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Literature summary extracted from

  • Rao, S.; Reiskind, J.; Bowes, G.
    Light regulation of the photosynthetic phosphoenolpyruvate carboxylase (PEPC) in Hydrilla verticillata (2006), Plant Cell Physiol., 47, 1206-1216.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
4.1.1.31 D-glucose 6-phosphate
-
 Hydrilla verticillata

Inhibitors

EC Number Inhibitors Comment Organism Structure
4.1.1.31 malate
-
 Hydrilla verticillata

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
4.1.1.31 0.79
-
 phosphoenolpyruvate C3 extract, light-harvested PEPC in the absence of D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 0.92
-
 phosphoenolpyruvate C3 extract, dark-harvested PEPC in the absence of D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 1.89
-
 phosphoenolpyruvate C3 extract, light-harvested PEPC in the presence of 5 mM D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 2.26
-
 phosphoenolpyruvate C3 extract, dark-harvested PEPC in the presence of 5 mM D-glucose 6-phosphate Hydrilla verticillata

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
4.1.1.31 Mg2+
-
 Hydrilla verticillata

Organism

EC Number Organism UniProt Comment Textmining
4.1.1.31 Hydrilla verticillata
-
-
-

Posttranslational Modification

EC Number Posttranslational Modification Comment Organism
4.1.1.31 phosphoprotein
-
 Hydrilla verticillata

Source Tissue

EC Number Source Tissue Comment Organism Textmining
4.1.1.31 leaf
-
 Hydrilla verticillata
-
4.1.1.31 additional information phosphoenolpyruvate carboxylase contains two isoforms in Hydrilla verticillata, hvpepc3 and hvpepc4. Transcript expression of hvpepc4 is substantially up-regulated during C4 induction, especially in the light. It is suggested that hvpepc4 encodes the C4 photosynthetic PEPC, and hvpepc3 encodes an anaplerotic form Hydrilla verticillata
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
4.1.1.31 0.012
-
 photosynthetic rate: C3, harvest period: light, + 5 mM malate Hydrilla verticillata
4.1.1.31 0.016
-
 photosynthetic rate: C3, harvest period: dark, + 5 mM malate Hydrilla verticillata
4.1.1.31 0.019
-
 photosynthetic rate: C3, harvest period: light, + 5 mM malate and + 5 mM D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 0.023
-
 photosynthetic rate: C3, harvest period: light, control Hydrilla verticillata
4.1.1.31 0.027
-
 photosynthetic rate: C3, harvest period: dark, control Hydrilla verticillata
4.1.1.31 0.028
-
 photosynthetic rate: C3, harvest period: dark, + 5 mM malate and + 5 mM D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 0.052
-
 photosynthetic rate: C3, harvest period: light, + 5 mM D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 0.067
-
 photosynthetic rate: C3, harvest period: dark, + 5 mM D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 0.134
-
 photosynthetic rate: C3, harvest period: dark, + 5 mM malate Hydrilla verticillata
4.1.1.31 0.17
-
 photosynthetic rate: C4, harvest period: light, + 5 mM malate Hydrilla verticillata
4.1.1.31 0.213
-
 photosynthetic rate: C3, harvest period: dark, control Hydrilla verticillata
4.1.1.31 0.326
-
 photosynthetic rate: C4, harvest period: light, control Hydrilla verticillata
4.1.1.31 0.374
-
 photosynthetic rate: C4, harvest period: light, + 5 mM malate and + 5 mM D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 0.433
-
 photosynthetic rate: C4, harvest period: light, + 5 mM D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 0.449
-
 photosynthetic rate: C3, harvest period: dark, + 5 mM malate and + 5 mM D-glucose 6-phosphate Hydrilla verticillata
4.1.1.31 0.461
-
 photosynthetic rate: C3, harvest period: dark, + 5 mM D-glucose 6-phosphate Hydrilla verticillata

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4.1.1.31 phosphoenolpyruvate + CO2
-
 Hydrilla verticillata phosphate + oxaloacetate
-
 ?

Synonyms

EC Number Synonyms Comment Organism
4.1.1.31 Hvpepc3
-
 Hydrilla verticillata
4.1.1.31 Hvpepc4
-
 Hydrilla verticillata
4.1.1.31 PEPC
-
 Hydrilla verticillata

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
4.1.1.31 8
-
-
 Hydrilla verticillata

IC50 Value

EC Number IC50 Value IC50 Value Maximum Comment Organism Inhibitor Structure
4.1.1.31 0.2
-
 harvest period: dark Hydrilla verticillata malate
4.1.1.31 0.4
-
 harvest period: light Hydrilla verticillata malate