+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-16889 | ||||||||||||
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タイトル | Cryo-EM structure of ADP-bound, filamentous beta-actin harboring the N111S mutation | ||||||||||||
マップデータ | Sharpened, local-resolution filtered cryo-EM density map of filamentous beta-actin harboring the N111S mutation. | ||||||||||||
試料 |
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キーワード | Actin filament / cytoskeletal protein / ATPase / STRUCTURAL PROTEIN | ||||||||||||
機能・相同性 | 機能・相同性情報 positive regulation of norepinephrine uptake / cellular response to cytochalasin B / regulation of transepithelial transport / morphogenesis of a polarized epithelium / bBAF complex / postsynaptic actin cytoskeleton organization / npBAF complex / protein localization to adherens junction / nBAF complex / brahma complex ...positive regulation of norepinephrine uptake / cellular response to cytochalasin B / regulation of transepithelial transport / morphogenesis of a polarized epithelium / bBAF complex / postsynaptic actin cytoskeleton organization / npBAF complex / protein localization to adherens junction / nBAF complex / brahma complex / Tat protein binding / postsynaptic actin cytoskeleton / structural constituent of postsynaptic actin cytoskeleton / GBAF complex / Formation of annular gap junctions / dense body / regulation of G0 to G1 transition / Gap junction degradation / Cell-extracellular matrix interactions / Folding of actin by CCT/TriC / apical protein localization / regulation of double-strand break repair / adherens junction assembly / regulation of nucleotide-excision repair / Prefoldin mediated transfer of substrate to CCT/TriC / RSC-type complex / RHOF GTPase cycle / Adherens junctions interactions / tight junction / Interaction between L1 and Ankyrins / Sensory processing of sound by outer hair cells of the cochlea / regulation of mitotic metaphase/anaphase transition / Sensory processing of sound by inner hair cells of the cochlea / SWI/SNF complex / regulation of norepinephrine uptake / regulation of synaptic vesicle endocytosis / positive regulation of double-strand break repair / apical junction complex / positive regulation of T cell differentiation / regulation of cyclin-dependent protein serine/threonine kinase activity / establishment or maintenance of cell polarity / maintenance of blood-brain barrier / cortical cytoskeleton / NuA4 histone acetyltransferase complex / positive regulation of stem cell population maintenance / nitric-oxide synthase binding / Regulation of MITF-M-dependent genes involved in pigmentation / regulation of G1/S transition of mitotic cell cycle / Recycling pathway of L1 / brush border / kinesin binding / negative regulation of cell differentiation / calyx of Held / positive regulation of double-strand break repair via homologous recombination / EPH-ephrin mediated repulsion of cells / regulation of protein localization to plasma membrane / RHO GTPases Activate WASPs and WAVEs / positive regulation of myoblast differentiation / RHO GTPases activate IQGAPs / EPHB-mediated forward signaling / substantia nigra development / axonogenesis / negative regulation of protein binding / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / cell motility / Translocation of SLC2A4 (GLUT4) to the plasma membrane / actin filament / RHO GTPases Activate Formins / positive regulation of cell differentiation / FCGR3A-mediated phagocytosis / adherens junction / regulation of transmembrane transporter activity / 加水分解酵素; 酸無水物に作用; 酸無水物に作用・細胞または細胞小器官の運動に関与 / Signaling by high-kinase activity BRAF mutants / DNA Damage Recognition in GG-NER / MAP2K and MAPK activation / tau protein binding / B-WICH complex positively regulates rRNA expression / Schaffer collateral - CA1 synapse / structural constituent of cytoskeleton / platelet aggregation / Regulation of actin dynamics for phagocytic cup formation / kinetochore / VEGFA-VEGFR2 Pathway / nuclear matrix / cytoplasmic ribonucleoprotein granule / Signaling by RAF1 mutants / Signaling by moderate kinase activity BRAF mutants / Paradoxical activation of RAF signaling by kinase inactive BRAF / Signaling downstream of RAS mutants / UCH proteinases / Signaling by BRAF and RAF1 fusions / nucleosome / cell-cell junction / actin cytoskeleton / lamellipodium / Clathrin-mediated endocytosis / presynapse / Factors involved in megakaryocyte development and platelet production / HATs acetylate histones 類似検索 - 分子機能 | ||||||||||||
生物種 | Homo sapiens (ヒト) | ||||||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.3 Å | ||||||||||||
