Figure 5
From: Reconstruction of xylose utilization pathway and regulons in Firmicutes
Complementation of E. coli mutants deficient in xylose isomerase or xylulokinase by C. acetobutylicum genes. The empty vector was expressed in the same strain as a negative control. The ability of xylose utilization was tested using MacConkey agar supplemented with 10 g l-1 xylose. The colonies of cells with the ability in xylose utilization showed red color, whereas the colonies of cells unable to utilize xylose keep yellow.