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Production and Purification of the Human SMC5/6 Core Complex from S. cerevisiae
Hemanta Adhikary1, Damien D'Amours2
1Department of Cellular and Molecular Medicine, Ottawa Institute of System Biology, University of Ottawa, Ottawa, ON, Canada.
Methods in Molecular Biology (Clifton, N.J.)
|October 19, 2025
Summary
Researchers developed a yeast-based method to produce and purify the human SMC5/6 complex, crucial for genome stability. This breakthrough enables further structural and functional studies of this essential enzyme.
Area of Science:
- Molecular Biology
- Biochemistry
- Genetics
Background:
- The human SMC5/6 complex is vital for genome stability and chromatin organization.
- Previous difficulties in recombinant expression and purification hindered its study.
Purpose of the Study:
- To establish a robust method for high-level production and purification of the recombinant human SMC5/6 core complex.
- To enable downstream structural and functional analyses of the complex.
Main Methods:
- Utilized a yeast-based expression system (Saccharomyces cerevisiae).
- Employed a subunit fusion approach with affinity tag/linker removal.
- Incorporated triple-affinity tag purification and size exclusion chromatography.
Main Results:
- Achieved high-level production and purification of the recombinant hSMC5/6 core complex.
- Obtained >95% pure protein with stoichiometric homogeneity.
- Demonstrated the functional activity of the purified recombinant enzyme.
Conclusions:
- The developed yeast-based workflow is scalable and efficient for producing active recombinant hSMC5/6 complex.
- This strategy facilitates crucial structural and functional studies of the human SMC5/6 complex.
- The purification approach is broadly applicable to other challenging multi-subunit protein complexes.
