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Characterizing Individual Protein Aggregates by Infrared Nanospectroscopy and Atomic Force Microscopy
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Characterization of Hepatitis C Virus Core Protein Dimerization by Atomic Force Microscopy.
Wenhui Li1,2, Xiaolong Kou1,2, Jiachao Xu1,2
1Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China.
Analytical Chemistry
|March 7, 2018
Summary
Hepatitis C virus (HCV) core protein dimerization is key for nucleocapsid formation. A new atomic force microscopy method successfully characterized this dimerization, aiding the development of novel anti-HCV drugs.
Area of Science:
- Biophysics
- Virology
- Molecular Biology
Background:
- Hepatitis C virus (HCV) core protein dimerization is essential for viral nucleocapsid assembly.
- Inhibiting core protein dimerization presents a promising strategy for developing new anti-HCV therapeutics.
Purpose of the Study:
- To develop and validate an atomic force microscopy-based single molecular force spectroscopy (AFM-SMFS) method for characterizing HCV core protein dimerization.
- To investigate the stoichiometry and binding properties of HCV core protein monomers and dimers.
Main Methods:
- Utilized atomic force microscopy-based single molecular force spectroscopy (AFM-SMFS) for label-free analysis.
- Analyzed interaction forces between core protein and specific antibodies or aptamers.
Main Results:
- Successfully detected distinct binding forces corresponding to dimeric and monomeric HCV core protein.
- Demonstrated that the binding properties of the protein dimer differ from those of the monomer.
- Validated AFM-SMFS as a sensitive technique for studying protein-protein interactions.
Conclusions:
- AFM-SMFS provides a novel, efficient approach for studying HCV core protein dimerization.
- This method can be applied to characterize other protein dimerization processes and screen for potential HCV inhibitors.
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