Effects of pH and energy supply on activity and amount of pyruvate formate-lyase in Streptococcus bovis
Article Abstract:
Results show that Streptococcus bovis responds to low pH and excess energy conditions by shifting from fermentative pathway producing acetate, formate, and ethanol to lactate production.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2000
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Molecular characterization, enzyme properties and transcriptional regulation of phosphoenolpyruvate carboxykinase and pyruvate kinase in a ruminal bacterium, Selenomonas ruminantium
Article Abstract:
Research delineates the gene expression, regulation, and enzyme properties of phosphoenolpyruvate carboxykinase (Pck) and pyruvate kinase (Pyk) in the methanogenic bacterium Selenomonas ruminantium. Results show that both pck and pyk genes are monocistronic with varying amounts of mRNA production, which is affected by the energy substrate.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 2001
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Molecular characterization of CcpA and involvement of this protein in transcriptional regulation of lactate dehydrogenase and pyruvate formate-lyase in the ruminal bacterium Streptococcus bovis
Article Abstract:
The ccpA gene that encodes global catabolite control protein A (CcpA) in Streptococcus bovis is identified and characterized and the involvement of CcpA in trancriptional control of a gene (ldh) encoding lactate dehydrogenase (LDH) and a gene (pfl) encoding pyruvate formate-lyase (PFL) is investigated. The analysis suggests that CcpA appears to be involved in the global regulation of sugar utilization in S. bovis.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2004
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