Classically, superoxide anion O2•− and reactive oxygen species ROS play a dual role. At
the physiological balance level, they are a by-product of O2 reduction, necessary for cell …

Superoxide, O2•−, is formed in all living organisms that come in contact with air, and,
depending upon its biological context, it may act as a signaling agent, a toxic species, or a …

Redox reactions play important roles in almost all biological processes, including
photosynthesis and respiration, which are two essential energy processes that sustain all life …

Dissimilatory sulphate reduction is the unifying and defining trait of sulphate-reducing
prokaryotes (SRP). In their predominant habitats, sulphate-rich marine sediments, SRP have …

Oxygen is a key regulatory factor of anaerobic ammonium oxidation (anammox). Although
the inhibitory effect of oxygen is evident, a wide range of oxygen sensitivities of anammox …

Microbial anaerobes are exposed in the natural environment and in their hosts, even if
transiently, to fluctuating concentrations of oxygen and its derived reactive species, which …

Superoxide anion is among the deleterious reactive oxygen species, towards which all
organisms have specialized detoxifying enzymes. For quite a long time, superoxide …

Iron peroxide species have been identified as important intermediates in a number of
nonheme iron as well as heme-containing enzymes, yet there are only a few examples of …

A new five-coordinate,(N4S (thiolate)) FeII complex, containing tertiary amine donors,[FeII
(Me4 [15] aneN4)(SPh)] BPh4 (2), was synthesized and structurally characterized as a …

The microaerophilic protist Giardia intestinalis is the causative agent of giardiasis, one of the
most common intestinal infectious diseases worldwide. The pathogen lacks not only …