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Related Experiment Video

Updated: Sep 14, 2025

Glycan Node Analysis: A Bottom-up Approach to Glycomics
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Deciphering Glycan Dynamics through Nonlinear Correlation Analysis.

Koichi Kato1,2,3,4, Tokio Watanabe4, Takumi Yamaguchi1,3,4,5

  • 1Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi 444-8787, Japan.

Chemical & Pharmaceutical Bulletin
|July 24, 2025
PubMed
Summary

This study uses molecular dynamics simulations and NMR to reveal how glycan structure impacts biological roles. Understanding glycan dynamics is key for glycoengineering and drug discovery.

Keywords:
conformational dynamicsglycanintramolecular hydrogen bondmolecular simulationnonlinear correlation analysis

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Area of Science:

  • Carbohydrate Chemistry
  • Structural Biology
  • Computational Biology

Background:

  • Glycans are crucial biomolecules involved in numerous biological processes.
  • Structural analysis of glycans is challenging due to their flexibility and complex structures.

Purpose of the Study:

  • To investigate the dynamic conformational ensembles of glycans.
  • To elucidate the roles of glycosidic dihedral angles and hydrogen bonds in glycan structure.
  • To understand how glycan structure influences biological functions.

Main Methods:

  • Molecular dynamics (MD) simulations
  • NMR spectroscopy
  • Nonlinear correlation analyses (Hilbert-Schmidt independence criterion, maximal information coefficient)

Main Results:

  • Identified key correlations between glycosidic linkages and hydrogen bonds in stabilizing glycan conformations.
  • Demonstrated how removing mannose residues alters hydrogen bond networks and expands conformational space.
  • Linked glycan structural dynamics to glycoprotein fate in the endoplasmic reticulum.

Conclusions:

  • A robust framework for understanding glycan structural dynamics was established by integrating MD, NMR, and advanced statistical analysis.
  • Findings provide insights into glycan bioactivity and have implications for glycoengineering and drug discovery.
  • The study highlights the importance of glycan structural dynamics in therapeutic design for dynamic biomolecules.