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Literature summary for 1.1.1.19 extracted from

  • York, J.L.; Grollman, A.P.; Bublitz, C.
    TPN-L-gulonate dehydrogenase (1961), Biochim. Biophys. Acta, 47, 298-306.
    View publication on PubMed

General Stability

General Stability Organism
EDTA 1 mM protects against heat denaturation at 40°C Sus scrofa
lyophilization destroys activity Sus scrofa

Inhibitors

Inhibitors Comment Organism Structure
p-chloromercuribenzoate
-
Sus scrofa

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.02
-
NADP+ uncoupled reaction Sus scrofa
7.3
-
L-gulonate
-
Sus scrofa

Organic Solvent Stability

Organic Solvent Comment Organism
Acetone inactivates Sus scrofa
Ethanol inactivates Sus scrofa

Organism

Organism UniProt Comment Textmining
Sus scrofa
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Sus scrofa

Source Tissue

Source Tissue Comment Organism Textmining
kidney
-
Sus scrofa
-

Storage Stability

Storage Stability Organism
-5°C, 2 weeks Sus scrofa

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
D-galacturonate + NADPH
-
Sus scrofa ?
-
r
L-gulonate + NADP+
-
Sus scrofa D-glucuronate + NADPH
-
r
additional information no reaction with gamma-lactones of the substrates Sus scrofa ?
-
?

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
40
-
15 min, 50% loss of activity, ammonium sulfate fraction Sus scrofa
50
-
15 min, complete inactivation, ammonium sulfate fraction Sus scrofa

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8.6 9.3
-
Sus scrofa

pH Stability

pH Stability pH Stability Maximum Comment Organism
7
-
most stable Sus scrofa

Cofactor

Cofactor Comment Organism Structure
NADP+
-
Sus scrofa
NADPH
-
Sus scrofa