<unk>  is an epigenetic modification to the DNA packaging protein Histone H3. It is a mark that indicates the acetylation at the 9th lysine residue of the histone H3 protein. The H3K9 histone has two jobs. Genes get turned on if this mark is acetylated and silences them if methylated.<unk>  is an important acetylation and connected with active promoters.<unk>  and H3K14ac have been shown to be part of the active promoter state. They are also present over bivalent promoters and active enhancers. This is also a mark for liver cancer through a defect in the<unk> /H3K9me3 transition.
H3K9ac
H4K8ac
H3K14ac
H4K12ac
H3K23ac
H4K91ac
H4K5ac
H3K27ac