Abstract
Silver ions induce the efflux of potassium from cells of the yeast Saccharomyces cerevisiae but have no such effect on spheroplasts. Copper ions and the natural fungicide 2-O-3-hydroxyhexanoyl-β-D-glucopyranosyl-(1→4)-(6-O-acetyl-β-D-glucopyranosyl-(1→16)-2,15,16-trihydroxyhexadecanoic acid) induce the efflux of potassium ions from both cells and spheroplasts of S. cerevisiae. Silver and copper ions inhibit the activity of the plasma membrane H+-ATPase during the treatment of both cells and spheroplasts. It is supposed that the inability of silver ions to stimulate potassium efflux from spheroplasts results from damage to some components of K+ transport systems during preparation of spheroplasts.
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Abbreviations
- CL:
-
cellobiose lipid 2-O-3-hydroxyhexanoyl-β-D-glucopyranosyl-(1→4)-(6-O-acetyl-β-D-glucopyranosyl-(1→16)-2,15,16-trihydroxyhexadecanoic acid)
- EKP:
-
electrokinetic potential
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Original Russian Text © V. M. Vagabov, A. Yu. Ivanov, T. V. Kulakovskaya, E. V. Kulakovskaya, V. V. Petrov, I. S. Kulaev, 2008, published in Biokhimiya, 2008, Vol. 73, No. 11, pp. 1524–1528.
Originally published in Biochemistry (Moscow) On-Line Papers in Press, as Manuscript BM08-007, September 14, 2008.
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Vagabov, V.M., Ivanov, A.Y., Kulakovskaya, T.V. et al. Efflux of potassium ions from cells and spheroplasts of Saccharomyces cerevisiae yeast treated with silver and copper ions. Biochemistry Moscow 73, 1224–1227 (2008). https://doi.org/10.1134/S0006297908110084
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DOI: https://doi.org/10.1134/S0006297908110084