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IUBMB CommentsInvolved in tyrosine degradation pathway in Arthrobacter sp.
The expected taxonomic range for this enzyme is: Arthrobacter globiformis
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2 4-hydroxyphenylpyruvate + O2 = 2 4-hydroxyphenylacetate + 2 CO2
Involved in tyrosine degradation pathway in Arthrobacter sp.
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oxidative decarboxylation
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4-hydroxyphenylpyruvate:oxygen oxidoreductase (decarboxylating)
Involved in tyrosine degradation pathway in Arthrobacter sp.
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4-hydroxyphenylpyruvate + O2
4-hydroxyphenylacetate + CO2
glyoxylate + O2
CO2 + CO2
phenylpyruvate + O2
phenylacetate + CO2
4-hydroxyphenylpyruvate + O2
4-hydroxyphenylacetate + CO2
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4-hydroxyphenylpyruvate + O2
4-hydroxyphenylacetate + CO2
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glyoxylate + O2
CO2 + CO2
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19% of the activity compared to 4-hydroxyphenylpyruvate as substrate
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glyoxylate + O2
CO2 + CO2
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19% of the activity compared to 4-hydroxyphenylpyruvate as substrate
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phenylpyruvate + O2
phenylacetate + CO2
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84% of the activity compared to 4-hydroxyphenylpyruvate as substrate
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phenylpyruvate + O2
phenylacetate + CO2
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84% of the activity compared to 4-hydroxyphenylpyruvate as substrate
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4-hydroxyphenylpyruvate + O2
4-hydroxyphenylacetate + CO2
4-hydroxyphenylpyruvate + O2
4-hydroxyphenylacetate + CO2
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4-hydroxyphenylpyruvate + O2
4-hydroxyphenylacetate + CO2
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FAD
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optimal activity at 10 nM, can not be replaced by NAD+, NADP+ or FMN
thiamine diphosphate
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optimal activity at 0.004 mM, absolute requirement
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Mg2+
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optimal activity at 0.01 mM
Mn2+
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optimal activity at 0.01 mM
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EDTA
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potent inhibitor, other metal chelators ineffective
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GSH
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optimal activity at 0.002 mM, can be replaced by 2-mercaptoethanol, cysteine or dithiothreitol
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brenda
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brenda
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brenda
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10% loss of activity per h
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stabilizing effects of activity with ammonium sulfate, NaCl, Na2SO4 or MgSO4
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-20°C, ammonium sulfate precipitation or crude extract, 4 weeks
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Blakley, E.R.
The catabolism of L-tyrosine by an Arthrobacter sp.
Can. J. Microbiol.
23
1128-1139
1977
Arthrobacter globiformis
brenda
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Enzyme Nomenclature
1.2.3.13 4-hydroxyphenylpyruvate oxidase
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