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基本情報
登録情報 | データベース: PDB / ID: 7usd | ||||||
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タイトル | Cryo-EM structure of D-site Rac1-bound WAVE Regulatory Complex | ||||||
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![]() | CELL INVASION / actin regulator / GTPase binding protein / cytoskeletal regulator | ||||||
機能・相同性 | ![]() zygotic determination of anterior/posterior axis, embryo / dendritic transport of mitochondrion / SCAR complex / notochord morphogenesis / mesodermal cell migration / positive regulation of neurotrophin TRK receptor signaling pathway / lamellipodium morphogenesis / basal protein localization / paraxial mesoderm morphogenesis / positive regulation of Arp2/3 complex-mediated actin nucleation ...zygotic determination of anterior/posterior axis, embryo / dendritic transport of mitochondrion / SCAR complex / notochord morphogenesis / mesodermal cell migration / positive regulation of neurotrophin TRK receptor signaling pathway / lamellipodium morphogenesis / basal protein localization / paraxial mesoderm morphogenesis / positive regulation of Arp2/3 complex-mediated actin nucleation / embryonic body morphogenesis / establishment or maintenance of actin cytoskeleton polarity / cell migration involved in gastrulation / Arp2/3 complex binding / regulation of actin polymerization or depolymerization / embryonic olfactory bulb interneuron precursor migration / anatomical structure arrangement / regulation of ERK5 cascade / angiotensin-activated signaling pathway involved in heart process / positive regulation of ovarian follicle development / cerebral cortex GABAergic interneuron development / regulation of respiratory burst / dendrite extension / auditory receptor cell morphogenesis / cerebral cortex radially oriented cell migration / modification of postsynaptic actin cytoskeleton / erythrocyte enucleation / regulation of neutrophil migration / negative regulation of interleukin-23 production / localization within membrane / regulation of translation at postsynapse, modulating synaptic transmission / Activated NTRK2 signals through CDK5 / regulation of hydrogen peroxide metabolic process / interneuron migration / kinocilium / regulation of cell adhesion involved in heart morphogenesis / negative regulation of receptor-mediated endocytosis / engulfment of apoptotic cell / ruffle assembly / NTRK2 activates RAC1 / NADPH oxidase complex / Inactivation of CDC42 and RAC1 / cochlea morphogenesis / embryonic foregut morphogenesis / regulation of neuron maturation / regulation of actin filament polymerization / respiratory burst / WNT5:FZD7-mediated leishmania damping / cortical cytoskeleton organization / SEMA3A-Plexin repulsion signaling by inhibiting Integrin adhesion / positive regulation of skeletal muscle acetylcholine-gated channel clustering / regulation of modification of postsynaptic actin cytoskeleton / hepatocyte growth factor receptor signaling pathway / GTP-dependent protein binding / endoderm development / RNA 7-methylguanosine cap binding / midbrain dopaminergic neuron differentiation / ruffle organization / epithelial cell morphogenesis / cell projection assembly / positive regulation of bicellular tight junction assembly / regulation of lamellipodium assembly / thioesterase binding / regulation of stress fiber assembly / regulation of neuron migration / negative regulation of fibroblast migration / RHO GTPases activate CIT / cell-cell junction organization / sphingosine-1-phosphate receptor signaling pathway / embryonic heart tube development / Nef and signal transduction / motor neuron axon guidance / PCP/CE pathway / RHO GTPases activate KTN1 / Activation of RAC1 / apical protein localization / axon extension / MET activates RAP1 and RAC1 / positive regulation of neutrophil chemotaxis / regulation of nitric oxide biosynthetic process / DCC mediated attractive signaling / Azathioprine ADME / Sema4D mediated inhibition of cell attachment and migration / hyperosmotic response / positive regulation of cell-substrate adhesion / Ephrin signaling / CD28 dependent Vav1 pathway / positive regulation of ruffle assembly / cortical actin cytoskeleton organization / superoxide anion generation / Wnt signaling pathway, planar cell polarity pathway / lamellipodium assembly / regulation of receptor signaling pathway via JAK-STAT / Activation of RAC1 downstream of NMDARs / small GTPase-mediated signal transduction / protein kinase A binding / NRAGE signals death through JNK / dendrite morphogenesis / regulation of cell size / Rho GDP-dissociation inhibitor binding 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: 3 Å | ||||||
![]() | Ding, B. / Yang, S. / Chen, B. / Chowdhury, S. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structures reveal a key mechanism of WAVE regulatory complex activation by Rac1 GTPase. 著者: Bojian Ding / Sheng Yang / Matthias Schaks / Yijun Liu / Abbigale J Brown / Klemens Rottner / Saikat Chowdhury / Baoyu Chen / ![]() ![]() ![]() 要旨: The Rho-family GTPase Rac1 activates the WAVE regulatory complex (WRC) to drive Arp2/3 complex-mediated actin polymerization in many essential processes. Rac1 binds to WRC at two distinct sites-the ...The Rho-family GTPase Rac1 activates the WAVE regulatory complex (WRC) to drive Arp2/3 complex-mediated actin polymerization in many essential processes. Rac1 binds to WRC at two distinct sites-the A and D sites. Precisely how Rac1 binds and how the binding triggers WRC activation remain unknown. Here we report WRC structures by itself, and when bound to single or double Rac1 molecules, at ~3 Å resolutions by cryogenic-electron microscopy. The structures reveal that Rac1 binds to the two sites by distinct mechanisms, and binding to the A site, but not the D site, drives WRC activation. Activation involves a series of unique conformational changes leading to the release of sequestered WCA (WH2-central-acidic) polypeptide, which stimulates the Arp2/3 complex to polymerize actin. Together with biochemical and cellular analyses, the structures provide a novel mechanistic understanding of how the Rac1-WRC-Arp2/3-actin signaling axis is regulated in diverse biological processes and diseases. | ||||||
