Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 10, Issue 8, Pages 3283-3315Publisher
MDPI
DOI: 10.3390/ijms10083283
Keywords
non-specific interactions; isothermal titration calorimetry
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Isothermal titration microcalorimetry (ITC) is mostly used to investigate the thermodynamics of specific host-guest interactions in biology as well as in supramolecular chemistry. The aim of this review is to demonstrate that ITC can also provide useful information about non-specific interactions, like electrostatic or hydrophobic interactions. More attention will be given in the use of ITC to investigate polyelectrolyte-polyelectrolyte ( in particular DNA-polycation), polyelectrolyte-protein as well as protein-lipid interactions. We will emphasize that in most cases these non specific interactions, as their definition will indicate, are favoured or even driven by an increase in the entropy of the system. The origin of this entropy increase will be discussed for some particular systems. We will also show that in many cases entropy-enthalpy compensation phenomena occur.
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