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Literature summary for 1.8.5.1 extracted from

  • Shigeoka, S.; Yasumoto, R.; Onishi, T.; Nakano, Y.; Kitaoka, S.
    Properties of monodehydroascorbate reductase and dehydroascorbate reductase and their participation in the regeneration of ascorbate in Euglena gracilis (1987), J. Gen. Microbiol., 133, 227-232.
No PubMed abstract available

Activating Compound

Activating Compound Comment Organism Structure
2-mercaptoethanol 1 mM, stimulates about 2.1fold Euglena gracilis
dithiothreitol 1 mM, stimulates about 2.7fold Euglena gracilis

Inhibitors

Inhibitors Comment Organism Structure
Co2+
-
Euglena gracilis
Fe3+ 1 mM, complete inhibition Euglena gracilis
NEM 0.5 mM, reversed by thiol reagents Euglena gracilis
PCMB 0.05 mM, reversed by thiol reagents Euglena gracilis
Zn2+ 1 mM, complete inhibition Euglena gracilis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.26
-
dehydroascorbate
-
Euglena gracilis
0.85
-
glutathione
-
Euglena gracilis

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol
-
Euglena gracilis 5829
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
28000
-
gel filtration Euglena gracilis

Organism

Organism UniProt Comment Textmining
Euglena gracilis
-
-
-

Purification (Commentary)

Purification (Comment) Organism
partial Euglena gracilis

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
7.68
-
-
Euglena gracilis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
GSH + dehydroascorbate
-
Euglena gracilis GSSG + ascorbate
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
38
-
-
Euglena gracilis

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
42
-
pH 7.0-8.0, stable up to Euglena gracilis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7
-
-
Euglena gracilis