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基本情報
| 登録情報 | データベース: PDB / ID: 9qfd | |||||||||||||||
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| タイトル | Cryo-EM structure of the fully cofilin-1-decorated actin filament (cofilactin) | |||||||||||||||
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キーワード | STRUCTURAL PROTEIN / actin / cofilin / filament / cytoskeleton | |||||||||||||||
| 機能・相同性 | 機能・相同性情報cellular response to ether / cofilin-actin rod / positive regulation of protein localization to cell leading edge / positive regulation of establishment of cell polarity regulating cell shape / negative regulation of unidimensional cell growth / positive regulation of barbed-end actin filament capping / neural fold formation / negative regulation of lamellipodium assembly / negative regulation of postsynaptic density organization / actin filament fragmentation ...cellular response to ether / cofilin-actin rod / positive regulation of protein localization to cell leading edge / positive regulation of establishment of cell polarity regulating cell shape / negative regulation of unidimensional cell growth / positive regulation of barbed-end actin filament capping / neural fold formation / negative regulation of lamellipodium assembly / negative regulation of postsynaptic density organization / actin filament fragmentation / positive regulation of actin filament depolymerization / modification of postsynaptic actin cytoskeleton / positive regulation of norepinephrine uptake / positive regulation of embryonic development / negative regulation of actin filament bundle assembly / positive regulation of synaptic plasticity / negative regulation of actin filament depolymerization / cellular response to cytochalasin B / bBAF complex / npBAF complex / nBAF complex / brahma complex / actin filament severing / regulation of transepithelial transport / Formation of annular gap junctions / morphogenesis of a polarized epithelium / Formation of the dystrophin-glycoprotein complex (DGC) / structural constituent of postsynaptic actin cytoskeleton / GBAF complex / Gap junction degradation / Folding of actin by CCT/TriC / regulation of dendritic spine morphogenesis / regulation of G0 to G1 transition / protein localization to adherens junction / establishment of spindle localization / Cell-extracellular matrix interactions / host-mediated activation of viral process / actin filament depolymerization / dense body / postsynaptic actin cytoskeleton / Tat protein binding / cell projection organization / negative regulation of cell adhesion / negative regulation of cell motility / Prefoldin mediated transfer of substrate to CCT/TriC / RSC-type complex / RHO GTPases Activate ROCKs / negative regulation of cell size / regulation of double-strand break repair / regulation of nucleotide-excision repair / cellular response to interleukin-6 / regulation of cell morphogenesis / Adherens junctions interactions / RHOF GTPase cycle / negative regulation of dendritic spine maintenance / adherens junction assembly / apical protein localization / Sensory processing of sound by outer hair cells of the cochlea / neural crest cell migration / Interaction between L1 and Ankyrins / tight junction / SWI/SNF complex / regulation of mitotic metaphase/anaphase transition / Sensory processing of sound by inner hair cells of the cochlea / positive regulation of cell motility / positive regulation of T cell differentiation / apical junction complex / cortical actin cytoskeleton / phosphatidylinositol bisphosphate binding / regulation of norepinephrine uptake / cellular response to insulin-like growth factor stimulus / positive regulation of double-strand break repair / transporter regulator activity / maintenance of blood-brain barrier / establishment of cell polarity / nitric-oxide synthase binding / positive regulation of dendritic spine development / cortical cytoskeleton / NuA4 histone acetyltransferase complex / establishment or maintenance of cell polarity / positive regulation of stem cell population maintenance / Regulation of MITF-M-dependent genes involved in pigmentation / Recycling pathway of L1 / brush border / mitotic cytokinesis / regulation of G1/S transition of mitotic cell cycle / lamellipodium membrane / positive regulation of proteolysis / Sema3A PAK dependent Axon repulsion / kinesin binding / EPH-ephrin mediated repulsion of cells / cellular response to interleukin-1 / negative regulation of cell differentiation / positive regulation of focal adhesion assembly / RHO GTPases Activate WASPs and WAVEs / regulation of synaptic vesicle endocytosis / response to amino acid / positive regulation of myoblast differentiation / RHO GTPases activate IQGAPs / postsynaptic density, intracellular component 類似検索 - 分子機能 | |||||||||||||||
| 生物種 | Homo sapiens (ヒト) | |||||||||||||||
| 手法 | 電子顕微鏡法 / らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 2.61 Å | |||||||||||||||
データ登録者 | Oosterheert, W. / Boiero Sanders, M. / Hofnagel, O. / Bieling, P. / Raunser, S. | |||||||||||||||
| 資金援助 | ドイツ, European Union, 4件
