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Carbohydrate recognition systems: functional triads in cell-cell interactions

P R Crocker1, T Feizi

  • 1ICRF Molecular Haemopoiesis Laboratory, John Radcliffe Hospital, University of Oxford, Headington, UK. p_crocker@icrf.icnet.uk

Current Opinion in Structural Biology
|October 1, 1996
PubMed
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Mammalian carbohydrate-binding proteins like selectins are key to immune responses and cell communication. Their interaction with carbohydrate ligands depends on presentation, such as clustering and display on proteins.

Area of Science:

  • Molecular biology
  • Immunology
  • Biochemistry

Background:

  • Mammalian carbohydrate recognition systems are crucial for various biological processes.
  • Selectins, sialoadhesins, and related proteins act as receptors in cell-cell communication.
  • These receptors play roles in immune responses, inflammation, and cell interactions.

Purpose of the Study:

  • To elucidate the molecular mechanisms underlying mammalian carbohydrate recognition.
  • To understand how carbohydrate-binding proteins interact with their oligosaccharide ligands.
  • To investigate the influence of ligand presentation on receptor-ligand binding.

Main Methods:

  • Protein structural studies to determine receptor conformation.
  • Gain-of-function and loss-of-function mutations to assess receptor activity.

Related Experiment Videos

  • Oligosaccharide binding experiments using varied presentation methods (e.g., lipid or protein carriers).

    • Main Results:

    • Progress has been made in understanding the molecular basis of carbohydrate recognition.
    • Receptor-ligand interactions involve specific monosaccharide elements of oligosaccharides.
    • The presentation of oligosaccharide ligands, including clustering and display on carriers, significantly impacts binding affinity and functional complex formation.

    Conclusions:

    • The structure and presentation of carbohydrate ligands are critical for functional receptor-ligand interactions.
    • Understanding these molecular interactions is vital for deciphering immune responses and cell communication.
    • Further research into these systems can inform therapeutic strategies targeting carbohydrate recognition pathways.