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Table 3 Kinetic parameters for xanthine oxidation in XO monoenzyme system. Constants are expressed as the mean ± SE

From: Plumbagin can potently enhance the activity of xanthine oxidase: in vitro, in vivo and in silico studies

PLB μM

Km μM

Vmax nmol/min/U

Goodness of fit R2

CLint μL/min/U

0

25.3 ± 1.5

3.881 ± 0.058

0.994

153

5

25.9 ± 1.9

4.147 ± 0.080

0.991

160

10

28.6 ± 2.6

4.908 ± 0.1212

0.992

171

20

30.2 ± 3.3

5.484 ± 0.161

0.981

181

40

37.0 ± 3.5

6.666 ± 0.180

0.987

180