Folding control of a non-natural glycopeptide using saccharide-coded structural information for polypeptides

Area of Science:

• Supramolecular Chemistry
• Organic Chemistry
• Biochemistry

Background:

• Peptide folding is crucial for biological function.
• Designing synthetic peptides with predictable structures is a key challenge.
• Glycosylation offers a route to modulate peptide conformation.

Purpose of the Study:

• To synthesize novel glyco-arylopeptides.
• To investigate the impact of saccharide moieties on peptide folding.
• To establish structure-property relationships in glycosylated peptides.

Main Methods:

• Synthesis of glyco-arylopeptides with varying saccharide side chains.
• Analysis of secondary structures using spectroscopic techniques.
• Determination of helical architectures through structural analysis.

Main Results:

• Glyco-arylopeptides display distinct folding patterns.
• Saccharide side chain length and stereochemistry influence helical formation.
• Specific hydrogen bonding interactions stabilize (P)-3₁- and (M)-4₁-helical structures.

Conclusions:

• Saccharide conjugation is an effective strategy for controlling peptide secondary structures.
• The precise arrangement of saccharides dictates the formation of defined helical architectures.
• These findings open avenues for designing novel functional peptide-based materials.