Article
Conformation of the AcrB multidrug efflux pump in mutants of the putative proton relay pathway.
Journal of bacteriology - 1 Oct 2006
Su Chih-Chia, Li Ming, Gu Ruoyu, Takatsuka Yumiko, McDermott Gerry, Nikaido Hiroshi, Yu Edward W
Abstract excerpt
We previously reported the X-ray structures of wild-type Escherichia coli AcrB, a proton motive force-dependent multidrug efflux pump, and its N109A mutant. These structures presumably reflect the resting state of AcrB, which can bind drugs. After ligand binding, a proton may bind to an acidic residue(s) in the transmembrane domain, i.e., Asp407 or Asp408, within the putative network of electrostatically...
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