Oxidative stress is strongly implicated in a number of diseases, such as rheumatoid arthritis,
inflammatory bowel disorders, and atherosclerosis, and its emerging as one of the most …

Bacteria are nutritionally starved most of the time and maintain fast growth rates during
availability, surviving prolonged periods of starvation as a result of elaborate physiological …

The σS (RpoS) subunit of RNA polymerase is the master regulator of the general stress
response in Escherichia coli and related bacteria. While rapidly growing cells contain very …

Geochemical cycling and industrial pollution have made toxic metal ions a pervasive
environmental pressure throughout the world. Biofilm formation is a strategy that …

Excessive hydrogen peroxide is harmful for almost all cell components, so its rapid and
efficient removal is of essential importance for aerobically living organisms. Conversely …

Cyclic AMP (cAMP) is found in a variety of prokaryotes including both eubacteria and
archaebacteria. cAMP plays a role in regulating gene expression, not only for the classic …

Escherichia coli generates about 14 μM hydrogen peroxide (H2O2) per s when it grows
exponentially in glucose medium. The steady-state intracellular concentration of H2O2 …

The mechanism by which methionine relieves the growth inhibition of Escherichia coli K-12
that is caused by organic weak acid food preservatives was investigated. In the presence of …

Escherichia coli K-12 strains and Shigella flexneri grown to stationary phase can survive
several hours at pH 2 to 3, which is considerably lower than the acid limit for growth (about …

The second vegetative sigma factor sigma S (encoded by the rpoS gene) is the master
regulator in a complex regulatory network that governs the expression of many stationary …