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Differential scanning calorimetry (DSC)

External protocol Created on 30 Apr 2014

Authors

Robert Liddington and Andrey Bobkov

Summary

In DSC experiments thermal unfolding of proteins monitored via changes in the heat capacity. These changes are believed to originate from the disruption of the forces stabilizing native protein structure (such as van der Waals, hydrophobic and electrostatic interactions, hydrogen bonds, etc.) and the hydration of the exposed residues. Therefore, protein denaturation profiles and thermodynamic parameters obtained from DSC experiments, such as calorimetric enthalpy (ΔH) and denaturation temperature (Tm) are sensitive to the structural state of proteins. Presence of the sharp transition(s) in DSC scans indicates that the target protein has a ternary structure and thus, folded. Changes in the protein conformation would affect the position and the shape of the transition(s) in DSC scans.

Further details

The protocol was published on Protocol Exchange on 5 February 2009. To see the entire protocol, click on the source link.

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