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Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules
Published on: July 25, 2013
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Biomimetic Entropy-Dominant Molecular Hinges with Picomolar Affinity.
Zehuan Huang1, Alexander S Groombridge1, Guanglu Wu1
1Melville Laboratory for Polymer Synthesis, Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
Journal of the American Chemical Society
|August 21, 2024
Summary
Researchers developed a novel molecular hinge using host-enhanced charge-transfer interactions, achieving picomolar binding affinity. This entropy-driven system mimics natural processes and enhances visible light sensitization.
Area of Science:
- Supramolecular Chemistry
- Molecular Engineering
- Biomimetic Systems
Background:
- Molecular hinges are crucial in natural and artificial systems.
- Achieving high thermodynamic and kinetic stability simultaneously remains a challenge.
Purpose of the Study:
- To design a new molecular hinge with ultrahigh binding affinity and stability.
- To explore entropy-driven complexation for molecular systems.
Main Methods:
- Utilized host-enhanced intramolecular charge-transfer interactions.
- Employed a flexible AB2-type guest and a macrocyclic host for complexation.
- Investigated photoisomerization modulation and light sensitization properties.
Main Results:
- Formed a molecular hinge with picomolar binding affinity (Ka > 10^12 M^-1).
- Demonstrated entropy-favored complexation.
- Observed a preference for the E-isomer in photoisomerization, mirroring the retinal-opsin cycle.
Conclusions:
- Host-enhanced charge-transfer interactions can drive entropy-dominant complexation.
- The developed molecular hinge offers a biomimetic approach for visible light sensitization.
- This strategy enables the design of hierarchical molecular systems.
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