Table 1. Steady-state kinetic parameters for His6–PimD and other macrolide oxidases.
Enzyme | Substrate | kcat (s−1) | Km (μM) | Kcat/Km (μM−1·s−1) | Source |
---|---|---|---|---|---|
PimD | 4,5-De-epoxypimaricin | 1.5±0.34 | 93±29 | 0.016±0.002 | This work |
PimD* | 4,5-De-epoxypimaricin | 0.78±0.04 | 33±5.5 | 0.024±0.003 | This work |
EryF | 6-Deoxyerythronolide B | 1.7 | 1.98±0.26 | 0.85±0.11 | [16] |
EryK | Erythromycin D | 6.2±1.2 | 44±10 | 0.14±0.042 | [17] |
EryK* | Erythromycin D | 1.8±0.18 | 8±2.3 | 0.22±0.068 | [17] |
PicK | YC-17 | 1.1±0.08 | 130±20 | 0.008±0.004 | [18] |
PicK | Narbomycin | 2.0±0.3 | 88±24 | 0.023±0.01 | [18] |
PicK* | YC-17 | 0.6±0.05 | 20.4±5.6 | 0.029±0.008 | [7] |
PicK* | Narbomycin | 1.0±0.11 | 43.7±5.9 | 0.023±0.018 | [7] |
* Apparent values obtained from fitting the Michaelis–Menten equation to the low-concentration data in the linear region of the saturation curve.