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Phosphoenolpyruvate carboxykinase (PEPCK) catalyzes the initial step in hepatic gluconeogenesis. In the fasted state, PEPCK gene expression is activated by glucagon (via cAMP) and glucocorticoids.(More)
Insulin represses gluconeogenesis, in part, by inhibiting the transcription of genes that encode rate-determining enzymes, such as phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase(More)