| Strain | Pseudomonas stutzeri A1501 |
| GI | 146281163 |
| Locus Tag | PST_0777 |
| Description | DNA-directed RNA polymerase subunit beta |
| Strain | Pseudomonas putida S16 |
| GI | 339485380 |
| Locus Tag | PPS_0443 |
| Description | DNA-directed RNA polymerase subunit beta |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648859 |
| Locus Tag | HCH_06224 |
| Description | DNA-directed RNA polymerase subunit beta |