Journal of Bacteriology, November 1999, p. 6840-6843, Vol. 181, No. 21
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Department of Microbiology1 and National Food Biotechnology Centre,2 University College Cork, Cork, Ireland
Received 12 July 1999/Accepted 25 August 1999
lisRK encodes a two-component regulatory system in the food pathogen Listeria monocytogenes LO28. Following identification of the operon in an acid-tolerant Tn917 mutant, a deletion in the histidine kinase component was shown to result in a growth phase variation in acid tolerance, an ability to grow in high ethanol concentrations, and a significant reduction in virulence.
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