1.13.11.66: hydroquinone 1,2-dioxygenase
This is an abbreviated version!
For detailed information about hydroquinone 1,2-dioxygenase, go to the full flat file.
Word Map on EC 1.13.11.66
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1.13.11.66
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semialdehyde
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sphingomonas
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para-nitrophenol
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4-monooxygenase
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methylhydroquinone
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fission
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maleylacetate
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heterotetramer
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monooxygenation
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catecholic
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alkylphenols
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p-benzoquinone
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burkholderia
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wastewater
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chlorohydroquinone
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fluorescens
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1,4-benzoquinone
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4-hydroxybenzoate
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sludge
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ironii
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sensu
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cupin
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2-chloro-4-nitrophenol
- 1.13.11.66
- semialdehyde
- sphingomonas
- para-nitrophenol
-
4-monooxygenase
- methylhydroquinone
-
fission
- maleylacetate
- heterotetramer
-
monooxygenation
-
catecholic
-
alkylphenols
- p-benzoquinone
- burkholderia
-
wastewater
- chlorohydroquinone
- fluorescens
- 1,4-benzoquinone
- 4-hydroxybenzoate
- sludge
-
ironii
-
sensu
-
cupin
- 2-chloro-4-nitrophenol
Reaction
Synonyms
HQDO, hydroquinone 1,2-dioxygenase, hydroquinone dioxygenase, LinE, mnpC, PcpA, PdcDE, PnpC1, PnpC2, PnpCD, ring-cleavage hydroquinone 1,2-dioxygenase, two-subunit hydroquinone 1,2-dioxygenase, type II HQDO, YaiA
ECTree
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Metals Ions
Metals Ions on EC 1.13.11.66 - hydroquinone 1,2-dioxygenase
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Fe2+
Iron
Manganese
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preincubation in presence of 0.1 mM Fe2+ and 1 mM Mn2+ increases activity by 10fold
additional information
C1I210; C1I209
a Fe2+-dependent dioxygenase, selectively utilizes Fe2+for its catalytic reaction. Four residues of enzyme PnpD, His256, Asn258, Glu262, and His303, coordinate the iron ion
Fe2+
required for catalysis, each of the four beta subunits in the asymmetric unit of the enzyme crystal binds one Fe(II) ion. The iron ion in each beta subunit is coordinated to three protein residues, His258, Glu264, and His305 and a water molecule
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preincubation in presence of 0.1 mM Fe2+ and 1 mM Mn2+ increases activity by 10fold
Iron
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10fold activation by Fe2+, each subunit binds one molecule of 4-hydroxybenzoate and one molecule of iron
Iron
the residues ligating the Fe(II) are H11, H227, and E276
C1I210; C1I209
Fe3+, Mn2+, Co2+, Ni2+, Cu2+, and Cd2+ cannot substitute for Fe2+
additional information
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Fe3+, Mn2+, Cu+, Cu2+ do not support enzyme activity