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基本情報
登録情報 | データベース: EMDB / ID: EMD-6451 | |||||||||
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タイトル | Unsharpened cryo-EM reconstruction of the GFP-E892-Vt-actin interface for difference map calculation | |||||||||
![]() | Unsharpened reconstruction of N-terminal GFP fusion to VT residues 892-1061 bound to actin for difference map calculation | |||||||||
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![]() | actin / vinculin / cell migration / adhesion / mechanosensation / cytoskeleton | |||||||||
機能・相同性 | ![]() muscle tendon junction / Platelet degranulation / Smooth Muscle Contraction / regulation of protein localization to adherens junction / outer dense plaque of desmosome / inner dense plaque of desmosome / podosome ring / terminal web / epithelial cell-cell adhesion / zonula adherens ...muscle tendon junction / Platelet degranulation / Smooth Muscle Contraction / regulation of protein localization to adherens junction / outer dense plaque of desmosome / inner dense plaque of desmosome / podosome ring / terminal web / epithelial cell-cell adhesion / zonula adherens / dystroglycan binding / MAP2K and MAPK activation / muscle alpha-actinin binding / alpha-catenin binding / fascia adherens / vinculin binding / cell-cell contact zone / apical junction assembly / costamere / regulation of establishment of endothelial barrier / adherens junction assembly / axon extension / protein localization to cell surface / lamellipodium assembly / regulation of focal adhesion assembly / cytoskeletal motor activator activity / myosin heavy chain binding / tropomyosin binding / troponin I binding / filamentous actin / alpha-actinin binding / mesenchyme migration / actin filament bundle / brush border / actin filament bundle assembly / skeletal muscle myofibril / striated muscle thin filament / skeletal muscle thin filament assembly / actin monomer binding / stress fiber / skeletal muscle fiber development / titin binding / actin filament polymerization / regulation of cell migration / Neutrophil degranulation / morphogenesis of an epithelium / cell projection / filopodium / adherens junction / actin filament / neuromuscular junction / sarcolemma / beta-catenin binding / 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 / Z disc / calcium-dependent protein binding / actin filament binding / cell-cell junction / lamellipodium / actin cytoskeleton / cell body / scaffold protein binding / cytoskeleton / mitochondrial inner membrane / hydrolase activity / cell adhesion / cadherin binding / protein domain specific binding / focal adhesion / ubiquitin protein ligase binding / calcium ion binding / positive regulation of gene expression / structural molecule activity / magnesium ion binding / protein homodimerization activity / protein-containing complex / ATP binding / identical protein binding / plasma membrane / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() ![]() ![]() | |||||||||
手法 | らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 16.4 Å | |||||||||
![]() | Kim LY / Thompson PM / Lee HT / Pershad M / Campbell SL / Alushin GM | |||||||||
![]() | ![]() タイトル: The Structural Basis of Actin Organization by Vinculin and Metavinculin. 著者: Laura Y Kim / Peter M Thompson / Hyunna T Lee / Mihir Pershad / Sharon L Campbell / Gregory M Alushin / ![]() 要旨: Vinculin is an essential adhesion protein that links membrane-bound integrin and cadherin receptors through their intracellular binding partners to filamentous actin, facilitating mechanotransduction. ...Vinculin is an essential adhesion protein that links membrane-bound integrin and cadherin receptors through their intracellular binding partners to filamentous actin, facilitating mechanotransduction. Here we present an 8.5-Å-resolution cryo-electron microscopy reconstruction and pseudo-atomic model of the vinculin tail (Vt) domain bound to F-actin. Upon actin engagement, the N-terminal "strap" and helix 1 are displaced from the Vt helical bundle to mediate actin bundling. We find that an analogous conformational change also occurs in the H1' helix of the tail domain of metavinculin (MVt) upon actin binding, a muscle-specific splice isoform that suppresses actin bundling by Vt. These data support a model in which metavinculin tunes the actin bundling activity of vinculin in a tissue-specific manner, providing a mechanistic framework for understanding metavinculin mutations associated with hereditary cardiomyopathies. | |||||||||
