Phosphoenolpyruvate carboxylase

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An enzyme in the carboxylases responsible for the formation of the four-carbon compound oxaloacetate by catalyzing the binding of one molecule of carbon dioxide to the three-carbon compound phosphoenolpyruvate.


Phosphoenolpyruvate carboxylase is vital in CAM and C4 plants during photosynthesis. It serves as the catalyst for the following chemical reaction:

PEP + CO2oxaloacetate + Pi

Abbreviation: PEPC, PEPCase, PEP carboxylase

See also: CAM plant, C4 plant