Proton extrusion and attendant transport phenomena in Candida utilis induced by ethanol |
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| Authors: | Aleš Prell Jan Páca Karel Sigler |
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| Affiliation: | (1) Czechoslovak Academy of Sciences, Institute of Microbiology, CS-142 20 Prague 4, Czechoslovakia;(2) Department of Fermentation Chemistry and Bioengineering, Institute of Chemical Technology, CS-166 28 Prague 6, Czechoslovakia |
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| Abstract: | Summary Ion fluxes after ethanol addition to Candida utilis depend crucially on aeration (air versus oxygen). In O2-aerated non-growing cells ethanol causes an H + / K + exchange and an extrusion of acetate and lactate accompanied mostly by K +, and their subsequent reimportation together with H +. Cells from continuous culture display generally stronger acidification and more marked K + movements than non-growing ones.Offprint requests to: A. Prell |
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