학술논문

Shear Stress Transmission Model for the Flagellar Rotary Motor
Document Type
article
Source
International Journal of Molecular Sciences, Vol 9, Iss 9, Pp 1595-1620 (2008)
Subject
Flagellar rotary motor
model for flagellar motor
proton-induced electric field in membrane
permanent electric dipole
viscoelasticity
motor driven by shear force
rotation velocity vs. proton deriving force
torque-velocity relation
Biology (General)
QH301-705.5
Chemistry
QD1-999
Language
English
ISSN
1422-0067
Abstract
Most bacteria that swim are propelled by flagellar filaments, which are driven by a rotary motor powered by proton flux. The mechanism of the flagellar motor is discussed by reforming the model proposed by the present authors in 2005. It is shown that the mean strength of Coulomb field produced by a proton passing the channel is very strong in the Mot assembly so that the Mot assembly can be a shear force generator and induce the flagellar rotation. The model gives clear calculation results in agreement with experimental observations, e g., for the charasteristic torque-velocity relationship of the flagellar rotation.