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Updated: Dec 12, 2025
High-throughput Purification of Affinity-tagged Recombinant Proteins
Published on: August 26, 2012
Detailed protocol for optimised expression and purification of functional monomeric human Heat Shock Factor 1
Joseph Polidano1, Naveen Vankadari2, John T Price3
1Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia; Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Victoria, 3800, Australia; Australian Institute for Musculoskeletal Science (AIMSS), The University of Melbourne and Western Health, St. Albans, VIC, Australia.
This study details a new protocol for producing monomeric human Heat Shock Factor 1 (HSF1) in vitro. The method also refines HSF1 activation, offering a more accurate mimic of in vivo conditions for proteotoxic stress research.
Area of Science:
- Molecular Biology
- Cellular Stress Response
Background:
- Heat Shock Factor 1 (HSF1) regulates the heat shock response to proteotoxic stress.
- HSF1 activity is modulated by post-translational modifications and temperature, leading to trimerization and DNA binding in vivo.
- Recombinant HSF1 production is challenging due to its sensitivity to elevated temperatures in vitro, causing trimerization and degradation.
Purpose of the Study:
- To present a detailed experimental protocol for the expression and purification of monomeric human HSF1 (HsHSF1).
- To propose an improved in vitro method for inducing HsHSF1 activation that better reflects physiological conditions.
Main Methods:
- Development of a specific protocol for recombinant expression and purification of HsHSF1.
- Refinement of in vitro methods to induce HsHSF1 activation.
Main Results:
- Successful expression and purification of monomeric HsHSF1 as the predominant species.
- A refined in vitro activation method that more accurately mimics in vivo HsHSF1 behavior.
Conclusions:
- The reported protocol facilitates the production of monomeric HsHSF1 for research.
- The refined activation method enhances the physiological relevance of in vitro studies on HSF1 function and the heat shock response.
