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基本情報
登録情報 | データベース: EMDB / ID: EMD-2504 | |||||||||
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タイトル | Septin-Gic1-Cdc42-GppNHp complex in a single-tilt-axis subtomogram | |||||||||
![]() | Cryo-Tomogram of Septin/Gic1/Cdc42-GppNHp Complex. | |||||||||
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![]() | cell division / bud neck filaments / cytokinesis / cytoskeleton / electron tomography / septin / gic / cdc42 | |||||||||
機能・相同性 | ![]() septin ring organization / Cdc42 protein signal transduction / GBD domain binding / submandibular salivary gland formation / Golgi transport complex / positive regulation of pinocytosis / actin filament branching / positive regulation of synapse structural plasticity / dendritic cell migration / endothelin receptor signaling pathway involved in heart process ...septin ring organization / Cdc42 protein signal transduction / GBD domain binding / submandibular salivary gland formation / Golgi transport complex / positive regulation of pinocytosis / actin filament branching / positive regulation of synapse structural plasticity / dendritic cell migration / endothelin receptor signaling pathway involved in heart process / cardiac neural crest cell migration involved in outflow tract morphogenesis / storage vacuole / organelle transport along microtubule / positive regulation of epithelial cell proliferation involved in lung morphogenesis / apolipoprotein A-I receptor binding / incipient cellular bud site / neuron fate determination / cellular bud tip / regulation of attachment of spindle microtubules to kinetochore / positive regulation of pseudopodium assembly / GTP-dependent protein binding / Inactivation of CDC42 and RAC1 / cardiac conduction system development / modulation by host of viral process / establishment of Golgi localization / regulation of filopodium assembly / leading edge membrane / regulation of exit from mitosis / neuropilin signaling pathway / positive regulation of intracellular protein transport / cellular bud neck / cell junction assembly / filopodium assembly / establishment of epithelial cell apical/basal polarity / dendritic spine morphogenesis / mating projection tip / mitogen-activated protein kinase kinase kinase binding / thioesterase binding / regulation of modification of postsynaptic structure / regulation of stress fiber assembly / regulation of lamellipodium assembly / adherens junction organization / embryonic heart tube development / RHO GTPases activate KTN1 / DCC mediated attractive signaling / regulation of postsynapse organization / CD28 dependent Vav1 pathway / sprouting angiogenesis / positive regulation of filopodium assembly / Wnt signaling pathway, planar cell polarity pathway / nuclear migration / regulation of mitotic nuclear division / phagocytosis, engulfment / RHOV GTPase cycle / small GTPase-mediated signal transduction / Myogenesis / heart contraction / establishment of cell polarity / establishment or maintenance of cell polarity / Golgi organization / RHOJ GTPase cycle / positive regulation of cytokinesis / RHOQ GTPase cycle / RHO GTPases activate PAKs / RHOU GTPase cycle / CDC42 GTPase cycle / macrophage differentiation / RHOG GTPase cycle / RAC2 GTPase cycle / RHO GTPases Activate WASPs and WAVEs / RAC3 GTPase cycle / spindle midzone / RHO GTPases activate IQGAPs / negative regulation of protein-containing complex assembly / positive regulation of lamellipodium assembly / GPVI-mediated activation cascade / phagocytic vesicle / positive regulation of stress fiber assembly / EPHB-mediated forward signaling / RAC1 GTPase cycle / positive regulation of substrate adhesion-dependent cell spreading / substantia nigra development / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / secretory granule / small monomeric GTPase / actin filament organization / positive regulation of DNA replication / integrin-mediated signaling pathway / filopodium / regulation of actin cytoskeleton organization / FCGR3A-mediated phagocytosis / positive regulation of JNK cascade / RHO GTPases Activate Formins / EGFR downregulation / MAPK6/MAPK4 signaling / Schaffer collateral - CA1 synapse / small GTPase binding / Regulation of actin dynamics for phagocytic cup formation / cellular response to type II interferon / VEGFA-VEGFR2 Pathway 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() ![]() | |||||||||
手法 | 電子線トモグラフィー法 / クライオ電子顕微鏡法 / 解像度: 60.0 Å | |||||||||
![]() | Sadian Y / Gatsogiannis C / Patasi C / Hofnagel O / Goody RS / Farkasovsky M / Raunser S | |||||||||
