Publication: Switching dynamics of the bacterial flagellar motor near zero load
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Date
2014
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Proceedings of the National Academy of Sciences
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Citation
Wang, F., J. Yuan, and H. C. Berg. 2014. “Switching Dynamics of the Bacterial Flagellar Motor Near Zero Load.” Proceedings of the National Academy of Sciences 111 (44) (October 20): 15752–15755. doi:10.1073/pnas.1418548111.
Research Data
Abstract
Switching dynamics of flagellar motors of Escherichia coli is commonly observed through markers attached to the flagellar filaments. To eliminate possible complications resulting from the conformational transitions of these filaments and to look at the output of motors more directly, we monitored motor rotation by attaching nanogold spheres to the hooks of cells lacking filaments. We observed exponentially distributed counterclockwise (CCW) and clockwise (CW) intervals and Lorentzian power spectra of the switching time series consistent with models that treat motor switching as a two-state Poisson process.
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Keywords
motility, molecular motor, switch, nanogold
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