N-linked glycoprotein analysis using dual-extraction ultrahigh-performance liquid chromatography and electrospray tandem mass spectrometry

Methods Mol Biol. 2010;600:133-43. doi: 10.1007/978-1-60761-454-8_9.


Although reverse-phase liquid chromatography (RP-LC) is a common technique for peptide separation in shotgun proteomics and glycoproteomics, it often provides unsatisfactory results for the analysis of glycopeptides and glycans. This bias against glycopeptides makes it difficult to study glycoproteins. By coupling mass spectrometry (MS) with a combination of RP-LC and normal-phase (NP)-LC as an integrated front-end separation system, we demonstrate that effective identification and characterization of both peptides and glycopeptides mixtures, and their constituent glycan structures, can be achieved from a single sample injection event.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cattle
  • Chromatography, High Pressure Liquid / methods*
  • Glycopeptides / chemistry
  • Glycoproteins / chemistry*
  • Horseradish Peroxidase / chemistry
  • Mass Spectrometry / methods
  • Polysaccharides / chemistry
  • Proteome
  • Proteomics / methods
  • Ribonucleases / chemistry
  • Serum Albumin / chemistry
  • Solvents / chemistry
  • Spectrometry, Mass, Electrospray Ionization / methods*
  • Trypsin / chemistry


  • Glycopeptides
  • Glycoproteins
  • Polysaccharides
  • Proteome
  • Serum Albumin
  • Solvents
  • Horseradish Peroxidase
  • Ribonucleases
  • ribonuclease B
  • Trypsin