| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15598820 |
| Locus Tag | PA3624 |
| Description | L-isoaspartate protein carboxylmethyltransferase type II |
| Strain | Pseudomonas stutzeri A1501 |
| GI | 146281943 |
| Locus Tag | PST_1569 |
| Description | protein-L-isoaspartate O-methyltransferase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644701 |
| Locus Tag | HCH_01874 |
| Description | protein-L-isoaspartate O-methyltransferase |