Abstract
Wild-type yeast cells are unable to take up sterols from their growth media under aerobic conditions and are relatively resistant to monovalent cations. A yeast mutant (upc2-1) with a defect in the aerobic exclusion of sterols was found to have increased sensitivity to LiCl and NaCl. Although cation sensitivity has been reported for mutants that synthesize altered sterols, the mutant with upc2-1 continues to produce the normal sterol, ergosterol. The ENA2 gene was cloned on the basis of remediating the hypersensitivity to the monovalent cations.
Publication types
-
Research Support, Non-U.S. Gov't
-
Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
-
Adenosine Triphosphatases / genetics*
-
Cholesterol / pharmacokinetics
-
Dose-Response Relationship, Drug
-
Genes, Fungal / genetics*
-
Genetic Complementation Test
-
Lithium Chloride / pharmacology*
-
Mutation
-
Saccharomyces cerevisiae / drug effects*
-
Saccharomyces cerevisiae / genetics
-
Saccharomyces cerevisiae / metabolism
-
Saccharomyces cerevisiae Proteins*
-
Sodium Chloride / pharmacology*
-
Sterols / pharmacokinetics
-
Trans-Activators / genetics*
Substances
-
Saccharomyces cerevisiae Proteins
-
Sterols
-
Trans-Activators
-
UPC2 protein, S cerevisiae
-
Sodium Chloride
-
Cholesterol
-
Adenosine Triphosphatases
-
Lithium Chloride