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. 2005 Feb 8;386(Pt 1):57–62. doi: 10.1042/BJ20040490

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.