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. 1991 Mar 15;47(3):248-9.
doi: 10.1007/BF01958149.

Inhibition of phosphoenolpyruvate carboxykinase by 6-phosphogluconate in rat liver

M Kaloyianni  1
Affiliations

Inhibition of phosphoenolpyruvate carboxykinase by 6-phosphogluconate in rat liver

M Kaloyianni. Experientia. .

Abstract

Various concentrations of 6-phosphogluconate inhibit rat liver phosphoenolpyruvate carboxykinase activity. 0.04 mM 6-phosphogluconate, which is the concentration found in vivo, caused a 50% inhibition of 6-phosphoenolpyruvate carboxykinase activity. 6-Phosphogluconate lowered the Vmax of the enzyme and increased the concentration of phosphoenolpyruvate required to achieve one-half of the maximum velocity. The role of 6-phosphogluconate as a regulator of the coordination of fluxes through three metabolic pathways is discussed.

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