The Regulatory Phosphorylation of C4 Phosphoenolpyruvate Carboxylase: a Cardinal Event in C4 Photosynthesis

  • Jean Vidal
  • Jean-Noël Pierre
  • Cristina Echevarria
Part of the Plant Gene Research book series (GENE)


Phosphoenolpyruvate (PEP) carboxylase (EC, PEPC) is a widely distributed enzyme in plant tissues (embryophytes), green algae (chlorobionts) and microorganisms, but it is not present in animals (O’Leary, 1982; Andreo et al., 1987). It catalyses the exergonic β-carboxylation of PEP (ΔG = −7kcal/mol) in the presence of a bivalent cation, generally Mg2+:

PEP + HCO 3 → OAA + Pi


Calvin Cycle Phosphoenolpyruvate Carboxylase Maize Leave PEPC Gene Regulatory Phosphorylation 


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© Springer-Verlag/Wien 1996

Authors and Affiliations

  • Jean Vidal
  • Jean-Noël Pierre
  • Cristina Echevarria

There are no affiliations available

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