Stochastic resonance in a biological motor under complex fluctuations.
The dynamics division approach proposed in this work enables us to handle dynamical equations with complex fluctuations. A Brownian motor with cyclic conformational changes is analyzed to understand effects of noise on its signal transduction, and on condition in which stochastic resonance may take place. The result reproduces several features of the experimental data on the electric activation of ion pumping by Na, K-ATPase.
Chang
Cheng-Hung
CH
National Center for Theoretical Sciences, Physics Division, Hsinchu 300, Taiwan.
Tsong
Tian Yow
TY
D003198:Computer Simulation; D004735:Energy Transfer / Q000502:physiology*; D015640:Ion Channel Gating / Q000502:physiology*; D007700:Kinetics; D008564:Membrane Potentials / Q000502:physiology*; D008954:Models, Biological; D015233:Models, Statistical; D020409:Molecular Motor Proteins / Q000502:physiology*; D017711:Nonlinear Dynamics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D000254:Sodium-Potassium-Exchanging ATPase / Q000502:physiology*; D013269:Stochastic Processes
D020409:Molecular Motor Proteins; D000254:Sodium-Potassium-Exchanging ATPase