Tags: Chemical Compound, Chemical Substance.
Phosphoenolpyruvic acid (PEP) or phosphoenolpyruvate as the anion is an important chemical compound in biochemistry. It has the highest-energy phosphate bond found (-61.9 kJ/mol) in living organisms and is involved in glycolysis and gluconeogenesis. In plants it is also involved in the biosynthesis of various aromatic compounds and in carbon fixation; in bacteria it is also used as the source of energy for the phosphotransferase system.