登録情報 データベース : EMDB / ID : EMD-37260 ダウンロードとリンクタイトル Cryo-EM structure of Myosin VI in the autoinhibited state (without SAH-extension density) マップデータcryo-EM map of autoinhibited MyoVI without SAH-extension 詳細 試料複合体 : Complex of Myosin VI and Calmodulin複合体 : myosin VIタンパク質・ペプチド : Unconventional myosin-VI複合体 : Calmodulinリガンド : CALCIUM IONリガンド : ADENOSINE-5'-DIPHOSPHATEリガンド : MAGNESIUM IONリガンド : PHOSPHATE ION 詳細 キーワード myosin VI / autoinhibition / intracellular transport / MOTOR PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
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 / Sodium/Calcium exchangers / Activation of Ca-permeable Kainate Receptor / Synthesis of IP3 and IP4 in the cytosol / CLEC7A (Dectin-1) induces NFAT activation / RHO GTPases activate PAKs ... 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 / Sodium/Calcium exchangers / Activation of Ca-permeable Kainate Receptor / Synthesis of IP3 and IP4 in the cytosol / CLEC7A (Dectin-1) induces NFAT activation / RHO GTPases activate PAKs / Calmodulin induced events / Inactivation, recovery and regulation of the phototransduction cascade / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / eNOS activation / regulation of secretion / Calcineurin activates NFAT / Reduction of cytosolic Ca++ levels / Unblocking of NMDA receptors, glutamate binding and activation / Protein methylation / Ion transport by P-type ATPases / RAF activation / minus-end directed microfilament motor activity / VEGFR2 mediated vascular permeability / RAS processing / unconventional myosin complex / Ca2+ pathway / RHO GTPases activate IQGAPs / Extra-nuclear estrogen signaling / FCERI mediated Ca+2 mobilization / RAF/MAP kinase cascade / PKA activation / inner ear auditory receptor cell differentiation / Smooth Muscle Contraction / actin filament-based movement / Platelet degranulation / clathrin-coated vesicle membrane / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Stimuli-sensing channels / Gap junction degradation / Trafficking of AMPA receptors / establishment of protein localization to mitochondrial membrane / Ion homeostasis / type 3 metabotropic glutamate receptor binding / RHOBTB1 GTPase cycle / inner ear morphogenesis / response to corticosterone / negative regulation of ryanodine-sensitive calcium-release channel activity / organelle localization by membrane tethering / microfilament motor activity / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / regulation of cardiac muscle cell action potential / nitric-oxide synthase binding / presynaptic endocytosis / regulation of synaptic vesicle exocytosis / microvillus / filamentous actin / calcineurin-mediated signaling / cytoskeletal motor activity / RHOU GTPase cycle / regulation of ryanodine-sensitive calcium-release channel activity / protein phosphatase activator activity / adenylate cyclase binding / endocytic vesicle / catalytic complex / regulation of synaptic vesicle endocytosis / detection of calcium ion / regulation of cardiac muscle contraction / postsynaptic cytosol / RHOBTB2 GTPase cycle / cellular response to interferon-beta / calcium channel inhibitor activity / phosphatidylinositol 3-kinase binding / presynaptic cytosol / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / titin binding / sperm midpiece / ruffle / clathrin-coated pit / voltage-gated potassium channel complex / calcium channel complex / regulation of heart rate / calyx of Held / autophagosome / actin filament organization / response to amphetamine / adenylate cyclase activator activity / sarcomere / regulation of cytokinesis / protein serine/threonine kinase activator activity / nitric-oxide synthase regulator activity / spindle microtubule / actin filament / positive regulation of receptor signaling pathway via JAK-STAT / filopodium / DNA damage response, signal transduction by p53 class mediator / intracellular protein transport / sensory perception of sound / ADP binding / mitochondrial membrane 類似検索 - 分子機能 Myosin VI, cargo binding domain / Class VI myosin, motor domain / : / Myosin VI cargo binding domain / Myosin VI, lever arm / Myosin S1 fragment, N-terminal / Myosin, N-terminal, SH3-like / Myosin N-terminal SH3-like domain profile. / Myosin head, motor domain / Myosin head (motor domain) ... Myosin VI, cargo binding domain / Class VI myosin, motor domain / : / Myosin VI cargo binding domain / Myosin VI, lever arm / Myosin S1 fragment, N-terminal / Myosin, N-terminal, SH3-like / Myosin N-terminal SH3-like domain profile. / Myosin head, motor domain / Myosin head (motor domain) / Myosin motor domain profile. / Myosin. Large ATPases. / Kinesin motor domain superfamily / : / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / EF-hand domain pair / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性生物種 Homo sapiens (ヒト) / Mus musculus (ハツカネズミ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.54 Å 詳細 データ登録者Niu F / Wei Z 資金援助 中国, 2件 詳細 詳細を隠すOrganization Grant number 国 National Natural Science Foundation of China (NSFC) 31971131 中国 National Natural Science Foundation of China (NSFC) 32170697 中国
引用ジャーナル : Nat Commun / 年 : 2024タイトル : Autoinhibition and activation of myosin VI revealed by its cryo-EM structure.著者 : Fengfeng Niu / Lingxuan Li / Lei Wang / Jinman Xiao / Shun Xu / Yong Liu / Leishu Lin / Cong Yu / Zhiyi Wei / 要旨 : Myosin VI is the only molecular motor that moves towards the minus end along actin filaments. Numerous cellular processes require myosin VI and tight regulations of the motor's activity. Defects in ... Myosin VI is the only molecular motor that moves towards the minus end along actin filaments. Numerous cellular processes require myosin VI and tight regulations of the motor's activity. Defects in myosin VI activity are known to cause genetic diseases such as deafness and cardiomyopathy. However, the molecular mechanisms underlying the activity regulation of myosin VI remain elusive. Here, we determined the high-resolution cryo-electron microscopic structure of myosin VI in its autoinhibited state. Our structure reveals that autoinhibited myosin VI adopts a compact, monomeric conformation via extensive interactions between the head and tail domains, orchestrated by an elongated single-α-helix region resembling a "spine". This autoinhibited structure effectively blocks cargo binding sites and represses the motor's ATPase activity. Certain cargo adaptors such as GIPC can release multiple inhibitory interactions and promote motor activity, pointing to a cargo-mediated activation of the processive motor. Moreover, our structural findings allow rationalization of disease-associated mutations in myosin VI. Beyond the activity regulation mechanisms of myosin VI, our study also sheds lights on how activities of other myosin motors such as myosin VII and X might be regulated. 履歴 登録 2023年8月23日 - ヘッダ(付随情報) 公開 2024年2月21日 - マップ公開 2024年2月21日 - 更新 2024年5月8日 - 現状 2024年5月8日 処理サイト : PDBj / 状態 : 公開
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