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基本情報
登録情報 | データベース: PDB / ID: 7sj4 | |||||||||
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タイトル | Human Trio residues 1284-1959 in complex with Rac1 | |||||||||
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![]() | SIGNALING PROTEIN / guanine nucleotide exchange factor / GTPase / dbl homology / pleckstrin homology | |||||||||
機能・相同性 | ![]() cell surface receptor protein tyrosine phosphatase signaling pathway / regulation of respiratory burst / regulation of neutrophil migration / negative regulation of interleukin-23 production / localization within membrane / Activated NTRK2 signals through CDK5 / regulation of hydrogen peroxide metabolic process / negative regulation of receptor-mediated endocytosis / ruffle assembly / NTRK2 activates RAC1 ...cell surface receptor protein tyrosine phosphatase signaling pathway / regulation of respiratory burst / regulation of neutrophil migration / negative regulation of interleukin-23 production / localization within membrane / Activated NTRK2 signals through CDK5 / regulation of hydrogen peroxide metabolic process / negative regulation of receptor-mediated endocytosis / ruffle assembly / NTRK2 activates RAC1 / NADPH oxidase complex / Inactivation of CDC42 and RAC1 / respiratory burst / WNT5:FZD7-mediated leishmania damping / cortical cytoskeleton organization / SEMA3A-Plexin repulsion signaling by inhibiting Integrin adhesion / hepatocyte growth factor receptor signaling pathway / ruffle organization / cell projection assembly / positive regulation of bicellular tight junction assembly / thioesterase binding / regulation of stress fiber assembly / regulation of lamellipodium assembly / negative regulation of fibroblast migration / RHO GTPases activate CIT / regulation of nitric oxide biosynthetic process / motor neuron axon guidance / Nef and signal transduction / sphingosine-1-phosphate receptor signaling pathway / PCP/CE pathway / Activation of RAC1 / RHO GTPases activate KTN1 / MET activates RAP1 and RAC1 / DCC mediated attractive signaling / regulation of small GTPase mediated signal transduction / Azathioprine ADME / positive regulation of cell-substrate adhesion / positive regulation of neutrophil chemotaxis / Sema4D mediated inhibition of cell attachment and migration / Ephrin signaling / CD28 dependent Vav1 pathway / superoxide anion generation / Wnt signaling pathway, planar cell polarity pathway / lamellipodium assembly / extrinsic component of membrane / Activation of RAC1 downstream of NMDARs / small GTPase-mediated signal transduction / NRAGE signals death through JNK / regulation of cell size / negative regulation of fat cell differentiation / positive regulation of Rho protein signal transduction / Rho GDP-dissociation inhibitor binding / establishment or maintenance of cell polarity / RHOJ GTPase cycle / Rac protein signal transduction / RHO GTPases activate PAKs / presynaptic active zone / semaphorin-plexin signaling pathway / CDC42 GTPase cycle / ficolin-1-rich granule membrane / Sema3A PAK dependent Axon repulsion / RHOG GTPase cycle / RHO GTPases Activate NADPH Oxidases / EPH-ephrin mediated repulsion of cells / positive regulation of focal adhesion assembly / RHOA GTPase cycle / anatomical structure morphogenesis / RAC2 GTPase cycle / RHO GTPases Activate WASPs and WAVEs / RAC3 GTPase cycle / RHO GTPases activate IQGAPs / postsynaptic modulation of chemical synaptic transmission / PTK6 Regulates RHO GTPases, RAS GTPase and MAP kinases / positive regulation of lamellipodium assembly / RHO GTPases activate PKNs / GPVI-mediated activation cascade / positive regulation of stress fiber assembly / positive regulation of microtubule polymerization / actin filament polymerization / EPHB-mediated forward signaling / RAC1 GTPase cycle / positive regulation of substrate adhesion-dependent cell spreading / positive regulation of endothelial cell migration / substrate adhesion-dependent cell spreading / axon guidance / neuron projection morphogenesis / regulation of cell migration / secretory granule membrane / guanyl-nucleotide exchange factor activity / small monomeric GTPase / actin filament organization / cell-matrix adhesion / Signal transduction by L1 / VEGFR2 mediated vascular permeability / cell projection / Translocation of SLC2A4 (GLUT4) to the plasma membrane / cell chemotaxis / regulation of actin cytoskeleton organization / FCGR3A-mediated phagocytosis / FCERI mediated MAPK activation 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: 2.86 Å | |||||||||
