| Component | Volume per reaction (μl) | Final concentration or amount |
|---|---|---|
| 2× Ligation buffer | 10 μl | 1 × reaction buffer |
| Xho I and Mfe I digested vector from step 28 (variable concentration) | variable | 50 ng |
| Xho I and EcoR I fragment from step 28 (variable concentration) | variable | 50 ng |
| Quick Ligase (2.0 × 106 units/ml) | 1.0 μl | 2,000 units |
| ddH2O | variable | To a final volume of 20 μl |