derives from N6-methyl-L-lysine 2x(2)H monomethylated L-lysine 144.1231689453125 144.2100067138671875 16.028203964233398438 16.04000091552734375 A protein modification that effectively converts an L-lysine residue to 2x(2)H labeled monomethylated L-lysine. PSI-MOD MOD:00604 artifact Methyl:2H(2) none Deuterium Methylation of Lysine K C 7 H 12 (2)H 2 N 2 O 1 C 1 (2)H 2 (2)H deuterium labeled residue modified L-lysine residue