Ligand 4-hydroxyphenylacetyl-CoA
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Basic Ligand Information
Molecular Structure

C29H42N7O18P3S
4-hydroxyphenylacetyl-CoA
GPCAQTOAAYEBGJ-FFJUWABQSA-N
(4-hydroxyphenyl)acetyl-CoA, p-hydroxyphenylacetyl-CoA
Roles as Enzyme Ligand
Substrate in Enzyme-catalyzed Reactions (3 results)
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(4-hydroxyphenyl)acetyl-CoA + O2 = (4-hydroxyphenyl)glyoxylate + CoA
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4-hydroxyphenylacetyl-CoA + H2O = CoA + 4-hydroxyphenylacetate
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4-hydroxyphenylacetyl-CoA + H2O = 4-hydroxyphenylacetate + CoA
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Product in Enzyme-catalyzed Reactions (5 results)
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4-hydroxyphenylpyruvate + CoA + 2 methyl viologen = (4-hydroxyphenyl)acetyl-CoA + CO2 + 2 reduced methyl viologen + 2 H+
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hydroxyphenylpyruvate + CoA + oxidized ferredoxin = 4-hydroxyphenylacetyl-CoA + CO2 + reduced ferredoxin
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4-hydroxyphenylpyruvate + CoA + oxidized ferredoxin = 4-hydroxyphenylacetyl-CoA + CO2 + reduced ferredoxin + H+
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p-hydroxyphenylpyruvate + CoA + oxidized ferredoxin = p-hydroxyphenylacetyl-CoA + CO2 + reduced ferredoxin
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ATP + 4-hydroxyphenylacetate + CoA = AMP + diphosphate + 4-hydroxyphenylacetyl-CoA
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Enzyme Kinetic Parameters
kcat Value (Turnover Number) (9 results)
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0.14
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wild-type protein, pH7.5, 25°C
75
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pH 7.5, 25°C, determined using the 5,5'-dithiobis(2-nitrobenzoic acid) spectrophotometric assay
0.17
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pH 8.1, 25°C, mutant enzyme D16A
0.26
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pH 8.1, 25°C, mutant enzyme H52A
0.31
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pH 8.1, 25°C, mutant enzyme N46A
3.2
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pH 8.1, 25°C, mutant enzyme N15A
11
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pH 8.1, 25°C, wild-type enzyme
19
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pH 8.1, 25°C, mutant enzyme E14A
79
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pH 8.1, 25°C, wild-type enzyme
KM Value (9 results)
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0.0076
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pH 7.5, 25°C, determined using the 5,5'-dithiobis(2-nitrobenzoic acid) spectrophotometric assay
0.049
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wild-type protein, pH7.5, 25°C
0.018
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pH 8.1, 25°C, mutant enzyme N15A
0.028
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pH 8.1, 25°C, mutant enzyme H52A
0.035
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pH 8.1, 25°C, wild-type enzyme
0.055
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pH 8.1, 25°C, wild-type enzyme
0.09
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pH 8.1, 25°C, mutant enzyme E14A
0.25
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pH 8.1, 25°C, mutant enzyme D16A
0.28
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pH 8.1, 25°C, mutant enzyme N46A
References & Links
Literature References (4)
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Divergence of function in the hot dog fold enzyme superfamily: the bacterial thioesterase YciA
2008
Zhuang, Z.; Song, F.; Zhao, H.; Li, L.; Cao, J.; Eisenstein, E.; Herzberg, O.; Dunaway-Mariano, D.
Biochemistry
47
2789-2796
The mechanisms of human hotdog-fold thioesterase 2 (hTHEM2) substrate recognition and catalysis illuminated by a structure and function based analysis
2009
Cao, J.; Xu, H.; Zhao, H.; Gong, W.; Dunaway-Mariano, D.
Biochemistry
48
1293-1304
Structure, function, and mechanism of the phenylacetate pathway hot dog-fold thioesterase PaaI
2006
Song, F.; Zhuang, Z.; Finci, L.; Dunaway-Mariano, D.; Kniewel, R.; Buglino, J.A.; Solorzano, V.; Wu, J.; Lima, C.D.
J. Biol. Chem.
281
11028-11038
Substrate recognition and catalysis by the cofactor-independent dioxygenase DpgC
2007
Fielding, E.N.; Widboom, P.F.; Bruner, S.D.
Biochemistry
46
13994-4000
Links to other databases for 4-hydroxyphenylacetyl-CoA