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  • Title: Enhanced expression of the yeast Ure2 protein in Escherichia coli: the effect of synonymous codon substitutions at a selected place in the gene.
    Author: Komar AA, Guillemet E, Reiss C, Cullin C.
    Journal: Biol Chem; 1998 Oct; 379(10):1295-300. PubMed ID: 9820592.
    Abstract:
    The expression of the yeast Ure2 protein and its two N- and C-terminal HA-(YPYPVDYA) epitope and His-tag fusions has been enhanced in E. coli by selected silent mutagenesis of the URE2 gene. The two Arg-AGA codons at positions 253 and 254 of the URE2 gene coding sequence were exchanged by CGT codons accordingly. This has allowed an increased yield (up to 100-fold) of the full-length protein synthesized. Western blotting with HA-epitope-specific antibodies using N- and C-terminal Ure2p-HA(epitope)-His-tag fusion constructs confirmed the integrity of the recombinant proteins. The N-(C-) terminal tagged proteins were shown to possess biological activity of the natural Ure2 protein.
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