| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15596353 |
| Locus Tag | PA1156 |
| Description | NrdA, catalytic component of class Ia ribonucleotide reductase |
| Strain | Pseudomonas resinovorans NBRC 106553 |
| GI | 512617452 |
| Locus Tag | PCA10_17990 |
| Description | ribonucleoside-diphosphate reductase alpha subunit |
| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28868877 |
| Locus Tag | PSPTO_1671 |
| Description | ribonucleotide-diphosphate reductase subunit alpha |