Histone H4 undergoes many modifications including acetylation, methylation, and phosphorylation that are important for regulation of gene transcription.1 Histone H4 peptide can be used as a target substrate for several of the histone modifying enzymes including lysine methyltransferases, arginine methyltransferases, acetyltransferases, and others.WARNING This product is not for human or veterinary use.