The organization of DNA into chromatin plays a major role in gene regulation. Changes in chromatin architecture (chromatin remodeling) can be modulated by acetylation, methylation, phosphorylation, and ubiquitination of N-terminal histone tails.[1] Histone acetylation is the best-understood mechanism of chromatin remodeling, and is essentially governed by the antagonistic activity of histone acetyltransferases (HATs) and histone ...