Sliding Mechanism for Actin Myosin System
Bao-quan Ai, Xian-ju Wang, Guo-tao Liu, Liang-gang Liu, M. Nakano, H. Matsuura
Abstract
Based on the Stochastic Inclined Rods Model (SIRM) proposed by H. Matsuura and M. Nakano, we study the microscopic motion of actin myosin system including the motion of the G-actin. Our model is composed of an inclined spring (rod), a myosin head, a myosin filament and G-actins. We discuss the stochastic resonance between the myosin head and random noise. The results of calculation show that the model can convert the random motion to one directional motion, and the myosin head works as a resonator of random noise which absorbs the energy through the stochastic resonance. The intermolecular potential between the myosin head and G-actin and the inclined rod play a key role for the muscle's motion. The energy consumed by the motor is directly supplied from the surroundings (i.e., the thermal motions of water molecules).
Create a lesson
Related papers
The Motile-Units model: Interacting spins model of cell polarization and motility
Jonathan E. Ron, Nir S. Gov
Limits of Inferring Parametric Response from Single-Condition Trajectories inStochastic Reaction Networks
Quentin Thommen
Multiflagellarity facilitates bacterial upstream motility
Ran Tao, Nathaniel C. Esteves, Wanho Lee et al.
Protein eXplosion Imaging (PXI): Protein Structures from Laser-Driven Explosions
Alfredo Bellisario, Tomas André, Carl Caleman et al.
Multiscale retinal flow on a spherical cap of varying aperture
Chang Lin, Zilong Song, Bob Eisenberg et al.
Double-well potentials and crucial estimations in nonlinear dynamics of microtubules
Rama Gupta, Nicolina Pop, Dragana Ranković et al.