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Structural studies on mannose-selective glycoprotein receptors using molecular modeling techniques.

Madhumita Patra1, Sujata Majumder, Chhabinath Mandal

  • 1Drug Design, Development and Molecular Modelling Division Indian Institute of Chemical Biology, Jadavpur, Kolkata, 700 032, India.

Glycoconjugate Journal
|May 13, 2006
PubMed
Summary

Researchers identified potential mannose-binding glycoprotein receptors across species by analyzing protein structures and binding sites. This study explores their function in cellular events, aiding glycoprotein transport.

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Area of Science:

  • Molecular Biology
  • Structural Biology
  • Biochemistry

Background:

  • Glycoproteins are crucial for cellular functions, requiring proper folding and location.
  • Efficient glycoprotein exit from the endoplasmic reticulum may involve specific sorting receptors.
  • These receptors often depend on metal ions, like calcium, for activity.

Purpose of the Study:

  • To systematically identify potential mannose-mediated glycoprotein receptors in various species.
  • To investigate the structural and functional properties of these candidate receptors.
  • To compare novel candidate receptors with the known mannose-selective lectin p58/ERGIC-53.

Main Methods:

  • Sequence homology searches identified potential candidate genes across species.
  • Knowledge-based homology modeling predicted protein structures.

Related Experiment Videos

  • Molecular docking, energy minimization, and molecular dynamics simulated mannose binding.

    • Main Results:

    • Identified numerous homologous proteins with potential mannose-binding capabilities.
    • Predicted structures revealed potential sugar-binding sites in candidate receptors.
    • Simulations provided insights into the binding interactions of mannose with modeled receptors.

    Conclusions:

    • Several proteins across species show potential as mannose-mediated glycoprotein receptors.
    • Structural and binding analyses suggest conserved mechanisms for glycoprotein sorting.
    • Further studies can elucidate the precise roles of these receptors in cellular transport.