+データを開く
-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 | ||||||
要素 |
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キーワード | TRANSFERASE / PI3K / p110 / PIK3CG / PIK3R5 / p101 / phosphoinositide 3-kinase / PIP3 / IMMUNE SYSTEM | ||||||
機能・相同性 | 機能・相同性情報 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 / negative regulation of cardiac muscle contraction / 1-phosphatidylinositol-3-kinase regulator activity / regulation of calcium ion transmembrane transport ...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 / negative regulation of cardiac muscle contraction / 1-phosphatidylinositol-3-kinase regulator activity / regulation of calcium ion transmembrane transport / T cell chemotaxis / negative regulation of fibroblast apoptotic process / phosphatidylinositol 3-kinase complex, class IB / sphingosine-1-phosphate receptor signaling pathway / phosphatidylinositol 3-kinase complex, class IA / phosphatidylinositol 3-kinase complex / dendritic cell chemotaxis / 1-phosphatidylinositol-4-phosphate 3-kinase activity / 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity / phosphatidylinositol-4,5-bisphosphate 3-kinase / phosphatidylinositol 3-kinase / phosphatidylinositol-3-phosphate biosynthetic process / 1-phosphatidylinositol-3-kinase activity / mast cell degranulation / Erythropoietin activates Phosphoinositide-3-kinase (PI3K) / hepatocyte apoptotic process / positive regulation of Rac protein signal transduction / regulation of cell adhesion mediated by integrin / phosphatidylinositol-mediated signaling / Synthesis of PIPs at the plasma membrane / phosphatidylinositol phosphate biosynthetic process / regulation of angiogenesis / phosphorylation / T cell proliferation / cellular response to cAMP / GPVI-mediated activation cascade / neutrophil chemotaxis / ephrin receptor binding / phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of endothelial cell migration / T cell activation / positive regulation of cytokine production / positive regulation of MAP kinase activity / G-protein beta/gamma-subunit complex binding / platelet aggregation / endocytosis / G beta:gamma signalling through PI3Kgamma / kinase activity / phospholipase C-activating G protein-coupled receptor signaling pathway / positive regulation of cytosolic calcium ion concentration / angiogenesis / adaptive immune response / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / non-specific serine/threonine protein kinase / protein kinase activity / inflammatory response / immune response / G protein-coupled receptor signaling pathway / innate immune response / protein serine kinase activity / protein serine/threonine kinase activity / ATP binding / identical protein binding / membrane / nucleus / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) Sus scrofa (ブタ) | ||||||
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 | ||||||
データ登録者 | Burke, J.E. / Dalwadi, U. / Rathinaswamy, M.K. / Yip, C.K. | ||||||
資金援助 | カナダ, 1件
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引用 | ジャーナル: Structure / 年: 2021 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. | ||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7mez.cif.gz | 291.6 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7mez.ent.gz | 226.6 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7mez.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7mez_validation.pdf.gz | 869.4 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7mez_full_validation.pdf.gz | 886.9 KB | 表示 | |
XML形式データ | 7mez_validation.xml.gz | 50.4 KB | 表示 | |
CIF形式データ | 7mez_validation.cif.gz | 75.7 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/me/7mez ftp://data.pdbj.org/pub/pdb/validation_reports/me/7mez | HTTPS FTP |
-関連構造データ
-リンク
-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) Homo sapiens (ヒト) / 遺伝子: PIK3CG 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 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) Sus scrofa (ブタ) / 遺伝子: PIK3R5 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: O02696 |
-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 |
-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: Spodoptera frugiperda (ツマジロクサヨトウ) | |||||||||||||||||||||||||
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 |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
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 |
-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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