Identification of N-linked glycoproteins in human saliva by glycoprotein capture and mass spectrometry.
Article Details
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Ramachandran P, Boontheung P, Xie Y, Sondej M, Wong DT, Loo JA
Identification of N-linked glycoproteins in human saliva by glycoprotein capture and mass spectrometry.
J Proteome Res. 2006 Jun;5(6):1493-503.
- PubMed ID
- 16740002 [ View in PubMed]
- Abstract
Glycoproteins make up a major and important part of the salivary proteome and play a vital role in maintaining the health of the oral cavity. Because changes in the physiological state of a person are reflected as changes in the glycoproteome composition, mapping the salivary glycoproteome will provide insights into various processes in the body. Salivary glycoproteins were identified by the hydrazide coupling and release method. In this approach, glycoproteins were coupled onto a hydrazide resin, the proteins were then digested and formerly N-glycosylated peptides were selectively released with the enzyme PNGase F and analyzed by LC-MS/MS. Employing this method, coupled with in-solution isoelectric focusing separation as an additional means for pre-fractionation, we identified 84 formerly N-glycosylated peptides from 45 unique N-glycoproteins. Of these, 16 glycoproteins have not been reported previously in saliva. In addition, we identified 44 new sites of N-linked glycosylation on the proteins.
DrugBank Data that Cites this Article
- Polypeptides
Name UniProt ID Transcobalamin-1 P20061 Details Serotransferrin P02787 Details Alpha-1-acid glycoprotein 1 P02763 Details Myeloperoxidase P05164 Details Neutrophil gelatinase-associated lipocalin P80188 Details Alpha-amylase 1 P04745 Details Beta-2-glycoprotein 1 P02749 Details Zinc-alpha-2-glycoprotein P25311 Details Carcinoembryonic antigen-related cell adhesion molecule 5 P06731 Details Ig alpha-2 chain C region P01877 Details Complement C4-B P0C0L5 Details Afamin P43652 Details Alpha-2-HS-glycoprotein P02765 Details Clusterin P10909 Details Leucine-rich alpha-2-glycoprotein P02750 Details Immunoglobulin J chain P01591 Details Hemopexin P02790 Details Haptoglobin P00738 Details