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Narh JK, Casillas-Vega NG, Zarate X. LL-37_Renalexin hybrid peptide exhibits antimicrobial activity at lower MICs than its counterpart single peptides. Appl Microbiol Biotechnol 2024; 108:126. [PMID: 38229302 DOI: 10.1007/s00253-023-12887-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 11/16/2023] [Accepted: 11/25/2023] [Indexed: 01/18/2024]
Abstract
An alarming global public health and economic peril has been the emergence of antibiotic resistance resulting from clinically relevant bacteria pathogens, including Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumonia, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species constantly exhibiting intrinsic and extrinsic resistance mechanisms against last-resort antibiotics like gentamycin, ciprofloxacin, tetracycline, colistin, and standard ampicillin prescription in clinical practices. The discovery and applications of antimicrobial peptides (AMPs) with antibacterial properties have been considered and proven as alternative antimicrobial agents to antibiotics. In this study, we have designed, produced, and purified a recombinant novel multifunctional hybrid antimicrobial peptide LL-37_Renalexin for the first time via the application of newly designed flexible GS peptide linker coupled with the use of our previously characterized small metal-binding proteins SmbP and CusF3H+ as carrier proteins that allow for an enhanced bacterial expression, using BL21(DE3) and SHuffle T7(DE3) Escherichia coli strains, and purification of the hybrid peptide via immobilized metal affinity chromatography. The purified tag-free LL-37_Renalexin hybrid peptide exhibited above 85% reduction in bacteria colony-forming units and broad-spectrum antimicrobial effects against Staphylococcus aureus, Escherichia coli, Methicillin-resistant Staphylococcus aureus (MRSA), and Klebsiella pneumoniae bacteria clinical isolates at a lower minimum inhibition concentration level (10-33 μM) as compared to its counterpart single-AMPs LL-37 and Renalexin (50-100 μM). KEY POINTS: • The hybrid antimicrobial peptide LL-37_Renalexin has been designed using a GS linker. • The peptide was expressed with the carrier proteins SmbP and CusF3H+. • The hybrid peptide shows antibacterial potency against clinical bacterial isolates.
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Affiliation(s)
- Julius Kwesi Narh
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, Avenida Universidad s/n, Ciudad Universitaria, 66455, San Nicolas de los Garza, NL, Mexico
| | - Nestor G Casillas-Vega
- Departamento de Patologia Clinica, Hospital Universitario Dr. Jose Eleuterio Gonzalez, Universidad Autonoma de Nuevo Leon, 64460, Monterrey, NL, Mexico
| | - Xristo Zarate
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, Avenida Universidad s/n, Ciudad Universitaria, 66455, San Nicolas de los Garza, NL, Mexico.
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2
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Chen JP, Gong JS, Su C, Li H, Xu ZH, Shi JS. Improving the soluble expression of difficult-to-express proteins in prokaryotic expression system via protein engineering and synthetic biology strategies. Metab Eng 2023; 78:99-114. [PMID: 37244368 DOI: 10.1016/j.ymben.2023.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 05/23/2023] [Indexed: 05/29/2023]
Abstract
Solubility and folding stability are key concerns for difficult-to-express proteins (DEPs) restricted by amino acid sequences and superarchitecture, resolved by the precise distribution of amino acids and molecular interactions as well as the assistance of the expression system. Therefore, an increasing number of tools are available to achieve efficient expression of DEPs, including directed evolution, solubilization partners, chaperones, and affluent expression hosts, among others. Furthermore, genome editing tools, such as transposons and CRISPR Cas9/dCas9, have been developed and expanded to construct engineered expression hosts capable of efficient expression ability of soluble proteins. Accounting for the accumulated knowledge of the pivotal factors in the solubility and folding stability of proteins, this review focuses on advanced technologies and tools of protein engineering, protein quality control systems, and the redesign of expression platforms in prokaryotic expression systems, as well as advances of the cell-free expression technologies for membrane proteins production.
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Affiliation(s)
- Jin-Ping Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China.
| | - Chang Su
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Heng Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Zheng-Hong Xu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
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3
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Koch NG, Budisa N. Focused Engineering of Pyrrolysyl-tRNA Synthetase-Based Orthogonal Translation Systems for the Incorporation of Various Noncanonical Amino Acids. Methods Mol Biol 2023; 2676:3-19. [PMID: 37277621 DOI: 10.1007/978-1-0716-3251-2_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The expansion of the genetic code has become a valuable tool for molecular biology, biochemistry, and biotechnology. The pyrrolysyl-tRNA synthetase (PylRS) variants with their cognate tRNAPyl derived from methanogenic archaea of the genus Methanosarcina are the most popular tools for ribosomally mediated site-specific and proteome-wide statistical incorporation of noncanonical amino acids (ncAAs) into proteins. The incorporation of ncAAs can be used for numerous biotechnological and even therapeutically relevant applications. Here we present a protocol of engineering PylRS for novel substrates with unique chemical functionalities. These functional groups can act as intrinsic probes, especially in complex biological environments such as mammalian cells, tissues, and even whole animals.
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Affiliation(s)
- Nikolaj G Koch
- Bioanalytics Group, Institute of Biotechnology, Technische Universität Berlin, Berlin, Germany
- Biocatalysis Group, Institute of Chemistry, Technische Universität Berlin, Berlin, Germany
| | - Nediljko Budisa
- Biocatalysis Group, Institute of Chemistry, Technische Universität Berlin, Berlin, Germany.
- Chemical Synthetic Biology, Department of Chemistry, University of Manitoba, Winnipeg, MB, Canada.
