Distribution of H3K9ac over genes.

<p>A. H3K9ac distribution is enriched at transcriptional start sites (TSS) of non-TE related genes. Compared to wild type (MH63), OsSRT1 RNAi enhanced the enrichment of H3K9ac at TSS of marked genes. B. C. The TSS enrichment of H3K9ac is detected over genes larger than 1.5 kb. A 3′ end peak of H3K9ac is indicated by arrows. D. Genes with the 3′ peak of H3K9ac show higher expression levels than the average of total expressed genes. <i>Y</i> axis in A–C: tag density. The upstream, gene body and downstream regions were divided each into 20 intervals. Tag density = tag number divided by the length of the intervals. <i>y</i> axis in D: microarray signals (log2).