Figure 5From: Promoter features related to tissue specificity as measured by Shannon entropyBase-composition profiles for ubiquitous and tissue-specific genes with and without start CpG islands. Data is for human genes; similar patterns were observed in mouse. (a) Ubiquitous genes with a CpG island; (b) tissue-specific genes with a CpG island; (c) ubiquitous genes with no CpG island; and (d) tissue-specific genes with no CpG island. Note differences in upstream C+G content, peak sizes at TATA box (-35 bp) and initiator positions, and downstream C versus G differences.Back to article page