Cited by 260Protein purification and stabilityRedox biology and oxidative stressBacterial Genetics and Biotechnology

Pre-expression of a sulfhydryl oxidase significantly increases the yields of eukaryotic disulfide bond containing proteins expressed in the cytoplasm of E.coli

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Nguyen, Van Dat, Hatahet, Feras, Salo, Kirsi EH, Enlund, Eveliina, Zhang, Chi, Ruddock, Lloyd W·2011·Microbial Cell Factories

Abstract

Background: Disulfide bonds are one of the most common post-translational modifications found in proteins. The production of proteins that contain native disulfide bonds is challenging, especially on a large scale. Either the protein needs to be targeted to the endoplasmic reticulum in eukaryotes or to the prokaryotic periplasm. These compartments that are specialised for disulfide bond formation have an active catalyst for their formation, along with catalysts for isomerization to the native state. We have recently shown that it is possible to produce large amounts of prokaryotic disulfide bond containing proteins in the cytoplasm of wild-type bacteria such as E. coli by the introduction of catalysts for both of these processes. Results: Here we show that the introduction of Erv1p, a sulfhydryl oxidase and a disulfide isomerase allows the efficient formation of natively folded eukaryotic proteins with multiple disulfide bonds in the cytoplasm of E. coli. The production of disulfide bonded proteins was also aided by the use of an appropriate fusion protein to keep the folding intermediates soluble and by choice of media. By combining the pre-expression of a sulfhydryl oxidase and a disulfide isomerase with these other factors, high level expression of even complex disulfide bonded eukaryotic proteins is possible Conclusions: Our results show that the production of eukaryotic proteins with multiple disulfide bonds in the cytoplasm of E. coli is possible. The required exogenous components can be put onto a single plasmid vector allowing facile transfer between different prokaryotic strains. These results open up new avenues for the use of E. coli as a microbial cell factory.

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Authors
Nguyen, V. D., Hatahet, F., Salo, K. E., Enlund, E., Zhang, C., & Ruddock, L. W.
Affiliations
University of Oulu (FI)
Corresponding author
Ruddock, Lloyd W
Venue
Microbial Cell Factories
Published
2011-01-07
Volume
10
Issue
1
Pages
1-1
ISSN
1475-2859 (ISSN-L)
OpenAlex
W2135101596
Cited by
260
References
31
Citations by year
2026: 7 · 2025: 8 · 2024: 12 · 2023: 20 · 2022: 14 · 2021: 18 · 2020: 19 · 2019: 13 · 2018: 16 · 2017: 20 · 2016: 18 · 2015: 18 · 2014: 24 · 2013: 25 · 2012: 17
FWCI
10.01
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Microbial Cell Factories (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Academy of Finland
  • Tekes
  • Oulun Yliopisto
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein purification and stability
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
sulfhydryl oxidase, disulfide bond formation, protein disulfide isomerase, fusion protein, microbial cell factories, recombinant protein expression
MeSH terms
Cytoplasm, Disulfides, Escherichia coli, Genetic Engineering, Humans, Oxidoreductases, Protein Processing, Post-Translational, Recombinant Proteins, Gene Expression, Protein Disulfide-Isomerases, Protein Transport, Oxidoreductases Acting on Sulfur Group Donors

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