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2023 Fiscal Year Final Research Report

Quantification and mathematical modeling of non-equilibrium dissipation inside biomolecular motors

Research Project

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Project/Area Number 18K03564
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 13040:Biophysics, chemical physics and soft matter physics-related
Research InstitutionOsaka University (2023)
Yamaguchi University (2018-2022)

Principal Investigator

Ariga Takayuki  大阪大学, 大学院生命機能研究科, 准教授 (30452262)

Project Period (FY) 2018-04-01 – 2024-03-31
Keywords生体分子モーター / 1分子計測・操作 / エネルギー変換 / 非平衡物理学
Outline of Final Research Achievements

Kinesins that carry vesicles in cells are biomolecular motors that convert chemical energy into mechanical work. Despite progress in understanding their kinetic mechanisms, our understanding of energy conversion has not progressed. In this study, we constructed a mathematical model to explain nontrivial phenomena such as internal dissipation and fluctuation-induced acceleration of kinesins, which we found in our previous studies and in other projects. As a result, we succeeded in constructing a model that can explain various experimental results while satisfying thermodynamic requirements.

Free Research Field

生物物理学

Academic Significance and Societal Importance of the Research Achievements

エネルギーをいかにして効率よく利用するのかは、人類にとって重要な課題である。生物が作りだす小さな分子モーターは、環境の熱揺らぎを有効に使いながら化学的なエネルギーを力学的な仕事へと効率よく変換している。その仕組みを実験と理論を通じてミクロなスケールから理解することは、人類が今まで活用していなかったエネルギー利用の仕組みを、将来的に応用可能としうる意義を持つ。

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Published: 2025-01-30  

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