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Separation technologies for glycomics.

Jun Hirabayashi1, Ken-ichi Kasai

  • 1Department of Biological Chemistry, Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa 199-0195, Japan. j-hira@pharm.teikyo-u.ac.jp

Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
|May 23, 2002
PubMed
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Understanding gene function requires studying protein glycosylation, a key post-translational modification. This research outlines a glycomic strategy to identify glycoproteins, their modification sites, glycan structures, and functional effects.

Area of Science:

  • Glycomics and Proteomics
  • Molecular Biology and Genetics
  • Post-Translational Modifications

Background:

  • Genome projects have identified many genes, but their functions, especially post-translational modifications like protein glycosylation, remain largely unknown.
  • Glycoproteins play crucial roles in cell recognition, making their study essential for understanding multicellular organism biology.
  • A systematic approach to analyze the 'glycome' (the complete set of glycans in an organism) is needed.

Purpose of the Study:

  • To propose a glycomic strategy for analyzing glycoproteins and their functions.
  • To identify genes encoding glycoproteins, their glycosylation sites, glycan structures, and functional impacts.
  • To establish a core strategy for comprehensive glycomic analysis.

Main Methods:

Related Experiment Videos

  • The 'glyco-catch method' for identifying genes encoding glycoproteins and glycosylation sites, combining lectin-affinity chromatography and in silico database searching.
  • Reinforced frontal affinity chromatography for analyzing glycan structures and determining lectin affinity constants (K(a)-values).
  • Mass spectrometry for glycan mass information and 2-D/3-D mapping for refined chemical information, using pyridylaminated glycans.

Main Results:

  • Systematic identification of glycoprotein-encoding genes and glycosylation sites.
  • Characterization of glycan structures and their affinities to lectins.
  • Development of a comprehensive glycomic strategy applicable to model organisms like *Caenorhabditis elegans*.

Conclusions:

  • The proposed glycomic strategy provides a framework for systematically analyzing glycoproteins.
  • This approach is crucial for elucidating the in vivo functions of eukaryotic genes.
  • The study highlights the importance of integrating genomic, proteomic, and glycomic data for a complete biological understanding.