Distribution of distances from gene. The distance of the motifs with respect to the translation start site (x-axis) is shown. Motifs are grouped by homology of the downstream gene (cluster identifier is on the y-axis). Most of the targets are located in the first 200 nt from the start of the gene, but some of them (and notably several corresponding to characterized ones) are located at larger distances. Red circles correspond to orthologous groups from Table 2.