Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
2022250 | Protein Expression and Purification | 2006 | 9 Pages |
Abstract
The human interferon α2b (hu-IFNα2b) gene was cloned in Escherichia coli JM109(DE3) and the recombinant protein was expressed as cytoplasmic inclusion bodies (IB). The present work discusses the recovery of hu-IFNα2b IB from the E. coli cells. An optimized protocol is proposed based on the sequential evaluation of recovery steps and parameters: (i) cell disruption, (ii) IB recovery and separation from cell debris, (iii) IB washing, and (iv) IB solubilization. Parameters such as hu-IFNα2b purity and recovery yield were measured after each step. The optimized recovery protocol yielded 60% of hu-IFNα2b with a purity of up to 80%. The protein was renatured at high concentration after recovery and it was found to display biological activity.
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Authors
C.A. Valente, G.A. Monteiro, J.M.S. Cabral, M. Fevereiro, D.M.F. Prazeres,