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Updated: Jul 11, 2026
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Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro
Published on: April 8, 2020
Self-assembly of beta-casein and lysozyme
Xiaoyun Pan1, Shaoyong Yu, Ping Yao
1The Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
Journal of Colloid and Interface Science
|October 5, 2007
Summary
Researchers studied protein self-assembly, creating stable nanoparticles from beta-casein and lysozyme. Heating these protein mixtures formed unique nanoparticles with controllable sizes and amphoteric properties.
Area of Science:
- Biochemistry
- Materials Science
- Nanotechnology
Background:
- Proteins like beta-casein and lysozyme can self-assemble into complex structures.
- Understanding protein interactions is key to developing novel nanomaterials.
Purpose of the Study:
- To investigate the self-assembly of beta-casein and lysozyme into nanoparticles.
- To characterize the properties and formation of these protein-based nanoparticles.
Main Methods:
- Mixing beta-casein and lysozyme aqueous solutions to form complex micelles.
- Heating the micelle solution to induce gelation and nanoparticle formation.
- Characterization using laser light scattering, zeta-potential, fluorescence, AFM, and TEM.
Main Results:
- Formation of polydisperse electrostatic complex micelles, followed by narrowly dispersed nanoparticles upon heating.
- Spherical nanoparticles with sizes dependent on pH and protein molar ratio.
- Nanoparticles exhibit amphoteric properties and relative hydrophobicity at specific pH values.
- Surface charges stabilize the nanoparticles in solution.
Conclusions:
- Controlled self-assembly of beta-casein and lysozyme yields stable, spherical nanoparticles.
- Nanoparticle properties can be tuned by adjusting pH and protein ratios.
- These protein-based nanoparticles have potential applications in various fields due to their tunable characteristics.
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