The methylation and demethylation of protein lysine residues.
D011495:Histone-Lysine N-Methyltransferase / Q000302:isolation & purification / Q000378:metabolism*; D006657:Histones / Q000378:metabolism; D008239:Lysine / Q000378:metabolism*; D008722:Methods; D008745:Methylation; D010089:Oxidoreductases, N-Demethylating / Q000302:isolation & purification / Q000378:metabolism*; D011496:Protein Methyltransferases / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism
D006657:Histones; D011506:Proteins; D010089:Oxidoreductases, N-Demethylating; D011496:Protein Methyltransferases; D011495:Histone-Lysine N-Methyltransferase; D008239:Lysine