Comparison of Y. lipolytica ZetaW (control), ZetaB 1 (P
-BGL1) and ZetaB 2 (P
-BGL2) during aerobic growth on 5 g/L a glucose, b cellobiose, c cellotriose, d cellotetraose, e cellopentaose and f cellohexaose as carbon and energy source. Shown is OD600nm, optical density at 600 nm, versus time. Each data point represents the mean of at least three independent experiments and the standard deviation is less than 5%.