| Strain | Pseudomonas putida BIRD-1 |
| GI | 386013315 |
| Locus Tag | PPUBIRD1_3799 |
| Description | Helix-hairpin-helix repeat-containing competence protein ComEA |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472326526 |
| Locus Tag | H681_16820 |
| Description | ComE operon protein 1 |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83645183 |
| Locus Tag | HCH_02375 |
| Description | DNA uptake protein and related DNA-binding protein |