Distribution of potential AuxREs in the A. thaliana genome. A. The densities of four AuxRE variants (TGTCTC, TGTCGG, TGTSTSBC and AuxREP&S) are shown in different genomic regions. Each density was normalized to an average density of the motif in the whole genome. B. The percentage of the Arabidopsis genes, having potential AuxREs in 2 kb and 300 bp upstream regions to the annotated TSS. C. Distribution of different AuxRE variants along the [-2000; +250] regions relative to annotated TSS. Each density on panels A and C was normalized to the average one of the respective AuxRE variant estimated for the whole genome.