| Strain | Pseudomonas syringae pv. syringae B728a |
| GI | 66045698 |
| Locus Tag | Psyr_2462 |
| Description | nitrite/sulfite reductase, hemoprotein beta-component, ferrodoxin-like:nitrite and sulfite reductase 4Fe-4S region |
| Strain | Pseudomonas aeruginosa LESB58 |
| GI | 218892208 |
| Locus Tag | PALES_34891 |
| Description | sulfite reductase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83645329 |
| Locus Tag | HCH_02538 |
| Description | sulfite reductase subunit beta (hemoprotein) |