plasma insulin ( i ) , glucagon ( g ) and glucose , hepatic glycogen , fructose 2 , 6-bisphosphate ( f2 , 6-p2 ) , fructose 1 , 6-bisphosphate , phosphoenolpyruvate , and some liver key enzymes involved in glycolysis ( 6-phosphofructo-2-kinase/fructose-2 , 6-bisphosphatase ( 6-pf-2kinase/f-2,6-p2ase ) , activity ratio ( velocity at suboptimal substrate concentration/maximum velocity ) of pyruvate kinase ( pk-l ] and in gluconeogenesis ( phosphoenolpyruvate carboxykinase activity ) have been compared in young ( 2 months ) and old ( 16 months ) rats upon starvation or transition to a high protein ( hp ) diet .
C0031727
kinase
C0034348
pyruvate kinase