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Literature DB >> 790160

Regulation of the level of yeasts citrate synthase by oxygen availability.

I Nuñez de castro, J M Arias de Saavedra, A Machado, F Mayor.

Abstract

The activity of yeasts citrate synthase in cells grown under different hypoxic conditions has been investigated. A linear relationship between the citrate synthase activity and the respiratory capacity of the cells has been found. When Saccharomyces cerevisiae was grown on fermentable substrates the activity decreased as the concentration of sugars in the medium increased. The enzyme of the yeast Rhodoturula showed a high activity in spite of the existence of high sugar concentration in the culture medium. Neither feed-back repression by glutamate nor feed-forward induction by ammonia has been found in bakers' yeast. The results suggest that the regulation of the enzyme by oxygen availability takes place by the ""de novo'' synthesis of the enzyme.

Entities: Chemical Disease Species

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Year: 1976 PMID： 790160 DOI： 10.1007/bf01741714

Source DB: PubMed Journal: Mol Cell Biochem ISSN： 0300-8177 Impact factor: 3.396

21 in total

1. The utilization by yeasts of acids of the tricarboxylic acid cycle.

Authors: J A BARNETT; H L KORNBERG
Journal: J Gen Microbiol Date: 1960-08

2. Succinic acid production by yeasts grown under different hypoxic conditions.

Authors: J A Lupiañez; A Machado; I Nuñez de Castro; F Mayor
Journal: Mol Cell Biochem Date: 1974-04-15 Impact factor: 3.396

3. Metabolism of the obligatory aerobic yeast Rhodotorula gracilis. I. Changes in metabolite concentrations following D-glucose and D-xylose addition to the cell suspension.

Authors: M Höfer; A Betz; J U Becker
Journal: Arch Mikrobiol Date: 1970

4. Regulation of citrate synthase activity in escherichia coli.

Authors: P D Weitzman
Journal: Biochim Biophys Acta Date: 1966-10-17

5. Effects of oxygen tension and glucose repression of mitochondrial protein synthesis in continuous cultures of Saccharomyces cerevisiae.

Authors: P J Rogers; S B Yue; P R Stewart
Journal: J Bacteriol Date: 1974-05 Impact factor: 3.490

4. Intramitochondrial functions regulate nonmitochondrial citrate synthase (CIT2) expression in Saccharomyces cerevisiae.

Authors: X S Liao; W C Small; P A Srere; R A Butow
Journal: Mol Cell Biol Date: 1991-01 Impact factor: 4.272

4 in total

Regulation of the level of yeasts citrate synthase by oxygen availability.

1. The utilization by yeasts of acids of the tricarboxylic acid cycle.

2. Succinic acid production by yeasts grown under different hypoxic conditions.

3. Metabolism of the obligatory aerobic yeast Rhodotorula gracilis. I. Changes in metabolite concentrations following D-glucose and D-xylose addition to the cell suspension.

4. Regulation of citrate synthase activity in escherichia coli.

5. Effects of oxygen tension and glucose repression of mitochondrial protein synthesis in continuous cultures of Saccharomyces cerevisiae.

6. The inhibition of citrate synthase by adenosine triphosphate.

7. Evidence for two immunologically distinct acetyl-co-enzyme A synthetase in yeast.

8. Effect of inhibitors of mitochondrial protein synthesis on the NADH and NADPH glutamate dehydrogenases in yeast.

9. Purification of rat heart and rat liver citrate synthases. Physical, kinetic, and immunological studies.

10. Coarse and fine control of citrate synthase from Bacillus subtilis.

1. Development of NADPH-producing pathways in rat heart.

2. Saccharomyces cerevisiae contains two functional citrate synthase genes.

3. L-Alanine as an end product of glycolysis in Saccharomyces cerevisiae growing under different hypoxic conditions.

4. Intramitochondrial functions regulate nonmitochondrial citrate synthase (CIT2) expression in Saccharomyces cerevisiae.