Protective effect of glutathione on Escherichia coli cells upon lethal heat stress
نویسندگان
چکیده
منابع مشابه
Survival of Escherichia coli under lethal heat stress by L-form conversion
Transition of bacteria to cell wall deficient L-forms in response to stress factors has been assumed as a potential mechanism for survival of microbes under unfavorable conditions. In this article, we provide evidence of paradoxal survival through L-form conversion of E. coli high cell density population after lethal treatments (boiling or autoclaving). Light and transmission electron microscop...
متن کاملHeat shock protein GroE of Escherichia coli: key protective roles against thermal stress.
An Escherichia coli mutant lacking the heat shock sigma-factor (sigma 32) is defective in transcription from heat shock promoters and cannot grow at temperatures above 20 degrees C. To assess physiological roles of sigma 32 and heat shock proteins, we isolated and characterized a set of temperature-resistant revertants from this deletion (delta rpoH) mutant. Most of them were found to carry a D...
متن کاملRibosome Profiling Reveals Genome-wide Cellular Translational Regulation upon Heat Stress in Escherichia coli
Heat shock response is a classical stress-induced regulatory system in bacteria, characterized by extensive transcriptional reprogramming. To compare the impact of heat stress on the transcriptome and translatome in Escherichia coli, we conducted ribosome profiling in parallel with RNA-Seq to investigate the alterations in transcription and translation efficiency when E. coli cells were exposed...
متن کاملEffect of stress on production of heat labile enterotoxin by Escherichia coli.
Enterotoxigenic Escherichia coli (ETEC) is an important pathogen responsible for secretory diarrhoea. The production of heat labile enterotoxin (LT), by ETEC, is largely responsible for the pathogenesis of diarrhoea. In the present study we investigated the effect of stress factors such as temperature, pH, osmotic stress and nutritional limitation on the production of LT by ETEC using in-house ...
متن کاملEffect of ethylenediaminetetraacetate upon the surface of Escherichia coli.
The effect of ethylenediaminetetraacetate (EDTA) on the envelope of two strains of Escherichia coli (B and Cla) was studied with freeze-fracturing methods. Untreated cells showed the outer membrane's outer surface with a fine texture of randomly spaced depressions of about 4.5-nm diameter; small areas with symmetrical arrangements of structural surface elements were also observed. The outer mem...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Food Research International
سال: 2019
ISSN: 0963-9969
DOI: 10.1016/j.foodres.2018.12.063