FIG. 8.

Modifications in gene expression by comparisons of results from the earlier time points of the N-limiting versus control fermentations (time points 4 and 1). The yeast genes encoding the enzymes that catalyze each step in this metabolic circuit are identified by the names in the boxes. Green boxes with white letters identify genes whose expression is significantly higher at time point 4 of the N-limiting condition. White boxes with green letters identify genes whose expression is higher, but not significantly so, at that time point. Red boxes with white letters identify genes whose expression is significantly lower at time point 4 of the N-limiting condition. White boxes with red letters identify genes whose expression is lower, but not significantly so, at that time point. The magnitude of induction or repression is indicated only for significantly changed genes. For multimeric enzyme complexes, the indicated change (n-fold) represents an average for all the genes listed in the box. Black boxes and white letters indicate genes for which expression information was not available in one of the conditions. CoA, coenzyme A.