The enzyme, characterized from the bacterium Burkholderia cepacia, belongs to a class of nonheme, oxygen-dependent diiron enzymes. It contains a hydroxylase component with two binuclear iron centers, an NADH-oxidoreductase component containing FAD and a [2Fe-2S] iron-sulfur cluster, and a third component involved in electron transfer between the hydroxylase and the reductase. The enzyme dihydroxylates its substrate in two sequential hydroxylations, initially forming 2-methylphenol, which is hydroxylated to 3-methylcatechol.
The enzyme, characterized from the bacterium Burkholderia cepacia, belongs to a class of nonheme, oxygen-dependent diiron enzymes. It contains a hydroxylase component with two binuclear iron centers, an NADH-oxidoreductase component containing FAD and a [2Fe-2S] iron-sulfur cluster, and a third component involved in electron transfer between the hydroxylase and the reductase. The enzyme dihydroxylates its substrate in two sequential hydroxylations, initially forming 2-methylphenol, which is hydroxylated to 3-methylcatechol.
enzyme additionally oxidizes trichloroethylene, reaction of EC 1.14.13.243. All three purified toluene 2-monooxygenase protein components and NADH are required to reconstitute full trichloroethylene oxidation activity in vitro. Trichloroethylene-dependent inactivation of toluene 2-monooxygenase activity is observed
wild-type forms isoindigo via C-2 hydroxylation of the indole pyrrole. Mutant TomA3 A113G produces 4-hydroxyindole. TomA3 V106/A113 mutants with hydrophobic, polar, or charged amino acids hydroxylate indole at the C-3 and C-2 positions, forming isatin, indigo, and indirubin in a variety of distributions
wild-type forms isoindigo via C-2 hydroxylation of the indole pyrrole. Mutant TomA3 A113G produces 4-hydroxyindole. TomA3 V106/A113 mutants with hydrophobic, polar, or charged amino acids hydroxylate indole at the C-3 and C-2 positions, forming isatin, indigo, and indirubin in a variety of distributions
wild-type forms isoindigo via C-2 hydroxylation of the indole pyrrole. Mutant TomA3 A113G produces 4-hydroxyindole. TomA3 V106/A113 mutants with hydrophobic, polar, or charged amino acids hydroxylate indole at the C-3 and C-2 positions, forming isatin, indigo, and indirubin in a variety of distributions
enzyme additionally oxidizes trichloroethylene, reaction of EC 1.14.13.243. All three purified toluene 2-monooxygenase protein components and NADH are required to reconstitute full trichloroethylene oxidation activity in vitro. Trichloroethylene-dependent inactivation of toluene 2-monooxygenase activity is observed
enzyme additionally oxidizes trichloroethylene, reaction of EC 1.14.13.243. All three purified toluene 2-monooxygenase protein components and NADH are required to reconstitute full trichloroethylene oxidation activity in vitro. Trichloroethylene-dependent inactivation of toluene 2-monooxygenase activity is observed
effective inhibitor of toluene-dependent growth, presence results in the irreversible loss of toluene- and o-cresol-dependent O2 uptake activities. Presence of oxygen, supplied as H2O2, is required for inhibition by 1-butyne
Q52570 i.e. oxidase subunit TbmB, Q52572 i.e. oxidase subunit TbmD, Q52569 i.e. subunit TbmA, Q52571 i.e. subunit TbmC, Q52573 i.e. subunit TbmE, Q52574 i.e. subunit TbmF
Q9ANX4 i.e. subunit tomA1, Q9ANX0 i.e. subunit tomA5, Q9ANX3 i.e. subunit TomA2, Q8VSV8 i.e. subunit TomA3, Q9ANX1 i.e. subunit TomA4, Q8VSV9 i.e. subunit TomA0
Q9ANX4 i.e. subunit tomA1, Q9ANX0 i.e. subunit tomA5, Q9ANX3 i.e. subunit TomA2, Q8VSV8 i.e. subunit TomA3, Q9ANX1 i.e. subunit TomA4, Q8VSV9 i.e. subunit TomA0, cf. EC 1.14.13.243
Q9ANX4 i.e. subunit tomA1, Q9ANX0 i.e. subunit tomA5, Q9ANX3 i.e. subunit TomA2, Q8VSV8 i.e. subunit TomA3, Q9ANX1 i.e. subunit TomA4, Q8VSV9 i.e. subunit TomA0
Q9ANX4 i.e. subunit tomA1, Q9ANX0 i.e. subunit tomA5, Q9ANX3 i.e. subunit TomA2, Q8VSV8 i.e. subunit TomA3, Q9ANX1 i.e. subunit TomA4, Q8VSV9 i.e. subunit TomA0, cf. EC 1.14.13.243
