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(A) Cryo-EM asymmetric structure of AcrBZ-Tolc pump of E. coli at 6.50 Å resolution (PDB-ID: 5NG5). (B) Binding affinity of catechin to AcrB protein of E. coli (docked catechin in yellow whereas docked minocycline is in red color). (C) the amino acids involved in the binding site of catechin to AcrB protein.