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4
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Koch NG, Baumann T, Budisa N. Efficient Unnatural Protein Production by Pyrrolysyl-tRNA Synthetase With Genetically Fused Solubility Tags. Front Bioeng Biotechnol 2022; 9:807438. [PMID: 35284428 PMCID: PMC8905625 DOI: 10.3389/fbioe.2021.807438] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 11/17/2021] [Indexed: 11/27/2022] Open
Abstract
Introducing non-canonical amino acids (ncAAs) by engineered orthogonal pairs of aminoacyl-tRNA synthetases and tRNAs has proven to be a highly useful tool for the expansion of the genetic code. Pyrrolysyl-tRNA synthetase (PylRS) from methanogenic archaeal and bacterial species is particularly attractive due to its natural orthogonal reactivity in bacterial and eukaryotic cells. However, the scope of such a reprogrammed translation is often limited, due to low yields of chemically modified target protein. This can be the result of substrate specificity engineering, which decreases the aminoacyl-tRNA synthetase stability and reduces the abundance of active enzyme. We show that the solubility and folding of these engineered enzymes can become a bottleneck for the production of ncAA-containing proteins in vivo. Solubility tags derived from various species provide a strategy to remedy this issue. We find the N-terminal fusion of the small metal binding protein from Nitrosomonas europaea to the PylRS sequence to improve enzyme solubility and to boost orthogonal translation efficiency. Our strategy enhances the production of site-specifically labelled proteins with a variety of engineered PylRS variants by 200–540%, and further allows triple labeling. Even the wild-type enzyme gains up to 245% efficiency for established ncAA substrates.
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Affiliation(s)
- Nikolaj G Koch
- Biokatalyse, Institut für Chemie, Technische Universität Berlin, Berlin, Germany.,Bioanalytik, Institut für Biotechnologie, Technische Universität Berlin, Berlin, Germany
| | - Tobias Baumann
- Biokatalyse, Institut für Chemie, Technische Universität Berlin, Berlin, Germany
| | - Nediljko Budisa
- Biokatalyse, Institut für Chemie, Technische Universität Berlin, Berlin, Germany.,Chemical Synthetic Biology, Department of Chemistry, University of Manitoba, Winnipeg, MB, Canada
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5
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Martinez-Mora E, Arredondo-Espinoza E, Casillas-Vega NG, Cantu-Cardenas ME, Balderas-Renteria I, Zarate X. The Small Metal-Binding Protein SmbP Improves the Expression and Purification of the Recombinant Antitumor-Analgesic Peptide from the Chinese Scorpion Buthus martensii Karsch in Escherichia coli. Curr Issues Mol Biol 2022; 44:550-558. [PMID: 35723324 PMCID: PMC8929023 DOI: 10.3390/cimb44020038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 11/16/2022] Open
Abstract
We have recently shown that SmbP, the small metal-binding protein of Nitrosomonas europaea, can be employed as a fusion protein to express and purify recombinant proteins and peptides in Escherichia coli. SmbP increases solubility, allows simple, one-step purification through affinity chromatography, and provides superior final yields due to its low molecular weight. In this work, we report for the first time the use of SmbP to produce a recombinant peptide with anticancer activity: the antitumor-analgesic peptide (BmK-AGAP), a neurotoxin isolated from the venom of the Chinese scorpion Buthus martensii Karsch. This peptide was expressed in Escherichia coli SHuffle for correct, cytoplasmic, disulfide bond formation and tagged with SmbP at the N-terminus to improve its solubility and allow purification using immobilized metal affinity chromatography. SmbP_BmK-AGAP was found in the soluble fraction of the cell lysate. After purification and removal of SmbP by digestion with enterokinase, 1.8 mg of pure and highly active rBmK-AGAP was obtained per liter of cell culture. rBmK-AGAP exhibited antiproliferative activity on the MCF-7 cancer cell line, with a half-maximal inhibitory concentration value of 7.24 μM. Based on these results, we considered SmbP to be a suitable carrier protein for the production of recombinant, biologically active BmK-AGAP. We propose that SmbP should be an attractive fusion protein for the expression and purification of additional recombinant proteins or peptides that display anticancer activities.
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Affiliation(s)
- Evelyn Martinez-Mora
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza 66455, Mexico; (E.M.-M.); (E.A.-E.); (M.E.C.-C.); (I.B.-R.)
| | - Eder Arredondo-Espinoza
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza 66455, Mexico; (E.M.-M.); (E.A.-E.); (M.E.C.-C.); (I.B.-R.)
| | - Nestor G. Casillas-Vega
- Departamento de Patologia Clinica, Hospital Universitario Dr. Jose Eleuterio Gonzalez, Universidad Autonoma de Nuevo Leon, Monterrey 64460, Mexico;
| | - Maria Elena Cantu-Cardenas
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza 66455, Mexico; (E.M.-M.); (E.A.-E.); (M.E.C.-C.); (I.B.-R.)
| | - Isaias Balderas-Renteria
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza 66455, Mexico; (E.M.-M.); (E.A.-E.); (M.E.C.-C.); (I.B.-R.)
| | - Xristo Zarate
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza 66455, Mexico; (E.M.-M.); (E.A.-E.); (M.E.C.-C.); (I.B.-R.)