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引用 | ジャーナル: Cell / 年: 2025タイトル: Choreography of rapid actin filament disassembly by coronin, cofilin, and AIP1. 著者: Wout Oosterheert / Micaela Boiero Sanders / Oliver Hofnagel / Peter Bieling / Stefan Raunser / ![]() 要旨: Rapid remodeling of actin filament (F-actin) networks is essential for the movement and morphogenesis of eukaryotic cells. The conserved actin-binding proteins coronin, cofilin, and actin-interacting ...Rapid remodeling of actin filament (F-actin) networks is essential for the movement and morphogenesis of eukaryotic cells. The conserved actin-binding proteins coronin, cofilin, and actin-interacting protein 1 (AIP1) act in synergy to promote rapid F-actin network disassembly, but the underlying mechanisms have remained elusive. Here, using cryo-electron microscopy (cryo-EM), we uncover the concerted molecular actions of coronin, cofilin, and AIP1 that lead to actin filament aging and severing. We find that the cooperative binding of coronin allosterically promotes inorganic phosphate release from F-actin and induces filament undertwisting, thereby priming the filament for cofilin binding. Cofilin then displaces coronin from the filament via a strand-restricted cooperative binding mechanism. The resulting cofilactin serves as a high-affinity platform for AIP1, which induces severing by acting as a clamp that disrupts inter-subunit filament contacts. In this "molecular squeezing" mechanism, AIP1 and not cofilin is responsible for filament severing. Our work redefines the role of key disassembly factors in actin dynamics. | |||||||||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 9qfd.cif.gz | 867.4 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9qfd.ent.gz | 577.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9qfd.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 | 9qfd_validation.pdf.gz | 2 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9qfd_full_validation.pdf.gz | 2 MB | 表示 | |
| XML形式データ | 9qfd_validation.xml.gz | 112.2 KB | 表示 | |
| CIF形式データ | 9qfd_validation.cif.gz | 164.2 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/qf/9qfd ftp://data.pdbj.org/pub/pdb/validation_reports/qf/9qfd | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 53106MC ![]() 9qewC ![]() 9qeyC ![]() 9qf2C ![]() 9qfbC ![]() 9qfeC ![]() 9qfgC ![]() 9qfjC ![]() 9qfkC ![]() 9qfoC ![]() 9qfqC ![]() 9qfwC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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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: 41632.422 Da / 分子数: 7 / 変異: C272A / 由来タイプ: 組換発現 / 詳細: actin filament / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ACTB / 細胞株 (発現宿主): BTI-Tnao38 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P60709#2: タンパク質 | 分子量: 18532.531 Da / 分子数: 7 / 由来タイプ: 組換発現 / 詳細: Cofilin / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CFL1, CFL / 発現宿主: ![]() #3: 化合物 | ChemComp-ADP / #4: 化合物 | ChemComp-MG / 研究の焦点であるリガンドがあるか | Y | Has protein modification | 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: FILAMENT / 3次元再構成法: らせん対称体再構成法 |
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試料調製
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| 分子量 |
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| 由来(組換発現) |
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| 緩衝液 | pH: 7.1 詳細: 1xKMEH (10 mM HEPES pH 7.1, 100 mM KCl, 2 mM MgCl2, 1 mM EGTA, 0.5 mM TCEP, 0.02% Tween20). | |||||||||||||||||||||||||||||||||||
| 緩衝液成分 |
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| 試料 | 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: COPPER / グリッドのサイズ: 200 divisions/in. / グリッドのタイプ: Quantifoil R2/1 | |||||||||||||||||||||||||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE-PROPANE / 湿度: 100 % / 凍結前の試料温度: 286 K |
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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: TFS 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 / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): 2700 nm / 最小 デフォーカス(公称値): 1200 nm / Cs: 0.01 mm / C2レンズ絞り径: 50 µm |
| 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: 65.8 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: 14055 |
| 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: 15 eV 球面収差補正装置: The used Titan Krios G2 microscope contains an in-column Cs corrector. |
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解析
| EMソフトウェア |
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| CTF補正 | 詳細: Patch CTF / タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| らせん対称 | 回転角度/サブユニット: -162.4 ° / 軸方向距離/サブユニット: 27.4 Å / らせん対称軸の対称性: C1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 10071093 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.61 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 798636 / 対称性のタイプ: HELICAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL / 詳細: Phenix real space refinement. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 6VAO Accession code: 6VAO / Source name: PDB / タイプ: experimental model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子変位パラメータ | Biso mean: 83.46 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 拘束条件 |
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ムービー
コントローラー
万見について




Homo sapiens (ヒト)
ドイツ, European Union, 4件
引用


























PDBj




















Trichoplusia ni (イラクサキンウワバ)



FIELD EMISSION GUN
