Table 1.
Substrate
|
Apparent limit of solubility (μM) | Autohydrolysis rate (pmol min−1) | HsEH kcat/Km (s−1 μM−1) | |
---|---|---|---|---|
Structure | #a | |||
2 | 25 < LS < 50 | 5.0 ± 0.3 | 0.093 ± 0.007 | |
3 | 50 < LS < 75 | 1.6 ± 0.4 | 0.115 ± 0.004 | |
4 | 25 < LS < 50 | 1.8 ± 0.4 | 0.027 ± 0.001 | |
5 | 25 < LS < 50 | 2.1 ± 0.4 | 0.194 ± 0.009 | |
6 | 25 < LS < 50 | 2.0 ± 0.4 | 0.00119 ± 0.00002 | |
7 | 15 < LS < 25 | 3.6 ± 0.7 | 0.556 ± 0.073 | |
8 | 25 < LS < 50 | 6.4 ± 0.3 | 0.554 ± 0.018 | |
9 | 15 < LS < 25 | 2.3 ± 0.1 | 0.387 ± 0.084 |
Note. Apparent limit of solubility (LS) was determined by photometric turbidity analysis at 800 nm. Autohydrolysis rates of 10-μM substrate solutions are given as averages ± standard deviations (n = 30). SpeciWcity constants kcat/Km values are provided as means ± standard deviations (n = 3).
Substrate numbers (#) correspond to those in Jones and coworkers [24].