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  • Title: Synthesis of FUDP-N-acetylglucosamine and FUDP-glucose in Saccharomyces cerevisiae cells treated with 5-fluorouracil.
    Author: Günther Sillero MA, Pérez-Zúñiga F, Gomes J, de Carvalho AI, Martins S, Silles E, Sillero A.
    Journal: FEMS Yeast Res; 2008 Mar; 8(2):257-65. PubMed ID: 17995957.
    Abstract:
    Saccharomyces cerevisiae cells (strain W303-1A) treated with 5-fluorouracil and grown in 2% (fermentative conditions) or in 0.1% glucose (oxidative conditions) accumulated two types of 5-fluoro-UDP-sugars (FUDP-sugars): FUDP-N-acetylglucosamine and FUDP-glucose. No difference was observed in both conditions of culture. The viability of yeast cells on treatment with 5-fluorouracil was also followed. Both FUDP-sugars were partially purified by column chromatography (on Hypersil ODS and Mono Q columns) and characterized by: (i) treatment with alkaline phosphatase (EC 3.1.3.1), snake venom phosphodiesterase (EC 3.1.4.1) and UDP-glucose dehydrogenase (EC 1.1.1.22); (ii) UV spectra; and (iii) matrix-assisted laser desorption/ionization-time of flight mass analysis and 1H-nuclear magnetic resonance spectrometry. The syntheses of both FUDP-sugars were inversely related to the concentration of uracil and directly related to the concentration of 5-fluorouracil in the culture medium. The strain W303-1A, requiring uracil for growth, was useful as a tool to analyze the effect of 5-fluorouracil on nucleotide metabolism.
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