DocumentCode :
3518984
Title :
Stochastic dynamics of molecular machine: it´s nanomachine which is based on Nyquist theory
Author :
Tsuura, Hiroyuki Ma ; Nakano, Masahiro
Author_Institution :
Nat. Graduate Inst. for Policy Studies, Tokyo, Japan
fYear :
1999
fDate :
1999
Firstpage :
51
Lastpage :
58
Abstract :
A new model of actin myosin system named Stochastic Inclined Rods Model (SIRM), whose energy of motion is supplied from random noise (or thermal noise) and always moves to one direction, has been proposed. SIRM has a simple structure, which is composed of an inclined spring, a myosin head, and bundle of rods. In the SIRM, the energy of motion is supplied from random noise (or thermal noise) of water molecules generated through the heat energy of ATP hydrolysis. In an open and dissipative system, the myosin head works as a resonator of random noise, which accepts the energy through resonance. It is shown that the inclined rod and the spherical shape of G-actin are very important elements for the purpose of breaking the symmetry in the vibration of stochastic resonance (SR) and of generating a one directional motion. When the myosin head interacts with the spherical potential of G-actin, the trigonometric wave of stochastic resonance is distorted by the collision between the head and G-actin, and then it obliquely kicks the actin fiber by using the spring. It is thus shown that the inclined rod and the shape of the G-actin makes the SIRM move in one direction, even if the potentials between the myosin head and G-actin are perfectly symmetric
Keywords :
biotechnology; fuzzy systems; molecular biophysics; nanotechnology; proteins; stochastic systems; thermal noise; water; ATP hydrolysis; Duffing equation; G-actin; Nyquist theory; SIRM; Stochastic Inclined Rods Model; actin myosin system; dissipative system; molecular machine; myosin head; nanomachine; numerical solution; random noise; spherical shape; stochastic dynamics; stochastic resonance; thermal noise; thermodynamics; trigonometric wave; water molecules; Magnetic heads; Noise generators; Noise shaping; Shape; Springs; Stochastic processes; Stochastic resonance; Stochastic systems; Structural rods; Water heating;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Micromechatronics and Human Science, 1999. MHS '99. Proceedings of 1999 International Symposium on
Conference_Location :
Nagoya
Print_ISBN :
0-7803-5790-6
Type :
conf
DOI :
10.1109/MHS.1999.819981
Filename :
819981
Link To Document :
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