Journal
MOLECULAR BIOTECHNOLOGY
Volume 19, Issue 3, Pages 251-267Publisher
HUMANA PRESS INC
DOI: 10.1385/MB:19:3:251
Keywords
expression; biotechnology; promoters; transgenic; bioreactor
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The high-level production of functional proteins in E. coli is a very extense field of research in biotechnology. A number of important aspects to be considered in the initial design of an expression system and their interplay, were clear years ago. However, in recent times, strategies that go beyond transcription, translation, stability, vector, and strain choice, have been developed; so now expression of active peptides can be viewed as a more integrated process. Coexpression of protein subunits, foldases and chaperones, protein folding, location and purification schemes, metabolic engineering of the cell's central metabolism, and in vitro refolding strategies, are some of the novelties that are now available to aid in the success of an efficient expression system for active heterologous proteins. This review presents a compilation of the basic issues that influence the success in the production of protein. and nonprotein products in Escherichia coli, as well as some general strategies designed to facilitate downstream process operations and improve biosynthesis yields.
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