Inventors:
James E. Hopper - Lebanon PA
Loren D. Schultz - Harleysville PA
Kathryn J. Hofmann - King of Prussia PA
Ronald W. Ellis - Overbrook Hills PA
International Classification:
C12P 2102, C12N 1500, C12N 114, C12N 116, C12N 118, C12N 1581, C12N 119
Abstract:
The GAL4 protein is rate-limiting in quantity as a positive regulator for galactose-inducible promoters in strains of yeast. Novel strains are described in which the GAL4 protein can be overproduced in a regulatable fashion. These strains are useful for the regulatable expression in yeast of heterologous genes whose expression is driven by a galactose-inducible promoter.