- Correspondence: ; Tel.: +52-818-329-4000 (ext. 3444)
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6
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Ortega C, Oppezzo P, Correa A. Overcoming the Solubility Problem in E. coli: Available Approaches for Recombinant Protein Production. Methods Mol Biol 2022; 2406:35-64. [PMID: 35089549 DOI: 10.1007/978-1-0716-1859-2_2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Despite the importance of recombinant protein production in the academy and industrial fields, many issues concerning the expression of soluble and homogeneous products are still unsolved. Several strategies were developed to overcome these obstacles; however, at present, there is no magic bullet that can be applied for all cases. Indeed, several key expression parameters need to be evaluated for each protein. Among the different hosts for protein expression, Escherichia coli is by far the most widely used. In this chapter, we review many of the different tools employed to circumvent protein insolubility problems.
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Affiliation(s)
- Claudia Ortega
- Recombinant Protein Unit, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Pablo Oppezzo
- Recombinant Protein Unit, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Agustín Correa
- Recombinant Protein Unit, Institut Pasteur de Montevideo, Montevideo, Uruguay.
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7
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Perez-Perez DA, Villanueva-Ramirez TDJ, Hernandez-Pedraza AE, Casillas-Vega NG, Gonzalez-Barranco P, Zarate X. The Small Metal-Binding Protein SmbP Simplifies the Recombinant Expression and Purification of the Antimicrobial Peptide LL-37. Antibiotics (Basel) 2021; 10:1271. [PMID: 34680851 PMCID: PMC8532731 DOI: 10.3390/antibiotics10101271] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/24/2021] [Accepted: 10/02/2021] [Indexed: 11/16/2022] Open
Abstract
(1) Background: The cathelicidin peptide LL-37 is a prominent molecule with many biological activities, including antimicrobial. Due to its importance, here, we describe the production of LL-37 tagged with SmbP, a relatively new carrier protein that improves the production of recombinant proteins and peptides in Escherichia coli. We present an alternative method for the rapid expression, purification, and antimicrobial evaluation of LL-37, that involves only one purification step. (2) Methods: A DNA construct of SmbP_LL-37 was transformed into E. coli BL21(DE3); after overnight expression, the protein was purified directly from the cell lysate using immobilized metal-affinity chromatography. SmbP_LL-37 was treated with Enterokinase to obtain the free LL-37 peptide. The antimicrobial activity of both SmbP_LL-37 and free LL-37 was determined using the colony forming unit assay method. (3) Results: SmbP_LL-37 was observed in the soluble fraction of the cell lysate; after purification with IMAC, protein gel electrophoresis, and analysis by ImageJ, it showed 90% purity. A total of 3.6 mg of SmbP_LL-37 was produced from one liter of cell culture. SmbP_LL-37 and free LL-37 both showed inhibition activity against Staphylococcus aureus and Escherichia coli. (4) Conclusions: The SmbP fusion protein is a valuable tool for producing biologically-active LL-37 peptide. The production method described here should be of interest for the expression and purification of additional cationic peptides, since it cuts the purification time considerably prior to determination of antimicrobial activity.
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Affiliation(s)
- David A. Perez-Perez
- Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza 66455, Mexico; (D.A.P.-P.); (T.d.J.V.-R.); (P.G.-B.)
| | - Teresa de J. Villanueva-Ramirez
- Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza 66455, Mexico; (D.A.P.-P.); (T.d.J.V.-R.); (P.G.-B.)
| | - Adriana E. Hernandez-Pedraza
- CHRISTUS—LATAM HUB Center of Excellence and Innovation, S.C., Lazaro Cardenas 2321, San Pedro Garza Garcia 66260, Mexico;
| | - Nestor G. Casillas-Vega
- Universidad Autonoma de Nuevo Leon, Departamento de Patologia Clinica, Hospital Universitario Dr. Jose Eleuterio Gonzalez, Monterrey 64460, Mexico;
| | - Patricia Gonzalez-Barranco
- Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza 66455, Mexico; (D.A.P.-P.); (T.d.J.V.-R.); (P.G.-B.)
| | - Xristo Zarate
- Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza 66455, Mexico; (D.A.P.-P.); (T.d.J.V.-R.); (P.G.-B.)
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8
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Koch NG, Goettig P, Rappsilber J, Budisa N. Engineering Pyrrolysyl-tRNA Synthetase for the Incorporation of Non-Canonical Amino Acids with Smaller Side Chains. Int J Mol Sci 2021; 22:11194. [PMID: 34681855 PMCID: PMC8538471 DOI: 10.3390/ijms222011194] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 01/11/2023] Open
Abstract
Site-specific incorporation of non-canonical amino acids (ncAAs) into proteins has emerged as a universal tool for systems bioengineering at the interface of chemistry, biology, and technology. The diversification of the repertoire of the genetic code has been achieved for amino acids with long and/or bulky side chains equipped with various bioorthogonal tags and useful spectral probes. Although ncAAs with relatively small side chains and similar properties are of great interest to biophysics, cell biology, and biomaterial science, they can rarely be incorporated into proteins. To address this gap, we report the engineering of PylRS variants capable of incorporating an entire library of aliphatic "small-tag" ncAAs. In particular, we performed mutational studies of a specific PylRS, designed to incorporate the shortest non-bulky ncAA (S-allyl-l-cysteine) possible to date and based on this knowledge incorporated aliphatic ncAA derivatives. In this way, we have not only increased the number of translationally active "small-tag" ncAAs, but also determined key residues responsible for maintaining orthogonality, while engineering the PylRS for these interesting substrates. Based on the known plasticity of PylRS toward different substrates, our approach further expands the reassignment capacities of this enzyme toward aliphatic amino acids with smaller side chains endowed with valuable functionalities.
