Role of rpoS in acid resistance and fecal shedding of Escherichia coli 0157:H7
Article Abstract:
Results show that glucose-repressed system is regulated by rpoS and the latter plays a role in the passage and shedding of Escherichia coli 0157:H4. Data indicate that this may lead to some resistance to gastrointestinal acid stress.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
Acid resistance systems required for survival of Escherichia coli O157:H7 in the bovine gastrointestinal tract and in apple cider are different
Article Abstract:
The examination of acid resistance (AR) in Escherichia coli O157:H7 by selectively removing the three determinants of AR is presented. The results indicate that E. coli O157:H7 utilizes different AR systems based on the type of acidic environment encountered.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
Lethality of a heat- and phosphate-catalyzed glucose by-product to Escherichia coli O157:H7 and partial protection conferred by the rpoS regulon
Article Abstract:
A by-product of glucose produced during sterilization at neutral acidity and in the presence of phosphate was bactericidal to Escherichia coli O157:H7. Other six-carbon and five-carbon reducing sugars also produced a toxic by-product under the same conditions. Growth in glucose-free medium did not alleviate the sensitivity to the glucose-phosphate by-product and excludes the possibility of substrate-accelerated death as the cause of the bactericidal effect.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Cloning and characterization of the glucosidase II alpha subunit gene of Trichoderma reesei: A frameshift mutation results in the aberrant glycosylation profile of the hypercellulolytic strain rut-C30
- Abstracts: Modification of the signal sequence cleavage site of listeriolysin O does not affect protein secretion but impairs the virulence of Listeria monocytogenes
- Abstracts: Primary metabolite kinetics of bacteriocin biosynthesis by Lactobacillus amylovorus and evidence for stimulation of bacteriocin production under unfavourable growth conditions
- Abstracts: Molecular characterization of Irish Salmonella enterica serotype Typhimurium: detection of class I integrons and assessment of genetic relationships by DNA amplification fingerprinting
- Abstracts: Optimization of airborne endotoxin exposure assessment: effects of filter type, transport conditions, extraction solutions, and storage of samples and extracts