N4-glycosyl-L-asparagine Hex3 N4-glycosylated asparagine 486.158477783203125 486.420013427734375 600.201416015625 600.52001953125 natural Hex3 C 18 H 30 O 15 C 22 H 36 N 2 O 17 N none modification from Unimod N-linked glycosylation, Hex3 PSI-MOD Hex(3) MOD:00512 complex glycosylation