Table II.
Effect of metabolites on nr-G3PDH activity
| Metabolite | Concentration | Activity |
|---|---|---|
| mm | % | |
| ATP | 5 | 38 |
| ATP | 2.5 | 56 |
| ATP | 1 | 68 |
| ATP | 0.5 | 80 |
| ADP | 5 | 71 |
| ADP | 2.5 | 79 |
| ADP | 0.5 | 100 |
| PEP | 5 | 64 |
| PEP | 0.5 | 94 |
| Fru-1,6-bisP | 2.5 | 87 |
Enzyme activity was measured in the presence of metabolite at the concentration indicated. The results are means of duplicate assays and activity is expressed as percentage of control. Other metabolites tested, but without significant effects on activity, were Man-6-P (5 mm), Fru-6-P (5 mm), Glc-6-P (5 mm), UDP-Glc (5 mm), Glc-1-P (5 mm), PPi (1 mm), Pi (2.5 mm), Fru-2,6-bisP (2.5 mm), and 50 mm mannitol, Suc, Fru, or Glc.