Involvement of merB in the Expression of the pMR26 mer Operon Induced by Organomercurials

The inducibility by organomercury of the broad-spectrum mer operon on pMRA17 cloned from Pseudomonas K-62 plasmid pMR26 was assessed in the absence of a functional merB gene. The mer polypeptides encoded by the mer genes on pMRA17 were almost identified in maxicell induced not only by Hg2+ but also by C6H5Hg+ or CH3Hg+. Maxicell with pMRD103, a merB-deletion pl..