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Figure 3
Oligomeric assemblies of InvA and EscJ. (a) The crystallographic tetrameric assembly of the crystallized InvA construct is shown in two views side by side, related by a 90° rotation about a vertical axis. Each of the chains is given a separate color and the COOH-terminus of the green polypeptide is shown; the spacer helix is marked on the right image. (b) The EscJ tetramer present in the asymmetric unit of the crystals, alongside a surface representation (colored by electrostatic potential) of the 24-mer ring model of EscJ proposed to form a portion of the inner membrane ring of the basal body of the type III secretion system.

Journal logoBIOLOGICAL
CRYSTALLOGRAPHY
ISSN: 1399-0047
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