+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 6c1d | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| タイトル | High-Resolution Cryo-EM Structures of Actin-bound Myosin States Reveal the Mechanism of Myosin Force Sensing | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
要素 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
キーワード | STRUCTURAL PROTEIN / Mechanochemistry / Mechanobiology / Structural Biology / Cytoskeleton / Molecular Motor / Myosin-I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報post-Golgi vesicle-mediated transport / actin filament-based movement / myosin complex / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events / Reduction of cytosolic Ca++ levels / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde ...post-Golgi vesicle-mediated transport / actin filament-based movement / myosin complex / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events / Reduction of cytosolic Ca++ levels / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / cytoskeletal motor activator activity / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / CaMK IV-mediated phosphorylation of CREB / PKA activation / negative regulation of high voltage-gated calcium channel activity / Glycogen breakdown (glycogenolysis) / CLEC7A (Dectin-1) induces NFAT activation / Activation of RAC1 downstream of NMDARs / myosin heavy chain binding / microfilament motor activity / negative regulation of ryanodine-sensitive calcium-release channel activity / organelle localization by membrane tethering / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / tropomyosin binding / negative regulation of calcium ion export across plasma membrane / regulation of cardiac muscle cell action potential / presynaptic endocytosis / actin filament bundle / Synthesis of IP3 and IP4 in the cytosol / regulation of cell communication by electrical coupling involved in cardiac conduction / troponin I binding / filamentous actin / microvillus / mesenchyme migration / Phase 0 - rapid depolarisation / calcineurin-mediated signaling / Negative regulation of NMDA receptor-mediated neuronal transmission / Unblocking of NMDA receptors, glutamate binding and activation / phosphatidylinositol-3,4,5-trisphosphate binding / RHO GTPases activate PAKs / brush border / Ion transport by P-type ATPases / Uptake and function of anthrax toxins / cytoskeletal motor activity / actin filament bundle assembly / skeletal muscle myofibril / striated muscle thin filament / regulation of ryanodine-sensitive calcium-release channel activity / Long-term potentiation / protein phosphatase activator activity / skeletal muscle thin filament assembly / actin monomer binding / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / DARPP-32 events / Smooth Muscle Contraction / detection of calcium ion / catalytic complex / regulation of cardiac muscle contraction / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / cellular response to interferon-beta / Protein methylation / calcium channel inhibitor activity / Activation of AMPK downstream of NMDARs / presynaptic cytosol / skeletal muscle fiber development / stress fiber / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Ion homeostasis / eNOS activation / titin binding / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / sperm midpiece / regulation of calcium-mediated signaling / phosphatidylinositol-4,5-bisphosphate binding / actin filament polymerization / voltage-gated potassium channel complex / calcium channel complex / FCERI mediated Ca+2 mobilization / substantia nigra development / regulation of heart rate / Ras activation upon Ca2+ influx through NMDA receptor / FCGR3A-mediated IL10 synthesis / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / calyx of Held / actin filament organization / adenylate cyclase activator activity / sarcomere / VEGFR2 mediated cell proliferation / protein serine/threonine kinase activator activity / trans-Golgi network membrane / transferrin transport / VEGFR2 mediated vascular permeability / regulation of cytokinesis / cell periphery / spindle microtubule / calcium channel regulator activity 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 生物種 | ![]() ![]() unidentified (未定義) Amanita phalloides (タマゴテングタケ) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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: 3.2 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
データ登録者 | Mentes, A. / Huehn, A. / Liu, X. / Zwolak, A. / Dominguez, R. / Shuman, H. / Ostap, E.M. / Sindelar, C.V. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 資金援助 | 米国, 1件
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2018タイトル: High-resolution cryo-EM structures of actin-bound myosin states reveal the mechanism of myosin force sensing. 著者: Ahmet Mentes / Andrew Huehn / Xueqi Liu / Adam Zwolak / Roberto Dominguez / Henry Shuman / E Michael Ostap / Charles V Sindelar / ![]() 要旨: Myosins adjust their power outputs in response to mechanical loads in an isoform-dependent manner, resulting in their ability to dynamically adapt to a range of motile challenges. Here, we reveal the ...Myosins adjust their power outputs in response to mechanical loads in an isoform-dependent manner, resulting in their ability to dynamically adapt to a range of motile challenges. Here, we reveal the structural basis for force-sensing based on near-atomic resolution structures of one rigor and two ADP-bound states of myosin-IB (myo1b) bound to actin, determined by cryo-electron microscopy. The two ADP-bound states are separated by a 25° rotation of the lever. The lever of the first ADP state is rotated toward the pointed end of the actin filament and forms a previously unidentified interface with the N-terminal subdomain, which constitutes the upper half of the nucleotide-binding cleft. This pointed-end orientation of the lever blocks ADP release by preventing the N-terminal subdomain from the pivoting required to open the nucleotide binding site, thus revealing how myo1b is inhibited by mechanical loads that restrain lever rotation. The lever of the second ADP state adopts a rigor-like orientation, stabilized by class-specific elements of myo1b. We identify a role for this conformation as an intermediate in the ADP release pathway. Moreover, comparison of our structures with other myosins reveals structural diversity in the actomyosin binding site, and we reveal the high-resolution structure of actin-bound phalloidin, a potent stabilizer of filamentous actin. These results provide a framework to understand the spectrum of force-sensing capacities among the myosin superfamily. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 履歴 |
|
-
構造の表示
| ムービー |
ムービービューア |
|---|---|
| 構造ビューア | 分子: Molmil Jmol/JSmol |
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 6c1d.cif.gz | 472.5 KB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb6c1d.ent.gz | 382.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 6c1d.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
| 文書・要旨 | 6c1d_validation.pdf.gz | 1.7 MB | 表示 | wwPDB検証レポート |
|---|---|---|---|---|
| 文書・詳細版 | 6c1d_full_validation.pdf.gz | 1.7 MB | 表示 | |
| XML形式データ | 6c1d_validation.xml.gz | 84.3 KB | 表示 | |
| CIF形式データ | 6c1d_validation.cif.gz | 124.6 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/c1/6c1d ftp://data.pdbj.org/pub/pdb/validation_reports/c1/6c1d | HTTPS FTP |
-関連構造データ
-
リンク
-
集合体
| 登録構造単位 | ![]()
|
|---|---|
| 1 |
|
-
要素
-タンパク質 , 3種, 7分子 ABCDEPR
| #1: タンパク質 | 分子量: 41862.613 Da / 分子数: 5 / 由来タイプ: 天然 / 由来: (天然) ![]() #2: タンパク質 | | 分子量: 84143.930 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() #3: タンパク質 | | 分子量: 16721.350 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) unidentified (未定義) / 参照: UniProt: P0DP23*PLUS |
|---|
-タンパク質・ペプチド , 1種, 1分子 F
| #4: タンパク質・ペプチド | |
|---|
-非ポリマー , 2種, 12分子 


