登録情報 データベース : EMDB / ID : EMD-62874 ダウンロードとリンクタイトル Nucleotide-free kinesin-1 motor domain bound to the microtubule マップデータ 詳細 試料複合体 : Microtubule complex with Kinesin-1 motor domain複合体 : kinesin-1タンパク質・ペプチド : Kinesin-1 heavy chainタンパク質・ペプチド : Tubulin alpha-1B chainタンパク質・ペプチド : Tubulin beta chainリガンド : GUANOSINE-5'-TRIPHOSPHATEリガンド : MAGNESIUM ION 詳細 キーワード Kinesin / Microtubule / 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
regulation of modification of synapse structure, modulating synaptic transmission / plus-end-directed vesicle transport along microtubule / cytoplasm organization / anterograde dendritic transport of neurotransmitter receptor complex / cytolytic granule membrane / anterograde neuronal dense core vesicle transport / mitocytosis / retrograde neuronal dense core vesicle transport / anterograde axonal protein transport / vesicle transport along microtubule ... regulation of modification of synapse structure, modulating synaptic transmission / plus-end-directed vesicle transport along microtubule / cytoplasm organization / anterograde dendritic transport of neurotransmitter receptor complex / cytolytic granule membrane / anterograde neuronal dense core vesicle transport / mitocytosis / retrograde neuronal dense core vesicle transport / anterograde axonal protein transport / vesicle transport along microtubule / lysosome localization / positive regulation of potassium ion transport / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Resolution of Sister Chromatid Cohesion / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Mitotic Prometaphase / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / EML4 and NUDC in mitotic spindle formation / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / Aggrephagy / plus-end-directed microtubule motor activity / Kinesins / RHO GTPases activate KTN1 / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / kinesin complex / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / microtubule motor activity / COPI-mediated anterograde transport / centrosome localization / mitochondrion transport along microtubule / COPI-dependent Golgi-to-ER retrograde traffic / ciliary rootlet / microtubule-based movement / stress granule disassembly / natural killer cell mediated cytotoxicity / synaptic vesicle transport / Insulin processing / postsynaptic cytosol / phagocytic vesicle / axon cytoplasm / dendrite cytoplasm / MHC class II antigen presentation / axon guidance / regulation of membrane potential / positive regulation of synaptic transmission, GABAergic / positive regulation of protein localization to plasma membrane / structural constituent of cytoskeleton / cellular response to type II interferon / centriolar satellite / microtubule cytoskeleton organization / neuron migration / Signaling by ALK fusions and activated point mutants / mitotic cell cycle / microtubule cytoskeleton / microtubule binding / 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 / nuclear membrane / vesicle / microtubule / cadherin binding / GTPase activity / protein-containing complex binding / GTP binding / perinuclear region of cytoplasm / ATP hydrolysis activity / mitochondrion / ATP binding / metal ion binding / identical protein binding / membrane / cytosol / cytoplasm 類似検索 - 分子機能 Kinesin-like protein / Kinesin motor domain signature. / Kinesin motor domain, conserved site / Kinesin motor domain / Kinesin motor domain profile. / Kinesin motor, catalytic domain. ATPase. / Kinesin motor domain / Kinesin motor domain superfamily / Tubulin-beta mRNA autoregulation signal. / Alpha tubulin ... Kinesin-like protein / Kinesin motor domain signature. / Kinesin motor domain, conserved site / Kinesin motor domain / Kinesin motor domain profile. / Kinesin motor, catalytic domain. ATPase. / Kinesin motor domain / Kinesin motor domain superfamily / Tubulin-beta mRNA autoregulation signal. / Alpha tubulin / Beta tubulin, autoregulation binding site / Beta tubulin / Tubulin / Tubulin, C-terminal / Tubulin C-terminal domain / Tubulin, conserved site / Tubulin subunits alpha, beta, and gamma signature. / Tubulin/FtsZ family, C-terminal domain / Tubulin/FtsZ-like, C-terminal domain / Tubulin/FtsZ, C-terminal / Tubulin/FtsZ, 2-layer sandwich domain / Tubulin/FtsZ family, GTPase domain / Tubulin/FtsZ family, GTPase domain / Tubulin/FtsZ, GTPase domain / Tubulin/FtsZ, GTPase domain superfamily / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性 Tubulin beta chain / Kinesin-1 heavy chain / Tubulin alpha-1B chain 類似検索 - 構成要素生物種 Sus scrofa (ブタ) / Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.48 Å 詳細 データ登録者Makino T / Komori Y / Yanagisawa H / Tomishige M / Kikkawa M 資金援助 日本, 1件 詳細 詳細を隠すOrganization Grant number 国 Japan Society for the Promotion of Science (JSPS) 日本
引用ジャーナル : J Cell Biol / 年 : 2025タイトル : Tension-induced suppression of allosteric conformational changes coordinates kinesin-1 stepping.著者 : Tsukasa Makino / Ryo Kanada / Teppei Mori / Ken-Ichi Miyazono / Yuta Komori / Haruaki Yanagisawa / Shoji Takada / Masaru Tanokura / Masahide Kikkawa / Michio Tomishige / 要旨 : Kinesin-1 walks along microtubules by alternating ATP hydrolysis and movement of its two motor domains ("head"). The detached head preferentially binds to the forward tubulin-binding site after ATP ... Kinesin-1 walks along microtubules by alternating ATP hydrolysis and movement of its two motor domains ("head"). The detached head preferentially binds to the forward tubulin-binding site after ATP binds to the microtubule-bound head, but the mechanism preventing premature microtubule binding while the partner head awaits ATP remains unknown. Here, we examined the role of the neck linker, the segment connecting two heads, in this mechanism. Structural analyses of the nucleotide-free head revealed a bulge just ahead of the neck linker's base, creating an asymmetric constraint on its mobility. While the neck linker can stretch freely backward, it must navigate around this bulge to extend forward. We hypothesized that increased neck linker tension suppresses premature binding of the tethered head, which was supported by molecular dynamics simulations and single-molecule fluorescence assays. These findings demonstrate a tension-dependent allosteric mechanism that coordinates the movement of two heads, where neck linker tension modulates the allosteric conformational changes rather than directly affecting the nucleotide state. 履歴 登録 2024年12月26日 - ヘッダ(付随情報) 公開 2025年4月23日 - マップ公開 2025年4月23日 - 更新 2025年5月21日 - 現状 2025年5月21日 処理サイト : PDBj / 状態 : 公開
すべて表示 表示を減らす