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On-column protein refolding for crystallization
Natalia Oganesyan1, Sung-Hou Kim, Rosalind Kim
1Berkeley Structural Genomics Center, Physical Biosciences Division, Lawrence Berkeley National Laboratory, California 94720, USA.
Journal of Structural and Functional Genomics
|October 8, 2005
Summary
Researchers developed an efficient on-column refolding method for proteins from inclusion bodies in E. coli. This technique combines artificial chaperones and affinity chromatography for faster protein purification and refolding for structural studies.
Area of Science:
- Biochemistry
- Structural Biology
- Protein Engineering
Background:
- Protein production in Escherichia coli often yields insoluble aggregates known as inclusion bodies, hindering structural genomics.
- Efficient refolding of these proteins is crucial for obtaining soluble, native forms for research.
Purpose of the Study:
- To establish an efficient on-column refolding method for proteins from inclusion bodies.
- To integrate refolding with purification for streamlined protein production.
Main Methods:
- Developed an on-column refolding technique at the Berkeley Structural Genomics Center (BSGC).
- Combined artificial chaperone-assisted refolding with affinity chromatography.
- Utilized a chromatographic step for simultaneous refolding and purification.
Main Results:
- The on-column method is time-efficient, eliminating the need for filtration or concentration steps.
- Achieved protein purification concurrently with refolding.
- The method is suitable for automation and high-throughput processing.
Conclusions:
- The on-column refolding method offers a streamlined approach to producing soluble proteins from inclusion bodies.
- This technique enhances efficiency and facilitates high-throughput protein production for structural and functional studies.