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Literature summary for 4.1.1.31 extracted from

  • Nisi, P.D.; Zocchi, G.
    Phosphoenolpyruvate carboxylase in cucumber (Cucumis sativus L.) roots under iron deficiency: activity and kinetic characterization (2000), J. Exp. Bot., 51, 1903-1909.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
D-glucose 6-phosphate allosteric activator Cucumis sativus

Inhibitors

Inhibitors Comment Organism Structure
malate 1 mM Cucumis sativus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.069
-
phosphoenolpyruvate pH 8.0, 25°C, enzyme from roots grown in presence of Fe2+ Cucumis sativus
0.091
-
phosphoenolpyruvate pH 8.0, 25°C, enzyme from roots grown in absence of Fe2+ Cucumis sativus
0.23
-
HCO3- pH 8.0, 25°C, enzyme from roots grown in absence of Fe2+ Cucumis sativus
0.24
-
HCO3- pH 8.0, 25°C, enzyme from roots grown in presence of Fe2+ Cucumis sativus

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ KM-value for the enzyme from roots grown in presence of Fe2+ is 0.93 mM, The KM-value from enzyme grown in absence of Fe2+ is 0.91 mM Cucumis sativus

Organism

Organism UniProt Comment Textmining
Cucumis sativus
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
root
-
Cucumis sativus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
phosphoenolpyruvate + HCO3-
-
Cucumis sativus phosphate + oxaloacetate
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8
-
activity of the enzyme from roots grown in absence of Fe2+ is about 4 times higher than the activity of the enzyme grown in presence of Fe2+ Cucumis sativus