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Table 2 Substrate specificity of HQDO of Sphingomonas sp. strain TTNP3 (relative rate of oxygen consumption with 200 μM substrate compared to HQ as substrate)

From: Purification and characterization of hydroquinone dioxygenase from Sphingomonas sp. strain TTNP3

Substrate (200 μM)

Activity (%)

SD (%)

Hydroquinone

100

12.8

Chlorohydroquinone

29

0.8

2-Methoxyhydroquinone

59

6.7

2-Methylhydroquinone

139

9.3

2-Ethylhydroquinone

83

4.3

2-Propylhydroquinone

23

2.6

2-t-Butylhydroquinone

5

0.6

2-Pentylhydroquinone

19

1.1

2-Hexylhydroquinone

<2

1.1

2-(1-methyl-1-octyl)-hydroquinone

<2

0.5