Journal
BIOTECHNOLOGY ADVANCES
Volume 30, Issue 5, Pages 1102-1107Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biotechadv.2011.09.013
Keywords
Recombinant protein production; Bacterial expression system; E. coli; Lactoccocus lactis; Pseudomonas expression system; Streptomyces expression system
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Funding
- NSF
- Georgia Research Alliance
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Escherichia coli expression system continues to dominate the bacterial expression systems and remain to be the preferred system for laboratory investigations and initial development in commercial activities or as a useful benchmark for comparison among various expression platforms. Some new developments in overcoming its shortcomings are reviewed in this paper, including antibiotics-free selection plasmids, extracellular production, and posttranslational modifications. The ability for E. coli to make mg glycosylated proteins promises even broader applications of the E. coli system in the future. Significant progresses have also been made over the past few years in alternative bacterial expression systems. Notably, the Lactoccocus lactis system has proven to be a viable choice for membrane proteins. Additionally, several Pseudomonas systems were developed and achieved product titers comparable to E. coli systems. Other bacterial systems such as Streptomyces, coryneform bacteria, and halophilic bacteria offer advantages in some niche areas, providing more choices of bacterial expression systems for recalcitrant proteins. (C) 2011 Elsevier Inc. All rights reserved.
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