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Making the most of affinity tags
1Protein Engineering Section, Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, P.O. Box B, Frederick, MD 21702-1201, USA. waughd@ucifcrf.gov
Trends in Biotechnology
|June 1, 2005
Summary
Affinity tags are crucial for analyzing proteins, enhancing their yield, solubility, and folding. Combinatorial tagging offers a promising approach to maximize the benefits of these essential tools in high-throughput proteomics.
Area of Science:
- Proteomics
- Biochemistry
- Molecular Biology
Background:
- Proteins present challenges for high-throughput analysis due to diverse physiochemical properties.
- Affinity tags are essential tools for structural and functional proteomics.
- Tags aid in detection and purification of recombinant proteins.
Purpose of the Study:
- To highlight the multifaceted roles of affinity tags in protein analysis.
- To discuss the impact of affinity tags on protein yield, solubility, and folding.
- To explore combinatorial tagging as a strategy for high-throughput proteomics.
Main Methods:
- Review of existing literature on affinity tag applications in proteomics.
- Analysis of the strengths and weaknesses of various affinity tags.
- Discussion of the potential of combinatorial tagging strategies.
Main Results:
- Affinity tags significantly improve protein yield, solubility, and folding.
- No single affinity tag is universally optimal for all applications.
- Each tag possesses unique advantages and limitations.
Conclusions:
- Affinity tags are indispensable for modern proteomics.
- Optimizing protein analysis requires careful selection of affinity tags.
- Combinatorial tagging presents a powerful strategy to overcome limitations and harness the full potential of affinity tags in high-throughput settings.