Kinetics of ATP-PFK from A. methanolica
and effect of PPi on ATP-PFK activity. (A) ATP-PFK activity
versus ATP concentration at a fixed F-6-P concentration (10 mM). ▪, 0
mM PPi; ●, 1 mM PPi; ▾, 2 mM
PPi; ▴, 4 mM PPi. (B) ATP-PFK activity versus
F-6-P concentration at fixed ATP concentrations. ○, 0 mM
PPi; ▵, 2 mM PPi; □, 4 mM
PPi. Kinetic parameters are given in Table 4.