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Motif analysis of the 743 high-confidence p53 ChIP-seq peaks identified in IMR90 cells using MEME. (A) Sequence logo depicting the p53CSI motif (E-value 1.2e−1059). (B) p53CSI motif distribution in the 743 high-confidence peaks. Number of p53CSI motifs found (in 20 bp bins) is plotted vs. the distance (bp) between the motif center and the peak maximum. Strong enrichment of the p53CSI motif is observed within 100 nt centered at the peak maximum.
