| Strain | Pseudomonas syringae pv. phaseolicola 1448A |
| GI | 71735596 |
| Locus Tag | PSPPH_0844 |
| Description | inner membrane protein AmpE |
| Strain | Pseudomonas fulva 12-X |
| GI | 333898803 |
| Locus Tag | Psefu_0602 |
| 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 |