Abstract
The use of an organic solvent-based gel prepared from polyethylene oxide and a polyvinyl alcohol hydrogel for protein crystallization was investigated. The preparation, properties and application of the gels for protein crystallization are described, and the advantages and limitations of the approach are discussed. The gels are compared with agar, which is a popular aqueous gel used for protein crystallization. The growth behaviour and diffraction quality of crystals prepared in these gel media were evaluated for two model soluble proteins, thaumatin and lysozyme, and for two bacterial membrane proteins, TolC and AcrB.
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