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André Y, Richard E, Leroux M, Jeacomine I, Bayma E, Armand S, Priem B. Production of unsulfated chondroitin and associated chondro-oligosaccharides in recombinant Escherichia coli. Carbohydr Res 2024; 544:109243. [PMID: 39182394 DOI: 10.1016/j.carres.2024.109243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 07/02/2024] [Accepted: 08/13/2024] [Indexed: 08/27/2024]
Abstract
We designed metabolically engineered non-pathogenic strains of Escherichia coli to produce unsulfated chondroitin with and without chondroitin lyase to produce the chondroitin polymer or its related oligosaccharides. Chondroitin was synthesized using chondroitin synthase KfoC and chondroitin was degraded using Pl35, a chondroitin lyase from Pedobacter heparinus. Pl35 behaved as a true endo-enzyme generating a large panel of oligosaccharides ranging from trimers to 18-mers instead of the di- and tetramers obtained with most chondroitin lyases. Two series of oligosaccharides were characterized, sharing an unsaturated uronic acid (4-deoxy-α-L-threo-hex-4-enepyranosyluronic acid, △UA) residue at their non-reducing end. The major "even-numbered" series was characterized by a terminal reducing N-acetylgalactosaminyl residue. The minor "odd-numbered" series oligosaccharides carried a terminal reducing glucuronic acid residue instead. Cultures were conducted in fed-batch conditions, and led to the production of up to 10 g L-1 chondroitin or chondroitin oligosaccharides. All products were purified and fully characterized using NMR and mass spectrometry analyses. This is the first report of the microbial production of large chondro-oligosaccharides.
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Affiliation(s)
- Yanna André
- Centre de Recherche sur Les Macromolécules Végétales, Groupe Chimie et Biotechnologie des Oligosaccharides, 601 rue de La Chimie, BP 53X, 38041, Grenoble, Cedex 09, France
| | - Emeline Richard
- Centre de Recherche sur Les Macromolécules Végétales, Groupe Chimie et Biotechnologie des Oligosaccharides, 601 rue de La Chimie, BP 53X, 38041, Grenoble, Cedex 09, France
| | - Mélanie Leroux
- Centre de Recherche sur Les Macromolécules Végétales, Groupe Chimie et Biotechnologie des Oligosaccharides, 601 rue de La Chimie, BP 53X, 38041, Grenoble, Cedex 09, France; HTL Biotechnology, 7 rue Alfred Kastler, 35133, Javené, France
| | - Isabelle Jeacomine
- Centre de Recherche sur Les Macromolécules Végétales, Groupe Chimie et Biotechnologie des Oligosaccharides, 601 rue de La Chimie, BP 53X, 38041, Grenoble, Cedex 09, France
| | - Eric Bayma
- Centre de Recherche sur Les Macromolécules Végétales, Groupe Chimie et Biotechnologie des Oligosaccharides, 601 rue de La Chimie, BP 53X, 38041, Grenoble, Cedex 09, France
| | - Sylvie Armand
- Centre de Recherche sur Les Macromolécules Végétales, Groupe Chimie et Biotechnologie des Oligosaccharides, 601 rue de La Chimie, BP 53X, 38041, Grenoble, Cedex 09, France
| | - Bernard Priem
- Centre de Recherche sur Les Macromolécules Végétales, Groupe Chimie et Biotechnologie des Oligosaccharides, 601 rue de La Chimie, BP 53X, 38041, Grenoble, Cedex 09, France.
