登録情報 データベース : EMDB / ID : EMD-16850 ダウンロードとリンクタイトル Cryo-EM structure of actomyosin-5a-S1 with the full-length lever (nucleotide free, class D) マップデータDeepEMhancer post-processed map 詳細 試料複合体 : Myosin-5a bound to F-actin複合体 : Actin, alpha skeletal muscleタンパク質・ペプチド : Actin, alpha skeletal muscle複合体 : Unconventional myosin-Va with calmodulin-1 boundタンパク質・ペプチド : Unconventional myosin-Va複合体 : Calmodulin-1 詳細 キーワード myosin / cytoskeletal motor / myosin-va / myo5a / myosin-5a / S1 / rigor / nucleotide free / apo / lever / 6IQ / actomyosin / actomyosin-5a / actin / actomyosin-va / actin bound / 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
establishment of endoplasmic reticulum localization to postsynapse / regulation of postsynaptic cytosolic calcium ion concentration / 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 / melanosome localization / endoplasmic reticulum localization / Reduction of cytosolic Ca++ levels ... establishment of endoplasmic reticulum localization to postsynapse / regulation of postsynaptic cytosolic calcium ion concentration / 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 / melanosome localization / endoplasmic reticulum localization / Reduction of cytosolic Ca++ levels / 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 / Ion transport by P-type ATPases / Calcineurin activates NFAT / Unblocking of NMDA receptors, glutamate binding and activation / locomotion involved in locomotory behavior / Protein methylation / melanin metabolic process / RAF activation / VEGFR2 mediated vascular permeability / vesicle transport along actin filament / RAS processing / unconventional myosin complex / insulin-responsive compartment / FCERI mediated Ca+2 mobilization / Ca2+ pathway / RHO GTPases activate IQGAPs / Extra-nuclear estrogen signaling / RAF/MAP kinase cascade / PKA activation / developmental pigmentation / melanosome transport / secretory granule localization / Smooth Muscle Contraction / Regulation of MITF-M-dependent genes involved in pigmentation / Regulation of actin dynamics for phagocytic cup formation / actin filament-based movement / melanin biosynthetic process / hair follicle maturation / Platelet degranulation / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / melanocyte differentiation / actomyosin / Stimuli-sensing channels / Ion homeostasis / long-chain fatty acid biosynthetic process / myosin complex / insulin secretion / odontogenesis / intermediate filament / cytoskeletal motor activator activity / organelle localization by membrane tethering / pigmentation / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / microfilament motor activity / myosin heavy chain binding / presynaptic endocytosis / regulation of cardiac muscle cell action potential / tropomyosin binding / negative regulation of ryanodine-sensitive calcium-release channel activity / troponin I binding / filamentous actin / exocytosis / calcineurin-mediated signaling / mesenchyme migration / actin filament bundle / cytoskeletal motor activity / actin filament bundle assembly / skeletal muscle myofibril / striated muscle thin filament / protein phosphatase activator activity / adenylate cyclase binding / regulation of ryanodine-sensitive calcium-release channel activity / skeletal muscle thin filament assembly / actin monomer binding / catalytic complex / photoreceptor outer segment / detection of calcium ion / regulation of cardiac muscle contraction / smooth endoplasmic reticulum / calcium channel inhibitor activity / cellular response to interferon-beta / stress fiber / skeletal muscle fiber development / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / vesicle-mediated transport / titin binding / voltage-gated potassium channel complex / actin filament polymerization / sperm midpiece / myelination / calcium channel complex 類似検索 - 分子機能 Myosin 5a, cargo-binding domain / Class V myosin, motor domain / Dilute domain / DIL domain / Dilute domain profile. / DIL / IQ calmodulin-binding motif / Myosin, N-terminal, SH3-like / Myosin N-terminal SH3-like domain profile. / Short calmodulin-binding motif containing conserved Ile and Gln residues. ... Myosin 5a, cargo-binding domain / Class V myosin, motor domain / Dilute domain / DIL domain / Dilute domain profile. / DIL / IQ calmodulin-binding motif / Myosin, N-terminal, SH3-like / Myosin N-terminal SH3-like domain profile. / Short calmodulin-binding motif containing conserved Ile and Gln residues. / IQ motif, EF-hand binding site / Myosin head, motor domain / Myosin head (motor domain) / Myosin motor domain profile. / Myosin. Large ATPases. / IQ motif profile. / Kinesin motor domain superfamily / Actins signature 1. / : / Actin, conserved site / Actins signature 2. / Actin/actin-like conserved site / Actins and actin-related proteins signature. / Actin / Actin family / Actin / EF-hand domain pair / EF-hand, calcium binding motif / ATPase, nucleotide binding domain / 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 Calmodulin-1 / Actin, alpha skeletal muscle / Unconventional myosin-Va 類似検索 - 構成要素生物種 Oryctolagus cuniculus (ウサギ) / 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 : 7.5 Å 詳細 データ登録者Gravett MSC / Klebl DP / Harlen OG / Read DJ / Harris SA / Muench SP / Peckham M 資金援助 英国, 5件 詳細 詳細を隠すOrganization Grant number 国 Wellcome Trust 102174/B/13/Z 英国 Wellcome Trust 223125/Z/21/Z 英国 Wellcome Trust 108466/Z/15/Z 英国 Engineering and Physical Sciences Research Council EP/T022167/1 英国 Engineering and Physical Sciences Research Council EP/R013012 英国
引用ジャーナル : Structure / 年 : 2024タイトル : Exploiting cryo-EM structures of actomyosin-5a to reveal the physical properties of its lever.著者 : Molly S C Gravett / David P Klebl / Oliver G Harlen / Daniel J Read / Stephen P Muench / Sarah A Harris / Michelle Peckham / 要旨 : Myosin 5a (Myo5a) is a dimeric processive motor protein that transports cellular cargos along filamentous actin (F-actin). Its long lever is responsible for its large power-stroke, step size, and ... Myosin 5a (Myo5a) is a dimeric processive motor protein that transports cellular cargos along filamentous actin (F-actin). Its long lever is responsible for its large power-stroke, step size, and load-bearing ability. Little is known about the levers' structure and physical properties, and how they contribute to walking mechanics. Using cryoelectron microscopy (cryo-EM) and molecular dynamics (MD) simulations, we resolved the structure of monomeric Myo5a, comprising the motor domain and full-length lever, bound to F-actin. The range of its lever conformations revealed its physical properties, how stiffness varies along its length and predicts a large, 35 nm, working stroke. Thus, the newly released trail head in a dimeric Myo5a would only need to perform a small diffusive search for its new binding site on F-actin, and stress would only be generated across the dimer once phosphate is released from the lead head, revealing new insight into the walking behavior of Myo5a. 履歴 登録 2023年3月14日 - ヘッダ(付随情報) 公開 2024年9月25日 - マップ公開 2024年9月25日 - 更新 2025年4月9日 - 現状 2025年4月9日 処理サイト : PDBe / 状態 : 公開
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