| Strain | Pseudomonas putida S16 |
| GI | 339485774 |
| Locus Tag | PPS_0843 |
| Description | signaling modulator of AmpD, AmpE |
| Strain | Pseudomonas stutzeri ATCC 17588 = LMG 11199 |
| GI | 339495672 |
| Locus Tag | PSTAB_3595 |
| Description | inner membrane protein AmpE |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644746 |
| Locus Tag | HCH_01922 |
| Description | membrane protein required for beta-lactamase induction |