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Updated: Jun 28, 2026
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Determining Cell-surface Expression and Endocytic Rate of Proteins in Primary Astrocyte Cultures Using Biotinylation
Published on: July 3, 2017
High-throughput biotinylation of proteins.
Brian K Kay1, Sang Thai, Veronica V Volgina
1Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL, USA.
Methods in Molecular Biology (Clifton, N.J.)
|November 7, 2008
Summary
We present three scalable methods for biotinylating proteins, either in vivo in E. coli or in vitro using chemical or enzymatic reactions. These biotinylation techniques enable diverse biochemical experiments, including affinity selection and protein interaction studies.
Area of Science:
- Biochemistry
- Molecular Biology
- Biotechnology
Background:
- Biotinylation is crucial for protein tagging in biochemical experiments due to biotin's high affinity for streptavidin/avidin.
- Existing methods include in vivo and in vitro biotinylation of recombinant or purified proteins.
Purpose of the Study:
- To develop and present three complementary, scalable approaches for protein biotinylation.
- To enable robust protein labeling for various downstream applications.
Main Methods:
- In vivo biotinylation of proteins in Escherichia coli.
- In vitro enzymatic biotinylation of proteins.
- In vitro chemical biotinylation of proteins.
Main Results:
- Successful implementation of three distinct biotinylation strategies.
- Demonstrated scalability of the methods for large-scale protein tagging.
- Generated biotinylated proteins suitable for diverse applications.
Conclusions:
- The presented methods offer versatile and scalable options for protein biotinylation.
- These techniques facilitate advanced biochemical assays, including affinity selection and protein interaction analysis.
- The developed approaches enhance the utility of biotin-tagged proteins in research and diagnostics.
