Sv. Hetherington et al., SEQUENCE AND ANALYSIS OF THE RPOB GENE OF MYCOBACTERIUM-SMEGMATIS, Antimicrobial agents and chemotherapy, 39(9), 1995, pp. 2164-2166
The rpoB gene encodes the beta subunit of the DNA-dependent RNA polyme
rase of bacteria. Mutations in defined areas result in resistance to r
ifampin. Mycobacterium smegmatis is naturally resistant to rifampin, b
ut analysis of the rpoB gene revealed no identifiable rifampin resista
nce mutations. Another mechanism of resistance mag be present.