| Identity | Similarity | |
| SPR-1 | 58.38% | 64.16% |
| B1: BCII | 15.6% | 24.85% |
| B1: IMP-1 | 15.6% | 23.12% |
| B1: NDM-1 | 13% | 21.67% |
| B2: CphA | 15.31% | 24.85% |
| B2: Sfh-1 | 15.31% | 23.41% |
| B3: FEZ-1 | 32.08% | 41.9% |
| B3: BJP-1 | 32.65% | 44.21% |
| B3: L1 | 33.23% | 43.35% |
| B3: SMB-1 | 30.05% | 42.77% |
| B3: AIM-1 | 30.34% | 41.32% |
| MPH | 11.27% | 21.38% |
| Glyoxalase II | 12.13% | 20.8% |