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. 1999 Mar 2;96(5):1983–1988. doi: 10.1073/pnas.96.5.1983

Figure 3.

Figure 3

Copper-phenanthroline footprinting of the arc operator at 22°C by wild-type Arc-st11 and the multiple-alanine mutants at protein concentrations of 1 μM in Tris⋅HCl (pH 7.5), 3 mM MgCl2, 100 mM KCl, 0.1 mM EDTA, 100 μg/ml BSA, and 0.02% Nonidet P-40.