| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15595961 |
| Locus Tag | PA0764 |
| Description | negative regulator for alginate biosynthesis MucB |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472324512 |
| Locus Tag | H681_06710 |
| Description | sigma E regulatory protein MucB/RseB |
| Strain | Pseudomonas protegens Pf-5 |
| GI | 70728829 |
| Locus Tag | PFL_1450 |
| Description | sigma factor AlgU regulatory protein MucB |