Figure 2
From: Housekeeping genes tend to show reduced upstream sequence conservation
Promoter sequence conservation in HK and non-HK genes. The x-axis shows 100 nucleotide bins along 2 Kb upstream of the TSS. The y-axis shows percent conservation ((1 - dSM) × 100). Genes were grouped according to the presence or absence of a CpG island and Ka/Ks values. Significant p values for 2 Kb promoter sequence divergence comparisons are indicated below the curves. Beneath these, the p values obtained for regions -2,000 to -500 (left), and -500 to the TSS (right), are given in smaller font size.