Bacterial plasmids encode resistance systems for toxic metal ions including Ag+, AsO2−,
AsO43−, Cd2+, Co2+, CrO42−, Cu2+, Hg2+, Ni2+, Pb2+, Sb3+, TeO32−, Tl+, and Zn2+. In …

Heavy metal (loid) s exert selective pressure on microbial communities and evolution of
metal resistance determinants. Despite increasing knowledge concerning the impact of …

Metalloproteins play structural and catalytic roles in gene expression. The metalloregulatory
proteins are a subclass that exerts metal-responsive control of genes involved in respiration …

The chromosomally encoded arsenical resistance (ars) operon subcloned into a multicopy
plasmid was found to confer a moderate level of resistance to arsenite and antimonite in …

Arsenic is the most pervasive environmental substance and is classified by the International
Agency for Research on Cancer as a Group 1 human carcinogen. Nearly every organism …

A biosensor is a measurement device or system that is composed of a biological sensing
component, which recognizes a chemical or physical change, coupled to a transducing …

Arsenic ions, frequently present as environmental pollutants, are very toxic for most
microorganisms. Some microbial strains possess genetic determinants that confer …

Arsenic is the most prevalent environmental toxic substance and ranks first on the US
Environmental Protection Agency's Superfund List. Arsenic is a carcinogen and a causative …

The arsenic resistance operon of Staphylococcus aureus plasmid pI258 consists of three
genes, arsR (encoding the repressor regulatory protein), arsB (the determinant of the …

Bacterial species have genetically-determined systems for resistances to toxic heavy metals.
Those for metals of environmental concern including mercury cadmium, arsenic and others …