The specificity of induction of β-glucosidase in Saccharomyces cerevisiae

The kinetics and stereospecificity of gratuitos induction of β-glucosidase in S. cerevisiae strain Yeast Foam have been studied. Enzyme synthesis, following the addition of either methyl- or ethyl-β- d-thioglucoside as inducers, is constant and proportional to increases in cell mass. The differential rate of enzyme synthesis is dependent upon the concn. and type of the inducer. A comparison of the stereospecificity of the induction process and of the enzyme itself indicates that induction is independent of enzyme action. Phenyl-β- d-thioglucoside was found to be a competitive inhibitor of enzyme induction.