منابع مشابه
Concerted control of Escherichia coli cell division.
The coordination of cell growth and division is a long-standing problem in biology. Focusing on Escherichia coli in steady growth, we quantify cell division control using a stochastic model, by inferring the division rate as a function of the observable parameters from large empirical datasets of dividing cells. We find that (i) cells have mechanisms to control their size, (ii) size control is ...
متن کاملFtsZ regulates frequency of cell division in Escherichia coli.
Cell division is regulated so that it occurs only once per cell cycle. In Escherichia coli, a rod-shaped bacterium, division normally takes place at the center of the long axis of the cell; however, in the minicell mutant, division can also take place at the cell pole. Such divisions take place at the expense of normal divisions, resulting in an overall increase in nucleated cell length. We rep...
متن کاملPostirradiation cell division in 5-fluorouracil-pre-treated Escherichia coli.
The correlation between 5-fluorouracil-induced resistance to ultraviolet (UV) light and the ability of bacterial cells to repair irradiation damage was investigated in various strains of Escherichia coli. Preincubation with 5-fluorouracil did not influence the dark-repair mechanism. It affected, however, the UV light-induced damage of cell division in filament-forming strains. It is suggested t...
متن کاملNucleoid-independent identification of cell division sites in Escherichia coli.
The mechanism used by Escherichia coli to determine the correct site for cell division is unknown. In this report, we have attempted to distinguish between a model in which septal position is determined by the position of the nucleoids and a model in which septal position is predetermined by a mechanism that does not involve nucleoid position. To do this, filaments with extended nucleoid-free r...
متن کاملLocalizing cell division in spherical Escherichia coli by nucleoid occlusion.
The spatial relationship between FtsZ localization and nucleoid segregation was followed in Escherichia coli thyA cells, made spheroidal by brief exposure to mecillinam and after manipulating chromosome replication time using changes ('steps') in thymine concentration [Zaritsky et al., Microbiology 145 (1999) 1015-1022]. In such cells, fluorescent FtsZ-GFP arcs did not overlap the DAPI-stained ...
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ژورنال
عنوان ژورنال: Journal of the agricultural chemical society of Japan
سال: 1989
ISSN: 0002-1407,1883-6844
DOI: 10.1271/nogeikagaku1924.63.1755