Base-composition profiles for ubiquitous and tissue-specific genes with and without start CpG islands

Copyright information:Taken from "Promoter features related to tissue specificity as measured by Shannon entropy"Genome Biology 2005;6(4):R33-R33.Published online 29 Mar 2005PMCID:PMC1088961.Copyright © 2005 Schug et al.; licensee BioMed Central Ltd. Data is for human genes; similar patterns were observed in mouse. Ubiquitous genes with a CpG island; tissue-specific genes with a CpG island; ubiquitous genes with no CpG island; and 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.