enzyme consists of a 40 kDa polypeptide containing one FAD and a [2Fe-2S] cluster, a 10.4 kDa polypeptide that contains no identifiable metals or organic cofactors, and a 211 kDa alpha2beta2gamma2 component containing five to six iron atoms. The 40 kDa flavo-iron-sulfur protein oxidizes NADH and transfers electrons to cytochrome c, dyes, and the alpha2beta2gamma2 component, which contains the site for toluene binding and hydroxylation
three-component enzyme system, consisting of a 40 kDa polypeptide containing one FAD and a [2Fe2S] cluster, a 10.4 kDa polypeptide that contains no identifiable metals or organic cofactors, and a 211 kDa alpha2beta2gamma2 component containing five to six iron atoms. The 40 kDa flavo-iron-sulfur protein oxidizes NADH and transfers electrons to cytochrome c, dyes, and the alpha2beta2gamma2 component. The 10.4 kDa component, added to the other two components and NADH, increases toluene oxidation rates 40 kDa polypeptide containing one FAD and a [2Fe2S] cluster, a 10.4 kDa polypeptide that contains no identifiable metals or organic cofactors, and a 211 kDa alpha2beta2gamma2 component containing five to six iron atoms10fold. The alpha2beta2gamma2 component contains the site for toluene binding and hydroxylation
enzyme consists of a 40 kDa polypeptide containing one FAD and a [2Fe-2S] cluster, a 10.4 kDa polypeptide that contains no identifiable metals or organic cofactors, and a 211 kDa alpha2beta2gamma2 component containing five to six iron atoms. The 40 kDa flavo-iron-sulfur protein oxidizes NADH and transfers electrons to cytochrome c, dyes, and the alpha2beta2gamma2 component, which contains the site for toluene binding and hydroxylation
three-component enzyme system, consisting of a 40 kDa polypeptide containing one FAD and a [2Fe2S] cluster, a 10.4 kDa polypeptide that contains no identifiable metals or organic cofactors, and a 211 kDa alpha2beta2gamma2 component containing five to six iron atoms. The 40 kDa flavo-iron-sulfur protein oxidizes NADH and transfers electrons to cytochrome c, dyes, and the alpha2beta2gamma2 component. The 10.4 kDa component, added to the other two components and NADH, increases toluene oxidation rates 40 kDa polypeptide containing one FAD and a [2Fe2S] cluster, a 10.4 kDa polypeptide that contains no identifiable metals or organic cofactors, and a 211 kDa alpha2beta2gamma2 component containing five to six iron atoms10fold. The alpha2beta2gamma2 component contains the site for toluene binding and hydroxylation
mutation in hydroxylase alpha-subunit TomA3, variant degrades its natural substrate toluene 63% faster than wild-type, with 50% 2-methylphenol, 25% 3-methylphenol, and 25% 4-methylphenol being formed. Whole cells expressing the A106E variant have two times better naphthalene-to-1-naphthol activity than the wild-type, and the regiospecificity of the A106E variant is unchanged, with 98% 1-naphthol formed
mutation in subunit TomA3, colony turns green. Mutant degrades trichloroethylene, 1,1-dichloroethylene, and trans-dichloroethylene more rapidly than wild-type. Whole cells expressing the mutant synthesize 1-naphthol six times faster than wild-type enzyme
mutation of the alpha-hydroxylase subunit TomA3, improves both rate and enantioselectivity. Mutant oxidizes methyl phenyl sulfide to the corresponding sulfoxide at a rate of 3.0 nmol/min/mg protein compared with 1.6 for the wild-type enzyme, and the enantiomeric excess (pro-S) increases from 51% for the wild type to 88% for the mutant
mutation in hydroxylase alpha-subunit TomA3, variant degrades its natural substrate toluene 63% faster than wild-type, with 50% 2-methylphenol, 25% 3-methylphenol, and 25% 4-methylphenol being formed. Whole cells expressing the A106E variant have two times better naphthalene-to-1-naphthol activity than the wild-type, and the regiospecificity of the A106E variant is unchanged, with 98% 1-naphthol formed
mutation in subunit TomA3, colony turns green. Mutant degrades trichloroethylene, 1,1-dichloroethylene, and trans-dichloroethylene more rapidly than wild-type. Whole cells expressing the mutant synthesize 1-naphthol six times faster than wild-type enzyme
