Enhanced diffusion of molecular motors in the presence of adenosine triphosphate and external force

Ryota Shinagawa, Kazuo Sasaki

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The diffusion of a molecular motor in the presence of a constant external force is considered on the basis of a simple theoretical model. The motor is represented by a Brownian particle moving in a series of parabolic potentials placed periodically on a line, and the potential is switched stochastically from one parabola to another by a chemical reaction, which corresponds to the hydrolysis or synthesis of adenosine triphosphate (ATP) in motor proteins. It is found that the diffusion coefficient as a function of the force exhibits peaks. The mechanism of this diffusion enhancement and the possibility of observing it in F1-ATPase, a biological rotary motor, are discussed.

Original languageEnglish
Article number064004
Journaljournal of the physical society of japan
Volume85
Issue number6
DOIs
Publication statusPublished - 2016 Jun 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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