- EMDB-39669: Kinesin-14 with AMPPNP bound to 14 PF Microtubule -
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基本情報
登録情報
データベース: EMDB / ID: EMD-39669
タイトル
Kinesin-14 with AMPPNP bound to 14 PF Microtubule
マップデータ
試料
複合体: Kinesin-microtubule complex
複合体: Tubulin
タンパク質・ペプチド: Tubulin alpha-1B chain Q2XVP4
タンパク質・ペプチド: Tubulin beta-5B chain Q767L7
複合体: NCD
タンパク質・ペプチド: NCD
キーワード
Kinesin Motor Proteins / Force Production / Power Stroke Fluctuations / Motor Spring-like Element / Reversed Motility / Mechanochemical Coupling / Mechanical States / CELL CYCLE
機能・相同性
機能・相同性情報
minus-end directed microtubule sliding / distributive segregation / regulation of mitotic spindle elongation / meiotic spindle assembly / Regulation of PLK1 Activity at G2/M Transition / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / Recruitment of mitotic centrosome proteins and complexes ...minus-end directed microtubule sliding / distributive segregation / regulation of mitotic spindle elongation / meiotic spindle assembly / Regulation of PLK1 Activity at G2/M Transition / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / Recruitment of mitotic centrosome proteins and complexes / mitotic spindle elongation / odontoblast differentiation / mitotic spindle microtubule / meiotic spindle organization / Neutrophil degranulation / microtubule bundle formation / spindle assembly involved in female meiosis / regulation of mitotic spindle assembly / mitotic centrosome separation / meiotic spindle / Recruitment of NuMA to mitotic centrosomes / minus-end-directed microtubule motor activity / spindle organization / regulation of synapse organization / nuclear envelope lumen / MHC class I protein binding / mitotic spindle assembly / mRNA transport / intercellular bridge / spindle assembly / mitotic spindle organization / chromosome segregation / structural constituent of cytoskeleton / 加水分解酵素; 酸無水物に作用; 酸無水物に作用・細胞または細胞小器官の運動に関与 / microtubule cytoskeleton organization / spindle / cytoplasmic ribonucleoprotein granule / mitotic spindle / mitotic cell cycle / cell body / microtubule binding / microtubule / hydrolase activity / cell division / GTPase activity / ubiquitin protein ligase binding / centrosome / GTP binding / protein homodimerization activity / ATP binding / metal ion binding / nucleus / 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. / Beta tubulin, autoregulation binding site ...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. / 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
Protein claret segregational / Tubulin beta chain 類似検索 - 構成要素
生物種
Sus scrofa (ブタ) / Drosophila melanogaster (キイロショウジョウバエ) / Drosophila melanogaster
Japan Agency for Medical Research and Development (AMED)
JP21gm1610003
日本
Japan Society for the Promotion of Science (JSPS)
22K06809
日本
引用
ジャーナル: bioRxiv / 年: 2024 タイトル: Structural transitions in kinesin minus-end directed microtubule motility. 著者: Satoki Shibata / Matthew Y Wang / Tsuyoshi Imasaki / Hideki Shigematsu / Yuanyuan Wei / Chacko Jobichen / Hajime Hagio / J Sivaraman / Sharyn A Endow / Ryo Nitta / 要旨: Kinesin motor proteins hydrolyze ATP to produce force for spindle assembly and vesicle transport, performing essential functions in cell division and motility, but the structural changes required for ...Kinesin motor proteins hydrolyze ATP to produce force for spindle assembly and vesicle transport, performing essential functions in cell division and motility, but the structural changes required for force generation are uncertain. We now report high-resolution structures showing new transitions in the kinesin mechanochemical cycle, including power stroke fluctuations upon ATP binding and a post-hydrolysis state with bound ADP + free phosphate. We find that rate-limiting ADP release occurs upon microtubule binding, accompanied by central β-sheet twisting, which triggers the power stroke - stalk rotation and neck mimic docking - upon ATP binding. Microtubule release occurs with β-strand-to-loop transitions, implying that β-strand refolding induces Pi release and the recovery stroke. The strained β-sheet during the power stroke and strand-to-loop transitions identify the β-sheet as the long-sought motor spring.