mutation of the alpha-hydroxylase subunit TomA3, improves both rate and enantioselectivity. Mutant oxidizes methyl phenyl sulfide to the corresponding sulfoxide at a rate of 3.0 nmol/min/mg protein compared with 1.6 for the wild-type enzyme, and the enantiomeric excess (pro-S) increases from 51% for the wild type to 88% for the mutant
enzymativc biosensor for in situ measurement of toluene using toluene ortho-monooxygenase, while an optical fiber with an oxygen-sensitive ruthenium-based phosphorescent dye serves as the transducer. The biosensor has a limit of detection of 3 microM, a linear signal range up to 100 microM, and a response time of 1 h
enzymativc biosensor for in situ measurement of toluene using toluene ortho-monooxygenase, while an optical fiber with an oxygen-sensitive ruthenium-based phosphorescent dye serves as the transducer. The biosensor has a limit of detection of 3 microM, a linear signal range up to 100 microM, and a response time of 1 h
coexpression of subunit TomA3 mutant V106A and an engineered epoxide hydrolase EchA from Agrobacterium radiobacter AD1, enhances the degradation of cis-dichloroethylene
expression in Pseudomonas fluorescens for removal of trichloroethylene from soils. Closed microcosms containing the constitutive monooxygenase-expressing microorganism, soil, and wheat degrade an average of 63% of the initial trichloroethylene in 4 days (20.6 nmol of trichloroethylene/day and plant), compared to 9% of the initial trichloroethylene removed by microcosms containing wild-type Pseudomonas fluorescens 2-79 inoculated wheat, uninoculated wheat, or sterile soil
coexpression of subunit TomA3 mutant V106A and an engineered epoxide hydrolase EchA from Agrobacterium radiobacter AD1, enhances the degradation of cis-dichloroethylene
Rhizoremediation of trichloroethylene by a recombinant, root-colonizing Pseudomonas fluorescens strain expressing toluene ortho-monooxygenase constitutively
Appl. Environ. Microbiol.
64
112-118
1998
Burkholderia cepacia (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia
Inactivation of toluene 2-monooxygenase in Burkholderia cepacia G4 by alkynes
Appl. Environ. Microbiol.
65
632-639
1999
Burkholderia cepacia (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia, Burkholderia cepacia G4 (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4
Saturation mutagenesis of toluene ortho-monooxygenase of Burkholderia cepacia G4 for enhanced 1-naphthol synthesis and chloroform degradation
Appl. Environ. Microbiol.
70
3246-3252
2004
Burkholderia cepacia (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4 (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4
Feingersch, R.; Shainsky, J.; Wood, T.K.; Fishman, A.
Protein engineering of toluene monooxygenases for synthesis of chiral sulfoxides
Appl. Environ. Microbiol.
74
1555-1566
2008
Burkholderia cepacia (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4 (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4
Protein engineering of toluene ortho-monooxygenase of Burkholderia cepacia G4 for regiospecific hydroxylation of indole to form various indigoid compounds
Appl. Microbiol. Biotechnol.
66
422-429
2005
Burkholderia cepacia (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4 (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4
Trichloroethylene oxidation by purified toluene 2-monooxygenase products, kinetics, and turnover-dependent inactivation
J. Bacteriol.
179
90-96
1997
Burkholderia cepacia (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4 (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4
Directed evolution of toluene ortho-monooxygenase for enhanced 1-naphthol synthesis and chlorinated ethene degradation
J. Bacteriol.
184
344-349
2002
Burkholderia cepacia (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4 (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4
Active site engineering of the epoxide hydrolase from Agrobacterium radiobacter AD1 to enhance aerobic mineralization of cis-1,2-dichloroethylene in cells expressing an evolved toluene ortho-monooxygenase
J. Biol. Chem.
279
46810-46817
2004
Burkholderia cepacia (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9), Burkholderia cepacia G4 (Q9ANX4 and Q9ANX0 and Q9ANX3 and Q8VSV8 and Q9ANX1 and Q8VSV9)