Table 2. Enzyme kinetic parameters of native (MeHNL), designed S-HNLs, and SABP2 toward racemic mandelonitrilea.
Enzyme Name | kcat | Km | kcat/Km |
---|---|---|---|
min −1 | mM | min −1 mM −1 | |
SABP2 (G12T/M239K)b | 0.9 | 13 | 0.072 |
HNL85 | NDc | ND | ND |
HNL54 | 12 ± 0.6d | 3.2 ± 0.3 | 3.8 |
HNL30 | 156 ± 3 | 0.8 ± 0.1 | 195 |
MeHNL (WT)a | 2070 | 5.2 | 398 |
aThe parameters are cited from literature values reported by Asano et al.20.
bThe parameters are cited from literature values reported by Padhi et al.26.
cND means “not determined”.
dParameters were calculated by performing experiments in triplicate. The parameters are represented as averages ± standard deviations.