Table I. Gliding velocities and steady state ATPase activities of NcKin wild-type and relevant mutants.
| Construct | Gliding velocity (µm/s) | kcat (s–1) | Km,ATP (µM) | Basal activity k0 (s–1) |
|---|---|---|---|---|
| NcKin433 (wild type) | 2.2 ± 0.2 | 74 ± 8 | 90 ± 13 | 0.017 ± 0.001 |
| NcKin433-Y362K | 1.0 ± 0.2 | 262 ± 7 | 90 ± 10 | 0.027 ± 0.000 |
| NcKin433-Y362C | –a | 176 ± 52 | ND | ND |
| NcKin433-Y362F | 1.6 ± 0.3 | 32 ± 15 | ND | ND |
| NcKin433-F359C | –a | 66 ± 31 | ND | ND |
| NcKin383 | 0.8 ± 0.2b | 24 ± 4b | ND | ND |
| NcKin383-Y362K | –a | 157 ± 0 | ND | ND |
The values are averages of at least two independent measurements.
aBiotinylation impossible.
bData from Kallipolitou et al. (2001).