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Geometry of the export machinery. The export machinery as built by Abrusci et al. [23••]. The SctV nonameric cage is represented as surface in light pink with fitted atomic model of the Shigella flexneri SctV-C (PDB-4a5p), in magenta. ATPase and its stalk are modeled using the atomic model form the Escherichia coli SctN (PDB-2obm) and the flagellar homologue of SctO form Salmonella typhimurium (PDB-3ajw) and colored in purple and orange, respectively.
