| Strain | Pseudomonas syringae pv. tomato str. DC3000 | 
| GI | 28867847 | 
| Locus Tag | PSPTO_0619 | 
| Description | DNA-directed RNA polymerase subunit beta | 
| Strain | Pseudomonas fluorescens F113 | 
| GI | 378953190 | 
| Locus Tag | PSF113_5302 | 
| Description | protein RpoB | 
| Strain | Pseudomonas aeruginosa PA7 | 
| GI | 152984487 | 
| Locus Tag | PSPA7_0830 | 
| Description | DNA-directed RNA polymerase subunit beta |