TABLE 1.
CTX-M variants from clinical isolates that contain the mutations presented in this studya
| Substitution(s) | CTX-M-1 | CTX-M-2 | CTX-M-9 | CTX-M-25 |
|---|---|---|---|---|
| A77V | CTX-M-1, -23, -60, -61 | CTX-M-51, -65, -87, -90 | CTX-M-91 | |
| P167S | CTX-M-62 | CTX-M-19, -99 | ||
| D240G | CTX-M-15, -28, -29, -33, -71, -82, -88, -96, -101, -107, -108, -109, -117 | CTX-M-43, -131 | CTX-M-16, -27, -93, -102, -121 | CTX-M-41, -94, -100 |
| A77V/P167S | CTX-M-52 | |||
| A77V/D240G | CTX-M-32, -53, -55/57, -69, -79, -114 | CTX-M-98, -105 | CTX-M-25 |
a
The subfamily to which the CTX-M variant belongs is in bold. The CTX-M variants listed contain substitutions in addition to those listed in the “Substitution(s)” column.