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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マップデータ | ![]() | 4 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 11.6 KB 11.6 KB | 表示 表示 | ![]() |
画像 | ![]() | 141 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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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 | Unsharpened reconstruction of N-terminal GFP fusion to VT residues 892-1061 bound to actin for difference map calculation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: 2.18 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 : GFP-E892-Vt bound to F-actin
全体 | 名称: GFP-E892-Vt bound to F-actin |
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要素 |
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-超分子 #1000: GFP-E892-Vt bound to F-actin
超分子 | 名称: GFP-E892-Vt bound to F-actin / タイプ: sample / ID: 1000 詳細: Helical filament with one vinculin tail domain bound per actin protomer 集合状態: One vinculin tail domain per actin protomer / Number unique components: 2 |
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-分子 #1: skeletal muscle actin
分子 | 名称: skeletal muscle actin / タイプ: protein_or_peptide / ID: 1 / Name.synonym: actin / 集合状態: helical filament / 組換発現: No / データベース: NCBI |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 41.8 KDa |
配列 | UniProtKB: Actin, alpha skeletal muscle |
-分子 #2: Vinculin tail domain, residues 892-1061
分子 | 名称: Vinculin tail domain, residues 892-1061 / タイプ: protein_or_peptide / ID: 2 / Name.synonym: GFP-E892-Vt / 詳細: N-terminal GFP fusion / 集合状態: helical / 組換発現: Yes |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 46 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | UniProtKB: Vinculin |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | らせん対称体再構成法 |
試料の集合状態 | filament |
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試料調製
濃度 | 0.0125 mg/mL |
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緩衝液 | pH: 7 / 詳細: 50 mM KCl, 1 mM MgCl2, 1mM EGTA, 10 mM imidazole |
グリッド | 詳細: 200 mesh 1.2 / 1.3 C-flat |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 90 % / 装置: LEICA EM GP 手法: 3 microliters of 0.3 micromolar actin was applied to the grid and incubated for 60 seconds at 25 degrees C. 3 microliters of 10 micromolar GFP-E892-Vt was then applied and incubated for 60 ...手法: 3 microliters of 0.3 micromolar actin was applied to the grid and incubated for 60 seconds at 25 degrees C. 3 microliters of 10 micromolar GFP-E892-Vt was then applied and incubated for 60 seconds. 3 microliters of solution was removed, then an additional 3 microliters of GFP-E892-Vt applied. After 60 seconds, 3 microliters of solution was removed, then the grid was blotted for 2 seconds before plunging. |
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電子顕微鏡法
顕微鏡 | FEI TECNAI 20 |
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アライメント法 | Legacy - 非点収差: Objective lens astigmatism was corrected at 100,000 times magnification. |
日付 | 2014年7月9日 |
撮影 | カテゴリ: CCD フィルム・検出器のモデル: GATAN ULTRASCAN 4000 (4k x 4k) 実像数: 212 / 平均電子線量: 25 e/Å2 |
電子線 | 加速電圧: 120 kV / 電子線源: ![]() |
電子光学系 | 倍率(補正後): 137615 / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.0 mm / 最大 デフォーカス(公称値): 3.0 µm / 最小 デフォーカス(公称値): 1.5 µm / 倍率(公称値): 100000 |
試料ステージ | 試料ホルダーモデル: GATAN LIQUID NITROGEN |
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画像解析
詳細 | Multi-model IHRSR was performed using EMAN2 / SPARX to select for bound segments, followed by single-model IHRSR with EMAN2 / SPARX and final reconstruction with FREALIGN (fixed helical parameters). |
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最終 再構成 | 想定した対称性 - らせんパラメータ - Δz: 27.82 Å 想定した対称性 - らせんパラメータ - ΔΦ: 166.77 ° 想定した対称性 - らせんパラメータ - 軸対称性: C1 (非対称) アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 16.4 Å / 解像度の算出法: OTHER ソフトウェア - 名称: CTFFIND3, EMAN2/SPARX, FREALIGN |
CTF補正 | 詳細: FREALIGN (per segment) |