Expression of human fibroblast interferon gene in Escherichia coli

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Abstract
The human fibroblast Interferon gene was inserted in a thermoinducible expression plasmid under control of the phage lambda PL promotor. The primary translation products predicted on the basis of the plasmid constructions were hybrid proteins starting with β-lactamase or phage MS2 polymerase information followed by the total preinterferon. On induction, antiviral activity, whose physico-chemical, immunological and biological characteristics closely corresponded to those of authentic human fibroblast Interferon, was synthesized. Processing to a size compatible with mature but unglycosylated authentic product was observed.