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  • Title: Endeavour to simplify the frustrated concept of protein-ammonium family ionic liquid interactions.
    Author: Jha I, Venkatesu P.
    Journal: Phys Chem Chem Phys; 2015 Aug 28; 17(32):20466-84. PubMed ID: 26154862.
    Abstract:
    The large amount of attention earned by ionic liquids (ILs) in the various physical and chemical sciences has been attributed to their unique, designer nature. In the past few years, the role of ILs in protein folding/unfolding has been rapidly growing. In light of the increasing importance of ILs, it is desirable to systematize the ion effects on protein properties such as structure stability, activity and enantioselectivity. Various studies available in the literature show ILs as a potential solvent medium for many enzymatic reactions, as well as in various protein folding/unfolding studies. Various reviews by many researchers focus on the synthesis, application and general properties of the ILs, however a review focussing on the effect of various ILs on the activity, structure and stability of proteins is still missing. Also, according to the best of our knowledge there is no single review available throughout the literature that focuses on the effect of the same family of ILs on different proteins. Therefore, it is a priority to obtain complete knowledge of the biomolecules, particularly amino acids (AAs) and proteins in a particular IL family. The focus of the present perspective is to investigate the performance of a list of proteins and protein model compounds in the presence of ammonium-based ILs. This perspective presents a survey of all the key developments from the available reports and also our past and present experience related to proteins and ammonium-based ILs. Additionally, we have tried to put the available information in chronological order in most of the cases. The use of ammonium family ILs as a co-solvent for various proteins model compounds and proteins has been outlined. This perspective can act as a barometer for reckoning the various advancements made in this field and can also galvanize further investigation of various untouched aspects of this research area.
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