Table 4.
Most effective additives on Tobacco etch virus (TEV) protease solubility based on Plackett- Burman analysis with three levels of concentrations, low, high and middle ones.
| Additives | Concentrations (mM) | ||
|---|---|---|---|
| Low | Middle | High | |
| Proline | 100 | 300 | 500 |
| Sodium selenite | 5 | 10 | 15 |
| CuCl2 | 5 | 10 | 15 |