The energy profiles of CpG-related promoters and non-CpG-related promoters. The transcription start site is located at position 1000 in the top figures and position 250 in the bottom figures. All of the plots were smoothed with an average window of width 5. TSS, transcription start site.
Zhao et al. Genome Biology 2007 8:R17 doi:10.1186/gb-2007-8-2-r17