Table 163 Relative specific activities for combinations of n

Table 16.3: Relative specific activities for combinations of nucleotide effectors. A value greater than one indicates stimulation, a value less than one indicates inhibition Aspartate Concentration Nucleotide Effector 2.5 mM 5.0 mM ATP 1.86 1.35 0.43 CTP 0.31 0.57 0.71 GTP 0.95 0.95 ATP/CTP 0.70 0.85 1.98 ATP/GTP 1.58 1.96 1.52 ATP/UTP CTP/GTP 0.41 0.58 0.06 CTP/UTP 0.05 0.84 GTP/UTP 0.66

Solution

The UTP/CTP combination will have more effect because of the values are farthest value under one.

It means tow nucleotides which are from same group; pyrimidine. That is indicating that pyrimidine has more effects to inhibit the ATcase.