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Literature summary for 1.8.5.1 extracted from

  • Foyer, C.H.; Halliwell, B.
    Purification and properties of dehydroascorbate reductase from spinach leaves (1977), Phytochemistry, 16, 1347-1350.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
Cu2+ 0.1 mM CuSO4, 98% inhibition Spinacia oleracea
dehydroascorbate at high concentrations Spinacia oleracea
iodoacetic acid 1 mM, 77% inhibition Spinacia oleracea
NEM 1 mM, 47% inhibition Spinacia oleracea
p-hydroxymercuribenzoate 1 mM, 70% inhibition Spinacia oleracea

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.34
-
dehydroascorbate
-
Spinacia oleracea
4.43
-
GSH
-
Spinacia oleracea

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
25000
-
gel filtration Spinacia oleracea

Organism

Organism UniProt Comment Textmining
Spinacia oleracea
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Spinacia oleracea
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Spinacia oleracea

Substrates and Products (Substrate)

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

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
50
-
10 min, 35% loss of activity Spinacia oleracea
60
-
10 min, complete inactivation Spinacia oleracea

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5
-
-
Spinacia oleracea