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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9qfq | |||||||||||||||
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| タイトル | Cryo-EM structure of the cofilactin barbed end bound by AIP1 | |||||||||||||||
要素 |
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キーワード | STRUCTURAL PROTEIN / actin / cofilin / AIP1 / barbed end / filament / cytoskeleton | |||||||||||||||
| 機能・相同性 | 機能・相同性情報establishment of planar polarity of follicular epithelium / regulation of actin filament depolymerization / regulation of oligodendrocyte differentiation / 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 / MGMT-mediated DNA damage reversal / negative regulation of unidimensional cell growth / positive regulation of barbed-end actin filament capping ...establishment of planar polarity of follicular epithelium / regulation of actin filament depolymerization / regulation of oligodendrocyte differentiation / 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 / MGMT-mediated DNA damage reversal / 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 / methylated-DNA-[protein]-cysteine S-methyltransferase / methylated-DNA-[protein]-cysteine S-methyltransferase activity / actin filament fragmentation / maintenance of epithelial cell apical/basal polarity / positive regulation of actin filament depolymerization / negative regulation of actin filament bundle assembly / positive regulation of norepinephrine uptake / positive regulation of embryonic development / modification of postsynaptic actin cytoskeleton / DNA-methyltransferase activity / negative regulation of actin filament depolymerization / bBAF complex / neutrophil migration / Formation of the embryonic stem cell BAF (esBAF) complex / cellular response to cytochalasin B / cortical cytoskeleton organization / npBAF complex / brahma complex / nBAF complex / Formation of the canonical BAF (cBAF) complex / regulation of transepithelial transport / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) / actin filament severing / apical junction assembly / morphogenesis of a polarized epithelium / Formation of the polybromo-BAF (pBAF) complex / structural constituent of postsynaptic actin cytoskeleton / Formation of annular gap junctions / Formation of the dystrophin-glycoprotein complex (DGC) / host-mediated activation of viral process / Gap junction degradation / Formation of the non-canonical BAF (ncBAF) complex / GBAF complex / regulation of G0 to G1 transition / protein localization to adherens junction / positive regulation of synaptic plasticity / Cell-extracellular matrix interactions / regulation of dendritic spine morphogenesis / establishment of spindle localization / dense body / negative regulation of cell adhesion / DNA alkylation repair / Folding of actin by CCT/TriC / Tat protein binding / regulation of ventricular cardiac muscle cell membrane repolarization / negative regulation of cell motility / actin filament depolymerization / postsynaptic actin cytoskeleton / RHO GTPases Activate ROCKs / RSC-type complex / negative regulation of cell size / Regulation of CDH1 Function / cellular response to interleukin-6 / neutrophil mediated immunity / regulation of double-strand break repair / regulation of nucleotide-excision repair / podosome / Prefoldin mediated transfer of substrate to CCT/TriC / regulation of cell morphogenesis / Adherens junctions interactions / RHOF GTPase cycle / adherens junction assembly / locomotion / negative regulation of dendritic spine maintenance / apical protein localization / cell projection organization / Sensory processing of sound by outer hair cells of the cochlea / platelet formation / Interaction between L1 and Ankyrins / regulation of mitotic metaphase/anaphase transition / SWI/SNF complex / tight junction / positive regulation of cell motility / Sensory processing of sound by inner hair cells of the cochlea / positive regulation of T cell differentiation / neural crest cell migration / sarcomere organization / apical junction complex / cortical actin cytoskeleton / phosphatidylinositol bisphosphate binding / cellular response to insulin-like growth factor stimulus / positive regulation of double-strand break repair / maintenance of blood-brain barrier / establishment of cell polarity / regulation of norepinephrine uptake / transporter regulator activity / positive regulation of dendritic spine development 類似検索 - 分子機能 | |||||||||||||||
| 生物種 | Homo sapiens (ヒト) | |||||||||||||||
| 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: 2.76 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. | |||||||||||||||
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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 | 9qfq.cif.gz | 768.5 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9qfq.ent.gz | 503.9 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9qfq.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/qf/9qfq ftp://data.pdbj.org/pub/pdb/validation_reports/qf/9qfq | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 53121MC ![]() 9qewC ![]() 9qeyC ![]() 9qf2C ![]() 9qfbC ![]() 9qfdC ![]() 9qfeC ![]() 9qfgC ![]() 9qfjC ![]() 9qfkC ![]() 9qfoC ![]() 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: 18532.531 Da / 分子数: 5 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CFL1, CFL / 発現宿主: ![]() #2: タンパク質 | | 分子量: 86760.906 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Human Actin interacting protein-1 (AIP1) with a C-terminal SNAP tag,Human Actin interacting protein-1 (AIP1) with a C-terminal SNAP tag 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: WDR1, MGMT / 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: O75083, UniProt: P16455, methylated-DNA-[protein]-cysteine S-methyltransferase #3: タンパク質 | 分子量: 41632.422 Da / 分子数: 5 / 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#4: 化合物 | ChemComp-MG / #5: 化合物 | ChemComp-ADP / 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: 単粒子再構成法 |
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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, 0.015% Tween20) | |||||||||||||||||||||||||||||||||||
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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: GOLD / 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 / 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: 71.7 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: 23082 |
| 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: Data were collected using a 300 kV Titan Krios G2 microscope (Thermo Fisher Scientific) equipped with 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 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 3916837 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.76 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 127213 / 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 / 詳細: Phenix real space refinement | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 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: 71.45 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