Distribution of bottleneck relative locations for E. coli genes. The distribution is shown for three groups of E. coli genes: all genes (blue); highly expressed genes (green); and lowly expressed genes (red). For all groups only genes longer than 100 codons are shown (this cutoff retains 90% of the E. coli genes). This resulted in 442 highly expressed genes (out of the top 500) and 473 lowly expressed genes (out of the bottom 500).
Navon and Pilpel Genome Biology 2011 12:R12 doi:10.1186/gb-2011-12-2-r12