Related Experiment Videos
Genetic engineering of streptavidin, a versatile affinity tag
1Center for Advanced Biotechnology and Department of Biomedical Engineering, Boston University, MA 02215, USA.
Journal of Chromatography. B, Biomedical Sciences and Applications
|October 29, 1998
Summary
Genetic engineering enhances streptavidin, a versatile protein tag. Modified variants, including dimeric and fusion proteins, offer expanded applications in biological science by altering biotin-binding affinity.
Area of Science:
- Biochemistry
- Molecular Biology
- Protein Engineering
Background:
- Streptavidin, a tetrameric protein from Streptomyces avidinii, is a widely used affinity tag.
- Its utility stems from high binding affinity for biotin, a vitamin.
- Genetic engineering offers a route to modify streptavidin's properties.
Purpose of the Study:
- To review genetically engineered streptavidin variants.
- To explore enhanced properties and expanded applications of modified streptavidin.
Main Methods:
- Genetic engineering techniques were employed.
- Development of streptavidin variants with altered biotin-binding affinity.
- Creation of dimeric streptavidin and fusion proteins.
Main Results:
- Several genetically engineered streptavidin variants were produced.
- Variants include those with reduced biotin-binding affinity.
- Dimeric streptavidin and streptavidin-Protein A fusion proteins were created.
Conclusions:
- Genetically engineered streptavidin variants offer diverse functionalities.
- Modified streptavidin expands its utility as an affinity tag in biological science.
- These engineered proteins hold potential for various biotechnological applications.