Table 2. Steady-state kinetic parameters of RAD51-catalyzed ATP hydrolysis in the presence of ssDNA.
WT | D149N | R150Q | G151D | |
---|---|---|---|---|
kcat (min−1) | 0.28 ± 0.01 | 0.25 ± 0.01 | 0.16 ± 0.01 | 0.17 ± 0.01 |
Km (μM ATP) | 20 ± 3 | 20 ± 3 | 76 ± 12 | 67 ± 9 |
kcat/Km (s−1 × M−1) | 230 | 210 | 34 | 41 |
All data were derived from computer fits of steady-state ATPase curves as shown in Figure 3A and as described in ‘Materials and Methods’ section. Each value represents the average (± standard deviation) from three different experiments.