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January 16, 2011

Five steps involved in the Expression and Purification of Proteins in E. coli

Production and detailed characterization of a variety of proteins is facilitated by their heterologous expression and purification. Recent advances in genomics have led to a massive increase in the number of proteins being produced using recombinant DNA technology. 

            
            In order to express heterologous proteins, a variety of expression systems have been developed. For example, bacteria (e.g. Escherichia coli, Bacillus subtilis, etc), yeasts (e.g. Saccharomyces cerevisiae, Pichia pastoris, Yarrowia lipolytica, etc), filamentous fungi (e.g. Aspergillus nidulance, Trichoderma reesei, etc), insects, plant cell cultures and mammalian cell lines. 

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