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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Multidrug resistance following expression of the Escherichia coli marA gene in Mycobacterium smegmatis.

Expression of the Escherichia coli multiple antibiotic resistance marA gene cloned in Mycobacterium smegmatis produced increased resistance to multiple antimicrobial agents, including rifampin, isoniazid, ethambutol, tetracycline, and chloramphenicol. Cloned marR or marA cloned in the antisense direction had no effect. Resistance changes were lost with spontaneous loss of the plasmid bearing marA. A MarA mutant protein, having an insertional mutation within either of its two alpha-helices of the first putative helix-turn-helix domain, failed to produce the multiresistance phenotype in E. coli and M. smegmatis, indicating that this region is critical for MarA function. These results strongly suggest that E. coli marA functions in M. smegmatis and that a mar-like regulatory system exists in this organism.[1]

References

  1. Multidrug resistance following expression of the Escherichia coli marA gene in Mycobacterium smegmatis. McDermott, P.F., White, D.G., Podglajen, I., Alekshun, M.N., Levy, S.B. J. Bacteriol. (1998) [Pubmed]
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