phosphoenolpyruvate carboxylase


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phosphoenolpyruvate carboxylase

An enzyme that catalyses a two-step reaction: formation of carboxyphosphate and enolate form of pyruvate, and carboxylation of enolate with the release of phosphate. It replenishes oxaloacetate in the tricarboxylic acid cycle when operating in reverse. Phosphoenolpyruvate carboxylase is the recommended name for EC 4.1.1.31, orthophosphate:oxaloacetate carboxy-lyase (phosphorylating).

Phosphoenolpyruvate carboxylase  has also been used for:
(1) Phosphoenolpyruvate carboxykinase (GTP), EC 4.1.1.32 (GTP:oxaloacetate carboxy-lyase (transphosphorylating));
(2) Phosphoenolpyruvate carboxykinase (pyrophosphate), EC 4.1.1.38 (pyrophosphate:oxaloacetate carboxy-lyase (transphosphorylating)); and
(3) Phosphoenolpyruvate carboxykinase (ATP), EC 4.1.1.49 (ATP:oxaloacetate carboxy-lyase (transphosphorylating)).
References in periodicals archive ?
1985) PURIFICATION AND SOME PROPERTIES OF PHOSPHOENOLPYRUVATE CARBOXYLASE FROM BREVIBACTERIUM-FLAVUM AND ITS ASPARTATE OVERPRODUCING MUTANT, Journal of Biochemistry 97: 1119-1128.
Biochemically, CAM requires nighttime fixation of inorganic carbon catalyzed by the cytoplasmic phosphoenolpyruvate carboxylase (PEPC).
2] concentrations in the light and the dark on diurnal malate rhythm and phosphoenolpyruvate carboxylase activities in leaves of Littorella uniflora (L.
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