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. Author manuscript; available in PMC: 2011 Oct 1.
Published in final edited form as: Mol Microbiol. 2010 Aug 20;78(1):203–217. doi: 10.1111/j.1365-2958.2010.07325.x

Fig. 1.

Fig. 1

The signal peptides of a subset of autotransporters and TPS exoproteins contain a conserved sequence motif. A. The EspP signal peptide (EspPSP) consists of typical N, H and C regions plus a ~30 residue N-terminal extension. The derivatives of EspPSP that were used in this study are shown. The OmpA signal peptide (OmpASP) is shown for comparison. B. The first 24 residues of the N-terminal signal peptide extensions of selected serine protease autotransporters of Enterobacteriaceae (SPATEs), other autotransporters, and TPS exoproteins were aligned using Clustal V. The organism that produces each protein is indicated in parentheses. Invariant residues are shown in red and highly conserved residues are shown in black.