Lysine methylation of histones, transcriptionally active chromatin, silent chromatin, Histone methyltransferases and demethylases, H3K36me3, 'Lys-9', 'Lys-36', histone H3, histone gene repression, trimethylation-specific demethylase, Myog gene, muscle cell development, HDAC1, HDAC2, HCAC3, ubiquitination, proteasome degradation