• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Single Molecule Motion Analysis of Biomolecular Motor Kinesin in an Active Fluctuation Environment

Research Project

Project/Area Number 15K05248
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Biological physics/Chemical physics/Soft matter physics
Research InstitutionYamaguchi University (2018)
Kyushu University (2015-2017)

Principal Investigator

ARIGA Takayuki  山口大学, 大学院医学系研究科, 准教授(特命) (30452262)

Research Collaborator MIZUNO Daisuke  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords生体分子モーター / エネルギー変換 / 1分子計測・操作 / 非平衡物理学 / 生物物理 / 生体物質の物理 / 光ピンセット
Outline of Final Research Achievements

Kinesin is a molecular motor that carries various loads while walking on a microtubule, where thermal fluctuation is involved in the motor function. On the other hand, it has been revealed that the intracellular environment where they work also generates nonthermal fluctuation in addition to the thermal fluctuation. In this study, the motion of kinesin in such a non-thermally fluctuated environment was examined both experimentally and theoretically. As a result, we found that kinesin changes its motion behavior by adding external force fluctuations. Next, we clarified the nonequilibrium energetics of kinesin by measuring its dissipation from the relationship between the velocity fluctuation and the response to a tiny external force. In addition, with the aim of the force measurement in living cells, we improved the measurement system and developed novel probe particles.

Academic Significance and Societal Importance of the Research Achievements

本研究により、レール上を歩行するタイプの分子モーターであるキネシンで初めて、エネルギーの入出力の解析を行うことができた。また、そのキネシンの運動が、細胞の内部という特殊な環境に特化した性能を持っていることも示唆された。それらの成果は、生物が、未だ人類の知らない未知のエネルギー変換の仕組みをうまく利用している可能性を仄めかしており、本研究はそれを理解する道を拓いた。このように、小さな生体分子から学ぶエネルギー変換の仕組みは、近年活発に開発されている人工分子モーターの構築や設計(2016 年度ノーベル化学賞受賞)と、そのドラッグデリバリーシステムへの医療応用などにも役立つことが期待できる。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (21 results)

All 2018 2017 2016 2015 Other

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (17 results) (of which Int'l Joint Research: 7 results,  Invited: 3 results) Remarks (2 results)

  • [Journal Article] Nonequilibrium Energetics of Molecular Motor Kinesin2018

    • Author(s)
      Ariga Takayuki、Tomishige Michio、Mizuno Daisuke
    • Journal Title

      Physical Review Letters

      Volume: 121 Issue: 21 Pages: 218101-218101

    • DOI

      10.1103/physrevlett.121.218101

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Feedback-tracking microrheology in living cells2017

    • Author(s)
      Nishizawa Kenji、Bremerich Marcel、Ayade Heev、Schmidt Christoph F.、Ariga Takayuki、Mizuno Daisuke
    • Journal Title

      Science Advances

      Volume: 3 Issue: 9

    • DOI

      10.1126/sciadv.1700318

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 分子モーターキネシンの非平衡エネルギー論と細胞内アクティブ環境2018

    • Author(s)
      有賀隆行
    • Organizer
      理論と実験研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Energetics of molecular motor kinesin2018

    • Author(s)
      Takayuki Ariga, Michio Tomishige, Daisuke Mizuno
    • Organizer
      International Conference on APEF 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nonequilibrium energetics of single molecule motor, kinesin2018

    • Author(s)
      Takayuki Ariga, Michio Tomishige, Daisuke Mizuno
    • Organizer
      10th Biennial Sigle Molecule Biophysics Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 生体分子モーターの非平衡エネルギー論 ~キネシンは効率の悪いモーターだった!?~2018

    • Author(s)
      有賀隆行
    • Organizer
      第2回岡崎発動分子科学セミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 生体分子モーター・キネシンのエネルギー収支2018

    • Author(s)
      有賀隆行
    • Organizer
      第137回 福工大土曜談話会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Nonequilibrium Energetics of Single Molecule Motor, Kinesin-12018

