DOI: 10.1073/pnas.92.8.3502. Fluctuation analysis of rotational speeds of the bacterial flagellar motor.

Fluctuation analysis of rotational speeds of the bacterial flagellar motor.

10.1073/pnas.92.8.3502

Crossref journal-article

Proceedings of the National Academy of Sciences

Proceedings of the National Academy of Sciences (341)

Abstract

We measured the dependence of the variance in the rotation rate of tethered cells of Escherichia coli on the mean rotation rate over a regime in which the motor generates constant torque. This dependence was compared with that of broken motors. In either case, motor torque was augmented with externally applied torque. We show that, in contrast to broken motors, functioning motors in this regime do not freely rotationally diffuse and that the variance measurements are consistent with the predicted values of a stepping mechanism with exponentially distributed waiting times (a Poisson stepper) that steps approximately 400 times per revolution.

Bibliography

Samuel, A. D., & Berg, H. C. (1995). Fluctuation analysis of rotational speeds of the bacterial flagellar motor. Proceedings of the National Academy of Sciences, 92(8), 3502â3506.

Authors 2

A D Samuel (first)
H C Berg (additional)

References 0 Referenced 50

None

Dates

Type	When
Created	19 years, 2 months ago (May 31, 2006, 9:31 a.m.)
Deposited	3 years, 4 months ago (April 13, 2022, 2:05 p.m.)
Indexed	1 year ago (Aug. 12, 2024, 7:16 a.m.)
Issued	30 years, 4 months ago (April 11, 1995)
Published	30 years, 4 months ago (April 11, 1995)
Published Online	30 years, 4 months ago (April 11, 1995)
Published Print	30 years, 4 months ago (April 11, 1995)

Funders 0

None

BibTeX

@article{Samuel_1995, title={Fluctuation analysis of rotational speeds of the bacterial flagellar motor.}, volume={92}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.92.8.3502}, DOI={10.1073/pnas.92.8.3502}, number={8}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Samuel, A D and Berg, H C}, year={1995}, month=apr, pages={3502–3506} }

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