An ultrasonic motor model for bacterial flagellar motors

Authors
Citation
T. Atsumi, An ultrasonic motor model for bacterial flagellar motors, J THEOR BIO, 213(1), 2001, pp. 31-51
Citations number
78
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Multidisciplinary
Journal title
JOURNAL OF THEORETICAL BIOLOGY
ISSN journal
0022-5193 → ACNP
Volume
213
Issue
1
Year of publication
2001
Pages
31 - 51
Database
ISI
SICI code
0022-5193(20011107)213:1<31:AUMMFB>2.0.ZU;2-8
Abstract
A model for the transduction of energy occurring in bacterial flagellar mot ors is presented. In this model, the influx of ions across the channel caus es the cyclic conformational change of the channel itself, which in turn pr oduces travelling waves in one of the subcomponents of the motor, the C rin g. This wave stabilizes the cyclical movement of the channel which generate s the rotating force. The estimated frequency of cyclic conformational chan ge is between 36 kHz and 6.3 MHz, i.e. in the ultrasonic range. This phenom enon is therefore referred to as the ultrasonic micromotor of microorganism s. (C) 2001 Academic Press.