データ登録者 | Oosterheert W / Blanc FEC / Roy A / Belyy A / Hofnagel O / Hummer G / Bieling P / Raunser S | ||||||||||||
資金援助 | ドイツ, European Union, 3件
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引用 | ジャーナル: Nat Struct Mol Biol / 年: 2023 タイトル: Molecular mechanisms of inorganic-phosphate release from the core and barbed end of actin filaments. 著者: Wout Oosterheert / Florian E C Blanc / Ankit Roy / Alexander Belyy / Micaela Boiero Sanders / Oliver Hofnagel / Gerhard Hummer / Peter Bieling / Stefan Raunser / 要旨: The release of inorganic phosphate (P) from actin filaments constitutes a key step in their regulated turnover, which is fundamental to many cellular functions. The mechanisms underlying P release ...The release of inorganic phosphate (P) from actin filaments constitutes a key step in their regulated turnover, which is fundamental to many cellular functions. The mechanisms underlying P release from the core and barbed end of actin filaments remain unclear. Here, using human and bovine actin isoforms, we combine cryo-EM with molecular-dynamics simulations and in vitro reconstitution to demonstrate how actin releases P through a 'molecular backdoor'. While constantly open at the barbed end, the backdoor is predominantly closed in filament-core subunits and opens only transiently through concerted amino acid rearrangements. This explains why P escapes rapidly from the filament end but slowly from internal subunits. In a nemaline-myopathy-associated actin variant, the backdoor is predominantly open in filament-core subunits, resulting in accelerated P release and filaments with drastically shortened ADP-P caps. Our results provide the molecular basis for P release from actin and exemplify how a disease-linked mutation distorts the nucleotide-state distribution and atomic structure of the filament. | ||||||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_16889.map.gz | 129.5 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-16889-v30.xml emd-16889.xml | 25.6 KB 25.6 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_16889_fsc.xml | 13.6 KB | 表示 | FSCデータファイル |
画像 | emd_16889.png | 89.7 KB | ||
マスクデータ | emd_16889_msk_1.map | 216 MB | マスクマップ | |
Filedesc metadata | emd-16889.cif.gz | 7.8 KB | ||
その他 | emd_16889_additional_1.map.gz emd_16889_half_map_1.map.gz emd_16889_half_map_2.map.gz | 168.6 MB 170.5 MB 170.5 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-16889 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-16889 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_16889_validation.pdf.gz | 780.4 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_16889_full_validation.pdf.gz | 779.9 KB | 表示 | |
XML形式データ | emd_16889_validation.xml.gz | 20.6 KB | 表示 | |
CIF形式データ | emd_16889_validation.cif.gz | 26.7 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-16889 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-16889 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_16889.map.gz / 形式: CCP4 / 大きさ: 216 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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注釈 | Sharpened, local-resolution filtered cryo-EM density map of filamentous beta-actin harboring the N111S mutation. | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 0.695 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-マスク #1
ファイル | emd_16889_msk_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-追加マップ: 3D refined, unsharpened cryo-EM density map of filamentous...
ファイル | emd_16889_additional_1.map | ||||||||||||
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注釈 | 3D refined, unsharpened cryo-EM density map of filamentous beta-actin harboring the N111S mutation. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Half map 1 of the refinement of filamentous...
ファイル | emd_16889_half_map_1.map | ||||||||||||
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注釈 | Half map 1 of the refinement of filamentous beta-actin harboring the N111S mutation. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Half map 2 of the refinement of filamentous...
ファイル | emd_16889_half_map_2.map | ||||||||||||
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注釈 | Half map 2 of the refinement of filamentous beta-actin harboring the N111S mutation. | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : Actin filament harboring the N111S mutation.
全体 | 名称: Actin filament harboring the N111S mutation. |
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要素 |
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-超分子 #1: Actin filament harboring the N111S mutation.
