| Strain | Pseudomonas fluorescens Pf0-1 |
| GI | 77457015 |
| Locus Tag | Pfl01_0788 |
| Description | AmpE |
| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431925915 |
| Locus Tag | Psest_0726 |
| Description | membrane protein required for beta-lactamase induction |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644746 |
| Locus Tag | HCH_01922 |
| Description | membrane protein required for beta-lactamase induction |