General Mechanisms of Microbial resistance to metals

In this review is presented general mechanism of bacterial resistence against metals. Bacteria was adapting to outer conditions during the evolotion. Ability of resistence is carried by genetic informations in DNA which may be located in different parts of cell. According to character of resistence there are different localization of genetic information where metal resistance is coded. It dependes on the fact if the metal is essential or non-essential (plasmid, chromosome, transposome). There are six postulated mechanisms of metal resistence in microorganisms, metal exclusion by permeability barrier, active transport of metal away from the cell, intracellular sequeatration of the metal by protein biding, extracellular sequestration, enzymatic detoxification to less toxic form, reduction in metal sensitivity of cellular targets.

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