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Affiliation(s)
- Nikolaj G. Koch
- Institut für Chemie, Technische Universität Berlin, 10623 Berlin, Germany;
- Institut für Biotechnologie-Bioanalytik, Technische Universität Berlin, 10623 Berlin, Germany;
| | - Peter Goettig
- Structural Biology Group, Department of Biosciences, University of Salzburg, 5020 Salzburg, Austria;
| | - Juri Rappsilber
- Institut für Biotechnologie-Bioanalytik, Technische Universität Berlin, 10623 Berlin, Germany;
- Wellcome Centre for Cell Biology, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - Nediljko Budisa
- Institut für Chemie, Technische Universität Berlin, 10623 Berlin, Germany;
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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9
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Montfort-Gardeazabal JM, Claudio PCMS, Casillas-Vega NG, Zarate X. Expression and Purification of the VpDef Defensin in Escherichia coli using the Small Metal-Binding Proteins CusF3H+ and SmbP. Protein Pept Lett 2021; 28:108-114. [PMID: 32520670 DOI: 10.2174/0929866527666200610133407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/22/2020] [Accepted: 04/25/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The heterologous production of antimicrobial peptides in bacterial models can produce insoluble proteins due to the lack of proper folding. Fusion proteins have been used to increase the expression and solubility of these types of proteins with varying degrees of success. OBJECTIVES Here, we demonstrate the use of the small metal-binding proteins CusF3H+ (9.9kDa) and SmbP (9.9kDa) as fusion partners for the soluble expression of the bioactive antimicrobial peptide VpDef(6.9 kDa) in Escherichia coli. METHODS The recombinant VpDef (rVpDef) peptide was expressed as a translational fusion with CusF3H+ and SmbP in Escherichia coli SHuffle under different small-scale culture conditions. The best conditions were applied to 1-liter cultures, with subsequent purification of the recombinant protein through IMAC chromatography. The recombinant protein was digested using enterokinase to liberate the peptide from the fusion protein, and a second IMAC chromatography step removed the fusion protein. The purified peptide was tested against two Gram-positive and two Gram-negative bacteria. RESULTS The use either of CusF3H+ or of SmbP results in recombinant proteins that are found in the soluble fraction of the bacterial lysate; these recombinant proteins are easily purified through IMAC chromatography, and rVpDef is readily separated following enterokinase treatment. The purified rVpDef peptide exhibits antimicrobial properties against both Gram-positive and Gram-negative. CONCLUSION Use of the fusion proteins CusF3H+ and SmbP results in production of a soluble recombinant protein containing the antimicrobial peptide rVpDef that is correctly folded and that retains its antimicrobial properties once purified.
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Affiliation(s)
| | - Pilar C Morales-San Claudio
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, San Nicolas de los Garza, NL 66455, Mexico
| | - Nestor G Casillas-Vega
- Departamento de Patologia Clinica, Universidad Autonoma de Nuevo Leon, Hospital Dr. Jose Eleuterio Gonzalez, Monterrey, NL 64460, Mexico
| | - Xristo Zarate
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, San Nicolas de los Garza, NL 66455, Mexico
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10
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Expression and Purification of Recombinant Proteins in Escherichia coli Tagged with the Metal-Binding Proteins SmbP and CusF3H. Methods Mol Biol 2020. [PMID: 33128759 DOI: 10.1007/978-1-0716-0775-6_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
The bacterium Escherichia coli is still considered the first option as a microbial cell factory for recombinant protein production, and affinity chromatography is by far the preferred technique for initial purification after protein expression and cell lysis. In this chapter, we describe the methodology to express and purify recombinant proteins in E. coli tagged with the first two metal-binding proteins proposed as fusion partners. They are the small metal-binding protein SmbP and a mutant of the copper resistance protein CusF3H+. There are several advantages of using them as protein tags: they prevent the formation of inclusion bodies by increasing solubility of the target proteins, they enable purification by immobilized metal-affinity chromatography using Ni(II) ions with high purity, and because of their low molecular weights, excellent final yields are obtained for the target proteins after cleavage and removal of the protein tag. Here we also describe the protocol for the production of proteins in the periplasm of E. coli tagged with two SmbP variants that include the PelB or the TorA signal sequences for transport via the Sec or the Tat pathway, respectively. Based on these methods, we consider CusF3H+ and SmbP excellent alternatives as fusion proteins for the production of recombinant proteins in E. coli.
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11
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Expression and purification of the antimicrobial peptide Bin1b in Escherichia coli tagged with the fusion proteins CusF3H+ and SmbP. Protein Expr Purif 2020; 178:105784. [PMID: 33129981 DOI: 10.1016/j.pep.2020.105784] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 10/22/2020] [Accepted: 10/23/2020] [Indexed: 11/22/2022]
Abstract
We have previously shown that the small metal-binding proteins CusF3H+ and SmbP can be used as fusion proteins for the expression and purification of recombinant proteins in Escherichia coli. Because of their small size, both around 10 kDa, they are suitable for the production of peptides to avoid meager yields after the final purification step of tag removal. Bin1b is a beta-defensin found in the epididymis of rats that has shown to have antimicrobial activity. Previous methodologies used to express this antimicrobial peptide in E. coli involve the expression of the peptide as inclusion bodies followed by in vitro refolding or the supplementation of the proteins necessary for proper folding of the peptide in the cytoplasm via a second plasmid. Here, we developed a methodology that forgoes these approaches and instead uses the fusion proteins CusF3H+ or SmbP and the E. coli strain SHuffle to obtain a soluble recombinant protein that contains the mature Bin1b peptide. The recombinant protein is purified using IMAC chromatography and is subsequently cleaved with enterokinase to separate the fusion protein from Bin1b. The purified peptide displays antimicrobial activity against E. coli, as previously shown. Furthermore, we also tested its antimicrobial activity against the Gram-positive bacteria Staphylococcus aureus and found that Bin1b is also capable of inhibiting the growth of this bacterium. In conclusion, we developed a practical methodology for the expression and purification of the bioactive Bin1b peptide in E. coli using the fusion proteins CusF3H+ and SmbP. This approach could be further applied for the production of more biologically active peptides.
