| PIC | pre-initiation complex |
| e/aIF2 | Eukaryotic/archaeal initiation factor 2 |
| TC | Ternary complex eIF2-GTP-Met-tRNAiMet |
| LUCA | Last Universal Common Ancestor |
| PIC | pre-initiation complex |
| e/aIF2 | Eukaryotic/archaeal initiation factor 2 |
| TC | Ternary complex eIF2-GTP-Met-tRNAiMet |
| LUCA | Last Universal Common Ancestor |