Translational regulatory features among genes bearing or lacking uAUG. A-C. Human and mouse uAUG-less and uAUG genes were analyzed for the length of their 5′UTR (A), 3′UTR (B) and coding region (C). The data is presented as boxplots with the median, 25% and 75% quartile values; the top and the bottom whiskers represent the 75–87.5% and 12.5-25% of the population, respectively. In all figures the differences were calculated using either Mann Whitney or Kruskal-Wallis test and *, **and ***denote p-value < 0.05, 0.01, 0.001, respectively. The blue and the brown colors represent human and mouse data, respectively.