?
 
Class I histone deacetylases Class I histone deacetylases (HDACs) are Zn-dependent enzymes that catalyze hydrolysis of N(6)-acetyl-lysine residues in histone amino termini to yield a deacetylated histone (EC 3.5.1.98). Enzymes belonging to this group participate in regulation of a number of processes through protein (mostly different histones) modification (deacetylation). Class I histone deacetylases in general act via the formation of large multiprotein complexes. This group includes animal HDAC1, HDAC2, HDAC3, HDAC8, fungal RPD3, HOS1 and HOS2, plant HDA9, protist, archaeal and bacterial (AcuC) deacetylases. Members of this class are involved in cell cycle regulation, DNA damage response, embryonic development, cytokine signaling important for immune response and in posttranslational control of the acetyl coenzyme A synthetase. In mammals, they are known to be involved in progression of various tumors. Specific inhibitors of mammalian histone deacetylases are an emerging class of promising novel anticancer drugs. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",