TABLE 1.
Proposed division of class D β-lactamases by Poirel et al. (19)
| Group | Examples | Host |
|---|---|---|
| Acquired narrow-spectrum β-lactamases | OXA-1, OXA-2, and OXA-10 subgroups; OXA-20, OXA-21, OXA-22, OXA-29, and OXA-30 | Mainly identified from Enterobacterales and P. aeruginosa |
| Acquired expanded-spectrum β-lactamases | OXA-11, OXA-14, OXA-15, OXA-16, OXA-17, OXA-18, OXA-19, OXA-28, OXA-31, OXA-32, OXA-35, OXA-45, and OXA-53 | Mainly identified from P. aeruginosa |
| Acquired carbapenem-hydrolyzing β-lactamases | OXA-23, OXA-40, OXA-58, and OXA-97 | Mainly identified from Acinetobacter spp. |
| OXA-48 and OXA-48-like | Mainly identified from Enterobacterales | |
| Naturally occurring types | OXA-10 | Acinetobacter baumannii |
| OXA-12 | Aeromonas jandaei | |
| OXA-23 | Acinetobacter radioresistans | |
| OXA-61 | Campylobacter jejuni | |
| OXA-42 and OXA-43 | Burkholderia pseudomallei | |
| OXA-50 | Pseudomonas aeruginosa | |
| OXA-51 | Acinetobacter baumannii | |
| OXA-54 | Shewanella oneidensis | |
| OXA-57 | Burkholderia pseudomallei |