Enzymatic methylation and demethylation of protein-bound lysine residues.

Amino Acid Sequence Animals Carbon Radioisotopes Histone-Lysine N-Methyltransferase/isolation & purification,metabolism Kinetics Methylation Neurospora crassa/enzymology Peptide Fragments/analysis Protein Methyltransferases/isolation & purification Radioisotope Dilution Technique S-Adenosylmethionine/metabolism Substrate Specificity

Carbon Radioisotopes Peptide Fragments S-Adenosylmethionine Protein Methyltransferases Histone-Lysine N-Methyltransferase