4-hydroxy-L-arginine (2S,4Xi)-2-amino-5-[(diaminomethylidene)amino]-4-hydroxypentanoic acid 15.994915008544921875 16.0 172.0960235595703125 172.19000244140625 2-amino-5-(carbamimidamido)-4-hydroxypentanoic acid [tautomer] 2-amino-5-[(aminoiminomethyl)amino]-4-hydroxypentanoic acid [tautomer] 2-amino-5-guanidino-4-hydroxypentanoic acid 4-hydroxy-L-arginine 4-hydroxylated L-arginine 4HyArg A protein modification that effectively converts an L-arginine residue to a 4-hydroxy-L-arginine. C 0 H 0 N 0 O 1 C 6 H 12 N 4 O 2 C(gamma)-hydroxyarginine MOD:00220 MOD_RES 4-hydroxyarginine PSI-MOD R gamma-hydroxyarginine natural uniprot.ptm:PTM-0042 monohydroxylated residue hydroxylated arginine