O-D-glucuronosyl-L-serine (2S)-2-amino-3-(beta-D-glucopyranuronosyl)propanoic acid 176.0320892333984375 176.1199951171875 263.064117431640625 263.20001220703125 A protein modification that effectively converts an L-serine residue to O-D-glucuronosyl-L-serine. C 6 H 8 N 0 O 6 C 9 H 13 N 1 O 8 CARBOHYD O-linked (GlcA) serine Glucuronyl MOD:00296 N-glucuronylation O-D-glucuronosyl-L-serine O3-D-glucuronosyl-L-serine PSI-MOD S Unimod:54 natural uniprot.ptm:PTM-0577 N-glucuronylated residue modified L-serine residue