Osley M A, Newton A
J Bacteriol. 1978 Jul;135(1):10-7. doi: 10.1128/jb.135.1.10-17.1978.
To study the regulation of cell cycle events after asymmetric cell division in Caulobacter crescentus, we have identified functions that are required for DNA synthesis in the stalked cell produced at division and in the new stalked cell that develops from the swarmer cell 60 min after division. The initiation of DNA synthesis in the two progeny cells is dependent upon at least two common functions. One of these is a requirement for protein synthesis and the other is a gene product identified in a temperature-sensitive cell cycle mutant. DNA chain elongation requires a third common function. The characteristic pattern of DNA synthesis in C. crescentus appears to be controlled in part by the expression of these functions in the two stalked cells at different times after cell division. The age distribution for Caulobacter cells in an exponential population has been calculated (Appendix by Robert Tax) and used to analyze some of the results.
为了研究新月柄杆菌不对称细胞分裂后细胞周期事件的调控,我们确定了在分裂产生的柄细胞以及分裂60分钟后从游动细胞发育而来的新柄细胞中DNA合成所需的功能。两个子代细胞中DNA合成的起始至少依赖于两种共同功能。其中之一是对蛋白质合成的需求,另一个是在温度敏感型细胞周期突变体中鉴定出的基因产物。DNA链延伸需要第三种共同功能。新月柄杆菌中DNA合成的特征模式似乎部分受这些功能在细胞分裂后不同时间在两个柄细胞中的表达控制。已经计算出指数生长群体中新月柄杆菌细胞的年龄分布(由罗伯特·塔克斯撰写的附录)并用于分析一些结果。