Effect of Growth Temperature on Cold Osmotic Shock in Escherichia coli ML 30
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چکیده
منابع مشابه
Response of Escherichia coli growth rate to osmotic shock.
It has long been proposed that turgor pressure plays an essential role during bacterial growth by driving mechanical expansion of the cell wall. This hypothesis is based on analogy to plant cells, for which this mechanism has been established, and on experiments in which the growth rate of bacterial cultures was observed to decrease as the osmolarity of the growth medium was increased. To disti...
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Sensing a sudden change of the growth temperature, all living organisms produce heat shock proteins or cold shock proteins to adapt to a given temperature. In a heat shock response, the heat shock sigma factor plays a major role in the induction of heat shock proteins including molecular chaperones and proteases, which are well-conserved from bacteria to human. In contrast, no such a sigma fact...
متن کاملMajor cold shock protein of Escherichia coli.
When exponentially growing Escherichia coli cell cultures were transferred from 37 degrees C to 10 degrees C or 15 degrees C, the production of a 7.4-kDa cytoplasmic protein (CS7.4) was prominently induced. The rate of CS7.4 production reached 13% of total protein synthesis within 1-1.5 hr after a shift to 10 degrees C and subsequently dropped to a lower basal level. Regulation of CS7.4 express...
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The general stress response regulator σ, commonly known as RpoS, is a sigma subunit of RNA polymerase that is up-regulated when bacteria are exposed to environmental stresses such as osmotic shock, high temperature, UV radiation, and feast-famine conditions. Current knowledge is that a single stress condition can provide stress tolerance and can also lead to cross-protection against unrelated c...
متن کاملPorin activity in the osmotic shock fluid of Escherichia coli.
Osmotic shock fluid of Escherichia coli exhibited pore-forming activity. This activity could be followed by an in vitro assay based on the conductivity increase for ions due to the presence of pores in black lipid membranes. The histogram (the distribution of conductivity increments in a single pore experiment) obtained with osmotic shock fluid from E. coli was identical to the histogram obtain...
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ژورنال
عنوان ژورنال: Journal of General Microbiology
سال: 1971
ISSN: 0022-1287
DOI: 10.1099/00221287-69-3-429