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Transport of diphosphate anions in yeast cells

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Abstract

The diphosphate anion was transported intoSaccharomyces cerevisiae, Endomyces magnusii andRhodotorula glutinis by mechanisms showing pH optima 3.7 and 6.7. InS. cerevisiae at pH 5.5 there appear to be two uptake systems with half-saturation constants of 5 —20 μm and 0.16 — 0.22 mm, the former being stimulated by Na+ ions. Both uptakes show a temperature transition point at 21 °C. Diphosphate anions display mutual competition with monophosphate and arsenate anions. The presence of d-glucose was required for the uptakes to take place. Diphosphate anions thus appear to use both monophosphate transport systems of baker’s yeast to enter the cell.

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Authors and Affiliations

  1. Department of Membrane Transport, Institute of Physiology, Czechoslovak Academy of Sciences, 142 20, Prague 4

    A. Knotková & A. Kotyk

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  1. A. Knotková
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  2. A. Kotyk
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Knotková, A., Kotyk, A. Transport of diphosphate anions in yeast cells. Folia Microbiol 30, 338–341 (1985). https://doi.org/10.1007/BF02927587

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  • DOI: https://doi.org/10.1007/BF02927587

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