1; O75475)) and human B56gammma (residues 11-380) regulatory subunit of PP2A (gene PPP2R5C) (no space for these details below),fusion construct containing human LEDGF (residues 1-324 thus without the IBD domain) (gene PSIP1; O75475)) and human B56gammma (residues 11-380) regulatory subunit of PP2A (gene PPP2R5C) (no space for these details below),fusion construct containing human LEDGF (residues 1-324 thus without the IBD domain) (gene PSIP1; O75475)) and human B56gammma (residues 11-380) regulatory subunit of PP2A (gene PPP2R5C) (no space for these details below) 由来: (組換発現) ![]() ![]() ![]() #3: DNA鎖 | 分子量: 9221.909 Da / 分子数: 2 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) #4: DNA鎖 | 分子量: 8593.560 Da / 分子数: 2 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) #5: 化合物 | ChemComp-ZN / 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 |
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分子量 | 値: 0.3311 MDa / 実験値: NO | |||||||||||||||||||||||||||||||||||
由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 6 | |||||||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.76 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: Complex has been purified by SEC chromatography | |||||||||||||||||||||||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 200 divisions/in. / グリッドのタイプ: C-flat-1.2/1.3 | |||||||||||||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 295.15 K |
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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 |
撮影 | 電子線照射量: 50.4 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.18_3845: / 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: 4356108 詳細: 2,198,454 (OH dataset) and 2,157,654 (GO dataset) 3D reconstructions using either separate subsets resulted in highly anisotropic maps due to severe preferential orientations. Because 3D-FCS ...詳細: 2,198,454 (OH dataset) and 2,157,654 (GO dataset) 3D reconstructions using either separate subsets resulted in highly anisotropic maps due to severe preferential orientations. Because 3D-FCS analysis indicated favourable complementarity of the data, the datasets were merged as separate optic groups in Relion-3.1. 3D reconstruction, including Bayesian particle polishing, CTF and beam tilt refinement, as implemented in Relion-3.1, resulted in the final map with minimal anisotropy; 3D-FSC sphericity index of the final map was 0.967. | ||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C2 (2回回転対称) | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.34 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 161921 詳細: 3D reconstruction, including Bayesian particle polishing, CTF and beam tilt refinement, as implemented in Relion-3.1, resulted in the final map with minimal anisotropy; 3D-FSC sphericity ...詳細: 3D reconstruction, including Bayesian particle polishing, CTF and beam tilt refinement, as implemented in Relion-3.1, resulted in the final map with minimal anisotropy; 3D-FSC sphericity index of the final map was 0.967. 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 31.31 / 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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