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12
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Perez‐Perez DA, Pioquinto‐Avila E, Arredondo‐Espinoza E, Morones‐Ramirez JR, Balderas‐Renteria I, Zarate X. Engineered small metal-binding protein tag improves the production of recombinant human growth hormone in the periplasm of Escherichia coli. FEBS Open Bio 2020; 10:546-551. [PMID: 32049439 PMCID: PMC7137794 DOI: 10.1002/2211-5463.12808] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 01/30/2020] [Accepted: 02/10/2020] [Indexed: 12/02/2022] Open
Abstract
Fusion proteins play an important role in the production of recombinant proteins in Escherichia coli. They are mostly used for cytoplasmic expression since they can be designed to increase the solubility of the target protein, which then can be easily purified via affinity chromatography. In contrast, fusion proteins are not usually included in construct designs for periplasmic production. Instead, a signal sequence is inserted for protein transport into the periplasm and a C-terminal his-tag added for subsequent purification. Our research group has proposed the small metal-binding protein (SmbP) isolated from the periplasm of Nitrosomonas europaea as a new fusion protein to express recombinant proteins in the cytoplasm or periplasm of E. coli. SmbP also allows purification via immobilized metal affinity chromatography using Ni(II) ions. Recently, we have optimized the periplasmic production of proteins tagged with SmbP by exchanging its native signal peptide with one taken from pectate lyase B (PelB), substantially increasing the amount of protein produced. In this work, we have expressed and purified soluble bioactive human growth hormone (hGH) tagged with PelB-SmbP and obtained the highest periplasmic production reported for this protein so far. Its activity, tested on Nb2-11 cells, was equivalent to commercial growth hormone at 50 ng·mL-1 . Therefore, we strongly recommend the use of PelB-SmbP as a protein tag for the expression and purification of hGH or other possible target proteins in the periplasm of E. coli.
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Affiliation(s)
- David A. Perez‐Perez
- Universidad Autonoma de Nuevo LeonFacultad de Ciencias QuimicasSan Nicolas de los GarzaMexico
| | - Elizeth Pioquinto‐Avila
- Universidad Autonoma de Nuevo LeonFacultad de Ciencias QuimicasSan Nicolas de los GarzaMexico
| | - Eder Arredondo‐Espinoza
- Universidad Autonoma de Nuevo LeonFacultad de Ciencias QuimicasSan Nicolas de los GarzaMexico
| | - Jose Ruben Morones‐Ramirez
- Universidad Autonoma de Nuevo LeonFacultad de Ciencias QuimicasSan Nicolas de los GarzaMexico
- Universidad Autonoma de Nuevo LeonFacultad de Ciencias QuimicasCentro de Investigacion en Biotecnologia y NanotecnologiaParque de Investigacion e Innovacion TecnologicaApodacaMexico
| | - Isaias Balderas‐Renteria
- Universidad Autonoma de Nuevo LeonFacultad de Ciencias QuimicasSan Nicolas de los GarzaMexico
- Universidad Autonoma de Nuevo LeonFacultad de Ciencias QuimicasCentro de Investigacion en Biotecnologia y NanotecnologiaParque de Investigacion e Innovacion TecnologicaApodacaMexico
| | - Xristo Zarate
- Universidad Autonoma de Nuevo LeonFacultad de Ciencias QuimicasSan Nicolas de los GarzaMexico
- Universidad Autonoma de Nuevo LeonFacultad de Ciencias QuimicasCentro de Investigacion en Biotecnologia y NanotecnologiaParque de Investigacion e Innovacion TecnologicaApodacaMexico
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13
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Rosano GL, Morales ES, Ceccarelli EA. New tools for recombinant protein production in Escherichia coli: A 5-year update. Protein Sci 2019; 28:1412-1422. [PMID: 31219641 PMCID: PMC6635841 DOI: 10.1002/pro.3668] [Citation(s) in RCA: 195] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 06/10/2019] [Indexed: 12/11/2022]
Abstract
The production of proteins in sufficient amounts is key for their study or use as biotherapeutic agents. Escherichia coli is the host of choice for recombinant protein production given its fast growth, easy manipulation, and cost-effectiveness. As such, its protein production capabilities are continuously being improved. Also, the associated tools (such as plasmids and cultivation conditions) are subject of ongoing research to optimize product yield. In this work, we review the latest advances in recombinant protein production in E. coli.
