3AOC:
reference: Structures of the multidrug exporter AcrB reveal a proximal multisite drug-binding pocket., Nakashima R, Sakurai K, Yamasaki S, Nishino K, Yamaguchi A, Nature. 2011 Nov 27;480(7378):565-9. doi: 10.1038/nature10641. PMID: 22121023

This OCA Structure page
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