REFOLDING OF LYSOZYME ASSISTED BY MOLECULAR CHAPERONES IMMOBILIZED IN CELLULOSE: THE OPERATIONAL CONDITIONS THAT AFFECT REFOLDING YIELDS
Expression of recombinant proteins in Escherichia coli often leads to formation of inclusion bodies (IBs). To recover the protein activity, the IBs are isolated, solubilized and refolded. The protein refolding processes play a major role in the production of recombinant proteins; thus, various metho...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | México |
| Institución: | Universidad Autónoma del Estado de Morelos |
| Repositorio: | Redalyc-UAEM |
| OAI Identifier: | oai:redalyc.org:62031166007 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=62031166007 |
| Access Level: | acceso abierto |
| Palabra clave: | Ingeniería lysozyme cellulose inclusion bodies Protein refolding chaperone immobilization |
| Sumario: | Expression of recombinant proteins in Escherichia coli often leads to formation of inclusion bodies (IBs). To recover the protein activity, the IBs are isolated, solubilized and refolded. The protein refolding processes play a major role in the production of recombinant proteins; thus, various methodologies have been implemented, including dilution, dialysis and column chromatography with or without the assistance of molecular chaperones. Recently, it was demonstrated that the apical domain of GroEL (AD), DsbA and DsbC immobilized on cellulose improved the eciency of chromatographic refolding of rhodanese and lysozyme. Although immobilized chaperones and foldases greatly improve refolding yields, their use has been limited. To improve their potential use at the bioprocess scale, it is essential to understand the e ects of operational conditions and additives on refolding yields. Therefore, we investigated the lysozyme refolding kinetics assisted by the apical domain of GroEL (AD), DsbA and DsbC in either soluble or immobilized on cellulose with di erent lysozyme concentrations, di erent chaperone:lysozyme ratios, absence of redox pairing, presence of glycerol and presence of high concentrations of GdnHCl and - mercaptoethanol (-ME). Our results provide insight to improve the use of molecular chaperones in the refolding of recombinant proteins expressed as inclusion bodies. |
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