FIG. 7.

Comparison of the deduced amino acid sequence of the qacG product (QacG) with that of other proteins of the SMR family (38). QacF, QacF protein encoded by a gene cassette from In40 of Enterobacter aerogenes BM2688 (42); QacE, QacE protein encoded by a gene cassette from In16 (39); QacEΔ1, QacE derivative encoded by the truncated qacEΔ1 allele found in the 3′-CS of several sul1-associated integrons (39, 54); EmrE, EmrE ethidium efflux protein from E. coli (45); QacC, QacC protein from Staphylococcus aureus (29). Identical residues are indicated by asterisks; conserved amino acid substitutions are indicated by dots.