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Literature summary for 4.1.1.31 extracted from

  • Daniel, P.P.; Bryant, J.A.; Woodward, F.I.
    Phosphoenolpyruvate carboxylase from pennywort (Umbilicus rupestris) (1984), Biochem. J., 218, 387-393.
    View publication on PubMedView publication on EuropePMC

Activating Compound

Activating Compound Comment Organism Structure
glucose 6-phosphate maximal activation at 2 mM Umbilicus rupestris

Inhibitors

Inhibitors Comment Organism Structure
ADP
-
Umbilicus rupestris
Asp
-
Umbilicus rupestris
ATP
-
Umbilicus rupestris
citrate
-
Umbilicus rupestris
malate L-malate Umbilicus rupestris

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.2
-
phosphoenolpyruvate pH 8.2, enzyme from water stressed plants Umbilicus rupestris
0.23
-
phosphoenolpyruvate pH 8.2 Umbilicus rupestris
0.86
-
phosphoenolpyruvate pH 7.2, enzyme from water stressed plants Umbilicus rupestris
1.25
-
phosphoenolpyruvate pH 7.2 Umbilicus rupestris

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
185300
-
gel filtration Umbilicus rupestris

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
Phosphoenolpyruvate + CO2 Umbilicus rupestris Umbilicus rupestris switches from C3 photosynthesis to an incomplete form of crassulacean acid metabolism, referred to as CAM-idling, when exposed to water stress. This switch is accompanied by an increase in the activity of phosphoenolpyruvate carboxylase ?
-
?

Organism

Organism UniProt Comment Textmining
Umbilicus rupestris
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Umbilicus rupestris
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
phosphoenolpyruvate + CO2
-
Umbilicus rupestris phosphate + oxaloacetate
-
?
Phosphoenolpyruvate + CO2 Umbilicus rupestris switches from C3 photosynthesis to an incomplete form of crassulacean acid metabolism, referred to as CAM-idling, when exposed to water stress. This switch is accompanied by an increase in the activity of phosphoenolpyruvate carboxylase Umbilicus rupestris ?
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8 8.2
-
Umbilicus rupestris