| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15595961 |
| Locus Tag | PA0764 |
| Description | negative regulator for alginate biosynthesis MucB |
| Strain | Pseudomonas resinovorans NBRC 106553 |
| GI | 512619921 |
| Locus Tag | PCA10_42680 |
| Description | sigma-22 factor regulatory protein MucB |
| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28871364 |
| Locus Tag | PSPTO_4222 |
| Description | sigma factor algU regulatory protein MucB |