Abstract
An optimized procedure was developed for production of the extracellular domain encoding amino acids 1–243 of the human type I interferon receptor 2c subunit (IFNAR-2c) as a fusion protein with glutathione S-transferase (GST-IFNAR2cEC) in E. coli to obtain active, soluble protein. Induction of protein expression at 37 °C resulted in a formation of inclusion body. Co-expression with bacterial chaperones, GroEL and GroES, failed to support the folding of GST-IFNAR2cEc under IPTG induction at 37 °C. Expression induced at 25 °C decreased the inclusion body formation up to 62% and cell disruption by a French press provided higher recovery of the recombinant protein than cell disruption by sonication.
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