doi: 10.1016/s0167-4838(98)00252-0.
Cold denaturation of ubiquitin
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- PMID: 9989223
- DOI: 10.1016/s0167-4838(98)00252-0
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Cold denaturation of ubiquitin
Biochim Biophys Acta.
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Abstract
Temperature induced unfolding of bovine ubiquitin in solutions with different concentrations of guanidinium hydrochloride (GdmCl) has been measured using differential scanning calorimetry. It has been shown that at high concentrations of GdmCl the ubiquitin molecule can undergo both heat and cold induced denaturation. Analysis of the enthalpy of unfolding of ubiquitin in the presence of GdmCl shows a good agreement with the thermodynamic denaturant binding model. The unfolding Gibbs energy is found to change linearly with guanidine concentration up to zero denaturant concentration.
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