| T4 RNA Ligase Buffer, 10× | 1 μL |
| BSA (0.2 mg/mL, supplied with enzyme) | 1 μL |
| 10 mM ATP | 1 μL |
| RL5 or RL5D linker @ 20 μM | 1 μL |
| T4 RNA Ligase I (Fermentas) | 0.1 μL |
| T4 RNA Ligase Buffer, 10× | 1 μL |
| BSA (0.2 mg/mL, supplied with enzyme) | 1 μL |
| 10 mM ATP | 1 μL |
| RL5 or RL5D linker @ 20 μM | 1 μL |
| T4 RNA Ligase I (Fermentas) | 0.1 μL |