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Haem synthesis during mitochondrogenesis in yeast

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PMC
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  • Biology
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Abstract

The activities of δ-aminolaevulate synthetase and δ-aminolaevulate dehydratase have been assayed in Saccharomyces cerevisiae during glucose repression and de-repression. δ-Aminolaevulate dehydratase increased concomitantly with the increase in oxygen uptake during the de-repression phase caused by the depletion of glucose in the medium. δ-Aminolaevulate synthetase showed an oscillatory behaviour and a spurt in its activity always preceded the increase in oxygen uptake. The activity of both the enzymes was lowered if the cells were incubated with glucose or cycloheximide, but not with chloramphenicol.

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