PMID: 8962029Dec 10, 1996Paper

Symmetries in bacterial motility

Proceedings of the National Academy of Sciences of the United States of America
H C Berg

Abstract

Descriptions are given of three kinds of symmetries encountered in studies of bacterial locomotion, and of the ways in which they are circumvented or broken. A bacterium swims at very low Reynolds number: it cannot propel itself using reciprocal motion (by moving through a sequence of shapes, first forward and then in reverse); cyclic motion is required. A common solution is rotation of a helical filament, either right- or left-handed. The flagellar rotary motor that drives each filament generates the same torque whether spinning clockwise or counterclockwise. This symmetry is broken by coupling to the filament. Finally, bacterial populations, grown in a nutrient medium from an inoculum placed at a single point, usually move outward in symmetric circular rings. Under certain conditions, the cells excrete a chemoattractant, and the rings break up into discrete aggregates that can display remarkable geometric order.

References

Jan 1, 1977·Proceedings of the National Academy of Sciences of the United States of America·R M Macnab
Feb 14, 1991·Nature·E O Budrene, H C Berg
Jan 1, 1988·Cold Spring Harbor Symposia on Quantitative Biology·H C Berg
Nov 1, 1972·Experimental Cell Research·R Nossal
May 3, 1974·Nature·M Silverman, M Simon
Apr 1, 1974·Proceedings of the National Academy of Sciences of the United States of America·S H LarsenR W Hogg
Aug 12, 1966·Science·J Adler
Apr 1, 1983·Journal of Bacteriology·S M BlockH C Berg
May 1, 1995·Biophysical Journal·D E WoodwardH C Berg
Jul 1, 1995·Biophysical Journal·R M BerryH C Berg
Dec 1, 1952·The Quarterly Review of Biology·P KORRINGA

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Citations

Jul 22, 2008·Bulletin of Mathematical Biology·M J TindallJ P Armitage
Apr 4, 2009·Bulletin of Mathematical Biology·Chia-Yu Hsu, Robert Dillon
Apr 2, 2003·Biophysical Journal·G V SoniG V Shivashankar
Oct 22, 2003·Bio Systems·Anna A ChernovaPhilip K Maini
Dec 26, 2002·Annual Review of Biochemistry·Howard C Berg
Jan 6, 2012·PLoS Computational Biology·Chuan XueHans G Othmer
Mar 14, 2012·Wiley Interdisciplinary Reviews. Systems Biology and Medicine·Marcus J TindallJudith P Armitage
Jan 20, 2006·FEMS Microbiology Ecology·James G Mitchell, Kazuhiro Kogure
Oct 10, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Erik Gauger, Holger Stark
Oct 29, 1998·Journal of Bacteriology·M J WardD R Zusman
Jun 4, 2008·Physical Review Letters·Feodor Y OgrinC Peter Winlove
Sep 17, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Maryam Taghiloo, MirFaez Miri

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