| aaRS | aminoacyl-tRNA synthetase |
| DTT | dithiothreitol |
| EDTA | 2,2′,2″,2‴-(Ethane-1,2-diyldinitrilo)tetraacetic acid |
| HEPES | 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid |
| HisRS | histidyl-tRNA synthetase |
| PEI | Polyethylenimine |
| Thg1 | tRNAHis guanylyltransferase |
| TLC | thin layer chromatography |