Listeria monocytogenes Scott A transports glucose by high-affinity and low-affinity glucose transport systems

Corrine Parker, Robert W. Hutkins

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

Listeria monocytogenes transported glucose by a high-affinity phosphoenolpyruvate-dependent phosphotransferase system and a low-affinity proton motive force-mediated system. The low-affinity system (K(m) = 2.9 mM) was inhibited by 2-deoxyglucose and 6-deoxyglucose, whereas the high-affinity system (K(m) = 0.11 mM) was inhibited by 2-deoxyglucose and mannose but not 6-deoxyglucose. Cells and vesicles artificially energized with valinomycin transported glucose or 2-deoxyglucose at rates greater than those of de- energized cells, indicating that a membrane potential could drive uptake by the low-affinity system.

Original languageEnglish (US)
Pages (from-to)543-546
Number of pages4
JournalApplied and environmental microbiology
Volume63
Issue number2
StatePublished - Feb 1 1997

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ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology
  • Ecology

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