| Strain | Pseudomonas syringae pv. syringae B728a |
| GI | 66044073 |
| Locus Tag | Psyr_0818 |
| Description | AmpE protein |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472324170 |
| Locus Tag | H681_04980 |
| Description | signaling modulator of AmpD, AmpE |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644746 |
| Locus Tag | HCH_01922 |
| Description | membrane protein required for beta-lactamase induction |