FIGURE 4.

Negatively regulation of hlyU and hlyA by HapR. The luminescence assay (A) was done as Figure 2. The qRT-PCR (B) and DNase I footprinting assay (C) were done as Figure 3. Lanes-I, II, and III contain 0, 2.31, and 6.92 pmol His-HapR, respectively.