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Takashima M, Suzuki K, Mochizuki H, Uemura S, Inokuchi JI, Eguchi T. Expression of highly active chondroitin 4-O-sulfotransferase-1 in Escherichia coli by a trigger factor fusion protein expression system. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Tsuji T, Yoshinaga S, Takeda M, Sato T, Sonoda A, Ishida N, Yunoki K, Toda E, Terashima Y, Matsushima K, Terasawa H. Rational Design of Monodispersed Mutants of Proteins by Identifying Aggregation Contact Sites Using Solubilizing Agents. Biochemistry 2020; 59:3639-3649. [PMID: 32929969 DOI: 10.1021/acs.biochem.0c00414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Suppression of protein aggregation is a subject of growing importance in the treatment of protein aggregation diseases, an urgent worldwide human health problem, and the production of therapeutic proteins, such as antibody drugs. We previously reported a method to identify compounds that suppress aggregation, based on screening using multiple terminal deletion mutants. We now present a method to determine the aggregation contact sites of proteins, using such solubilizing compounds, to design monodispersed mutants. We applied this strategy to the chemokine receptor-binding domain (CRBD) of FROUNT, which binds to the membrane-proximal C-terminal intracellular region of CCR2. Initially, the backbone NMR signals were assigned to a certain extent by available methods, and the putative locations of five α-helices were identified. Based on NMR chemical shift perturbations upon varying the protein concentrations, the first and third helices were found to contain the aggregation contact sites. The two helices are amphiphilic, and based on an NMR titration with 1,6-hexanediol, a CRBD solubilizing compound, the contact sites were identified as the hydrophobic patches located on the hydrophilic sides of the two helices. Subsequently, we designed multiple mutants targeting amino acid residues on the contact sites. Based on their NMR spectra, a doubly mutated CRBD (L538E/P612S) was selected from the designed mutants, and its monodispersed nature was confirmed by other biophysical methods. We then assessed the CCR2-binding activities of the mutants. Our method is useful for the protein structural analyses, the treatment of protein aggregation diseases, and the improvement of therapeutic proteins.
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Affiliation(s)
- Tatsuichiro Tsuji
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Chuo-ku, Kumamoto 862-0973, Japan
| | - Sosuke Yoshinaga
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Chuo-ku, Kumamoto 862-0973, Japan
| | - Mitsuhiro Takeda
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Chuo-ku, Kumamoto 862-0973, Japan
| | - Takafumi Sato
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Chuo-ku, Kumamoto 862-0973, Japan
| | - Akihiro Sonoda
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Chuo-ku, Kumamoto 862-0973, Japan
| | - Norihito Ishida
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Chuo-ku, Kumamoto 862-0973, Japan
| | - Kaori Yunoki
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Chuo-ku, Kumamoto 862-0973, Japan
| | - Etsuko Toda
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Chiba 278-0022, Japan.,Department of Analytic Human Pathology, Nippon Medical School, Bunkyo-ku, Tokyo 113-8602, Japan
| | - Yuya Terashima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Chiba 278-0022, Japan
| | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Chiba 278-0022, Japan
| | - Hiroaki Terasawa
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Chuo-ku, Kumamoto 862-0973, Japan
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Terashima Y, Toda E, Itakura M, Otsuji M, Yoshinaga S, Okumura K, Shand FHW, Komohara Y, Takeda M, Kokubo K, Chen MC, Yokoi S, Rokutan H, Kofuku Y, Ohnishi K, Ohira M, Iizasa T, Nakano H, Okabe T, Kojima H, Shimizu A, Kanegasaki S, Zhang MR, Shimada I, Nagase H, Terasawa H, Matsushima K. Targeting FROUNT with disulfiram suppresses macrophage accumulation and its tumor-promoting properties. Nat Commun 2020; 11:609. [PMID: 32001710 PMCID: PMC6992764 DOI: 10.1038/s41467-020-14338-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 12/20/2019] [Indexed: 12/15/2022] Open
Abstract
Tumor-associated macrophages affect tumor progression and resistance to immune checkpoint therapy. Here, we identify the chemokine signal regulator FROUNT as a target to control tumor-associated macrophages. The low level FROUNT expression in patients with cancer correlates with better clinical outcomes. Frount-deficiency markedly reduces tumor progression and decreases macrophage tumor-promoting activity. FROUNT is highly expressed in macrophages, and its myeloid-specific deletion impairs tumor growth. Further, the anti-alcoholism drug disulfiram (DSF) acts as a potent inhibitor of FROUNT. DSF interferes with FROUNT-chemokine receptor interactions via direct binding to a specific site of the chemokine receptor-binding domain of FROUNT, leading to inhibition of macrophage responses. DSF monotherapy reduces tumor progression and decreases macrophage tumor-promoting activity, as seen in the case of Frount-deficiency. Moreover, co-treatment with DSF and an immune checkpoint antibody synergistically inhibits tumor growth. Thus, inhibition of FROUNT by DSF represents a promising strategy for macrophage-targeted cancer therapy. The cytoplasmic protein FROUNT can bind to chemokine receptors and enhance chemokine signalling. Here, the authors show that inhibiting FROUNT in macrophages either by knockdown of the gene or using the anti-alcoholism drug disulfiram, results in a reduction in tumour growth.
