Figure 2: N-glycopeptides and glycoproteins identified from HepG2 and L02 cells. A) Comparison of N-glycopeptides and glycoproteins isolated from HepG2 celllines and L02 cells; B) comparison of N-glycopeptides and glycoproteins isolated using two different methods. “HA” and “HZ” represent the hydrophilic affinity solidphase extraction method and hydrazide chemistry solid phase extraction method, respectively. C) Motif analysis of identified glycosylation sites.