大肠杆菌在狭窄毛细血管中的单向运动。
Unidirectional motility of Escherichia coli in restrictive capillaries.
作者信息
Liu Z, Papadopoulos K D
机构信息
Department of Chemical Engineering, Tulane University, New Orleans, LA 70118, USA.
出版信息
Appl Environ Microbiol. 1995 Oct;61(10):3567-72. doi: 10.1128/aem.61.10.3567-3572.1995.
Abstract
In a 6-microns capillary filled with buffer and in the absence of any chemotactic stimuli, Escherichia coli K-12 cells swim persistently in only one direction. This behavior of E. coli can be simply explained by means of the length and relative rigidity of their flagella. Single-cell motility parameters--swimming speed, turn angle, and run length time--were measured. Compared with the motility parameters measured in bulk phase, turn angle was influenced because of the effect of the geometrical restriction.
摘要
在一根充满缓冲液且不存在任何趋化刺激的6微米毛细管中，大肠杆菌K - 12细胞仅沿一个方向持续游动。大肠杆菌的这种行为可以通过其鞭毛的长度和相对刚性简单地解释。测量了单细胞运动参数——游动速度、转向角度和游动长度时间。与在体相中测量的运动参数相比，由于几何限制的影响，转向角度受到了影响。
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