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Curr Genet. 1983 Jul;7(4):323-5. doi: 10.1007/BF00376078.

Some genetical and biochemical attempts to elucidate the energetics of sugar uptake and explain the Kluyver effect in the yeast Kluyveromyces lactis.

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Physiologisch-chemisches Institut, Universität Tübingen, D-7400, Tübingen, Germany.


A mutant of Kluyveromyces lactis is described which did not grow with substrates giving the Kluyver effect. In addition it could not grow with non-fermentable carbon sources, although it was not respiratory deficient. Abolition of respiration by cyanide also caused inability to grow with substrates showing the Kluyver effect in the wild-type strain. When the yeasts were using substrates showing the Kluyver effect, shifting to anaerobic conditions gave an immediate decrease in the intracellular concentration of D-glucose 6-phosphate. The results obtained were consistent with the need of a common respiratory and/or anabolic pathway for the utilization of these substrates.


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