Implications of Three-Step Swimming Patterns in Bacterial Chemotaxis

被引：19

作者：

Altindal, Tuba ^{[1
]}

Xie, Li ^{[1
]}

Wu, Xiao-Lun ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

来源：

BIOPHYSICAL JOURNAL | 2011年 / 100卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.bpj.2010.11.029

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

We recently found that marine bacteria Vibrio alginolyticus execute a cyclic three-step (run-reverse-flick) motility pattern that is distinctively different from the two-step (run-tumble) pattern of Escherichia coli. How this novel, to our knowledge, swimming pattern is regulated by cells of V. alginolyticus is not currently known, but its significance for bacterial chemotaxis is self-evident and will be delineated herein. Using a statistical approach, we calculated the migration speed of a cell executing the three-step pattern in a linear chemical gradient, and found that a biphasic chemotactic response arises naturally. The implication of such a response for the cells to adapt to ocean environments and its possible connection to E. coli's response are also discussed.

引用

页码：32 / 41

页数：10

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