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maps in the hypothetical crystal structure of AcrA.

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The crystal structure of MexA is presented, an AcrA homologue from Pseudomonas aeruginosa.  Higgins, M. K.Bokma, E.Koronakis, E.Hughes, C.Koronakis, V.: The Structure of the Periplasmic Component of a Drug Efflux Pump To be Published.  AcrA has yet to be crystallized. Residues highlighted are the homologous residues present in MexA to mutations isolated in AcrA.