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20–30 μm s −1
- Escherichia coli is a model organism for studies of the biophysics, mechanics, and behavior of the movement of bacterial cells in bulk fluids. 1 This rod-shaped bacterium (~ 2 μm long, 800 nm wide) uses multiple flagella oriented axially along the cell body to propel cells through bulk liquids at low Reynolds number at a velocity that approaches 20–30 μm s −1. 2, 3 The counterclockwise rotation of the flagella (as viewed from behind the cell) bundles these filaments, performs work on the...
www.ncbi.nlm.nih.gov › pmc › articlesFrom swimming to swarming: Escherichia coli cell motility in ...
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Sep 21, 2021 · Apart from the ‘run-and-tumble’ motility seen in E. coli and other peritrichously flagellated bacteria, swimming bacteria use many other strategies to change direction.
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Mar 4, 2022 · The crucial role of motility in bacterial survival, host colonization, and/or virulence is a fact. This mini review showed that multiple approaches are available to study motility, from soft agar to a wide variety of microscopic techniques.
- 10.3390/microorganisms10030563
- 2022/03
- Microorganisms. 2022 Mar; 10(3): 563.
Escherichia coli is a model organism for studies of the biophysics, mechanics, and behavior of the movement of bacterial cells in bulk fluids. 1 This rod-shaped bacterium (~ 2 μm long, 800 nm wide) uses multiple flagella oriented axially along the cell body to propel cells through bulk liquids at low Reynolds number at a velocity that approaches...
- Jean-Marie Swiecicki, Olesksii Sliusarenko, Douglas B. Weibel
- 10.1039/c3ib40130h
- 2013
- 2013/12
Bacteria inoculated in the center of a nutrient rich plate fortified with less than 0.3% agar will consume nutrients locally, generate a nutrient gradient, and will chemotax up the gradient through the pores in the agar 100. Although bacteria technically swim through liquid filled pores, the assay is called a “swarm assay”.
- Daniel B. Kearns
- 10.1038/nrmicro2405
- 2010
- 2010/09
Aug 9, 2010 · Recently, E. coli, which is peritrichously flagellated, has been shown to swarm between two closely opposed fixed surfaces 24,35,36,37. As a single flagellum requires minimal resource...
- Daniel B. Kearns
- 2010
Nov 16, 2015 · Motility underpins many microbial processes, such as behavioural responses of microbial cells to chemical stimuli, the interactions between cells and biotic or abiotic surfaces, and cell–cell...
Nov 3, 2003 · For our purposes, the following details about the motility and chemotaxis of E. coli are important. E. coli cells have several extracellular helical thread-like structures called flagella. Each flagellum has a rotary motor at its base, which can rotate in a clockwise or counterclockwise direction.
