| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15596352 |
| Locus Tag | PA1155 |
| Description | NrdB, tyrosyl radical-harboring component of class Ia ribonucleotide reductase |
| Strain | Pseudomonas stutzeri DSM 10701 |
| GI | 397687574 |
| Locus Tag | PSJM300_12355 |
| Description | ribonucleotide-diphosphate reductase subunit beta |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83649535 |
| Locus Tag | HCH_06928 |
| Description | ribonucleotide reductase subunit beta |