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基本情報
登録情報 | データベース: PDB / ID: 7mez | ||||||||||||||||||||||||||||||||||||
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タイトル | Structure of the phosphoinositide 3-kinase p110 gamma (PIK3CG) p101 (PIK3R5) complex | ||||||||||||||||||||||||||||||||||||
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![]() | TRANSFERASE / PI3K / p110 / PIK3CG / PIK3R5 / p101 / phosphoinositide 3-kinase / PIP3 / IMMUNE SYSTEM | ||||||||||||||||||||||||||||||||||||
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 / 1-phosphatidylinositol-3-kinase regulator activity / respiratory burst involved in defense response / phosphatidylinositol 3-kinase complex ...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 / 1-phosphatidylinositol-3-kinase regulator activity / respiratory burst involved in defense response / phosphatidylinositol 3-kinase complex / 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 / mast cell degranulation / Erythropoietin activates Phosphoinositide-3-kinase (PI3K) / hepatocyte apoptotic process / phosphatidylinositol-mediated signaling / 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 / G-protein beta/gamma-subunit complex binding / 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 / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / non-specific serine/threonine protein kinase / 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 / nucleus / membrane / plasma membrane / cytosol / cytoplasm 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: 2.89 Å | ||||||||||||||||||||||||||||||||||||
![]() | Burke, J.E. / Dalwadi, U. / Rathinaswamy, M.K. / Yip, C.K. | ||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: HDX-MS-optimized approach to characterize nanobodies as tools for biochemical and structural studies of class IB phosphoinositide 3-kinases. 著者: Manoj K Rathinaswamy / Kaelin D Fleming / Udit Dalwadi / Els Pardon / Noah J Harris / Calvin K Yip / Jan Steyaert / John E Burke / ![]() ![]() 要旨: There is considerable interest in developing antibodies as modulators of signaling pathways. One of the most important signaling pathways in higher eukaryotes is the phosphoinositide 3-kinase (PI3K) ...There is considerable interest in developing antibodies as modulators of signaling pathways. One of the most important signaling pathways in higher eukaryotes is the phosphoinositide 3-kinase (PI3K) pathway, which plays fundamental roles in growth, metabolism, and immunity. The class IB PI3K, PI3Kγ, is a heterodimeric complex composed of a catalytic p110γ subunit bound to a p101 or p84 regulatory subunit. PI3Kγ is a critical component in multiple immune signaling processes and is dependent on activation by Ras and G protein-coupled receptors (GPCRs) to mediate its cellular roles. Here we describe the rapid and efficient characterization of multiple PI3Kγ binding single-chain camelid nanobodies using hydrogen-deuterium exchange (HDX) mass spectrometry (MS) for structural and biochemical studies. We identify nanobodies that stimulated lipid kinase activity, block Ras activation, and specifically inhibited p101-mediated GPCR activation. Overall, our work reveals insight into PI3Kγ regulation and identifies sites that may be exploited for therapeutic development. | ||||||||||||||||||||||||||||||||||||
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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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PDBx/mmCIF形式 | ![]() | 292.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 226.6 KB | 表示 | ![]() |
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その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 867.5 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 886.6 KB | 表示 | |
XML形式データ | ![]() | 49.7 KB | 表示 | |
CIF形式データ | ![]() | 76.4 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: 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: タンパク質 | 分子量: 97471.805 Da / 分子数: 1 / Mutation: G473R, V530A / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() 参照: UniProt: O02696 |
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: Ternary complex of p110 gamma with p101 and a p101 binding nanobody タイプ: COMPLEX 詳細: Nanobody binds to GBD domain, but was too fleixble to be built in the atomic model Entity ID: all / 由来: RECOMBINANT | |||||||||||||||||||||||||
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分子量 | 実験値: NO | |||||||||||||||||||||||||
由来(天然) |
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由来(組換発現) | 生物種: ![]() ![]() | |||||||||||||||||||||||||
緩衝液 | pH: 8.5 詳細: Freshly prepared gel filtration buffer, filtered through 0.22um filter and degassed | |||||||||||||||||||||||||
緩衝液成分 |
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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 a 1:1:1 molar ratio of p110g-p101-nanobody, purified to homogeneity by gel filtration. | |||||||||||||||||||||||||
試料支持 | 詳細: Glow discharged using the Pelco EasiGlow. 15mA Current. 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 K / 詳細: 1.5s blot time, -5 blot force |
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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): 2400 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm |
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: 36.4 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: 6808 詳細: Movies were collected in super-resolution mode set to collect 3 shots per grid hole over 9 holes by beam-shift before applying a stage shift. |
電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
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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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画像処理 | 詳細: All data processing carried out using cryoSPARC v2.18 or newer. Movies were subjected to patch motion correction and 2x2 binning. CTFs of the resulting micrographs were estimated using patch ...詳細: All data processing carried out using cryoSPARC v2.18 or newer. Movies were subjected to patch motion correction and 2x2 binning. CTFs of the resulting micrographs were estimated using patch CTF estimation. Template picking using 2D averages low-pass filtered to 20A was carried out before 1 round of 2D and 1 round of 3D classification. Best particles were refined by local motion correction, then subjected to 1 more round of 3D classification. Best class/particles were refined by homogeneous refinement, followed by CTF/defocus refinement and a final non-uniform refinement step. | ||||||||||||||||||||||||||||
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: 3762631 詳細: Particles were picked using the cryoSPARC template picker | ||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.89 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 320179 / 詳細: cryoSPARC local refinement job (L) from v3.0 / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
拘束条件 |
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