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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: 9qfb | |||||||||||||||
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| タイトル | Cryo-EM structure of the fully Coronin-1B-decorated actin filament in the ADP state. | |||||||||||||||
要素 |
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キーワード | STRUCTURAL PROTEIN / actin / coronin / filament / cytoskeleton | |||||||||||||||
| 機能・相同性 | 機能・相同性情報actin filament branching / protein localization to cell leading edge / MGMT-mediated DNA damage reversal / Arp2/3 complex binding / methylated-DNA-[protein]-cysteine S-methyltransferase / methylated-DNA-[protein]-cysteine S-methyltransferase activity / negative regulation of smooth muscle cell chemotaxis / positive regulation of norepinephrine uptake / bBAF complex / regulation of Arp2/3 complex-mediated actin nucleation ...actin filament branching / protein localization to cell leading edge / MGMT-mediated DNA damage reversal / Arp2/3 complex binding / methylated-DNA-[protein]-cysteine S-methyltransferase / methylated-DNA-[protein]-cysteine S-methyltransferase activity / negative regulation of smooth muscle cell chemotaxis / positive regulation of norepinephrine uptake / bBAF complex / regulation of Arp2/3 complex-mediated actin nucleation / GBAF complex / endothelial cell chemotaxis / negative regulation of Arp2/3 complex-mediated actin nucleation / DNA-methyltransferase activity / brahma complex / cellular response to cytochalasin B / Formation of the embryonic stem cell BAF (esBAF) complex / npBAF complex / nBAF complex / regulation of transepithelial transport / Formation of the canonical BAF (cBAF) complex / morphogenesis of a polarized epithelium / Formation of annular gap junctions / Formation of the dystrophin-glycoprotein complex (DGC) / structural constituent of postsynaptic actin cytoskeleton / ruffle organization / Formation of the polybromo-BAF (pBAF) complex / Gap junction degradation / protein localization to adherens junction / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) / Formation of the non-canonical BAF (ncBAF) complex / Cell-extracellular matrix interactions / regulation of G0 to G1 transition / dense body / RSC-type complex / Folding of actin by CCT/TriC / Tat protein binding / postsynaptic actin cytoskeleton / Regulation of CDH1 Function / apical protein localization / regulation of double-strand break repair / positive regulation of lamellipodium morphogenesis / Prefoldin mediated transfer of substrate to CCT/TriC / Adherens junctions interactions / adherens junction assembly / RHOF GTPase cycle / regulation of nucleotide-excision repair / Sensory processing of sound by outer hair cells of the cochlea / tight junction / SWI/SNF complex / Sensory processing of sound by inner hair cells of the cochlea / regulation of mitotic metaphase/anaphase transition / Interaction between L1 and Ankyrins / positive regulation of T cell differentiation / apical junction complex / maintenance of blood-brain barrier / positive regulation of stem cell population maintenance / NuA4 histone acetyltransferase complex / regulation of norepinephrine uptake / transporter regulator activity / positive regulation of double-strand break repair / Recycling pathway of L1 / cell leading edge / cortical cytoskeleton / Regulation of MITF-M-dependent genes involved in pigmentation / establishment or maintenance of cell polarity / nitric-oxide synthase binding / brush border / actin filament bundle assembly / EPH-ephrin mediated repulsion of cells / regulation of synaptic vesicle endocytosis / negative regulation of cell differentiation / positive regulation of myoblast differentiation / RHO GTPases Activate WASPs and WAVEs / kinesin binding / cellular response to platelet-derived growth factor stimulus / regulation of protein localization to plasma membrane / RHO GTPases activate IQGAPs / positive regulation of double-strand break repair via homologous recombination / regulation of G1/S transition of mitotic cell cycle / axonogenesis / cytoskeleton organization / stress fiber / EPHB-mediated forward signaling / substantia nigra development / calyx of Held / nitric-oxide synthase regulator activity / actin filament organization / methyltransferase activity / wound healing / cell periphery / FCGR3A-mediated phagocytosis / cell motility / Translocation of SLC2A4 (GLUT4) to the plasma membrane / actin filament / adherens junction / positive regulation of cell differentiation / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / RHO GTPases Activate Formins / Signaling by high-kinase activity BRAF mutants 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: 2.74 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 | 9qfb.cif.gz | 1.2 MB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9qfb.ent.gz | 839.9 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9qfb.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/9qfb ftp://data.pdbj.org/pub/pdb/validation_reports/qf/9qfb | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 53105MC ![]() 9qewC ![]() 9qeyC ![]() 9qf2C ![]() 9qfdC ![]() 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: 74788.086 Da / 分子数: 7 / 由来タイプ: 組換発現 / 詳細: C-terminal SNAP-tag.,C-terminal SNAP-tag. / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CORO1B, 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: Q9BR76, UniProt: P16455, methylated-DNA-[protein]-cysteine S-methyltransferase #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
| 構成要素 |
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| 分子量 |
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| 由来(天然) |
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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, 0.01% 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: -163.8 ° / 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: 2.74 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 190940 / 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: 9QF2 Accession code: 9QF2 / 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: 81.14 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