Figure 2.

Gene density plots. (A) Density plot of position preference differences for 328 microbial genomes. Differences between mean position preference of translated coding sequences (CDSs) and ribosomal proteins (red) or between mean position preference of CDSs and ribosomal RNA (rRNA) (blue). Most microbial genomes CDSs have a higher mean position preference values than ribosomal proteins and rRNA (mean above 0). (B) Position preference densities for the 10% most highly expressed genes, non-highly expressed genes, rRNAs, tRNAs and ribosomal proteins in E. coli.

Willenbrock and Ussery BMC Molecular Biology 2007 8:11   doi:10.1186/1471-2199-8-11
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