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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 | ![]() | 524 KB | 表示 | ![]() |
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PDB形式 | ![]() | 417.2 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.4 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.4 MB | 表示 | |
XML形式データ | ![]() | 82.1 KB | 表示 | |
CIF形式データ | ![]() | 124.9 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 | ![]() 26733MC ![]() 7uscC ![]() 7useC 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
-タンパク質 , 6種, 6分子 ABCDEF
#1: タンパク質 | 分子量: 145363.750 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: This construct contains two additional uncleaved residues "GA" in the N terminus from the construct design and purification procedure. Densities for these residues are not observed in the map ...詳細: This construct contains two additional uncleaved residues "GA" in the N terminus from the construct design and purification procedure. Densities for these residues are not observed in the map and were not included in the sample sequence to avoid numbering shifts. 由来: (組換発現) ![]() ![]() |
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#2: タンパク質 | 分子量: 128940.727 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: This construct contains two additional uncleaved residues "GA" in the N terminus from the construct design and purification procedure. Densities for these residues are not observed in the map ...詳細: This construct contains two additional uncleaved residues "GA" in the N terminus from the construct design and purification procedure. Densities for these residues are not observed in the map and were not included in the sample sequence to avoid numbering shifts. 由来: (組換発現) ![]() ![]() |
#3: タンパク質 | 分子量: 37009.406 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Residues 231-248 are inserted as a flexible linker sequence. This construct contains two additional uncleaved residues "GA" in the N terminus from the construct design and purification ...詳細: Residues 231-248 are inserted as a flexible linker sequence. This construct contains two additional uncleaved residues "GA" in the N terminus from the construct design and purification procedure. Densities for these residues are not observed in the map and were not included in the sample sequence to avoid numbering shifts. 由来: (組換発現) ![]() ![]() ![]() |
#4: タンパク質 | 分子量: 8756.915 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: This construct contains uncleaved residues "GHMGAA" in the N terminus from the construct design and purification procedure. Densities for the residues are not observed in the map and were not ...詳細: This construct contains uncleaved residues "GHMGAA" in the N terminus from the construct design and purification procedure. Densities for the residues are not observed in the map and were not included in the sample sequence to avoid numbering shifts. 由来: (組換発現) ![]() ![]() ![]() |
#5: タンパク質 | 分子量: 18041.482 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: The sequence only contains residues 1-158. Also, there are two additional uncleaved residues "GH" in the N terminus from the construct design and purification procedure. Densities for these ...詳細: The sequence only contains residues 1-158. Also, there are two additional uncleaved residues "GH" in the N terminus from the construct design and purification procedure. Densities for these residues are not observed in the map and were not included in the sample sequence to avoid numbering shifts. 由来: (組換発現) ![]() ![]() ![]() |
#6: タンパク質 | 分子量: 21010.486 Da / 分子数: 1 / Mutation: P29S, Q61L / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
-非ポリマー , 2種, 2分子 


#7: 化合物 | ChemComp-GTP / |
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#8: 化合物 | ChemComp-MG / |
-詳細
研究の焦点であるリガンドがあるか | Y |
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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 | 名称: WAVE regulatory complex with Rac1 bound to D-site / タイプ: COMPLEX / Entity ID: #1-#6 / 由来: MULTIPLE SOURCES | ||||||||||||
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分子量 | 値: 0.36 MDa / 実験値: NO | ||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||
由来(組換発現) |
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緩衝液 | pH: 7 | ||||||||||||
試料 | 濃度: 0.41 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||
試料支持 | 詳細: 30 mA / 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: HOMEMADE PLUNGER / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 277.15 K |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS ARCTICA 詳細: Data were collected by shifting the stage to target exposure positions. |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 120000 X / 最大 デフォーカス(公称値): 1000 nm / 最小 デフォーカス(公称値): 500 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm / アライメント法: BASIC |
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 | 平均露光時間: 40 sec. / 電子線照射量: 45.27 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) 撮影したグリッド数: 1 / 実像数: 2512 詳細: Each micrograph was acquired as dose-fractionated movies consisting of 62 frames per movie. |
画像スキャン | サンプリングサイズ: 14 µm / 横: 4096 / 縦: 4096 |
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解析
EMソフトウェア |
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CTF補正 | 詳細: Particles were CTF-corrected during projection matching and back projection タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 1765193 | ||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 87810 / アルゴリズム: BACK PROJECTION / クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL | ||||||||||||||||||||||||||||||||||||
原子モデル構築 |
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