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Affiliation(s)
- Yuya Terashima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan. .,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan. .,Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.
| | - Etsuko Toda
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Department of Analytic Human Pathology, Nippon Medical School, Tokyo, 113-8602, Japan.,Department of Analytic Human Pathology, Nippon Medical School, Tokyo, 113-8602, Japan
| | - Meiji Itakura
- Department of Thoracic Disease, Chiba Cancer Center, Chiba, 260-8717, Japan.,Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan.,Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan
| | - Mikiya Otsuji
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Department of Anesthesiology, Tokyo Teishin Hospital, Tokyo, 102-8798, Japan.,Department of Anesthesiology, Tokyo Teishin Hospital, Tokyo, 102-8798, Japan
| | - Sosuke Yoshinaga
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
| | | | - Francis H W Shand
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Yoshihiro Komohara
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, 860-8556, Japan
| | - Mitsuhiro Takeda
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
| | - Kana Kokubo
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan
| | - Ming-Chen Chen
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan
| | - Sana Yokoi
- Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan
| | - Hirofumi Rokutan
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Yutaka Kofuku
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Koji Ohnishi
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, 860-8556, Japan
| | - Miki Ohira
- Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan
| | - Toshihiko Iizasa
- Department of Thoracic Disease, Chiba Cancer Center, Chiba, 260-8717, Japan
| | - Hirofumi Nakano
- Drug Discovery Initiative, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Takayoshi Okabe
- Drug Discovery Initiative, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Hirotatsu Kojima
- Drug Discovery Initiative, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Akira Shimizu
- Department of Analytic Human Pathology, Nippon Medical School, Tokyo, 113-8602, Japan
| | - Shiro Kanegasaki
- Research Institute, National Center for Global Health and Medicine, Tokyo, 162-8655, Japan
| | - Ming-Rong Zhang
- Department of Radiopharmaceutics Development, National Institutes for Quantum and Radiological Science and Technology, Chiba, 263-8555, Japan
| | - Ichio Shimada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Hiroki Nagase
- Chiba Cancer Center Research Institute, Chiba, 260-8717, Japan
| | - Hiroaki Terasawa
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
| | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan.,Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Chiba, 278-0022, Japan
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Yoshinaga S, Ishida N, Tsuji T, Sonoda A, Yunoki K, Takeda M, Toda E, Terashima Y, Matsushima K, Terasawa H. 1H, 13C and 15N resonance assignments for a chemokine receptor-binding domain of FROUNT, a cytoplasmic regulator of chemotaxis. BIOMOLECULAR NMR ASSIGNMENTS 2018; 12:259-262. [PMID: 29594928 DOI: 10.1007/s12104-018-9819-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 03/26/2018] [Indexed: 06/08/2023]
Abstract
FROUNT is a cytoplasmic protein that interacts with the membrane-proximal C-terminal regions (Pro-Cs) of the CCR2 and CCR5 chemokine receptors. The interactions between FROUNT and the chemokine receptors play an important role in the migration of inflammatory immune cells. Therefore, FROUNT is a potential drug target for inflammatory diseases. However, the structural basis of the interactions between FROUNT and the chemokine receptors remains to be elucidated. We previously identified the C-terminal region (residues 532-656) of FROUNT as the structural domain responsible for the Pro-C binding, referred to as the chemokine receptor-binding domain (CRBD), and then constructed its mutant, bearing L538E/P612S mutations, with improved NMR spectral quality, referred to as CRBD_LEPS. We now report the main-chain and side-chain 1H, 13C, and 15N resonance assignments of CRBD_LEPS. The NMR signals of CRBD_LEPS were well dispersed and their intensities were uniform on the 1H-15N HSQC spectrum, and thus almost all of the main-chain and side-chain resonances were assigned. This assignment information provides the foundation for NMR studies of the three-dimensional structure of CRBD_LEPS in solution and its interactions with chemokine receptors.
