Table II. Kinetic parameters (toward DMAPP) for recombinant heteromeric and heteromeric G(G)PPS of cucumber.
All results are presented as means ± sd of triplicate experiments.
| Enzyme | Kma | Kcat/Km |
|---|---|---|
| μm | s−1m−1 | |
| CsaGGPPS1 | 9.5 ± 0.1 | 52.0 ± 2.4 |
| CsaGGPPS1/CsaSSU I | 21.7 ± 2.5 | 173.1 ± 12.3 |
| CsaGGPPS1/CsaSSU II | 8.2 ± 0.1 | 133.1 ± 20.1 |
| CsaGGPS2 | 28.3 ± 5.5 | 60.8 ± 11.9 |
| CsaGGPS2/CsaSSU I | 11.9 ± 5.4 | 251.9 ± 37.7 |
| CsaGGPS2/CsaSSU II | 26.7 ± 1.6 | 122.9 ± 4.1 |
With 30 μm IPP as cosubstrate.