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IUBMB CommentsThe enzyme from Streptomyces sp. IKD472 and from Streptomyces coelicolor is a monomeric oxidase containing one molecule of FAD per molecule of protein [1,2]. While xylitol (five carbons) and sorbitol (6 carbons) are the preferred substrates, other alditols, including L-threitol (four carbons), D-arabinitol (five carbons), D-galactitol (six carbons) and D-mannitol (six carbons) can also act as substrates, but more slowly [1,2]. Belongs in the vanillyl-alcohol-oxidase family of enzymes .
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an alditol + O2 = an aldose + H2O2
xylitol + O2 = xylose + H2O2
-
-
-
-
an alditol + O2 = an aldose + H2O2

catalytic mechanism and stereoselectivity, substrate binding occurs through a lock-and-key mechanism and does not induce conformational changes with respect to the ligand-free protein, overview
an alditol + O2 = an aldose + H2O2
proposed mechanism for the oxidation of 1,2-diols to the alpha-hydroxy acids, overview
-
an alditol + O2 = an aldose + H2O2
proposed mechanism for the oxidation of 1,2-diols to the alpha-hydroxy acids, overview
-
-
an alditol + O2 = an aldose + H2O2
catalytic mechanism and stereoselectivity, substrate binding occurs through a lock-and-key mechanism and does not induce conformational changes with respect to the ligand-free protein, overview
-
-
an alditol + O2 = an aldose + H2O2
-
-
-
-
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alditol:oxygen oxidoreductase
The enzyme from Streptomyces sp. IKD472 and from Streptomyces coelicolor is a monomeric oxidase containing one molecule of FAD per molecule of protein [1,2]. While xylitol (five carbons) and sorbitol (6 carbons) are the preferred substrates, other alditols, including L-threitol (four carbons), D-arabinitol (five carbons), D-galactitol (six carbons) and D-mannitol (six carbons) can also act as substrates, but more slowly [1,2]. Belongs in the vanillyl-alcohol-oxidase family of enzymes [2].
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(R)-1-phenyl-1,2-ethanediol + O2
?
-
-
-
-
?
(R)-1-phenyl-1,2-ethanediol + O2
? + H2O2
(R)-1-phenyl-1,2-ethanediol + O2
hydroxy(phenyl)acetic acid + H2O2
-
-
product identification by NMR
-
?
(R)-1-phenyl-1,2-ethanediol + O2
mandelic acid + H2O2
-
the enzyme is highly enantioselective for the oxidation of (R)-1-phenyl-1,2-ethanediol
-
-
?
(S)-1-phenyl-1,2-ethanediol + O2
?
-
-
-
-
?
(S)-1-phenyl-1,2-ethanediol + O2
? + H2O2
1,2,4-butanetriol + O2
?
-
-
-
-
?
1,2-butanediol + O2
?
-
-
-
-
?
1,2-hexanediol + O2
?
-
-
-
-
?
1,2-pentanediol + O2
2-hydroxypentanoic acid + H2O2
1,2-propanediol + O2
?
-
-
-
-
?
1,3,5-pentanetriol + O2
?
-
-
-
-
?
1,3-butanediol + O2
3-hydroxybutanal + H2O2
-
-
product identification by GC-MS
-
?
1,4-butanediol + O2
?
-
very poor substrate
-
-
?
1-phenyl-1,2-ethanediol + O2
?
-
the enzyme is highly enantioselective for the oxidation of 1-phenyl-1,2-ethanediol, 35% conversion to mandelic acid and two minor by-products (less than 5%) is observed after 65 h
-
-
?
1-phenyl-1,2-ethanediol + O2
? + H2O2
2-amino-1-pentanol + O2
?
-
-
-
-
?
3-butene-1,2-diol + O2
?
-
-
-
-
?
3-butenol + O2
?
-
-
-
-
?
4-pentene-1,2-diol + O2
?
-
-
-
-
?
cis-2-butene-1,4-diol + O2
?
-
-
-
-
?
D-galactose + O2
?
-
very poor substrate
-
-
?
D-glyceraldehyde + O2
D-glycerate + H2O2
glycerol + O2
?
-
-
-
-
?
glycerol + O2
D-glyceraldehyde + H2O2
glycerol + O2
glyceraldehyde + H2O2
-
-
-
-
?
L-threitol + O2
?
-
-
-
-
?
xylitol + O2
D-xylose + H2O2
-
best substrate
-
-
?
xylitol + O2
xylose + H2O2
additional information
?
-
(R)-1-phenyl-1,2-ethanediol + O2

? + H2O2
-
-
-
?
(R)-1-phenyl-1,2-ethanediol + O2
? + H2O2
-
-
-
?
(R)-1-phenyl-1,2-ethanediol + O2
? + H2O2
-
-
-
?
(R)-1-phenyl-1,2-ethanediol + O2
? + H2O2
-
-
-
?
(S)-1-phenyl-1,2-ethanediol + O2

