Table 1:
General classification of carbapenemases
| Molecolar Classa | A | B | D |
| Functional groupb | 2f | 3 | 2d |
| Active site | Serine | Zn2+ | Serine |
| Prominent Enzyme | GES, SME, NMC, KPC | IMP, VIM, SPM, GIM, SIM, NDM | OXA |
| ATM Hydrolysis | + | - | - |
| EDTA Inhibition | - | + | - |
| CLA Inhibition | ± | - | ± |
| APBA Inhibition | + | - | - |
| Most Common Bacteria | Enterobacteriaceae (rare reports in P. aeruginosa) | P. aeruginosa Enterobacteriaceae Acinetobacter spp. | Acinetobacter spp. |
ATM: aztreonam; APBA: 3′-Aminophenylboronic acid; EDTA: ethylene diamine tetra-acetic acid; CLA: clavulanic acid
a
Ambler classification.
b
Bush, Jacoby and Medeiros classification.