| Strain | Pseudomonas fluorescens A506 |
| GI | 387892530 |
| Locus Tag | PflA506_1309 |
| Description | RNA polymerase-associated helicase protein HepA/RapA |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472326816 |
| Locus Tag | H681_18275 |
| Description | ATP-dependent helicase HepA |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647726 |
| Locus Tag | HCH_05053 |
| Description | ATP-dependent helicase HepA |