the effect of changing adp/atp ratios ( with total adenine nucleotides constant at 8 mmol/l ) on enzyme activity was measured at constant concentrations of the substrates magnesium d-isocitrate ( 0.10 mmol/l ) and nad+ ( 3.0 mmol/l ) , the positive effector magnesium citrate ( 1.0 mmol/l ) and the negative effector nadph ( 1.5 mmol/l ) at ph 7.4 .
C0001413
adenine
C0027270
nad