| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431928190 |
| Locus Tag | Psest_3098 |
| Description | negative regulator of sigma E activity |
| 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 |