Figure 4From: The role of the C8 proton of ATP in the regulation of phosphoryl transfer within kinases and synthetasesAcetate kinase activity and KIE. Effect of the concentration of ATP and C8D-ATP on the specific activity (A) and KIE (B) of E. coli acetate kinase. (A) "black circle " = ATP, black square" = C8D-ATP, (B) Black = KIE, Blue = KIED. The specific enzyme activity is expressed as μmoles ADP formed per minute per milligram protein.Back to article page