Food Science and Technology Department
Department of Food Science and Technology: Faculty Publications
Document Type
Article
Date of this Version
February 1997
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 (Km = 2.9 mM) was inhibited by 2-deoxyglucose and 6-deoxyglucose, whereas the high-affinity system (Km= 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.
Comments
Published in APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Feb. 1997, p. 543–546 Vol. 63, No. 2. Copyright 1997, American Society for Microbiology. Used by permission.