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Streamlined protein expression and purification using cleavable self-aggregating tags
BACKGROUND: Recombinant protein expression and purification remains a fundamental issue for biotechnology. Recently we found that two short self-assembling amphipathic peptides 18A (EWLKAFYEKVLEKLKELF) and ELK16 (LELELKLKLELELKLK) can induce the formation of active protein aggregates in Escherichia...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3124420/ https://www.ncbi.nlm.nih.gov/pubmed/21631955 http://dx.doi.org/10.1186/1475-2859-10-42 |
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author | Xing, Lei Wu, Wei Zhou, Bihong Lin, Zhanglin |
author_facet | Xing, Lei Wu, Wei Zhou, Bihong Lin, Zhanglin |
author_sort | Xing, Lei |
collection | PubMed |
description | BACKGROUND: Recombinant protein expression and purification remains a fundamental issue for biotechnology. Recently we found that two short self-assembling amphipathic peptides 18A (EWLKAFYEKVLEKLKELF) and ELK16 (LELELKLKLELELKLK) can induce the formation of active protein aggregates in Escherichia coli (E. coli), in which the target proteins retain high enzymatic activities. Here we further explore this finding to develop a novel, facile, matrix-free protein expression and purification approach. RESULTS: In this paper, we describe a streamlined protein expression and purification approach by using cleavable self-aggregating tags comprising of one amphipathic peptide (18A or ELK16) and an intein molecule. In such a scheme, a target protein is first expressed as active protein aggregate, separated by simple centrifugation, and then released into solution by intein-mediated cleavage. Three target proteins including lipase A, amadoriase II and β-xylosidase were used to demonstrate the feasibility of this approach. All the target proteins released after cleavage were highly active and pure (over 90% in the case of intein-ELK16 fusions). The yields were in the range of 1.6-10.4 μg/mg wet cell pellet at small laboratory scale, which is comparable with the typical yields from the classical his-tag purification, the IMPACT-CN system (New England Biolabs, Beverly, MA), and the ELP tag purification scheme. CONCLUSIONS: This tested single step purification is capable of producing proteins with high quantity and purity. It can greatly reduce the cost and time, and thus provides application potentials for both industrial scale up and laboratorial usage. |
format | Online Article Text |
id | pubmed-3124420 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-31244202011-06-28 Streamlined protein expression and purification using cleavable self-aggregating tags Xing, Lei Wu, Wei Zhou, Bihong Lin, Zhanglin Microb Cell Fact Research BACKGROUND: Recombinant protein expression and purification remains a fundamental issue for biotechnology. Recently we found that two short self-assembling amphipathic peptides 18A (EWLKAFYEKVLEKLKELF) and ELK16 (LELELKLKLELELKLK) can induce the formation of active protein aggregates in Escherichia coli (E. coli), in which the target proteins retain high enzymatic activities. Here we further explore this finding to develop a novel, facile, matrix-free protein expression and purification approach. RESULTS: In this paper, we describe a streamlined protein expression and purification approach by using cleavable self-aggregating tags comprising of one amphipathic peptide (18A or ELK16) and an intein molecule. In such a scheme, a target protein is first expressed as active protein aggregate, separated by simple centrifugation, and then released into solution by intein-mediated cleavage. Three target proteins including lipase A, amadoriase II and β-xylosidase were used to demonstrate the feasibility of this approach. All the target proteins released after cleavage were highly active and pure (over 90% in the case of intein-ELK16 fusions). The yields were in the range of 1.6-10.4 μg/mg wet cell pellet at small laboratory scale, which is comparable with the typical yields from the classical his-tag purification, the IMPACT-CN system (New England Biolabs, Beverly, MA), and the ELP tag purification scheme. CONCLUSIONS: This tested single step purification is capable of producing proteins with high quantity and purity. It can greatly reduce the cost and time, and thus provides application potentials for both industrial scale up and laboratorial usage. BioMed Central 2011-06-02 /pmc/articles/PMC3124420/ /pubmed/21631955 http://dx.doi.org/10.1186/1475-2859-10-42 Text en Copyright ©2011 Xing et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Xing, Lei Wu, Wei Zhou, Bihong Lin, Zhanglin Streamlined protein expression and purification using cleavable self-aggregating tags |
title | Streamlined protein expression and purification using cleavable self-aggregating tags |
title_full | Streamlined protein expression and purification using cleavable self-aggregating tags |
title_fullStr | Streamlined protein expression and purification using cleavable self-aggregating tags |
title_full_unstemmed | Streamlined protein expression and purification using cleavable self-aggregating tags |
title_short | Streamlined protein expression and purification using cleavable self-aggregating tags |
title_sort | streamlined protein expression and purification using cleavable self-aggregating tags |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3124420/ https://www.ncbi.nlm.nih.gov/pubmed/21631955 http://dx.doi.org/10.1186/1475-2859-10-42 |
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