Sequence logos representing the PEXEL motifs of eight Plasmodium species. Note that only the proteins presented in Table 2 were used to draw the individual PEXEL motifs. Phylogenetic relationships were drawn according to Figure 1. For details on how the PEXEL motif mediates protein export refer to the recent review by Goldberg and Cowman . Abbreviations: Pfa, P. falciparum; Pre, P. reichenowi; Pga, P. gallinaceum; Pkn, P. knowlesi; Pvi, P. vivax; Pch, P. chabaudi; Pyo, P. yoelii, Pbe, P. berghei. See also Additional file 8.