KEGG   ENZYME: 1.14.13.166Help
Entry
EC 1.14.13.166              Enzyme                                 

Name
4-nitrocatechol 4-monooxygenase
Class
Oxidoreductases;
Acting on paired donors, with incorporation or reduction of molecular oxygen;
With NADH or NADPH as one donor, and incorporation of one atom of oxygen into the other donor
BRITE hierarchy
Sysname
4-nitrocatechol,NAD(P)H:oxygen 4-oxidoreductase (4-hydroxylating, nitrite-forming)
Reaction(IUBMB)
4-nitrocatechol + NAD(P)H + H+ + O2 = 2-hydroxy-1,4-benzoquinone + nitrite + NAD(P)+ + H2O
Substrate
4-nitrocatechol [CPD:C02235];
NADH [CPD:C00004];
NADPH [CPD:C00005];
H+ [CPD:C00080];
O2 [CPD:C00007]
Product
2-hydroxy-1,4-benzoquinone [CPD:C07103];
nitrite [CPD:C00088];
NAD+ [CPD:C00003];
NADP+ [CPD:C00006];
H2O [CPD:C00001]
Comment
Contains FAD. The enzyme catalyses the oxidation of 4-nitrocatechol with the concomitant removal of the nitro group as nitrite. Forms a two-component system with a flavoprotein reductase [1]. The enzymes from the bacteria Lysinibacillus sphaericus JS905 and Rhodococcus sp. strain PN1 were shown to also catalyse EC 1.14.13.29, 4-nitrophenol 2-monooxygenase [1,2] while the enzyme from Pseudomonas sp. WBC-3 was shown to also catalyse EC 1.14.13.167, 4-nitrophenol 4-monooxygenase [3].
History
EC 1.14.13.166 created 2012
Orthology
K21725  
4-nitrocatechol/4-nitrophenol 4-monooxygenase
K21726  
4-nitrophenol 2-monooxygenase / 4-nitrocatechol 4-monooxygenase, oxygenase component
Genes
PPUD: 
BYI: 
ARY: 
ACH: 
Taxonomy
Reference
1  [PMID:9647818]
  Authors
Kadiyala V, Spain JC
  Title
A two-component monooxygenase catalyzes both the hydroxylation of p-nitrophenol and the oxidative release of nitrite from 4-nitrocatechol in Bacillus sphaericus  JS905.
  Journal
Appl. Environ. Microbiol. 64 (1998) 2479-84.
Reference
2  [PMID:15262926]
  Authors
Kitagawa W, Kimura N, Kamagata Y
  Title
A novel p-nitrophenol degradation gene cluster from a gram-positive bacterium, Rhodococcus opacus SAO101.
  Journal
J. Bacteriol. 186 (2004) 4894-902.
  Sequence
Reference
3  [PMID:19218392]
  Authors
Zhang JJ, Liu H, Xiao Y, Zhang XE, Zhou NY
  Title
Identification and characterization of catabolic para-nitrophenol 4-monooxygenase and para-benzoquinone reductase from Pseudomonas sp. strain WBC-3.
  Journal
J. Bacteriol. 191 (2009) 2703-10.
  Sequence
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
UM-BBD (Biocatalysis/Biodegradation Database): 
BRENDA, the Enzyme Database: 

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