Article
Streptococcus salivarius urease expression: involvement of the phosphoenolpyruvate:sugar phosphotransferase system.
FEMS microbiology letters - 1 Aug 1998
Chen Y Y, Hall T H, Burne R A
Abstract excerpt
Urease expression in Streptococcus salivarius 57.1 is induced by acidic pH, and further enhanced at high growth rate and with excess carbohydrate. Notably, the phosphoenolpyruvate (PEP):sugar phosphotransferase system (PTS) activity is repressed in oral streptococci under the same conditions. To test the hypothesis that the PTS may be involved in urease regulation, spontaneous mutants (PTS-1 and PTS-4) that were...
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