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Figure 4 | Proteome Science

Figure 4

From: An integrative strategy for quantitative analysis of the N-glycoproteome in complex biological samples

Figure 4

MS and quantitation of a deglycosylated peptide, LAN*LTQGEDQYYLR, from ConA-enriched CLUS [Swiss-Prot: P10909] glycoprotein in human serum. (A) Double-charged peptide labeled with 18O and 16O. The m/z 845.91943 (18O) and 842.91333 (16O) displays a 6 Da mass shift in the monoisotopic peaks; the intensity ratio of the 18O/16O isotope cluster was 1.812. (B) Mass spectrum of the glycopeptide labeled with 18O in m/z 845.91943. (C) Mass spectrum of the glycopeptide labeled with 16O in m/z 842.91333. *denotes the N-glycosylation site.

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Proteome Science

ISSN: 1477-5956