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  • Title: General and lysin specific control of saccharopine dehydrogenase levels in the yeast Saccharomycopsis lipolytica.
    Author: Gaillardin CM, Poirier L, Ribet AM, Heslot H.
    Journal: Biochimie; 1979; 61(4):473-82. PubMed ID: 486578.
    Abstract:
    Lysine supplementation of the growth medium of a wild type strain of the yeast Saccharomycopsis lipolytica specifically results in saccharopine dehydrogenase repression. Starvation of the strain for histidine triggers a general depression of various histidine, leucine, arginine and lysine biosynthetic enzymes, including saccharopine dehydrogenase. These two types of control, specific and general, act independently on saccharopine dehydrogenase expression, since mutants which fail to respond to the specific control still are sensitive to the general one. These mutants were first selected as unable to catabolize lysine, suggesting that a link may exist between saccharopine dehydrogenase specific regulation and activity of the catabolic pathway.
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