Motion of rotatory molecular motor and chemical reaction rate

Details Motion of rotatory molecular motor and chemical reaction rate Motion of rotatory molecular motor and chemical reaction rate

2003-06-09

arxiv.org/abs/physics/0306065v2

Phys.Rev.E68(2003)061906

Physics

Biological Physics

12 pages, 8 figures

Scientific paper

10.1103/PhysRevE.68.061906

We examine the dependence of the physical quantities of the rotatory molecular motor, such as the rotation velocity and the proton translocation rate, on the chemical reaction rate using the model based only on diffusion process. A peculiar behavior of proton translocation is found and the energy transduction efficiency of the motor protein is enhanced by this behavior. We give a natural explanation that this behavior is universal when certain inequalities between chemical reaction rates hold. That may give a clue to examine whether the motion of the molecular motor is dominated by diffusion process or not.

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