| Strain | Pseudomonas fluorescens A506 |
| GI | 387895656 |
| Locus Tag | PflA506_4547 |
| Description | transcription termination factor NusA |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472327374 |
| Locus Tag | H681_21065 |
| Description | transcription elongation factor NusA |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644100 |
| Locus Tag | HCH_01238 |
| Description | transcription elongation factor NusA |