| #5: 化合物 | ChemComp-ADP / #6: 化合物 | ChemComp-MG / |
|---|
-詳細
| Has protein modification | Y |
|---|
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| EM実験 | 試料の集合状態: HELICAL ARRAY / 3次元再構成法: らせん対称体再構成法 |
-
試料調製
| 構成要素 | 名称: Complex of actin, myosin-1b, and calmodulin with ADP and phalloidin タイプ: COMPLEX / Entity ID: #1-#4 / 由来: MULTIPLE SOURCES |
|---|---|
| 分子量 | 実験値: NO |
| 由来(天然) | 生物種: unidentified (未定義) |
| 緩衝液 | pH: 7 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 凍結剤: ETHANE |
-
電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
|---|---|
| 顕微鏡 | モデル: FEI TITAN KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: SPOT SCAN |
| 電子レンズ | モード: BRIGHT FIELD |
| 撮影 | 平均露光時間: 11 sec. / 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-
解析
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
|---|---|
| らせん対称 | 回転角度/サブユニット: -167.4 ° / 軸方向距離/サブユニット: 27.5 Å / らせん対称軸の対称性: C1 |
| 3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 40400 詳細: Resolution estimated by post-processing in RELION using a mask with soft edges that included only the central subunit. 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 |
ムービー
コントローラー
万見について





Amanita phalloides (タマゴテングタケ)
米国, 1件
引用
UCSF Chimera











PDBj





























