The Enzyme Database

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Accepted name: 4-nitrophenol 4-monooxygenase
Reaction: 4-nitrophenol + NADPH + H+ + O2 = 1,4-benzoquinone + nitrite + NADP+ + H2O
For diagram of 4-nitrophenol metabolism, click here
Other name(s): pnpA (gene name); pdcA (gene name)
Systematic name: 4-nitrophenol,NAD(P)H:oxygen 4-oxidoreductase (4-hydroxylating, nitrite-forming)
Comments: Contains FAD. The enzyme catalyses the first step in a degradation pathway for 4-nitrophenol, the oxidation of 4-nitrophenol at position 4 with the concomitant removal of the nitro group as nitrite. The enzyme from the bacterium Pseudomonas sp. strain WBC-3 also catalyses EC, 4-nitrocatechol 4-monooxygenase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Zhang, J.J., Liu, H., Xiao, Y., Zhang, X.E. and Zhou, N.Y. Identification and characterization of catabolic para-nitrophenol 4-monooxygenase and para-benzoquinone reductase from Pseudomonas sp. strain WBC-3. J. Bacteriol. 191 (2009) 2703–2710. [DOI] [PMID: 19218392]
[EC created 2012]

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