The solubility of Hen lysozyme in ethylammonium nitrate / H20 mixtures : a novel approach to protein crystallization
Byrne, Nolene and Angell, C. Austen 2010, The solubility of Hen lysozyme in ethylammonium nitrate / H20 mixtures : a novel approach to protein crystallization, Molecules journal, vol. 15, no. 2, pp. 793-803.
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The solubility of Hen lysozyme in ethylammonium nitrate / H20 mixtures : a novel approach to protein crystallization
We report on the solubility of hen lysozyme (HEWL) in aqueous ethylammonium nitrate (EAN) as a function of water content. We find the solubility behavior to be complex, exhibiting both a maximum (400 mg/mL) at very high EAN content) and a minimum at intermediate EAN content. We exploit this solubility profile in a novel approach to generating crystals of hydrophilic proteins, based on rehydration of a high concentration protein solution. We describe the production of crystals of X-ray diffraction quality. Two related ionic liquid solvent systems, with the same solubility profiles but different effective pH characteristics, are identified for future evaluation.
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eng
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039999 Chemical Sciences not elsewhere classified
Socio Economic Objective
970103 Expanding Knowledge in the Chemical Sciences