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基本情報
登録情報 | データベース: PDB / ID: 8dnf | ||||||
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タイトル | Cryo-EM structure of nonmuscle gamma-actin | ||||||
![]() | Actin, cytoplasmic 2, N-terminally processed | ||||||
![]() | STRUCTURAL PROTEIN / cytoskeleton | ||||||
機能・相同性 | ![]() basal body patch / tight junction assembly / protein localization to bicellular tight junction / profilin binding / regulation of transepithelial transport / morphogenesis of a polarized epithelium / structural constituent of postsynaptic actin cytoskeleton / Formation of the dystrophin-glycoprotein complex (DGC) / Formation of annular gap junctions / Gap junction degradation ...basal body patch / tight junction assembly / protein localization to bicellular tight junction / profilin binding / regulation of transepithelial transport / morphogenesis of a polarized epithelium / structural constituent of postsynaptic actin cytoskeleton / Formation of the dystrophin-glycoprotein complex (DGC) / Formation of annular gap junctions / Gap junction degradation / Cell-extracellular matrix interactions / dense body / regulation of stress fiber assembly / Adherens junctions interactions / Sensory processing of sound by outer hair cells of the cochlea / Interaction between L1 and Ankyrins / Sensory processing of sound by inner hair cells of the cochlea / sarcomere organization / regulation of focal adhesion assembly / apical junction complex / positive regulation of wound healing / maintenance of blood-brain barrier / NuA4 histone acetyltransferase complex / filamentous actin / myofibril / Recycling pathway of L1 / regulation of synaptic vesicle endocytosis / EPH-ephrin mediated repulsion of cells / RHO GTPases Activate WASPs and WAVEs / RHO GTPases activate IQGAPs / RHOBTB2 GTPase cycle / phagocytic vesicle / EPHB-mediated forward signaling / calyx of Held / axonogenesis / Translocation of SLC2A4 (GLUT4) to the plasma membrane / actin filament / FCGR3A-mediated phagocytosis / cell motility / RHO GTPases Activate Formins / Signaling by high-kinase activity BRAF mutants / MAP2K and MAPK activation / Schaffer collateral - CA1 synapse / 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 / Regulation of actin dynamics for phagocytic cup formation / structural constituent of cytoskeleton / cellular response to type II interferon / VEGFA-VEGFR2 Pathway / platelet aggregation / 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 / Signaling by BRAF and RAF1 fusions / cell-cell junction / actin cytoskeleton / Clathrin-mediated endocytosis / angiogenesis / blood microparticle / cytoskeleton / hydrolase activity / positive regulation of cell migration / axon / focal adhesion / synapse / ubiquitin protein ligase binding / positive regulation of gene expression / protein kinase binding / extracellular space / extracellular exosome / ATP binding / identical protein binding / nucleus / membrane / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
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: 3.38 Å | ||||||
![]() | Arora, A.S. / Huang, H.L. / Heissler, S.M. / Chinthalapudi, K. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into actin isoforms. 著者: Amandeep S Arora / Hsiang-Ling Huang / Ramanpreet Singh / Yoshie Narui / Andrejus Suchenko / Tomoyuki Hatano / Sarah M Heissler / Mohan K Balasubramanian / Krishna Chinthalapudi / ![]() ![]() 要旨: Actin isoforms organize into distinct networks that are essential for the normal function of eukaryotic cells. Despite a high level of sequence and structure conservation, subtle differences in their ...Actin isoforms organize into distinct networks that are essential for the normal function of eukaryotic cells. Despite a high level of sequence and structure conservation, subtle differences in their design principles determine the interaction with myosin motors and actin-binding proteins. Therefore, identifying how the structure of actin isoforms relates to function is important for our understanding of normal cytoskeletal physiology. Here, we report the high-resolution structures of filamentous skeletal muscle α-actin (3.37 Å), cardiac muscle α-actin (3.07 Å), ß-actin (2.99 Å), and γ-actin (3.38 Å) in the Mg·ADP state with their native post-translational modifications. The structures revealed isoform-specific conformations of the N-terminus that shift closer to the filament surface upon myosin binding, thereby establishing isoform-specific interfaces. Collectively, the structures of single-isotype, post-translationally modified bare skeletal muscle α-actin, cardiac muscle α-actin, ß-actin, and γ-actin reveal general principles, similarities, and differences between isoforms. They complement the repertoire of known actin structures and allow for a comprehensive understanding of in vitro and in vivo functions of actin isoforms. | ||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 291.8 KB | 表示 | ![]() |
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PDB形式 | ![]() | 239.8 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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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: 41746.625 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #2: 化合物 | ChemComp-MG / #3: 化合物 | ChemComp-ADP / 研究の焦点であるリガンドがあるか | 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
構成要素 | 名称: actin / タイプ: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1 / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7 |
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 / グリッドのタイプ: C-flat |
急速凍結 | 装置: LEICA EM GP / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 298 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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 81000 X / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 300 nm / アライメント法: ZEMLIN TABLEAU |
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 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: 2952 |
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: 20 eV / 球面収差補正装置: Cs-corrected microscope |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.20.1_4487: / 分類: 精密化 | ||||||||||||||||||||||||||||||
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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 | 詳細: Single Particle | ||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.38 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 1009372 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||
原子モデル構築 | B value: 201 / プロトコル: FLEXIBLE FIT / 空間: REAL | ||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 6DJO PDB chain-ID: A | ||||||||||||||||||||||||||||||
拘束条件 |
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