? + H2O2
-
-
-
?
(S)-1-phenyl-1,2-ethanediol + O2
? + H2O2
-
-
-
?
(S)-1-phenyl-1,2-ethanediol + O2
? + H2O2
-
-
-
?
(S)-1-phenyl-1,2-ethanediol + O2
? + H2O2
-
-
-
?
1,2-pentanediol + O2

2-hydroxypentanoic acid + H2O2
-
-
product identification by NMR
-
?
1,2-pentanediol + O2
2-hydroxypentanoic acid + H2O2
-
50% conversion after 22 h
-
-
?
1-phenyl-1,2-ethanediol + O2

? + H2O2
-
-
-
?
1-phenyl-1,2-ethanediol + O2
? + H2O2
-
-
-
?
1-phenyl-1,2-ethanediol + O2
? + H2O2
-
-
-
?
1-phenyl-1,2-ethanediol + O2
? + H2O2
-
-
-
?
D-glyceraldehyde + O2

D-glycerate + H2O2
-
-
-
-
?
D-glyceraldehyde + O2
D-glycerate + H2O2
-
-
-
-
?
D-mannitol + O2

?
-
-
-
-
?
D-mannitol + O2
?
-
-
-
?
D-mannitol + O2
?
-
-
-
?
D-mannitol + O2

? + H2O2
-
-
-
?
D-mannitol + O2
? + H2O2
-
-
-
?
D-sorbitol + O2

?
-
-
-
-
?
D-sorbitol + O2
?
-
-
-
?
D-sorbitol + O2
?
-
-
-
?
D-sorbitol + O2

? + H2O2
-
-
-
?
D-sorbitol + O2
? + H2O2
-
-
-
?
glycerol + O2

? + H2O2
-
-
-
?
glycerol + O2
? + H2O2
-
-
-
?
glycerol + O2
? + H2O2
-
-
-
?
glycerol + O2
? + H2O2
-
-
-
?
glycerol + O2

D-glyceraldehyde + H2O2
-
-
-
-
?
glycerol + O2
D-glyceraldehyde + H2O2
-
-
-
-
?
L-arabinose + O2

?
-
-
-
-
?
L-arabinose + O2
?
-
very poor substrate
-
-
?
sorbitol + O2

?
-
-
-
-
?
sorbitol + O2
?
-
-
-
-
?
xylitol + O2

?
-
-
-
-
?
xylitol + O2
?
-
best substrate
-
-
?
xylitol + O2

xylose + H2O2
-
-
-
?
xylitol + O2
xylose + H2O2
-
-
-
?
xylitol + O2
xylose + H2O2
-
-
-
-
?
xylitol + O2
xylose + H2O2
-
-
-
?
xylitol + O2
xylose + H2O2
-
-
-
?
xylitol + O2
xylose + H2O2
-
-
-
-
?
xylitol + O2
xylose + H2O2
-
-
-
?
additional information

?
-
-
AldO catalyzes the C1 oxidation of several polyols
-
-
?
additional information
?
-
-
substrate specificity, besides alditols, 1,2-diols are reasonable substrates indicating that two adjacent hydroxy groups at C-1 and C-2 seem to be a minimal requirement for a compound in order to be effectively oxidized by AldO, overview
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-
?
additional information
?
-
-
the enzyme is able to perform oxidations of alcohols into aldehydes/ketones (single oxidation) and oxidations of alcohols into acids (double oxidation)
-
-
?
additional information
?
-
-
AldO catalyzes the C1 oxidation of several polyols
-
-
?
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10 - 101
(R)-1-phenyl-1,2-ethanediol
27 - 86
(S)-1-phenyl-1,2-ethanediol
68 - 83
1-phenyl-1,2-ethanediol
additional information
additional information
-
10
(R)-1-phenyl-1,2-ethanediol

-
pH 7.5, 30°C
18
(R)-1-phenyl-1,2-ethanediol
pH 7.5, 25°C, recombinant enzyme
101
(R)-1-phenyl-1,2-ethanediol
pH 7.5, 25°C, recombinant enzyme
101
(R)-1-phenyl-1,2-ethanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
27
(S)-1-phenyl-1,2-ethanediol

pH 7.5, 25°C, recombinant enzyme
86
(S)-1-phenyl-1,2-ethanediol
-
pH 7.5, 30°C
86
(S)-1-phenyl-1,2-ethanediol
pH 7.5, 25°C, recombinant enzyme
86
(S)-1-phenyl-1,2-ethanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
170
1,2,4-butanetriol

-
pH 7.5, 30°C
170
1,2,4-butanetriol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
150
1,2-Butanediol

-
pH 7.5, 30°C
150
1,2-Butanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
97
1,2-hexanediol

