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Table 3 Substrate specificity of DHPAO

From: Characterization of enzymatic properties of two novel enzymes, 3,4-dihydroxyphenylacetate dioxygenase and 4-hydroxyphenylacetate 3-hydroxylase, from Sulfobacillus acidophilus TPY

Substrates Relative activity (%)
Catechol 100
Pyrogallol 28.42 ± 1.69
3-Methylcatechol 76.87 ± 2.55
4-Methylcatechol 109.17 ± 0.32
3,4-Dihydroxybenzoic acid 33.09 ± 1.37
3,4-Dihydroxyphenylacetic acid 212.36 ± 1.55
3,4-Dihydroxybenzaldehyde <1
Tetrabromocatechol <1
Phloroglucinol
4-Nitrocatechol