+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-1201 | |||||||||
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タイトル | Three-dimensional structure of the myosin V inhibited state by cryoelectron tomography. | |||||||||
マップデータ | This the 3-D average map of myosin-V in "off" state | |||||||||
試料 |
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機能・相同性 | 機能・相同性情報 CaMK IV-mediated phosphorylation of CREB / Cam-PDE 1 activation / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Glycogen breakdown (glycogenolysis) / Activation of RAC1 downstream of NMDARs / Reduction of cytosolic Ca++ levels / Sodium/Calcium exchangers / Activation of Ca-permeable Kainate Receptor / CLEC7A (Dectin-1) induces NFAT activation / Synthesis of IP3 and IP4 in the cytosol ...CaMK IV-mediated phosphorylation of CREB / Cam-PDE 1 activation / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Glycogen breakdown (glycogenolysis) / Activation of RAC1 downstream of NMDARs / Reduction of cytosolic Ca++ levels / Sodium/Calcium exchangers / Activation of Ca-permeable Kainate Receptor / CLEC7A (Dectin-1) induces NFAT activation / Synthesis of IP3 and IP4 in the cytosol / RHO GTPases activate PAKs / Calmodulin induced events / Inactivation, recovery and regulation of the phototransduction cascade / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / Calcineurin activates NFAT / eNOS activation / Ion transport by P-type ATPases / Unblocking of NMDA receptors, glutamate binding and activation / Protein methylation / RAF activation / VEGFR2 mediated vascular permeability / RAS processing / minus-end directed microfilament motor activity / negative regulation of calcium ion transmembrane transporter activity / Ca2+ pathway / presynaptic endocytosis / FCERI mediated Ca+2 mobilization / Smooth Muscle Contraction / Extra-nuclear estrogen signaling / insulin-responsive compartment / RHO GTPases activate IQGAPs / RAF/MAP kinase cascade / PKA activation / regulation of response to tumor cell / positive regulation of autophagic cell death / DAPK1-calmodulin complex / vesicle transport along actin filament / Platelet degranulation / : / establishment of protein localization to mitochondrial membrane / Stimuli-sensing channels / Ion homeostasis / type 3 metabotropic glutamate receptor binding / myosin complex / regulation of synaptic vesicle endocytosis / negative regulation of high voltage-gated calcium channel activity / regulation of synaptic vesicle exocytosis / positive regulation of cyclic-nucleotide phosphodiesterase activity / organelle localization by membrane tethering / negative regulation of calcium ion export across plasma membrane / response to corticosterone / microfilament motor activity / autophagosome membrane docking / mitochondrion-endoplasmic reticulum membrane tethering / regulation of cardiac muscle cell action potential / positive regulation of ryanodine-sensitive calcium-release channel activity / nitric-oxide synthase binding / negative regulation of ryanodine-sensitive calcium-release channel activity / filamentous actin / protein phosphatase activator activity / : / adenylate cyclase binding / calyx of Held / catalytic complex / detection of calcium ion / regulation of cardiac muscle contraction / regulation of ryanodine-sensitive calcium-release channel activity / calcium channel inhibitor activity / cellular response to interferon-beta / phosphatidylinositol 3-kinase binding / voltage-gated potassium channel complex / activation of adenylate cyclase activity / enzyme regulator activity / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / : / vesicle-mediated transport / titin binding / regulation of calcium-mediated signaling / sperm midpiece / calcium channel complex / potassium ion transmembrane transport / nitric-oxide synthase regulator activity / adenylate cyclase activator activity / response to amphetamine / regulation of heart rate / sarcomere / protein serine/threonine kinase activator activity / positive regulation of nitric-oxide synthase activity / regulation of cytokinesis / actin filament organization / protein localization to plasma membrane / spindle microtubule / mitochondrial membrane / positive regulation of receptor signaling pathway via JAK-STAT / calcium-mediated signaling / cellular response to type II interferon / cellular response to insulin stimulus / spindle pole / synaptic vesicle membrane / response to calcium ion 類似検索 - 分子機能 | |||||||||
生物種 | Mus musculus (ハツカネズミ) | |||||||||
手法 | サブトモグラム平均法 / クライオ電子顕微鏡法 / ネガティブ染色法 / 解像度: 24.0 Å | |||||||||
データ登録者 | Liu J / Taylor DW / Krementsova EB / Trybus KM / Taylor KA | |||||||||
