Arsenic compounds have been abundant at near toxic level in the environment since the origin of life. In response, microbes have evolved mechanism for arsenic resistance and produce enzyme that oxidizes As(III) to As(V) or reduces As (V) to As(III). Living cells specially microbes carry out redox and covalent bond chemistry and are important players in the arsenic geocycle. Bacteria overcome the toxic effects of arsenite and arsenate by decreasing the intracellular concentration of these ions either by preventing intake or actively exporting the arsenicals or by chemical modification to...
Arsenic compounds have been abundant at near toxic level in the environment since the origin of life. In response, microbes have evolved mechanism for...