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Effect of aeration on the activity of gluconeogenetic enzymes in Saccharomyces cerevisiae growing under glucose limitation.
- Source :
-
Archives of microbiology [Arch Microbiol] 1975 Dec 31; Vol. 106 (3), pp. 271-3. - Publication Year :
- 1975
-
Abstract
- 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.
- Subjects :
- Aerobiosis
Anaerobiosis
Enzyme Repression
Fructose-Bisphosphatase biosynthesis
Glucose pharmacology
Isocitrates
Oxo-Acid-Lyases biosynthesis
Phosphoenolpyruvate Carboxykinase (GTP) biosynthesis
Pyruvate Carboxylase biosynthesis
Gluconeogenesis
Glucose metabolism
Saccharomyces cerevisiae enzymology
Subjects
Details
- Language :
- English
- ISSN :
- 0302-8933
- Volume :
- 106
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Archives of microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 175748
- Full Text :
- https://doi.org/10.1007/BF00446534