Hydrophobic collapse of polymers

Yet another interesting outcome of this recent study was the discovery of an anomalous strong effective attractive interaction between two histidine residues and between two tryptophan residues. This could be ascribed to the interaction mediated by metals, as these are residues that form coordination complexes with metals such as cobalt or iron. 

An elegant example of hydrophobic force is provided by the role of hydrophobicify in the pattern formation of chiral molecules. A study has been done by employing a PMF developed by Ben-Amotz and Herschbach [12] using some of the ideas of Bondi [ 13 ]. It has been pointed out how such an application can explain the stability of a flat interface in a racemic mixture but form a helical pattern in a solution made of pure dextro or levo molecules. 

We have discussed the occurrence of hydrophobic collapse in the folding of proteins. This is a general phenomenon and was treated quite early by Flory in his well-known study of polymer conformations across theta temperatures in polymer solutions. When a polymer chain is dissolved in water or the temperature of the polymer solution is lowered, it often undergoes a transition from extended state to collapsed state. This is reflected in the sharp decrease in the size of the polymer, measured by its radius of gyration. This phenomenon is known as collapse transition. Though the collapse transition is primarily initiated by the change of temperature, it may also be introduced by a change in the quality of the 

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