Figure 6.

Gelretardation assays using amtR upstream DNA variants. (1–3) 0.04 ng of native DNA, (4–6) amtR upstream DNA carrying a G to T exchange at position 2, (7–9) amtR upstream DNA with additional spacing nucleotide. (1, 4, 7) without AmtR-MBP, (2, 5, 8) with 150, (3, 6, 9) with 300 ng of AmtR-MBP.