PCK1 is a main control point for the regulation of gluconeogenesis. This cytosolic enzyme, along with GTP, catalyzes the formation of phosphoenolpyruvate from oxaloacetate, with the release of carbon dioxide and GDP. The expression of the corresponding gene can be regulated by insulin, glucocorticoids, glucagon, cAMP, and diet. A mitochondrial isozyme has also been characterized.
Synonyms: PCK1, PEPC, GTP, MGC22652, PEP carboxykinase, PEPCK 1, PEPCK1, PEPCKC, Phosphoenolpyruvate carboxykinase 1, Phosphoenolpyruvate carboxylase, Phosphopyruvate carboxylase.