大肠杆菌中MinD振荡的温度依赖性：在高温下快速运行
Temperature dependence of MinD oscillation in Escherichia coli: running hot and fast.
作者信息
Touhami Ahmed, Jericho Manfred, Rutenberg Andrew D
机构信息
Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 3J5, Canada.
出版信息
J Bacteriol. 2006 Nov;188(21):7661-7. doi: 10.1128/JB.00911-06. Epub 2006 Aug 25.
Abstract
We observed that the oscillation period of MinD within rod-like and filamentous cells of Escherichia coli varied by a factor of 4 in the temperature range from 20 degrees C to 40 degrees C. The detailed dependence was Arrhenius, with a slope similar to the overall temperature-dependent growth curve of E. coli. The detailed pattern of oscillation, including the characteristic wavelength in filamentous cells, remained independent of temperature. A quantitative model of MinDE oscillation exhibited similar behavior, with an activated temperature dependence of the MinE-stimulated MinD-ATPase rate.
摘要
我们观察到，在20摄氏度至40摄氏度的温度范围内，大肠杆菌杆状和丝状细胞内MinD的振荡周期变化了4倍。详细的依赖关系符合阿伦尼乌斯方程，其斜率与大肠杆菌整体温度依赖性生长曲线相似。振荡的详细模式，包括丝状细胞中的特征波长，与温度无关。MinDE振荡的定量模型表现出类似的行为，MinE刺激的MinD-ATP酶速率具有活化的温度依赖性。
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