DNA EMSA of RmpA2 and its target promoters. The 32P-labeled DNA probes of PrmpA2, Porf3-15, or Porf1-2 were incubated with the full-length His-RmpA2212 (A) or the C-terminally truncated His-RmpA2N111 (B). Lanes 1 to 3 contain RmpA2 amounts of 0, 50 ng, and 500 ng, respectively. The arrow indicates the protein-DNA complex.