Nitric oxide (NO) is an important signaling molecule that is involved in a wide range of
physiological and pathological events in biology. Metal coordination chemistry, especially …

Antimicrobial resistance is one of the major problems in current practical medicine. The
spread of genes coding for resistance determinants among bacteria challenges the use of …

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 …

Pollution of soil and water environments by crude oil has been, and is still today, an
important problem. Crude oil is a complex mixture of thousands of compounds. Among them …

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

Anandamide (N-arachidonoylethanolamine) is known to be an endogenous ligand of
cannabinoid and vanilloid receptors. Its congeners (collectively referred to as N …

One strategy employed by bacterial strains to resist β-lactam antibiotics is the expression of
metallo-β-lactamases requiring Zn2+ for activity. In the last few years, many new zinc β …

Binuclear metallohydrolases are a structurally diverse group of enzymes that use binuclear
metal ion centers to catalyze the hydrolysis of amides and esters of carboxylic and …

-Lactamases represent the major cause of bacterial resistance against-lactam antibiotics,
and they have been divided into four classes (A to D) on the basis of their amino acid …