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Dissecting the Conformational Stability of a Glycan Hairpin
Nishu Yadav1,2, Surusch Djalali1,2, Ana Poveda3
1Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14476, Germany.
Journal of the American Chemical Society
|February 20, 2024
Summary
Researchers studied synthetic glycans to understand carbohydrate folding. They found that stereoelectronic effects and glycan interactions stabilize folded structures, offering insights for designing new materials.
Area of Science:
- Carbohydrate Chemistry
- Glycobiology
- Supramolecular Chemistry
Background:
- Oligopeptide studies inform protein folding principles.
- Synthetic oligosaccharide models are crucial for understanding glycan folding rules.
- Challenges in synthetic and analytical complexity often limit glycan studies.
Purpose of the Study:
- Investigate factors stabilizing glycan conformational stability in aqueous solution.
- Utilize a self-folding glycan hairpin as a model system.
- Explore design principles for novel glycan architectures.
Main Methods:
- Modular glycan hairpin model with a trisaccharide turn and β-1,4-oligoglucoside strands.
- Systematic chemical modifications, including NMR labeling and staple introduction.
- Nuclear magnetic resonance (NMR) spectroscopy combined with molecular dynamics (MD) simulations.
Main Results:
- Stereoelectronic effects and glycan-glycan interactions are key determinants of folding stability.
- Chemical modifications can fine-tune the rigidity of distant structural motifs.
- Demonstrated the utility of glycan hairpin models for studying folding.
Conclusions:
- Glycan folding stability is governed by specific stereoelectronic and intermolecular interactions.
- Modular glycan design allows for precise control over structural properties.
- Findings provide a foundation for designing advanced glycan-based materials and understanding glycobiology.
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