Table 1.
Steady-state actin-activated ATPase activities of myosin constructs
| Myosin | Vmax (s−1) | KATPase (μM) | Vmax /KATPase (s−1 μM−1) |
|---|---|---|---|
| S619C | 7.2 ± 0.3 | 13.0 ± 1.7 | 0.55 ± 0.05 |
| S619C-IQ | 3.2 ± 0.2 | 17.3 ± 2.5 | 0.18 ± 0.03 |
| T688C | 10.6 ± 0.4 | 45.3 ± 2.3 | 0.23 ± 0.02 |
| T688C/678C | 19.2 ± 0.5 | 65.4 ± 2.4 | 0.29 ± 0.02 |
| M761 | 1.8 ± 0.6 | 35.1 ± 21.3 | 0.05 ± 0.02 |
| M761-2R | 7.7 ± 0.7 | 59.0 ± 8.2 | 0.13 ± 0.02 |
| Muscle S1 | 19.5± 1.0 | 15.8 ± 2.3 | 1.23 ± 0.18 |