FIG. 2.

Heterologous complementation assays of E. coli fabZ KO mutant. In E. coli HW7, the lethal disruption of fabZ_Ec has first been complemented by fabZ_Ca under the control of an arabinose promoter that is induced by arabinose and repressed by fucose (35). The strain was then cotransformed by either the Rv0241c gene, the expression vector (pBSK+) alone, or wt fabZ_Ec and grown on RB agar supplemented with arabinose or fucose, as indicated. The photographs are representative of three independent experiments.