derives from O-glycosylated residue modified L-lysine residue monohydroxylated lysine O-glucosyl-L-hydroxylysine 178.0477447509765625 178.1399993896484375 306.1427001953125 306.30999755859375 natural C 12 H 22 N 2 O 7 CARBOHYD O-linked (Glc) hydroxylysine none K modification from RESID (D-glucopyranosyl)oxy-L-lysine O-glucosyl-L-hydroxylysine PSI-MOD MOD:01935 C 6 H 10 O 6