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. 2004 Jul;186(13):4399–4401. doi: 10.1128/JB.186.13.4399-4401.2004

FIG. 3.

FIG. 3.

Induction analysis of the dual regulation system. (A) Induction of β-Gal expression is shown in the presence of the respective inducers. β-Gal activity in the absence of tetR(BD)-i1.9 (pWH627) was set to 100% and represents about 2,500 Miller units. Open columns, no inducer; gray columns, 0.2 μM TET; black columns, 1.2 μM 4-DDMA-ATC; striped columns, 0.2 μM TET plus 2 μM 4-DDMA-ATC. (B) Induction of XynB expression in the presence of the inducers. XynB activity obtained in the absence of tetR(B)-4C (pWH1925-Δ) was set to 100% and represents about 10 Miller units.