Fig. 6
A Relative transcript levels of putative xylose pathway genes in K. phaffii X-33 and K. populi CBS 12362. Transcript levels are given as fold change compared to the average SOR1 transcript level in K. phaffii X-33 grown in minimal medium with glucose. Error bars represent the standard deviation of three biological replicates shown as individual data points. B Specific enzyme activities of cell-free extracts prepared from cells grown in minimal medium with xylose. Cultures of the xylose utilizing yeast S. lignohabitans grown in the same medium were used as a control. Values are given as U mg−1 total protein. Errors represent the standard deviation of three biological replicates. Nd activity not detectable