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Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
Published on: January 3, 2018
Allosteric effects in coiled-coil proteins folding and lanthanide-ion binding
Manickasundaram Samiappan1, Samaa Alasibi, Rivka Cohen-Luria
1Department of Chemistry, Ben Gurion University of the Negev, Beer Sheva 84105, Israel.
Chemical Communications (Cambridge, England)
|August 24, 2012
Summary
Researchers synthesized lanthanide-chelating peptides, forming stable trimer coiled coil structures. This folding enhances lanthanide coordination and stabilizes the 3D structure of the peptide conjugates.
Area of Science:
- Coordination Chemistry
- Bioconjugation Chemistry
- Supramolecular Chemistry
Background:
- Peptide modifications are crucial for developing novel functional materials.
- Lanthanide complexes offer unique luminescent and magnetic properties.
- Controlling the 3D structure of peptide conjugates is key to their function.
Purpose of the Study:
- To synthesize and characterize novel peptide-lanthanide complexes.
- To investigate the role of peptide folding in lanthanide coordination.
- To explore the structural stabilization induced by lanthanide binding.
Main Methods:
- Synthesis of N-terminally and lysine-side-chain-modified peptides.
- Incorporation of lanthanide(III) ions (Ln(III)).
- Characterization of the resulting peptide-lanthanide complexes using spectroscopic and structural techniques.
Main Results:
- Successful synthesis of peptide conjugates with lanthanide-chelating groups.
- Demonstration that partial folding into trimer coiled coil structures is induced.
- Observation that lanthanide coordination to the ligand further stabilizes the 3D structure.
Conclusions:
- Peptide folding is a key factor in achieving efficient lanthanide coordination.
- The developed peptide-lanthanide conjugates exhibit enhanced structural stability.
- This work provides a pathway for designing self-assembling peptide-based lanthanide materials.
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