Table 2. Kinetic and binding parameters of CENTG1 GLD and mutants.
Protein | Substrate | pH | Vmax (μM·min−1) | kcat (min−1) | Km (μM) | kcat/Km (μM−1·min−1) |
---|---|---|---|---|---|---|
Wild-type | GTP | 7.0 | 2.16 | 21.40 | 541 | 0.039 |
8.0 | 0.43 | 4.62 | 442 | 0.010 | ||
6.0 | 0.47 | 4.67 | 427 | 0.010 | ||
Wild-type | ATP | 7.0 | 1.91 | 19.60 | 412 | 0.047 |
8.0 | 0.45 | 4.89 | 378 | 0.013 | ||
6.0 | 0.48 | 4.53 | 412 | 0.011 | ||
Wild-type | UTP | 7.0 | 2.81 | 28.62 | 517 | 0.055 |
8.0 | 0.65 | 6.73 | 467 | 0.014 | ||
6.0 | 0.36 | 3.57 | 449 | 0.007 | ||
Wild-type | CTP | 7.0 | 1.71 | 16.14 | 601 | 0.026 |
8.0 | 0.33 | 3.06 | 516 | 0.006 | ||
6.0 | 0.34 | 3.41 | 505 | 0.006 | ||
T101P | GTP | 7.0 | 0.076 | 0.74 | 990 | |
8.0 | 0.012 | 0.12 | 889 | |||
6.0 | 0.017 | 0.14 | 901 | |||
T101A | GTP | 7.0 | 0.089 | 1.08 | 2681 | |
8.0 | 0.037 | 0.41 | 4026 | |||
6.0 | 0.030 | 0.34 | 3062 |