    • Author(s)
      Takayuki Ariga, Michio Tomishige, Daisuke Mizuno
    • Organizer
      62nd Annual Meeting Biophysical Society
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] キネシンの非平衡エネルギー計測と解析2017

    • Author(s)
      有賀隆行、富重道雄、水野大介
    • Organizer
      日本物理学会第72回年次大会(2017年)
    • Place of Presentation
      大阪大学 豊中キャンパス
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] Nonequilibrium energetics of kinesin2017

    • Author(s)
      Takayuki Ariga, Michio Tomishige, Daisuke Mizuno
    • Organizer
      第55回日本生物物理学会年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Nonequilibrium Energy Dissipation from Molecular Motor kinesin2017

    • Author(s)
      Takayuki Ariga, Michio Tomishige, Daisuke Mizuno
    • Organizer
      International Symposium on Fluctuation and Structure out of Equilibrium 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] キネシンの非平衡散逸2016

    • Author(s)
      有賀隆行、富重道雄、水野大介
    • Organizer
      第54回日本生物物理学会年会
    • Place of Presentation
      つくば国際会議場
    • Year and Date
      2016-11-25
    • Related Report
      2016 Research-status Report
  • [Presentation] Non-equiliblium energetics of molecular motor kinesin2016

    • Author(s)
      有賀隆行
    • Organizer
      ゆらぎと構造の協奏第3回領域研究会
    • Place of Presentation
      福岡県福岡市
    • Year and Date
      2016-06-17
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Dual-feedback microrheology in cytoskeletal networks2016

    • Author(s)
      N. Honda, K. Nishizawa, T. Ariga, D. Mizuno
    • Organizer
      APS March Meeting 2016
    • Place of Presentation
      Baltimore, USA
    • Year and Date
      2016-03-14
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Non-equilibrium energetics of molecular motor kinesin.2016

    • Author(s)
      有賀隆行
    • Organizer
      ゆらぎと構造の協奏 第3回領域研究会
    • Place of Presentation
      九州大学伊都キャンパス
    • Related Report
      2016 Research-status Report
  • [Presentation] 多重フィードバックによる細胞骨格のマイクロレオロジー計測2015

    • Author(s)
      本田菜月, 西澤賢治, 有賀隆行, 水野大介
    • Organizer
      第5 回ソフトマター研究会
    • Place of Presentation
      宮城県仙台市
    • Year and Date
      2015-12-18
    • Related Report
      2015 Research-status Report
  • [Presentation] Non-equiliblium energy measurement of molecular motor kinesin2015

    • Author(s)
      T. Ariga, M. Tomishige, D. Mizuno
    • Organizer
      International Symposium on Fluctuation and Structure out of Equilibrium 2015
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2015-08-20
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Dual-feedback microrheology in cytoskeletal networks2015

    • Author(s)
      N. Honda, K. Nishizawa, T. Ariga, T. Yanagishima, D. Mizuno
    • Organizer
      International Symposium on Fluctuation and Structure out of Equilibrium 2015
    • Place of Presentation
      kyoto, Japan
    • Year and Date
      2015-08-20
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 分子モーターキネシンの非平衡エネルギー計測2015

    • Author(s)
      有賀隆行、富重道雄、水野大介
    • Organizer
      ゆらぎと構造の協奏第2回公開シンポジウム
    • Place of Presentation
      東京都文京区
    • Year and Date
      2015-04-30
    • Related Report
      2015 Research-status Report
  • [Remarks] PRL論文公開・ニュースリリースしました

    • URL

      https://researchmap.jp/jomohjov5-2514524/#_2514524

    • Related Report
      2018 Annual Research Report
  • [Remarks] 歩行型生体分子モーターのエネルギー入出力を解明

    • URL

      http://www.yamaguchi-u.ac.jp/weeklynews/2018/_7502.html

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2015-04-16   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi