Table 2.
Substrate specificity of recombinant OsSPS1 and OsSPS2
| Alyllic substrate | Relative activity (%) |
|
| OsSPS1 | OsSPS2 | |
| DMAPP | 6.00±5.08 | 18.1±6.59 |
| GPP | 59.3±30.8 | 100 |
| FPP | 100 | 44.0±31.1 |
| GGPP | 8.23±4.26 | 34.6±9.80 |
The absolute activities of OsSPS1 and OsSPS2 were 13.7±1.03 pkat mg−1 protein (for FPP), 0.17±0.03 pkat mg−1 protein (for GPP), respectively.