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Affiliation(s)
- Germán L. Rosano
- Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET. Facultad de Ciencias Bioquímicas y FarmacéuticasUniversidad Nacional de RosarioRosarioArgentina
| | - Enrique S. Morales
- Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET. Facultad de Ciencias Bioquímicas y FarmacéuticasUniversidad Nacional de RosarioRosarioArgentina
| | - Eduardo A. Ceccarelli
- Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET. Facultad de Ciencias Bioquímicas y FarmacéuticasUniversidad Nacional de RosarioRosarioArgentina
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14
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Khurana L, ElGindi M, Tilstam PV, Pantouris G. Elucidating the role of an immunomodulatory protein in cancer: From protein expression to functional characterization. Methods Enzymol 2019; 629:307-360. [PMID: 31727247 DOI: 10.1016/bs.mie.2019.05.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Several fundamental discoveries made over the last two decades, in the field of cancer biology, have increased our understanding of the complex tumor micro- and macroenvironments. This has shifted the current empirical cancer therapies to more rationalized treatments targeting immunomodulatory proteins. From the point of identification, a protein target undergoes several interrogations, which are necessary to truly define its druggability. Here, we outline some basic steps that can be followed for in vitro characterization of a potential immunomodulatory protein target. We describe procedures for recombinant protein expression and purification including key annotations on protein cloning, expression systems, purification strategies and protein characterization using structural and biochemical approaches. For functional characterization, we provide detailed protocols for using flow-cytometric techniques in cell lines or primary cells to study protein expression profiles, proliferation, apoptosis and cell-cycle changes. This multilevel approach can provide valuable, in-depth understanding of any protein target with potential immunomodulatory effects.
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Affiliation(s)
- Leepakshi Khurana
- Department of Pharmacology, School of Medicine, Yale University, New Haven, CT, United States
| | - Mei ElGindi
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
| | - Pathricia V Tilstam
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
| | - Georgios Pantouris
- Department of Pharmacology, School of Medicine, Yale University, New Haven, CT, United States; Department of Chemistry, University of the Pacific, Stockton, CA, United States.
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15
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Promiscuity of host cell proteins in the purification of histidine tagged recombinant xylanase A by IMAC procedures: A case study with a Ni 2+-tacn-based IMAC system. Protein Expr Purif 2019; 162:51-61. [PMID: 31170454 DOI: 10.1016/j.pep.2019.05.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 05/24/2019] [Accepted: 05/27/2019] [Indexed: 11/23/2022]
Abstract
Determination of the extent of host cell protein (HCP) contamination is an essential pre-requisite to validate the chromatographic purification of recombinant proteins. This study explores how different experimental conditions affect the HCP profiles generated during the immobilised metal ion affinity chromatographic (IMAC) purification with a Ni2+-1,4,7-triaza-cyclononane (tacn) Sepharose FF™ sorbent of the Bacillus halodurans N- and C-terminal His6-tagged xylanase A, expressed by Escherichia coli BL21(DE3) cells, and captured directly from cell lysates. Comparative studies were also carried out under identical loading, wash and elution conditions using nitrilotriacetic acid (NTA), also immobilised onto an agarose support and complexed with Ni2+ ions. High-resolution tandem mass spectrometry of the tryptic peptides derived from the proteins present in the IMAC flow-through, wash and elution fractions confirmed that the E. coli BL21(DE3) HCP profiles were dependent on the choice of adsorbent. With feedstocks containing the N- or C-terminal His6-tagged xylanase A, in several instances the same E. coli BL21(DE3) HCPs were found to co-elute with the tagged protein from either adsorbent, indicating a preferential ability of some HCPs to bind to both the IMAC resin and to the recombinant protein. This promiscuous behaviour has been found to be due to factors other than just the presence of histidine-rich motifs within the amino acid sequences of these HCPs. This case study demonstrates that the choice of protein expression and separation conditions impact on the levels of HCP contamination when different IMAC systems are employed.
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16
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Santos BD, Morones-Ramirez JR, Balderas-Renteria I, Casillas-Vega NG, Galbraith DW, Zarate X. Optimizing Periplasmic Expression in Escherichia coli for the Production of Recombinant Proteins Tagged with the Small Metal-Binding Protein SmbP. Mol Biotechnol 2019; 61:451-460. [PMID: 30997666 DOI: 10.1007/s12033-019-00176-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We have previously shown that the small metal-binding protein (SmbP) extracted from the gram-negative bacterium Nitrosomonas europaea can be employed as a fusion protein for the expression and purification of recombinant proteins in Escherichia coli. With the goal of increasing the amounts of SmbP-tagged proteins produced in the E. coli periplasm, we replaced the native SmbP signal peptide with three different signal sequences: two were from the proteins CusF and PelB, for transport via the Sec pathway, and one was the signal peptide from TorA, for transport via the Tat pathway. Expression of SmbP-tagged Red Fluorescent Protein (RFP) using these three alternative signal peptides individually showed a considerable increase in protein levels in the periplasm of E. coli as compared to its level using the SmbP signal sequence. Therefore, for routine periplasmic expression and purification of recombinant proteins in E. coli, we highly recommend the use of the fusion proteins PelB-SmbP or CusF-SmbP, since these signal sequences increase periplasmic production considerably as compared to the wild-type. Our work, finally, demonstrates that periplasmic expression for SmbP-tagged proteins is not limited to the Sec pathway, in that the TorA-SmbP construct can export reasonable quantities of folded proteins to the periplasm. Although the Sec route has been the most widely used, sometimes, depending on the nature of the protein of interest, for example, if it contains cofactors, it is more appropriate to consider using the Tat route over the Sec. SmbP therefore can be recommended in terms of its particular versatility when combined with signal peptides for the two different routes.
