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Table 3 Enzyme activity on HQ in the presence of phenolic inhibitors of HQDO

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

Inhibitor

Activity (%)

Inhibitor concentration (μM)

SD (%)

4-Hydroxybenzoate

46

200

0.4

3,4-Dihydroxybenzoate

94

200

4.6

4-Hydroxybenzylcyanide

<1

200

0.3

 

3

20

0.3

 

16

2

0.2

Aminobenzoic acid

93

200

1.2

Vanillin

7

200

2.2

 

18

100

7.4

Vanillyl alcohol

62

200

1.0

Vanillate

86

200

1.0

4-Coumaric acid

97

200

1.9

Caffeic acid

98

80

2.5

Phenol

98

200

1.7

Catechol

93

200

1.3

Resorcinol

99

200

0.5

4-Nitrophenol

27

200

1.2

4-Mercaptophenol

1

200

 
 

5

20

 

Benzoquinone

3

200

0.9

 

16

20

0.3