What is the value of the mer operon to, Ask an Expert

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Pseudomonas has a plasmid containing the mer operon which includes the gene for mercuric reductase. This enzyme catalyzes the reduction of the mercuric ion hg2+ to the uncharged form of the mercury,hg0. Hg2+ is quite toxic to cells;Hg0 is not.

A) What do you suppose is the inducer for this operon?
B) The proteins encoded by one of the mer genes binds Hg2+ in the periplasm and brings it into the cell. Why would a cell bring in a toxin?
C) What is the value of the mer operon to pseudomonas?

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Category:- Biology
Reference No.:- M9682806

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