Fig. 2

Interaction between OprM and MexA. Close-up views of the α-hairpin of OprM (shown in lemon) and the α-hairpin of MexA [shown in magenta (SC protomer) or orange (LC protomer)] in the 0° state (a) or 60° state (b). Previously proposed RLS motifs are shown as balls colored in cyan (R96), gray (L100), and yellow (S107)