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Literature summary for 1.10.3.3 extracted from

  • Itoh, H.; Hirota, A.; Hirayama, K.; Shin, T.; Murao, S.
    Properties of ascorbate oxidase produced by Acremonium sp. HI-25 (1995), Biosci. Biotechnol. Biochem., 59, 1052-1056.
No PubMed abstract available

Activating Compound

Activating Compound Comment Organism Structure
CuCl2 1 mM, 2fold activation Acremonium

Inhibitors

Inhibitors Comment Organism Structure
azide 1 mM, complete inhibition Acremonium
cyanide 1 mM, 57% inhibition Acremonium
Fe3+ 1 mM, 91% inhibition Acremonium
H2S 1 mM, 97% inhibition Acremonium

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.29
-
L-ascorbate
-
Acremonium
0.47
-
O2
-
Acremonium

Metals/Ions

Metals/Ions Comment Organism Structure
copper
-
Acremonium

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
80000
-
-
Acremonium

Organism

Organism UniProt Comment Textmining
Acremonium
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
glycoprotein 11.2% carbohydrate Acremonium

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
D-isoascorbic acid + O2
-
Acremonium 2-dehydroisoascorbate + H2O
-
?
L-ascorbyl-6-palmitate + O2 36% of activity with L-ascorbate Acremonium L-dehydroascorbyl-6-palmitate
-
?
L-ascorbyl-6-stearate + O2 29% of activity with L-ascorbate Acremonium L-dehydroascorbyl-6-stearate
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
45
-
-
Acremonium

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
60
-
stable for 30 min Acremonium

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
1130
-
O2
-
Acremonium
3110
-
L-ascorbate
-
Acremonium

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
4
-
-
Acremonium

pH Stability

pH Stability pH Stability Maximum Comment Organism
6 10 at 30°C Acremonium