Name a method for enrichment of arginine-methylated peptides.
['To better study protein methylation, we have developed highly specific antibodies against monomethyl arginine; asymmetric dimethyl arginine; and monomethyl, dimethyl, and trimethyl lysine motifs. These antibodies were used to perform immunoaffinity purification of methyl peptides followed by LC-MS/MS analysis to identify and quantify arginine and lysine methylation sites in several model studies. ']
['Immunoaffinity purification using specific antibodies has been used in order to perform enrichment of methylated peptides.']
['Immunoaffinity purification']