Table 4.
Tetracycline resistance genes unique to environmental bacteria.
| Efflux 12/27 (44%) | Ribosomal protection 3/12 (25%) | Enzymatic 2/3 (66%) |
|---|---|---|
| tetA(P), tet(V), tet(30), tet(35) | tetB(P), otr(A), tet | tet(X)a, tet(34) |
| tet(33), tet(39), tet(41), | ||
| tet(42), tet(43) | ||
| otr(B), otr(C), tcr3 |
aThe tet(X) is only functional in environmental Spingobacterium spp. although it is found in Bacteroides spp.