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Fusion tags to enhance heterologous protein expression

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Abstract

Escherichia coli is the most widely used heterologous protein expression system. However, this system remains a challenge due to the low solubility of proteins, insufficient yield, and inclusion body formation. Numerous approaches have sought to address these issues. The use of a fusion tag is one of the most powerful strategies for obtaining large amounts of heterologous protein in E. coli expression system. Here, recent advances in fusion tags that increase the expression of proteins are reviewed. In addition, proposed concepts for designing peptide tags to increase protein expression are discussed.

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Funding

This work was supported by the Marine Biomaterials Research Center as a grant from the Marine Biotechnology Program, funded by the Ministry of Oceans and Fisheries, South Korea. This work is also supported by the Basic Core Technology Development Program for the Oceans and the Polar Regions of the NRF (NRF-2015M1A5A1037054) and the Research Fellow Funding Grant of NRF (NRF-2018R1A6A3A11040793), and supported by a Korea University Grant for MR Ki.

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Correspondence to Seung Pil Pack.

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The authors declare that they have no conflict of interest.

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Ki, MR., Pack, S.P. Fusion tags to enhance heterologous protein expression. Appl Microbiol Biotechnol 104, 2411–2425 (2020). https://doi.org/10.1007/s00253-020-10402-8

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  • DOI: https://doi.org/10.1007/s00253-020-10402-8

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