Figure 2.

Organism-specific frequencies of each promoter class. Each column represents a class of promoters. Starting at the bottom of each column we present the class name, (B) the average preference of promoter classes between species, a representative shape of the promoter class (pink areas show denser clusters whereas light grayish gold color shows lower density clusters) and (A) the proportion of promoter classes in Arabidopsis thaliana, Drosophila melanogaster, Homo sapiens and Oryza sativa.

Gagniuc and Ionescu-Tirgoviste BMC Genomics 2012 13:512   doi:10.1186/1471-2164-13-512
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