秒速飞艇开奖软件

Histone deacetylases (HDACs), also known as lysine deacetylases (KDACs), are a class of enzymes that remove acetyl groups from core histones (H2A, H2B, H3 and H4), thereby regulating gene expression. These epigenetic enzymes influence the structure of chromatin, the protein-DNA complex that forms into chromosomes residing in the nucleus. By removing an acetyl group, HDACs enable the tightening of the chromatin structure i...