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Affiliation(s)
- Bryan D Santos
- Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, 66455, San Nicolas de los Garza, NL, Mexico
| | - Jose Ruben Morones-Ramirez
- Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, 66455, San Nicolas de los Garza, NL, Mexico
- Universidad Autonoma de Nuevo Leon, Centro de Investigacion en Biotecnologia y Nanotecnologia, Facultad de Ciencias Quimicas, Parque de Investigacion e Innovacion Tecnologica, 66629, Apodaca, NL, Mexico
| | - Isaias Balderas-Renteria
- Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, 66455, San Nicolas de los Garza, NL, Mexico
- Universidad Autonoma de Nuevo Leon, Centro de Investigacion en Biotecnologia y Nanotecnologia, Facultad de Ciencias Quimicas, Parque de Investigacion e Innovacion Tecnologica, 66629, Apodaca, NL, Mexico
| | - Nestor G Casillas-Vega
- Departamento de Patologia Clinica, Universidad Autonoma de Nuevo Leon, Hospital Universitario Dr. Jose Eleuterio Gonzalez, 64460, Monterrey, NL, Mexico
| | - David W Galbraith
- School of Plant Sciences and BIO5 Institute, University of Arizona, Tucson, AZ, 85721, USA
| | - Xristo Zarate
- Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Quimicas, 66455, San Nicolas de los Garza, NL, Mexico.
- Universidad Autonoma de Nuevo Leon, Centro de Investigacion en Biotecnologia y Nanotecnologia, Facultad de Ciencias Quimicas, Parque de Investigacion e Innovacion Tecnologica, 66629, Apodaca, NL, Mexico.
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17
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Wu Y, Ma Y, Li L, Yang X. Functional Expression, Purification and Identification of Modified Antioxidant Peptides from Pinctada fucata Muscle. Int J Pept Res Ther 2019. [DOI: 10.1007/s10989-018-9691-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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18
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Molecular modification, expression and purification of new subtype antioxidant peptide from Pinctada fucata by recombinant Escherichia coli to improve antioxidant-activity. Journal of Food Science and Technology 2018; 55:4266-4275. [PMID: 30228425 DOI: 10.1007/s13197-018-3365-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 06/26/2018] [Accepted: 07/30/2018] [Indexed: 02/06/2023]
Abstract
The aim of this study was to establish a system for the efficient expression and purification of new subtype of antioxidant peptide from Pinctada fucata meat (NPFMAP), which is designed by molecular modification technology based on the sequence of purified and identified antioxidant peptide from Pinctada fucata meat (PFMAP, Gly-Ala-Gly-Leu-Pro-Gly-Lys-Arg-Glu-Arg), and to better understand the relationship between structure and antioxidant activity. Meanwhile, gene codon usage was optimized and the glutathione S-transferase (GST) tag of pGEX-6P-1 was added to facilitate expression and purification NPFMAP in Escherichia coli. The results of antioxidant activity assay in vitro showed a higher antioxidant activity in NPFMAP than that in enzymatic hydrolysis digested or chemically synthesized PFMAP. In particular, the DPPH scavenging radical activity increased by about 4.7 times after molecular modification. Structural bioanalysis indicated that new subtype antioxidant peptide had spatial conformation and good hydrophilic after modification, which was confirmed by antioxidant activity assays. Thus, the proposed method could be used to obtain NPFMAP with high antioxidant activity.
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19
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Paraskevopoulou V, Falcone FH. Polyionic Tags as Enhancers of Protein Solubility in Recombinant Protein Expression. Microorganisms 2018; 6:microorganisms6020047. [PMID: 29882886 PMCID: PMC6027335 DOI: 10.3390/microorganisms6020047] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/16/2018] [Accepted: 05/21/2018] [Indexed: 12/30/2022] Open
Abstract
Since the introduction of recombinant protein expression in the second half of the 1970s, the growth of the biopharmaceutical field has been rapid and protein therapeutics has come to the foreground. Biophysical and structural characterisation of recombinant proteins is the essential prerequisite for their successful development and commercialisation as therapeutics. Despite the challenges, including low protein solubility and inclusion body formation, prokaryotic host systems and particularly Escherichia coli, remain the system of choice for the initial attempt of production of previously unexpressed proteins. Several different approaches have been adopted, including optimisation of growth conditions, expression in the periplasmic space of the bacterial host or co-expression of molecular chaperones, to assist correct protein folding. A very commonly employed approach is also the use of protein fusion tags that enhance protein solubility. Here, a range of experimentally tested peptide tags, which present specific advantages compared to protein fusion tags and the concluding remarks of these experiments are reviewed. Finally, a concept to design solubility-enhancing peptide tags based on a protein’s pI is suggested.
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Affiliation(s)
- Vasiliki Paraskevopoulou
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Franco H Falcone
- Division of Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
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20
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Ahmad I, Nawaz N, Darwesh NM, ur Rahman S, Mustafa MZ, Khan SB, Patching SG. Overcoming challenges for amplified expression of recombinant proteins using Escherichia coli. Protein Expr Purif 2018; 144:12-18. [DOI: 10.1016/j.pep.2017.11.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/15/2017] [Accepted: 11/21/2017] [Indexed: 11/28/2022]
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21
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Han Y, Guo W, Su B, Guo Y, Wang J, Chu B, Yang G. High-level expression of soluble recombinant proteins in Escherichia coli using an HE-maltotriose-binding protein fusion tag. Protein Expr Purif 2018; 142:25-31. [DOI: 10.1016/j.pep.2017.09.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 09/25/2017] [Accepted: 09/25/2017] [Indexed: 11/28/2022]
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22
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Guidelines to reach high-quality purified recombinant proteins. Appl Microbiol Biotechnol 2017; 102:81-92. [DOI: 10.1007/s00253-017-8623-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/24/2017] [Accepted: 10/27/2017] [Indexed: 10/18/2022]
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23
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Oleksandrov S, Aman A, Lim W, Kim Y, Bae NH, Lee KG, Lee SJ, Park S. Development of bufferless gel electrophoresis chip for easy preparation and rapid DNA separation. Electrophoresis 2017; 39:456-461. [PMID: 28960347 DOI: 10.1002/elps.201700326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/11/2017] [Accepted: 09/20/2017] [Indexed: 11/07/2022]
Abstract
This work presents a handy, fast, and compact bufferless gel electrophoresis chip (BGEC), which consists of precast agarose gel confined in a disposable plastic body with electrodes. It does not require large volumes of buffer to fill reservoirs, or the process of immersing the gel in the buffer. It withstands voltages up to 28.4 V/cm, thereby allowing DNA separation within 10 min with a similar separation capability to the standard gel electrophoresis. The results suggest that our BGEC is highly suitable for in situ gel electrophoresis in forensic, epidemiological settings and crime scenes where standard gel electrophoresis equipment cannot be brought in while quick results are needed.
