| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15595961 |
| Locus Tag | PA0764 |
| Description | negative regulator for alginate biosynthesis MucB |
| Strain | Pseudomonas protegens CHA0 |
| GI | 501678953 |
| Locus Tag | PFLCHA0_c14860 |
| 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 |