title: Motion of a rotatory molecular motor and the chemical reaction rate.
abstract: 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.
authors.affiliation: The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Miki
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Sato
authors.forename: Mahito
authors.initials: M
authors.lastname: Kohmoto
mesh_terms: D000465:Algorithms; D004058:Diffusion; D006863:Hydrogen-Ion Concentration; D008051:Lipid Bilayers / Q000737:chemistry; D008954:Models, Biological; D008956:Models, Chemical; D015233:Models, Statistical; D020409:Molecular Motor Proteins; D009038:Motion; D011522:Protons; D013816:Thermodynamics
chemical_list: D008051:Lipid Bilayers; D020409:Molecular Motor Proteins; D011522:Protons