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Effect of aeration on the activity of gluconeogenetic enzymes inSaccharomyces cerevisiaegrowing under glucose limitation

✍ Scribed by Sampsa Haarasilta; Erkki Oura

Publisher
Springer
Year
1975
Tongue
English
Weight
270 KB
Volume
106
Category
Article
ISSN
0302-8933

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✦ Synopsis

  1. The effect of aeration on the key enzymes of gluconeogenesis was studied in baker's yeast (Saccharomyces cerevisiae) and in a nonrespiratory variant of S. cerevisiae grown under glucose limitation. 2. In baker's yeast phosphoenolpyruvate carboxykinase, hexosediphophatase and isocitrate lyase were completely repressed under anaerobic conditions. Their repression could be partially reversed by using intense aeration. 3. In the nonrespiratory variant these enzymes were absent independently of aeration. 4. Pyruvate carboxylase of baker's yeast showed maximal activity under anaerobic conditions. In the nonrespiratory variant pyruvate carboxylase had low activity under both anaerobic and aerobic conditions.

πŸ“œ SIMILAR VOLUMES

The effect of aeration intensity on the
The effect of aeration intensity on the biochemical composition of Baker's yeast: Activities of enzymes of the glycolytic and pentose phosphate pathways
✍ Erkki Oura πŸ“‚ Article πŸ“… 1976 πŸ› John Wiley and Sons 🌐 English βš– 305 KB πŸ‘ 2 views

## Abstract A series of baker's yeast continuous cultivations were made using different intensities of aeration. The experimental conditions were such as to eliminate the effects caused by high glucose concentrations in the medium on the formation of enzymes. The variation in activity of several en