symmetric dimethyl-L-arginine (2S)-2-amino-5-[((methylamino)(methylimino)methyl)amino]pentanoic acid 184.132415771484375 184.2400054931640625 28.031299591064453125 28.049999237060546875 A protein modification that effectively converts an L-arginine residue to symmetric dimethylarginine, N(omega),N'(omega)-dimethyl-L-arginine. C 2 H 4 N 0 O 0 C 8 H 16 N 4 O 1 Dimethyl MOD:00076 MOD_RES Omega-N-methylated arginine MOD_RES Symmetric dimethylarginine N3,N4-dimethylarginine N5-[(methylamino)(methylimino)methyl]ornithine NG,N'G-dimethylarginine NoNo'Me2Arg PSI-MOD R Unimod:36 di-Methylation natural omega-N,omega-N'-dimethyl-L-arginine omega-N,omega-N'-dimethylated L-arginine symmetric dimethylarginine uniprot.ptm:PTM-0287 N-methylated residue dimethylated L-arginine