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Lack of lactate-proton symport in pck1 mutants of Saccharomyces cerevisiae

AuthorsCasal, Margarida; Blázquez, Miguel Ángel ; Gamo, Francisco-Javier; Leão, Cecília
Issue Date1995
CitationFEMS Microbiology Letters 128(3): 279-282 (1995)
AbstractMutants of Saccharomyces cerevisiae without phosphoenolpyruvate carboxykinase activity showed no measurable lactate proton symport, while mutants without fructose-1,6-bisphosphatase had normal transport activity. Incubation of a pck1 mutant, under derepression conditions in the presence of glycerol, restored the activity of the lactate-proton symport, with identical kinetic characteristics to that in the wild-type. For efficient lactate-proton symport activity, not only is an external inducer such as lactic acid needed, but also a molecule derived from the acid metabolism may be necessary.
Identifiersdoi: 10.1111/j.1574-6968.1995.tb07536.x
issn: 0378-1097
e-issn: 1574-6968
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