![]() | ![]() タイトル: The role of Cdc42 and Gic1 in the regulation of septin filament formation and dissociation. 著者: Yashar Sadian / Christos Gatsogiannis / Csilla Patasi / Oliver Hofnagel / Roger S Goody / Marian Farkasovský / Stefan Raunser / ![]() 要旨: Septins are guanine nucleotide-binding proteins that polymerize into filamentous and higher-order structures. Cdc42 and its effector Gic1 are involved in septin recruitment, ring formation and ...Septins are guanine nucleotide-binding proteins that polymerize into filamentous and higher-order structures. Cdc42 and its effector Gic1 are involved in septin recruitment, ring formation and dissociation. The regulatory mechanisms behind these processes are not well understood. Here, we have used electron microscopy and cryo electron tomography to elucidate the structural basis of the Gic1-septin and Gic1-Cdc42-septin interaction. We show that Gic1 acts as a scaffolding protein for septin filaments forming long and flexible filament cables. Cdc42 in its GTP-form binds to Gic1, which ultimately leads to the dissociation of Gic1 from the filament cables. Surprisingly, Cdc42-GDP is not inactive, but in the absence of Gic1 directly interacts with septin filaments resulting in their disassembly. We suggest that this unanticipated dual function of Cdc42 is crucial for the cell cycle. Based on our results we propose a novel regulatory mechanism for septin filament formation and dissociation. DOI: http://dx.doi.org/10.7554/eLife.01085.001. | |||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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ダウンロードとリンク
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マップデータ | ![]() | 11.1 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 10.6 KB 10.6 KB | 表示 表示 | ![]() |
画像 | ![]() | 1.7 MB | ||
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 | ![]() 2505C 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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | Cryo-Tomogram of Septin/Gic1/Cdc42-GppNHp Complex. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 これらの図は立方格子座標系で作成されたものです | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 7.2 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
-全体 : Septin-Gic1-Cdc42-GppNHp complex
全体 | 名称: Septin-Gic1-Cdc42-GppNHp complex |
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要素 |
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-超分子 #1000: Septin-Gic1-Cdc42-GppNHp complex
超分子 | 名称: Septin-Gic1-Cdc42-GppNHp complex / タイプ: sample / ID: 1000 / Number unique components: 3 |
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-分子 #1: Septin
分子 | 名称: Septin / タイプ: protein_or_peptide / ID: 1 / 組換発現: Yes |
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由来(天然) | 生物種: ![]() ![]() |
組換発現 | 生物種: ![]() ![]() |
配列 | InterPro: Septin |
-分子 #2: Cell division control protein 42 homolog
分子 | 名称: Cell division control protein 42 homolog / タイプ: protein_or_peptide / ID: 2 / Name.synonym: Cdc42 / 組換発現: Yes / データベース: NCBI |
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由来(天然) | 生物種: ![]() |
配列 | UniProtKB: Cell division control protein 42 homolog |
-分子 #3: Gic1
分子 | 名称: Gic1 / タイプ: protein_or_peptide / ID: 3 / 組換発現: Yes |
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由来(天然) | 生物種: ![]() ![]() |
組換発現 | 生物種: ![]() ![]() |
配列 | UniProtKB: GTPase-interacting component 1 |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 電子線トモグラフィー法 |
試料の集合状態 | filament |
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試料調製
緩衝液 | pH: 7.5 / 詳細: 100 mM NaCl, 20 mM mM Tris-HCl, 1 mM DTT |
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グリッド | 詳細: 400 Mesh 2/1 C-flat holey carbon grids |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 90 % / チャンバー内温度: 100 K / 装置: GATAN CRYOPLUNGE 3 |
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電子顕微鏡法
顕微鏡 | JEOL 3200FSC |
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特殊光学系 | エネルギーフィルター - 名称: in-column Omega filter エネルギーフィルター - エネルギー下限: 0.0 eV エネルギーフィルター - エネルギー上限: 15.0 eV |
日付 | 2011年7月8日 |
撮影 | カテゴリ: CCD フィルム・検出器のモデル: TVIPS TEMCAM-F816 (8k x 8k) 実像数: 61 / 平均電子線量: 65 e/Å2 |
電子線 | 加速電圧: 200 kV / 電子線源: ![]() |
電子光学系 | 倍率(補正後): 85470 / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 4.1 mm / 倍率(公称値): 40000 |
試料ステージ | 試料ホルダーモデル: JEOL 3200FSC CRYOHOLDER / Tilt series - Axis1 - Min angle: -60 ° / Tilt series - Axis1 - Max angle: 60 ° / Tilt series - Axis1 - Angle increment: 2 ° |
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画像解析
詳細 | Standard eTOMO procedures for single axis tilt tomograms |
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最終 再構成 | アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 60.0 Å / 解像度の算出法: OTHER / ソフトウェア - 名称: ![]() |