| Strain | Pseudomonas aeruginosa DK2 |
| GI | 392985756 |
| Locus Tag | PADK2_21870 |
| Description | sigma E regulatory protein MucB/RseB |
| Strain | Pseudomonas sp. UW4 |
| GI | 426408192 |
| Locus Tag | PputUW4_01280 |
| Description | sigma factor algU regulatory protein MucB |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644626 |
| Locus Tag | HCH_01792 |
| Description | sigma factor algU negative regulatory protein MucB |