Table S3.
Structural homologs of NgrRnl N-domain
| Protein | Source | PDB ID | Z-score | RMSD |
| “tRNA binding” | Staphylococcus saprophyticus | 3BU2 | 9.4 | 2.9 Å at 93 Cα positions |
| Escherichia coli Trbp111 | 3ERS | 6.6 | 3.9 Å at 83 Cα positions | |
| Aminoacyl tRNA synthase | Thermus thermophilus PheRS | 1PYS | 8.9 | 2.9 Å at 89 Cα positions |
| Pyrococcus abyssi MetRS | 1MKH | 7.3 | 4.8 Å at 78 Cα positions | |
| DNA ligase | Chlorella virus PBCV1 (ATP) | IFVI | 2.8 | 6.5 Å at 60 Cα positions |
| Thermus filiformis (NAD+) | 1DGS | 2.3 | 4.5 Å at 61 Cα positions | |
| RNA capping | Candida albicans | 1P16 | 2.3 | 4.8 Å at 71 Cα positions |
| Chlorella virus PBCV1 | 1CKM | 2.1 | 4.9 Å at 58 Cα positions |