Figure 1
Monovalent cation-dependence of ATP hydrolysis catalyzed by MmRadA. The reaction solutions contained 5 mM ATP, a specified amount of a monovalent salt, 10 mM MgCl2 and 50 mM HEPES–Tris buffer pH 7.4. The solutions also contained 3 µM MmRadA. (a) Time courses of phosphate release in the presence of 100 mM of a specified monovalent salt and 1 µM poly-(dT)36. (b) Time courses in the presence of 1.0 M of a specified monovalent salt. DNA was absent. |