-
pH 7.5, 30°C
97
1,2-hexanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
52
1,2-pentanediol

-
pH 7.5, 30°C
52
1,2-pentanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
68
1-phenyl-1,2-ethanediol

pH 7.5, 25°C, recombinant enzyme
83
1-phenyl-1,2-ethanediol
-
pH 7.5, 30°C
83
1-phenyl-1,2-ethanediol
pH 7.5, 25°C, recombinant enzyme
83
1-phenyl-1,2-ethanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
35
2-amino-1-pentanol

-
pH 7.5, 30°C
35
2-amino-1-pentanol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
250
3-butene-1,2-diol

-
pH 7.5, 30°C
250
3-butene-1,2-diol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
480
3-butenol

-
pH 7.5, 30°C
480
3-butenol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
42
4-pentene-1,2-diol

-
pH 7.5, 30°C
42
4-pentene-1,2-diol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
5.5
D-mannitol

pH 7.5, 25°C, recombinant enzyme
36
D-mannitol
-
pH 7.5, 30°C
36
D-mannitol
pH 7.5, 25°C, recombinant enzyme
36
D-mannitol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.44
D-sorbitol

pH 7.5, 25°C, recombinant enzyme
1.4
D-sorbitol
-
pH 7.5, 30°C
1.4
D-sorbitol
pH 7.5, 25°C, recombinant enzyme
1.4
D-sorbitol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
270
glycerol

pH 7.5, 25°C, recombinant enzyme
350
glycerol
-
pH 7.5, 30°C
350
glycerol
pH 7.5, 25°C, recombinant enzyme
350
glycerol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
430
L-arabinose

-
pH 7.5, 30°C
430
L-arabinose
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
25
L-Threitol

-
pH 7.5, 30°C
25
L-Threitol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.007
xylitol

pH 7.5, 25°C, recombinant enzyme
0.29 - 0.35
xylitol
recombinant oxidase-peroxidase fusion mutant enzyme, pH 7.5, temperature not specified in the publication
0.32
xylitol
-
pH 7.5, 30°C
0.32
xylitol
pH 7.5, 25°C, recombinant enzyme
0.32
xylitol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
additional information
additional information

-
substrate specificity and steady state kinetics, overview
-
additional information
additional information
steady-state kinetic analysis, overview
-
additional information
additional information
steady-state kinetic analysis, overview
-
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0.1 - 0.74
(R)-1-phenyl-1,2-ethanediol
0.0004 - 0.008
(S)-1-phenyl-1,2-ethanediol
0.1 - 0.36
1-phenyl-1,2-ethanediol
0.1
(R)-1-phenyl-1,2-ethanediol

pH 7.5, 25°C, recombinant enzyme
0.74
(R)-1-phenyl-1,2-ethanediol
-
pH 7.5, 30°C
0.74
(R)-1-phenyl-1,2-ethanediol
pH 7.5, 25°C, recombinant enzyme
0.74
(R)-1-phenyl-1,2-ethanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.0004
(S)-1-phenyl-1,2-ethanediol

pH 7.5, 25°C, recombinant enzyme
0.008
(S)-1-phenyl-1,2-ethanediol
-
pH 7.5, 30°C
0.008
(S)-1-phenyl-1,2-ethanediol
pH 7.5, 25°C, recombinant enzyme
0.008
(S)-1-phenyl-1,2-ethanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
4.4
1,2,4-butanetriol

-
pH 7.5, 30°C
4.4
1,2,4-butanetriol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.29
1,2-Butanediol

-
pH 7.5, 30°C
0.29
1,2-Butanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
2
1,2-hexanediol

-
pH 7.5, 30°C
2
1,2-hexanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.85
1,2-pentanediol

-
pH 7.5, 30°C
0.85
1,2-pentanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.1
1-phenyl-1,2-ethanediol

pH 7.5, 25°C, recombinant enzyme
0.36
1-phenyl-1,2-ethanediol
-
pH 7.5, 30°C
0.36
1-phenyl-1,2-ethanediol
pH 7.5, 25°C, recombinant enzyme
0.36
1-phenyl-1,2-ethanediol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.017
2-amino-1-pentanol

-
pH 7.5, 30°C
0.017
2-amino-1-pentanol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.34
3-butene-1,2-diol

-
pH 7.5, 30°C
0.34
3-butene-1,2-diol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.1
3-butenol

-
pH 7.5, 30°C
0.1
3-butenol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
0.35
4-pentene-1,2-diol

-
pH 7.5, 30°C
0.35
4-pentene-1,2-diol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C
2.5
D-mannitol

pH 7.5, 25°C, recombinant enzyme
9.2
D-mannitol
-
pH 7.5, 30°C
9.2
D-mannitol
pH 7.5, 25°C, recombinant enzyme
9.2
D-mannitol
-
in 50 mM sodium phosphate buffer, at pH 7.5 and 30°C