Figure 1

Recombinant xylose-metabolising S. cerevisiae in aerobic batch cultures on xylose (A) and glucose (B) showing concentrations (g l^-1) of A) xylose (■), cellular dry weight; DW (▲), ethanol (□) and xylitol (○) and B) glucose (■), cellular dry weight; DW (▲), and ethanol (□). Cultures were maintained at pH 5.5, 30°C, 500 rpm, 0.33 volume air [volume culture]^-1 min^-1. Data represent the average and standard deviation of three separate batch cultures on each carbon source. The arrows indicate times at which samples were taken for transcriptome and proteome analyses.