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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Biochim Biophys Acta. 2011 Aug 22;1818(4):1067–1084. doi: 10.1016/j.bbamem.2011.08.020

Figure 1.

Figure 1

The general β-barrel fold. These E. coli OMPs exhibit characteristic typical of bacterial OM β-barrels, including short periplasmic turns, long extracellular loops (some of which fold back into the barrel lumen in the case of LamB, and an even number of β-strands. Note that OmpG (top, PDB ID: 2X9K) is monomeric, whereas LamB (bottom, PDB ID: 1AF6) forms stable trimers in the OM.