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Modulating the physicochemical and structural properties of gold-functionalized protein nanotubes through thiol
Liliana Carreño-Fuentes1, Germán Plascencia-Villa, Laura A Palomares
1Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México , Ave. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos 62210, México.
Langmuir : the ACS Journal of Surfaces and Colloids
|November 20, 2014
Summary
Researchers created stable, soluble gold nanoparticles on rotavirus VP6 nanotubes using thiol protection. This strategy allows control over nanoparticle size and properties for advanced nanobiomaterial applications.
Area of Science:
- Nanotechnology
- Biomaterials Science
- Protein Engineering
Background:
- Biomolecules serve as scaffolds for metallic nanoparticle synthesis.
- Rotavirus VP6 nanotubes bind metal ions, enabling gold nanoparticle synthesis.
- Existing nanobiomaterials lack colloidal stability, limiting applications.
Purpose of the Study:
- To develop stable, soluble nanobiomaterials using thiol-protected gold nanoparticles on VP6 nanotubes.
- To modulate nanoparticle size, colloidal stability, and surface plasmon resonance.
- To achieve high spatial and structural organization in hybrid nanostructures.
Main Methods:
- Synthesis of thiol-protected gold nanoparticles on rotavirus VP6 nanotubes.
- Utilizing water-soluble ligands: sodium 3-mercapto-1-propanesulfonate (MPS) and 5-mercaptopentyl β-D-glucopyranoside (GlcC5SH).
- Characterization of nanobiomaterial properties including size, stability (Z-potential), and surface plasmon resonance.
Main Results:
- Achieved soluble and colloidally stable nanobiomaterials.
- Demonstrated control over nanoparticle size and surface plasmon resonance via ligand content.
- VP6 nanotube-based nanobiomaterials exhibited enhanced stability in suspension.
Conclusions:
- A rational strategy for in situ synthesis of modulated metal nanoparticles on protein bioscaffolds was developed.
- Thiol coating of gold nanoparticles on VP6 nanotubes yields stable, tunable nanobiomaterials.
- This approach enables the creation of highly organized, integrative hybrid nanostructures for novel applications.
