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. Author manuscript; available in PMC: 2010 May 1.
Published in final edited form as: Biochim Biophys Acta. 2009 Mar 13;1794(5):817–825. doi: 10.1016/j.bbapap.2009.02.017

Fig. 1.

Fig. 1

Structures of TolC (1EK9), AcrA (2F1M) and AcrB (2GIF) and their domains. Note that TolC and AcrB are shown as homotrimers, AcrA as a monomer. Locations of the static H3/H4 and mobile H7/H8 helices from two different TolC protomers are shown. OM and IM refer to the outer membrane and the inner membrane, respectively.