IWe examined genomic patterns of nucleosome acetylation using antibodies directed
against three different forms of acetylated histone residues, H3K9ac, H3K14ac
and H4 acetylated at the four positions K5, K8, K12 and K16. Below at left are
enrichment profiles for these modifications at a specific region and at right
are profiles of the average gene for each modification. In general, acetylation
occurs within promoter regions and correlates
with transcriptional activity.