Journal of Bacteriology 2001-04-01

FosB, a cysteine-dependent fosfomycin resistance protein under the control of sigma(W), an extracytoplasmic-function sigma factor in Bacillus subtilis.

M Cao, B A Bernat, Z Wang, R N Armstrong, J D Helmann

Index: J. Bacteriol. 183 , 2380-2383, (2001)

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Abstract

We demonstrate that the Bacillus subtilis fosB(yndN) gene encodes a fosfomycin resistance protein. Expression of fosB requires sigma(W), and both fosB and sigW mutants are fosfomycin sensitive. FosB is a metallothiol transferase related to the FosA class of Mn(2+)-dependent glutathione transferases but with a preference for Mg(2+) and L-cysteine as cofactors.