FIG. 3.

Stimulation of K. lactis CBS2359 zero-trans lactose uptake rates by preincubation of the yeast suspension with glucose. The yeast suspension was first equilibrated for 10 min at 30°C, after which glucose was added to a final concentration of 11 mM (white columns) or 27 mM (gray columns). Lactose uptake assays (30°C, 20 mM lactose) were then performed after further incubation of the suspension at 30°C for the times indicated. Results of control experiments, without glucose addition, are also shown (striped columns). Error bars show the range of duplicate assays.