| Strain | Pseudomonas mendocina ymp |
| GI | 146309207 |
| Locus Tag | Pmen_4193 |
| Description | gamma-glutamyltransferase |
| Strain | Pseudomonas stutzeri DSM 10701 |
| GI | 397687582 |
| Locus Tag | PSJM300_12395 |
| Description | gamma-glutamyltransferase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83649412 |
| Locus Tag | HCH_06798 |
| Description | gamma-glutamyltranspeptidase |