For example, the thermogram shown in Fig. 2.16 indicates that the
protein ubiquitin undergoes an endothermic conformational change in which a large
number of non-covalent interactions (such as hydrogen bonds) are broken simultaneously
and result in denaturation, the loss of the protein’s three-dimensional structure.
The area under the curve represents the heat absorbed in this process and can be
identified with the enthalpy change