引用 | ジャーナル: Nature / 年: 2006 タイトル: Three-dimensional structure of the myosin V inhibited state by cryoelectron tomography. 著者: Jun Liu / Dianne W Taylor / Elena B Krementsova / Kathleen M Trybus / Kenneth A Taylor / 要旨: Unconventional myosin V (myoV) is an actin-based molecular motor that has a key function in organelle and mRNA transport, as well as in membrane trafficking. MyoV was the first member of the myosin ...Unconventional myosin V (myoV) is an actin-based molecular motor that has a key function in organelle and mRNA transport, as well as in membrane trafficking. MyoV was the first member of the myosin superfamily shown to be processive, meaning that a single motor protein can 'walk' hand-over-hand along an actin filament for many steps before detaching. Full-length myoV has a low actin-activated MgATPase activity at low [Ca2+], whereas expressed constructs lacking the cargo-binding domain have a high activity regardless of [Ca2+] (refs 5-7). Hydrodynamic data and electron micrographs indicate that the active state is extended, whereas the inactive state is compact. Here we show the first three-dimensional structure of the myoV inactive state. Each myoV molecule consists of two heads that contain an amino-terminal motor domain followed by a lever arm that binds six calmodulins. The heads are followed by a coiled-coil dimerization domain (S2) and a carboxy-terminal globular cargo-binding domain. In the inactive structure, bending of myoV at the head-S2 junction places the cargo-binding domain near the motor domain's ATP-binding pocket, indicating that ATPase inhibition might occur through decreased rates of nucleotide exchange. The actin-binding interfaces are unobstructed, and the lever arm is oriented in a position typical of strong actin-binding states. This structure indicates that motor recycling after cargo delivery might occur through transport on actively treadmilling actin filaments rather than by diffusion. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_1201.map.gz | 3.5 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-1201-v30.xml emd-1201.xml | 11 KB 11 KB | 表示 表示 | EMDBヘッダ |
画像 | 1201.gif | 58.8 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-1201 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-1201 | 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_1201.map.gz / 形式: CCP4 / 大きさ: 7.2 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | This the 3-D average map of myosin-V in "off" state | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 これらの図は立方格子座標系で作成されたものです | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 5.56 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
-試料の構成要素
-全体 : MYOSIN V
全体 | 名称: MYOSIN V |
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要素 |
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-超分子 #1000: MYOSIN V
超分子 | 名称: MYOSIN V / タイプ: sample / ID: 1000 / Number unique components: 1 |
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分子量 | 実験値: 400 KDa / 理論値: 400 KDa |
-分子 #1: Myosin-V
分子 | 名称: Myosin-V / タイプ: protein_or_peptide / ID: 1 / Name.synonym: MYOV / 詳細: expressed full lengh myosin-V / コピー数: 2 / 集合状態: Dimer / 組換発現: Yes |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) / 別称: mouse |
分子量 | 実験値: 400 KDa / 理論値: 400 KDa |
組換発現 | 生物種: Sf9 cells |
-実験情報
-構造解析
手法 | ネガティブ染色法, クライオ電子顕微鏡法 |
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解析 | サブトモグラム平均法 |
試料の集合状態 | 2D array |
-試料調製
緩衝液 | 詳細: 20 mM Na2HPO4, 80-100 mM NaCl, 2 mM MgCl2, 1 mM ADP, 1 mM EGTA |
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染色 | タイプ: NEGATIVE 詳細: MyoV 2-D arrays were recovered from the lipid monolayer |
グリッド | 詳細: 200 mesh copper grids covered with a reticulated carbon film. |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 90 % / チャンバー内温度: 277 K / 装置: HOMEMADE PLUNGER / 詳細: Vitrification instrument: in house plunger / 手法: Blot for 3 seconds before plunging |
詳細 | crystals grown on a lipid-monolayer |
-電子顕微鏡法
顕微鏡 | FEI/PHILIPS CM300FEG/ST |
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温度 | 平均: 103 K |
日付 | 2004年2月1日 |
撮影 | カテゴリ: CCD フィルム・検出器のモデル: TVIPS TEMCAM-F224 (2k x 2k) デジタル化 - サンプリング間隔: 24 µm / 実像数: 360 / 平均電子線量: 30 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 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): 12.0 µm / 最小 デフォーカス(公称値): 4.0 µm / 倍率(公称値): 24000 |
試料ステージ | 試料ホルダー: Eucentric / 試料ホルダーモデル: GATAN LIQUID NITROGEN / Tilt series - Axis1 - Min angle: 0 ° / Tilt series - Axis1 - Max angle: 70 ° |
-画像解析
最終 再構成 | アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 24.0 Å / 解像度の算出法: FSC 0.5 CUT-OFF / ソフトウェア - 名称: protomo |
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CTF補正 | 詳細: focus gradient correction |
結晶パラメータ | 単位格子 - A: 653 Å / 単位格子 - B: 653 Å / 単位格子 - γ: 120 ° / 単位格子 - α: 90.0 ° / 単位格子 - β: 90.0 ° / 面群: P 6 |
-原子モデル構築 1
ソフトウェア | 名称: Situs and NMFF |
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詳細 | Protocol: Rigid body and Normal Mode Flexible. Start with Rigid body docking by using SITUS and refine with NMFF |
精密化 | 空間: REAL / プロトコル: FLEXIBLE FIT / 当てはまり具合の基準: Correlation |
得られたモデル | PDB-2dfs: |