Fig. 3.

GlxR activates expression of pfk (cgR_1327), gapA (cgR_1636), and aceE (cgR_2120). The β-galactosidase activities of C. glutamicum strains chromosomally carrying promoters of the genes, which were fused with the lacZ reporter gene, were measured. Activities derived from the native (open symbols) or GlxR-binding site-mutated (closed symbols) promoters during growth in nutrient-rich A medium with 1% glucose (circles) or acetate (triangles) are shown. The activity is the mean value from at least three independent cultivations. Error bars indicate standard deviations.