mono-N-acetylaminogalactosylated residue O4'-(N-acetylamino)galactosyl-L-tyrosine 203.079376220703125 203.19000244140625 366.1427001953125 366.3699951171875 (2S)-2-amino-3-(D-2-acetamido-2-deoxygalactopyranosyloxy)phenylpropanoic acid O4'-glycosyl-L-tyrosine none MOD:01916 Y PSI-MOD natural C 8 H 13 N 1 O 5 C 17 H 22 N 2 O 7 O4'-(N-acetylgalactosaminyl)tyrosine CARBOHYD O-linked (GalNAc) tyrosine mucin type O-glycosyltyrosine O4'-(N-acetylamino)galactosyl-L-tyrosine A protein modification that effectively converts an L-tyrosine residue to O4'-(N-acetylamino)galactosyl-L-tyrosine. O-glycosyl-L-tyrosine