Bacteria have to cope with oxidative stress caused by distinct Reactive Oxygen Species
(ROS), derived not only from normal aerobic metabolism but also from oxidants present in …

Oxic environments are hazardous. Molecular oxygen adventitiously abstracts electrons from
many redox enzymes, continuously forming intracellular superoxide and hydrogen peroxide …

Free radicals and other active derivatives of oxygen are inevitable by-products of biological
redox reactions. Reactive oxygen species inactivate enzymes and damage important …

Free radicals and other active derivatives of oxygen are inevitable by‐products of biological
redox reactions. Reduced oxygen species, such as hydrogen peroxide, the superoxide …

Under conditions of nutrient deprivation or stress, or as cells enter stationary phase,
Escherichia coli and related bacteria increase the accumulation of RpoS, a specialized …

Publisher Summary The availability of a spectrophotometric assay for superoxide dismutase
(SOD) activity and of an activity stain applicable to polyacrylamide gels facilitated the …

Genetic Characterization................................................ Physical Characterization..........................
..................... Biochemical Characterization............................................ Variability in …

Bacteria are often found associated with surfaces as sessile bacterial communities called
biofilms, and the formation of a biofilm can be split up into different stages each requiring the …

The major regulator controlling the physiological switch between aerobic and anaerobic
growth conditions in Escherichia coli is the DNA binding protein FNR. To identify genes …

KatF is required for the expression of some 32 carbon starvation proteins in Escherichia coli
including 6 previously identified as Pex. Mutants with the katF gene survive carbon and …