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4-Nitrophenol 4-monooxygenase

Class of enzymes From Wikipedia, the free encyclopedia

4-nitrophenol 4-monooxygenase (EC 1.14.13.167, pnpA (gene), pdcA (gene)) is an enzyme with systematic name 4-nitrophenol,NAD(P)H:oxygen 4-oxidoreductase (4-hydroxylating, nitrite-forming).[1] This enzyme catalyses the following chemical reaction

 
 
O2 + H+
H2O
Rightward reaction arrow with minor substrate(s) from top left and minor product(s) to top right
 
 
 
+ NADP+ + HNO2
 

The four substrates of this enzyme are 4-nitrophenol, reduced nicotinamide adenine dinucleotide phosphate (NADPH), oxygen, and a proton. Its products are 1,4-benzoquinone, oxidised NADP+, water, and nitrous acid. It is a flavoprotein that uses flavin adenine dinucleotide as a cofactor.[2]

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