Motion of a rotatory molecular motor and the chemical reaction rate.
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.
Miki
Hiroshi
H
The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan.
Sato
Masatoshi
M
Kohmoto
Mahito
M
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
D008051:Lipid Bilayers; D020409:Molecular Motor Proteins; D011522:Protons