FIG 2.

Comparison of E. coli strains for the production of d-glucose from 5 g/liter l-arabinose or 5 g/liter d-xylose. All strains are derived from ALS1048 (MG1655 ptsG manZ glk) and have additional gene knockouts as indicated. Strains which accumulated d-glucose were studied in 3 to 6 replicate cultures grown at 50 ml in a 250-ml shake flask, and error bars show the standard error of the measurements from these replicate samples. An asterisk indicates a significant difference (P < 0.10) in yield of d-glucose from d-xylose compared to from l-arabinose.