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基本情報
登録情報 | データベース: PDB / ID: 8dp0 | |||||||||||||||||||||
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タイトル | Structure of p110 gamma bound to the Ras inhibitory nanobody NB7 | |||||||||||||||||||||
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![]() | TRANSFERASE/IMMUNE SYSTEM / PI3K / p110 / PIK3CG / phosphoinositide 3-kinase / PIP3 / TRANSFERASE-IMMUNE SYSTEM complex | |||||||||||||||||||||
機能・相同性 | ![]() negative regulation of cardiac muscle contraction / negative regulation of triglyceride catabolic process / secretory granule localization / natural killer cell chemotaxis / neutrophil extravasation / phosphatidylinositol-4-phosphate 3-kinase / positive regulation of acute inflammatory response / respiratory burst involved in defense response / T cell chemotaxis / negative regulation of fibroblast apoptotic process ...negative regulation of cardiac muscle contraction / negative regulation of triglyceride catabolic process / secretory granule localization / natural killer cell chemotaxis / neutrophil extravasation / phosphatidylinositol-4-phosphate 3-kinase / positive regulation of acute inflammatory response / respiratory burst involved in defense response / T cell chemotaxis / negative regulation of fibroblast apoptotic process / phosphatidylinositol 3-kinase complex, class IB / regulation of calcium ion transmembrane transport / 1-phosphatidylinositol-4-phosphate 3-kinase activity / Co-stimulation by ICOS / sphingosine-1-phosphate receptor signaling pathway / phosphatidylinositol 3-kinase complex, class IA / phosphatidylinositol-3-phosphate biosynthetic process / 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity / phosphatidylinositol-4,5-bisphosphate 3-kinase / dendritic cell chemotaxis / phosphatidylinositol 3-kinase / 1-phosphatidylinositol-3-kinase activity / Erythropoietin activates Phosphoinositide-3-kinase (PI3K) / mast cell degranulation / phosphatidylinositol-mediated signaling / hepatocyte apoptotic process / regulation of cell adhesion mediated by integrin / phosphatidylinositol phosphate biosynthetic process / Synthesis of PIPs at the plasma membrane / positive regulation of MAP kinase activity / positive regulation of Rac protein signal transduction / CD28 dependent PI3K/Akt signaling / regulation of angiogenesis / T cell proliferation / GPVI-mediated activation cascade / ephrin receptor binding / neutrophil chemotaxis / positive regulation of endothelial cell migration / T cell activation / cellular response to cAMP / positive regulation of cytokine production / phosphatidylinositol 3-kinase/protein kinase B signal transduction / platelet aggregation / endocytosis / Constitutive Signaling by Aberrant PI3K in Cancer / G beta:gamma signalling through PI3Kgamma / cell migration / PIP3 activates AKT signaling / positive regulation of cytosolic calcium ion concentration / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / angiogenesis / phospholipase C-activating G protein-coupled receptor signaling pathway / adaptive immune response / non-specific serine/threonine protein kinase / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / protein kinase activity / immune response / G protein-coupled receptor signaling pathway / inflammatory response / innate immune response / protein serine kinase activity / protein serine/threonine kinase activity / ATP binding / identical protein binding / membrane / plasma membrane / 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: 2.96 Å | |||||||||||||||||||||
![]() | Burke, J.E. / Nam, S.E. / Rathinaswamy, M.K. / Yip, C.K. | |||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Allosteric activation or inhibition of PI3Kγ mediated through conformational changes in the p110γ helical domain. 著者: Noah J Harris / Meredith L Jenkins / Sung-Eun Nam / Manoj K Rathinaswamy / Matthew A H Parson / Harish Ranga-Prasad / Udit Dalwadi / Brandon E Moeller / Eleanor Sheeky / Scott D Hansen / ...著者: Noah J Harris / Meredith L Jenkins / Sung-Eun Nam / Manoj K Rathinaswamy / Matthew A H Parson / Harish Ranga-Prasad / Udit Dalwadi / Brandon E Moeller / Eleanor Sheeky / Scott D Hansen / Calvin K Yip / John E Burke / ![]() ![]() 要旨: PI3Kγ is a critical immune signaling enzyme activated downstream of diverse cell surface molecules, including Ras, PKCβ activated by the IgE receptor, and Gβγ subunits released from activated ...PI3Kγ is a critical immune signaling enzyme activated downstream of diverse cell surface molecules, including Ras, PKCβ activated by the IgE receptor, and Gβγ subunits released from activated GPCRs. PI3Kγ can form two distinct complexes, with the p110γ catalytic subunit binding to either a p101 or p84 regulatory subunit, with these complexes being differentially activated by upstream stimuli. Here, using a combination of cryo electron microscopy, HDX-MS, and biochemical assays, we have identified novel roles of the helical domain of p110γ in regulating lipid kinase activity of distinct PI3Kγ complexes. We defined the molecular basis for how an allosteric inhibitory nanobody potently inhibits kinase activity through rigidifying the helical domain and regulatory motif of the kinase domain. The nanobody did not block either p110γ membrane recruitment or Ras/Gβγ binding, but instead decreased ATP turnover. We also identified that p110γ can be activated by dual PKCβ helical domain phosphorylation leading to partial unfolding of an N-terminal region of the helical domain. PKCβ phosphorylation is selective for p110γ-p84 compared to p110γ-p101, driven by differential dynamics of the helical domain of these different complexes. Nanobody binding prevented PKCβ-mediated phosphorylation. Overall, this work shows an unexpected allosteric regulatory role of the helical domain of p110γ that is distinct between p110γ-p84 and p110γ-p101 and reveals how this can be modulated by either phosphorylation or allosteric inhibitory binding partners. This opens possibilities of future allosteric inhibitor development for therapeutic intervention. | |||||||||||||||||||||
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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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PDBx/mmCIF形式 | ![]() | 208.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 162.3 KB | 表示 | ![]() |
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その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 836 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 845.5 KB | 表示 | |
XML形式データ | ![]() | 34.9 KB | 表示 | |
CIF形式データ | ![]() | 52.3 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 | ![]() 27627MC 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: 126627.406 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: P48736, phosphatidylinositol 3-kinase, phosphatidylinositol-4,5-bisphosphate 3-kinase, phosphatidylinositol-4-phosphate 3-kinase, non-specific serine/threonine protein kinase |
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#2: 抗体 | 分子量: 14574.995 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
Has protein modification | N |
-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 p110 gamma with NB7 / タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES | |||||||||||||||||||||||||
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分子量 | 値: 0.126454 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: 8.5 詳細: Freshly prepared gel filtration buffer, filtered through 0.22 um filter and degassed | |||||||||||||||||||||||||
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試料 | 濃度: 0.45 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Specimen was p110 gamma purified with stabilizing nanobody, NB7, to homogeneity by gel filtration. | |||||||||||||||||||||||||
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: C-flat-2/2 | |||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K 詳細: 3 uL of specimen was loaded onto grid and immediately blotted for 1.5 seconds with -5 force before plunging into liquid 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): 500 nm |
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 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 7344 |
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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 | ||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.96 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 149603 / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 7MEZ PDB chain-ID: A / Accession code: 7MEZ / Pdb chain residue range: 1-1102 / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||||||||||
拘束条件 |
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