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Table 2 Kinetic constants for VA and RB5 oxidation by the S164W variant of C. subvermispora MnP6 at acidic pH values

From: Engineering a fungal peroxidase that degrades lignin at very acidic pH

  

pH 1.6

pH 2.0

pH 3.0

VA

K m (μM)

650 ± 97

913 ± 52

2740 ± 560

kcat (s-1)

1.35 ± 0.06

1.08 ± 0.01

0.54 ± 0.04

kcat/K m (s-1. mM-1)

2.08 ± 0.24

1.08 ± 0.06

0.197 ± 0

  

pH 2.5

pH 3.5

RB5

K m (μM)

1.4 ± 0.2

12.6 ± 3

kcat (s-1)

12.9 ± 0.7

7.8 ± 1.1

kcat/K m (s-1. mM-1)

9050 ± 930

619 ± 27

  1. Means and 95% confidence limits from triplicate measurements of substrate oxidation at 25°C in 100 mM BR buffer of different pH values.