超分子 | 名称: Actin filament harboring the N111S mutation. / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 詳細: Beta-actin was expressed as fusion protein, with thymosin beta4 and a deca-His-tag fused to the actin C-terminus. During the purification, thymosin beta-4 and the deca-His-tag were removed. ...詳細: Beta-actin was expressed as fusion protein, with thymosin beta4 and a deca-His-tag fused to the actin C-terminus. During the purification, thymosin beta-4 and the deca-His-tag were removed. Actin was purified as monomer from insect cells. It was then polymerized into a filament in vitro. |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Actin, cytoplasmic 1, N-terminally processed
分子 | 名称: Actin, cytoplasmic 1, N-terminally processed / タイプ: protein_or_peptide / ID: 1 / コピー数: 5 / 光学異性体: LEVO |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 41.73659 KDa |
組換発現 | 生物種: Trichoplusia ni (イラクサキンウワバ) |
配列 | 文字列: MDDDIAALVV DNGSGMCKAG FAGDDAPRAV FPSIVGRPRH QGVMVGMGQK DSYVGDEAQS KRGILTLKYP IE(HIC)GIV TNW DDMEKIWHHT FYNELRVAPE EHPVLLTEAP LSPKANREKM TQIMFETFNT PAMYVAIQAV LSLYASGRTT GIVMDSG DG ...文字列: MDDDIAALVV DNGSGMCKAG FAGDDAPRAV FPSIVGRPRH QGVMVGMGQK DSYVGDEAQS KRGILTLKYP IE(HIC)GIV TNW DDMEKIWHHT FYNELRVAPE EHPVLLTEAP LSPKANREKM TQIMFETFNT PAMYVAIQAV LSLYASGRTT GIVMDSG DG VTHTVPIYEG YALPHAILRL DLAGRDLTDY LMKILTERGY SFTTTAEREI VRDIKEKLCY VALDFEQEMA TAASSSSL E KSYELPDGQV ITIGNERFRC PEALFQPSFL GMESAGIHET TFNSIMKCDV DIRKDLYANT VLSGGTTMYP GIADRMQKE ITALAPSTMK IKIIAPPERK YSVWIGGSIL ASLSTFQQMW ISKQEYDESG PSIVHRKCF UniProtKB: Actin, cytoplasmic 1 |
-分子 #2: ADENOSINE-5'-DIPHOSPHATE
分子 | 名称: ADENOSINE-5'-DIPHOSPHATE / タイプ: ligand / ID: 2 / コピー数: 5 / 式: ADP |
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分子量 | 理論値: 427.201 Da |
Chemical component information | ChemComp-ADP: |
-分子 #3: MAGNESIUM ION
分子 | 名称: MAGNESIUM ION / タイプ: ligand / ID: 3 / コピー数: 5 / 式: MG |
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分子量 | 理論値: 24.305 Da |
-分子 #4: water
分子 | 名称: water / タイプ: ligand / ID: 4 / コピー数: 616 / 式: HOH |
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分子量 | 理論値: 18.015 Da |
Chemical component information | ChemComp-HOH: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | filament |
-試料調製
濃度 | 2.5 mg/mL | ||||||||||||||||||
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緩衝液 | pH: 7.1 構成要素:
詳細: 1x KMEH (10 mM HEPES pH 7.1, 100 mM KCl, 2 mM MgCl2, 1 mM EGTA) supplemented with 0.02% Tween20 (v/v) | ||||||||||||||||||
グリッド | モデル: Quantifoil R2/1 / 材質: COPPER / メッシュ: 300 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 90 sec. | ||||||||||||||||||
凍結 | 凍結剤: ETHANE-PROPANE / チャンバー内湿度: 100 % / チャンバー内温度: 286 K / 装置: FEI VITROBOT MARK IV | ||||||||||||||||||
詳細 | Actin filaments were reconstituted by adding salt to monomeric actin. |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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特殊光学系 | 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 |
詳細 | Titan Krios G3 microscope was aligned using Sherpa (FEI). Data collected in superresolution mode. |
撮影 | 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: 9516 / 平均電子線量: 70.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | C2レンズ絞り径: 50.0 µm / 照射モード: SPOT SCAN / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 0.8 µm / 倍率(公称値): 130000 |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
+画像解析
-原子モデル構築 1
初期モデル | PDB ID: Chain - Source name: PDB / Chain - Initial model type: experimental model |
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詳細 | chain C of pdb 8A2T (including all water molecules) was fit in the central actin subunit of the density map. After substitution of all alpha-actin specific amino-acids to the corresponding beta-actin residues, introducing the N111S mutation, and further manual model building in Coot, the resulting model was fitted in four more actin subunits (chains A, B, D, E) in the density map. The filament was modeled as a pentamer to capture the full interaction interface of the central subunit with its four neighboring subunits. All water molecules were first manually built, inspected and adjusted in the central subunit, and were then copied to the other chains with non-crystallographic symmetry (NCS). Because the local resolution was worse at the periphery of the reconstruction, we removed water molecules that displayed poor corresponding cryo-EM density in the non-central actin chains. The model was refined in Phenix real-space refine with NCS restraints but without Ramachandran and rotamer restraints. |
精密化 | 空間: REAL / プロトコル: FLEXIBLE FIT |
得られたモデル | PDB-8oid: |