| Strain | Pseudomonas putida KT2440 |
| GI | 26987596 |
| Locus Tag | PP_0860 |
| Description | flavodoxin/nitric oxide synthase |
| Strain | Pseudomonas syringae pv. phaseolicola 1448A |
| GI | 71735517 |
| Locus Tag | PSPPH_4268 |
| Description | sulfite reductase (NADPH) flavoprotein, alpha-component |
| Strain | Azotobacter vinelandii CA6 |
| GI | 482899885 |
| Locus Tag | AvCA6_12440 |
| Description | sulfite reductase (NADPH) flavoprotein alpha-component/ iron-regulated membrane protein |