Figure 3: Multidrug recognition by RamR.
From: The crystal structure of multidrug-resistance regulator RamR with multiple drugs
Substrate-binding site of RamR with a bound molecule berberine, crystal violet, dequalinium, ethidium bromide or rhodamine 6G. Key residues are shown, including residue Phe155, which is involved in π–π stacking interactions with drugs. Carbon atoms of drugs and RamR are shown in magenta and green, respectively. Nitrogen, oxygen and sulphur atoms are shown in blue, red and yellow, respectively.
