TABLE 5.
Characteristics of novel, unrelated ESBLs
| β-Lactamase | Closest relative | pI | Preferred substratea | Country of origin | Bacterial species | Reference |
|---|---|---|---|---|---|---|
| BES-1 | Penicllinase from Yersinia enterocolitica | 7.5 | CTX, CAZ, ATM | Brazil | S. marcescens | 20 |
| FEC-1 | 8.2 | CTX | Japan | E. coli | 93 | |
| GES-1 | Penicillinase from P. mirabilis | 5.8 | CAZ | French Guiana | K. pneumoniae | 136 |
| CME-1 | VEB-1 | >9.0 | CAZ | Isolated from reference strain | Chryseobacterium meningosepticum | 147 |
| PER-1 | PER-2 | 5.4 | CAZ | France | P. aeruginosa | 113 |
| PER-2 | PER-1 | 5.4 | CAZ | Argentina | S. enterica serovar Typhimurium | 14 |
| SFO-1 | AmpA from S. fonticola | 7.3 | CTX | Japan | E. cloacae | 94 |
| TLA-1 | CME-1 | 9.0 | CAZ, CTX, ATM | Mexico | E. coli | 153 |
| VEB-1 | PER-1, PER-2 | 5.35 | CAZ, ATM | Vietnam/Thailand | E. coli | 135 |
a
CTX, cefotaxime; CAZ, ceftazidime; ATM, aztreonam.