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Affiliation(s)
| | - Abdurazak Aman
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Korea
| | - Wanyoung Lim
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Korea
| | - Younghee Kim
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Korea
| | - Nam Ho Bae
- Nano-bio Application Team, National Nanofab Center (NNFC), Daejeon, Korea
| | - Kyoung G Lee
- Nano-bio Application Team, National Nanofab Center (NNFC), Daejeon, Korea
| | - Seok Jae Lee
- Nano-bio Application Team, National Nanofab Center (NNFC), Daejeon, Korea
| | - Sungsu Park
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Korea
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24
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Vargas-Cortez T, Morones-Ramirez JR, Balderas-Renteria I, Zarate X. Production of recombinant proteins in Escherichia coli tagged with the fusion protein CusF3H+. Protein Expr Purif 2017; 132:44-49. [DOI: 10.1016/j.pep.2017.01.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/07/2017] [Accepted: 01/10/2017] [Indexed: 01/05/2023]
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25
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Sun Y, Ye Q, Wu M, Wu Y, Zhang C, Yan W. High yields and soluble expression of superoxide dismutases in Escherichia coli due to the HIV-1 Tat peptide via increases in mRNA transcription. Exp Mol Med 2016; 48:e264. [PMID: 27741225 PMCID: PMC5099423 DOI: 10.1038/emm.2016.91] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 04/18/2016] [Accepted: 04/21/2016] [Indexed: 11/29/2022] Open
Abstract
This study aimed to validate the high yield and soluble expression of proteins carrying the transactivator of transcription (Tat) peptide tag, and further explored the potential mechanism by which the Tat tag increases expression. Escherichia coli superoxide dismutase (SOD) proteins, including SodA, SodB and SodC, were selected for analysis. As expected, the yields and the solubility of Tat-tagged proteins were higher than those of Tat-free proteins, and similar results were observed for the total SOD enzyme activity. Bacterial cells that overexpressed Tat-tagged proteins exhibited increased anti-paraquat activity compared with those expressing Tat-free proteins that manifested as SodA>SodC>SodB. When compared with an MG1655 wild-type strain, the growth of a ΔSodA mutant strain was found to be inhibited after paraquat treatment; the growth of ΔSodB and ΔSodC mutant strains was also slightly inhibited. The mRNA transcript level of genes encoding Tat-tagged proteins was higher than that of genes encoding Tat-free proteins. Furthermore, the α-helix and turn of Tat-tagged proteins were higher than those of Tat-free proteins, but the β-sheet and random coil content was lower. These results indicated that the incorporation of the Tat core peptide as a significant basic membrane transduction peptide in fusion proteins could increase mRNA transcripts and promote the high yield and soluble expression of heterologous proteins in E. coli.
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Affiliation(s)
- Yangdong Sun
- Department of Biological Engineering, College of Pharmacy, Jilin University, Changchun, China
| | - Qiao Ye
- Beijing Institute of Radiation Medicine, State Key Laboratory of Proteomics, Cognitive and Mental Health Research Center, Beijing, China
| | - Min Wu
- Institute of Protein Research, Tongji University, Shanghai, China
| | - Yonghong Wu
- Beijing Institute of Radiation Medicine, State Key Laboratory of Proteomics, Cognitive and Mental Health Research Center, Beijing, China
| | - Chenggang Zhang
- Beijing Institute of Radiation Medicine, State Key Laboratory of Proteomics, Cognitive and Mental Health Research Center, Beijing, China
| | - Weiqun Yan
- Department of Biological Engineering, College of Pharmacy, Jilin University, Changchun, China
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26
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Expression and purification of recombinant proteins in Escherichia coli tagged with the metal-binding protein CusF. Protein Expr Purif 2016; 121:61-5. [DOI: 10.1016/j.pep.2016.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 12/07/2015] [Accepted: 01/08/2016] [Indexed: 11/23/2022]
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27
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Recombinant protein production data after expression in the bacterium Escherichia coli. Data Brief 2016; 7:502-8. [PMID: 27014739 PMCID: PMC4792856 DOI: 10.1016/j.dib.2016.02.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 02/12/2016] [Accepted: 02/26/2016] [Indexed: 11/20/2022] Open
Abstract
Fusion proteins have become essential for the expression and purification of recombinant proteins in Escherichia coli. The metal-binding protein CusF has shown several features that make it an attractive fusion protein and affinity tag: "Expression and purification of recombinant proteins in Escherichia coli tagged with the metal-binding protein CusF" (Cantu-Bustos et al., 2016 [1]). Here we present accompanying data from protein expression experiments; we tested different protein tags, temperatures, expression times, cellular compartments, and concentrations of inducer in order to obtain soluble protein and low formation of inclusion bodies. Additionally, we present data from the purification of the green fluorescent protein (GFP) tagged with CusF, using Ag(I) metal affinity chromatography.
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