Inducer expulsion and the occurrence of an HPr(Ser-P)-activated sugar-phosphate phosphatase in Enterococcus faecalis and Streptococcus pyogenes
Article Abstract:
Inducer expulsion refers to the phenomenon wherein adding a metabolizable carbohydrate to a microorganism's growth medium leads to the rapid efflux of pre-accumulated sugar-phosphates. Past studies have shown that this phenomenon occurs in Streptococcus pyogenes, Streptococcus bovis and Lactococcus lactics. It is shown that inducer expulsion also occurs in Enterococcus faecalis as a result of the action of the metabolite-activated ATP-dependent HPr(Ser) kinase, the same kinase which governs the occurrence of the phenomenon in Streptococcus pyogenes.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1996
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A hybrid response regulator possessing a PEP-dependent phosphorylation domain
Article Abstract:
A unique modular multidomain protein from Clostridium acetobutylicum was characterized. It supported elements determined from the photransferase system (PTS) and response regulators. It also exhibited sequence similarity with the NtrC family of response regulators in its two C-terminal domains. In addition, a HPr-response regulator was described to promote an example of a transcriptional regulator phosphorylated by the PTS.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1999
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