![]() | Chen, C.-L. / Ravala, S.K. / Bandekar, S.J. / Cash, J. / Tesmer, J.J.G. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural/functional studies of Trio provide insights into its configuration and show that conserved linker elements enhance its activity for Rac1. 著者: Sumit J Bandekar / Chun-Liang Chen / Sandeep K Ravala / Jennifer N Cash / Larisa V Avramova / Mariya V Zhalnina / J Silvio Gutkind / Sheng Li / John J G Tesmer / ![]() 要旨: Trio is a large and highly conserved metazoan signaling scaffold that contains two Dbl family guanine nucleotide exchange factor (GEF) modules, TrioN and TrioC, selective for Rac and RhoA GTPases, ...Trio is a large and highly conserved metazoan signaling scaffold that contains two Dbl family guanine nucleotide exchange factor (GEF) modules, TrioN and TrioC, selective for Rac and RhoA GTPases, respectively. The GEF activities of TrioN and TrioC are implicated in several cancers, especially uveal melanoma. However, little is known about how these modules operate in the context of larger fragments of Trio. Here we show via negative stain electron microscopy that the N-terminal region of Trio is extended and could thus serve as a rigid spacer between the N-terminal putative lipid-binding domain and TrioN, whereas the C-terminal half of Trio seems globular. We found that regions C-terminal to TrioN enhance its Rac1 GEF activity and thus could play a regulatory role. We went on to characterize a minimal, well-behaved Trio fragment with enhanced activity, Trio, in complex with Rac1 using cryo-electron microscopy and hydrogen-deuterium exchange mass spectrometry and found that the region conferring enhanced activity is disordered. Deletion of two different strongly conserved motifs in this region eliminated this enhancement, suggesting that they form transient intramolecular interactions that promote GEF activity. Because Dbl family RhoGEF modules have been challenging to directly target with small molecules, characterization of accessory Trio domains such as these may provide alternate routes for the development of therapeutics that inhibit Trio activity in human cancer. | |||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 119.8 KB | 表示 | ![]() |
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PDB形式 | ![]() | 83.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
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アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 25153MC 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: 75592.969 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() 参照: UniProt: O75962, non-specific serine/threonine protein kinase |
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#2: タンパク質 | 分子量: 21811.453 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
#3: 水 | ChemComp-HOH / |
-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: Human Trio residues 1284-1959 in complex with Rac1 / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT | ||||||||||||||||||||
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分子量 | 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 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.25 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||
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 / 湿度: 100 % / 凍結前の試料温度: 277 K / 詳細: Blot force 10 |
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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): 81000 X / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm / C2レンズ絞り径: 100 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER Residual tilt: 0.01 mradians |
撮影 | 平均露光時間: 3.12 sec. / 電子線照射量: 55 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 実像数: 2817 詳細: 3514 movies were initially collected. After motion correction and CTF estimation, 697 micrographs were rejected due to poor CTF fitting. |
画像スキャン | 横: 11520 / 縦: 8184 / 動画フレーム数/画像: 40 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.20_4459: / 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: 2.86 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 922202 / アルゴリズム: BACK PROJECTION / 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 / Target criteria: correlation coefficient 詳細: The initial model was generated from the pdb structure (2NZ8) using the SWISS-MODEL server and rigid-body fitted using Chimera. Several runs of structure refinement were done using the coot ...詳細: The initial model was generated from the pdb structure (2NZ8) using the SWISS-MODEL server and rigid-body fitted using Chimera. Several runs of structure refinement were done using the coot and phenix real-space refinement. | ||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1 / Accession code: 2NZ8 / Initial refinement model-ID: 1 / PDB-ID: 2NZ8 / Source name: PDB / タイプ: experimental model
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