1.14.13.2: 4-hydroxybenzoate 3-monooxygenase

This is an abbreviated version!
For detailed information about 4-hydroxybenzoate 3-monooxygenase, go to the full flat file.

Word Map on EC 1.14.13.2

Reaction

4-hydroxybenzoate
+
NADPH
+
H+
+
O2
=
3,4-dihydroxybenzoate
+
NADP+
+
H2O

Synonyms

4-HBA 3-hydroxylase, 4-HBA 3-monooxygenase, 4-HBA-3-hydroxylase, 4-HBMO, 4-hydroxybenzoate 3-hydroxylase, 4-hydroxybenzoate 3-monooxygenase, 4-hydroxybenzoate hydroxylase, 4-hydroxybenzoate monooxygenase, 4-hydroxybenzoic hydroxylase, 4HBA 3-hydroxylase, BxeA2040, HBH, m-hydroxybenzoate hydroxylase, MobA, ncgl1032, oxygenase, 4-hydroxybenzoate 3-mono-, p-hydroxybenzoate hydroxylase, p-hydroxybenzoate-3-hydroxylase, p-hydroxybenzoic acid hydrolase, p-hydroxybenzoic acid hydroxylase, p-hydroxybenzoic hydroxylase, para-hydroxybenzoate hydroxylase, PHBAD, PHBH, PHBHase, PobA, pobACg, POHBase

ECTree

     1 Oxidoreductases
         1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
             1.14.13 With NADH or NADPH as one donor, and incorporation of one atom of oxygen into the other donor
                1.14.13.2 4-hydroxybenzoate 3-monooxygenase

Cofactor

Cofactor on EC 1.14.13.2 - 4-hydroxybenzoate 3-monooxygenase

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COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
1-deaza-FAD
-
when 1-deaza-FAD is used as cofactor, the enzyme carries out each step in catalysis except the transfer of oxygen to 4-hydroxybenzoate
6-Hydroxy-FAD
-
when 6-hydroxy-FAD is used as cofactor, the enzyme has a lower turnover rate than the native enzyme
arabinoflavin adenine dinucleotide
-
like native enzyme the arabinoflavin adenine dinucleotide containing 4-hydroxybenzoate hydroxylase preferentially binds the phenolate form of the substrate. The oxidative part of the catalytic cycle of a FAD-containing 4-hydroxybenzoate hydroxylase differs from the native enzyme. Partial uncoupling of hydroxylation results in the formation of about 0.3 mol of 3,4-dihydroxybenzoate and 0.7 mol of H2O2 per mol of NADPH oxidized
additional information
-
helix H2 is involved in determining the coenzyme specificity
-