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Updated: Jul 14, 2026

Quantitative Phosphoproteomics in Fatty Acid Stimulated Saccharomyces cerevisiae
Published on: October 12, 2009
Identification and characterization of phosphoenolpyruvate:fructose phosphotransferase systems in three Streptomyces
F Titgemeyer1, J Walkenhorst, J Reizer
1Department of Biology, University of California at San Diego, La Jolla 92093-0116.
Abstract:
Streptomyces lividans, S. coelicolor and S. griseofuscus were examined for the presence of the enzymes of the phosphoenolpyruvate:sugar phosphotransferase system (PTS). All three species were shown to possess Enzyme I, HPr and fructose-specific Enzyme II (IIFru) activities. In S. lividans and S. coelicolor, all three PTS enzymes were fructose-inducible, but in S. griseofuscus the system was expressed constitutively. These organisms apparently lack the HPr(Ser) kinase and HPr(Ser-P) phosphatase that characterize low-GC Gram-positive bacteria.
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