|
Diversify or Die: Generation of Diversity in Response to Stress
|
When challenged with unfavorable conditions, microorganisms can develop a stress response that allows them to adapt to or survive in the new environment. A common feature of the numerous specific stress response pathways that have been described in a wide range of bacteria is that they are energy demanding and therefore often transient. In addition, stress responses may come too late or be insufficient to protect the cell or the population against very sudden or severe stresses. However, it s...
Related newspaper, magazine, and journal articles from HighBeam Research
|
Sorbitol-Negative Shiga Toxin-Producing Escherichia coli in Beef Heifers Grazing Rangeland Forages
Professional Animal Scientist
; ... Literature Cited Acheson, D. W. K., and G. T. Keusch. 1996. Which Shiga toxin-producing types of E. coli are important? ASM News 62:302. Acheson, D. W. K., L. E. Wolf, and C. H. Park. 1997. Escherkhia coli and the hemolytic-uremic syndrome. New England ... associated with a rare Escherichia coli serotype. New England J ... .
|
|
Invited Review: Prevalence of Shiga Toxin-Producing Escherichia coli in Dairy Cattle and Their Products
Journal of Dairy Science
; ... Washington, 2000. Available: http:// www.ph.dhr.state.ga.us/epi/news/apr01/042401.shtml. Accessed Dec. 18, 2003. Griffin, P. M., and ... aims to keep bacteria out of hamburger. Available: http://www.news.cornell.edu/releases/May96/ beefQA.hrs.html. Accessed Jan. 19 ...
|
|
Exonuclease Requirements for Recombination of [lamda]-Phage in recD Mutants of Escherichia coli
Genetics
; ABSTRACT Recombination of λ red gam phage in recD mutants is unaffected by inactivation of RecJ exonuclease. Since nucleases play redundant roles in E. coli, we inactivated several exonucleases in a recD mutant and discovered that 5'-3' exonuclease activity of RecJ and exonuclease VII is
|
|
Shiga toxin producing Escherichia coli infection: Current progress & future challenges
Indian Journal of Medical Research
; Shiga toxin producing Escherichia coli (STEC) is a newly emerged pathogen that has been the focus of immense international research effort driven by its recognition as a major cause of large scale epidemics and thousands of sporadic cases of gastrointestinal illness. It produces a severe bloody
|
|
|
The Non-O157 Shiga-Toxigenic (Verocytotoxigenic) Escherichia coli; Under-Rated Pathogens
Critical Reviews in Microbiology
; Following a brief review of the ecology of Escherichia coli in general, the role of Shiga-Toxigenic (Verocytotoxigenic) E. coli (STEC) as pathogens is addressed. While STEC belonging to the serogroup O157 have been extensively studied and shown to be involved in many cases and outbreaks of human
|
|
|
Incidence of Escherichia coli O157:H7 and E. coli Virulence Factors in US Bulk Tank Milk as Determined by Polymerase Chain Reaction1
Journal of Dairy Science
; ABSTRACT Samples of bulk tank milk from dairies across the United States, taken as part of the National Animal Health Monitoring Dairy 2002 survey, were analyzed for the presence of several genes encoding virulence factors associated with enterohemorrhagic forms of Escherichia coli (EHEC) using
|
|
|
Mathematical Model of the Acute Inflammatory Response to Escherichia coli in Intramammary Challenge
Journal of Dairy Science
; ABSTRACT We constructed a mathematical model of the early response to Escherichia coli infection of the mammary gland and explored the roles and interactions between inflammatory cells and bacteria. The model incorporates 3 equations that describe the interactions among bacteria, milk somatic
|
|
|
Chi Hotspot Activity in Escherichia coli Without RecBCD Exonuclease Activity: Implications for the Mechanism of Recombination
Genetics
; ABSTRACT The major pathway of genetic recombination and DNA break repair in Escherichia coli requires RecBCD enzyme, a complex nuclease and DNA helicase regulated by Chi sites (5'-GCTGGTGG-3 During its unwinding of DNA containing Chi, purified RecBCD enzyme has two alternative nucleolytic
|
|
|
The Escherichia coli Histone-like Protein HU Has a Role in Stationary Phase Adaptive Mutation
Genetics
; ABSTRACT Stationary phase adaptive mutation in Escherichia coli is thought to be a mechanism by which mutation rates are increased during stressful conditions, increasing the possibility that fitness-enhancing mutations arise. Here we present data showing that the histone-like protein, HU, has a
|
|
|
Escherichia coli heat stable enterotoxin receptors & guanylyl cyclase activity in the intestinal brush border membrane of hamsters & guinea pigs
Indian Journal of Medical Research
; Background & objectives: Although Escherichia coli heat stable enterotoxin (STa) causes diarrhoea in laboratory animals, no studies were done to find out the species specific variation of distribution of the STa receptors in laboratory animals. The present investigation evaluates the density of
|