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Affiliation(s)
- Sosuke Yoshinaga
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Norihito Ishida
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Tatsuichiro Tsuji
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Akihiro Sonoda
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Kaori Yunoki
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Mitsuhiro Takeda
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Etsuko Toda
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Yuya Terashima
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kouji Matsushima
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hiroaki Terasawa
- Department of Structural BioImaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan.
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6
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Liu MQ, Huo WK, Dai X, Dang YH. Preparation of low-molecular-weight citrus pectin by recombinant Bacillus subtilis pectate lyase and promotion of growth of Bifidobacterium longum. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.01.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Yunoki K, Yoshinaga S, Takeda M, Nagano R, Tsuchiya Y, Sonoda A, Tsuji T, Hirakane M, Toda E, Terashima Y, Matsushima K, Terasawa H. Efficient identification of compounds suppressing protein precipitation via solvent screening using serial deletion mutants of the target protein. Genes Cells 2018; 23:70-79. [DOI: 10.1111/gtc.12554] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 11/26/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Kaori Yunoki
- Department of Structural BioImaging Faculty of Life Sciences Kumamoto University Kumamoto Japan
| | - Sosuke Yoshinaga
- Department of Structural BioImaging Faculty of Life Sciences Kumamoto University Kumamoto Japan
| | - Mitsuhiro Takeda
- Department of Structural BioImaging Faculty of Life Sciences Kumamoto University Kumamoto Japan
| | - Ryohei Nagano
- Department of Structural BioImaging Faculty of Life Sciences Kumamoto University Kumamoto Japan
| | - Yusuke Tsuchiya
- Department of Structural BioImaging Faculty of Life Sciences Kumamoto University Kumamoto Japan
| | - Akihiro Sonoda
- Department of Structural BioImaging Faculty of Life Sciences Kumamoto University Kumamoto Japan
| | - Tatsuichiro Tsuji
- Department of Structural BioImaging Faculty of Life Sciences Kumamoto University Kumamoto Japan
| | - Makoto Hirakane
- Department of Structural BioImaging Faculty of Life Sciences Kumamoto University Kumamoto Japan
| | - Etsuko Toda
- Department of Molecular Preventive Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Yuya Terashima
- Department of Molecular Preventive Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Kouji Matsushima
- Department of Molecular Preventive Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Hiroaki Terasawa
- Department of Structural BioImaging Faculty of Life Sciences Kumamoto University Kumamoto Japan
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Bjerga GEK, Williamson AK. Cold shock induction of recombinant Arctic environmental genes. BMC Biotechnol 2015; 15:78. [PMID: 26286037 PMCID: PMC4544801 DOI: 10.1186/s12896-015-0185-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 07/24/2015] [Indexed: 11/16/2022] Open
Abstract
Background Heterologous expression of psychrophilic enzymes in E. coli is particularly challenging due to their intrinsic instability. The low stability is regarded as a consequence of adaptation that allow them to function at low temperatures. Recombinant production presents a significant barrier to their exploitation for commercial applications in industry. Methods As part of an enzyme discovery project we have investigated the utility of a cold-shock inducible promoter for low-temperature expression of five diverse genes derived from the metagenomes of marine Arctic sediments. After evaluation of their production, we further optimized for soluble production by building a vector suite from which the environmental genes could be expressed as fusions with solubility tags. Results We found that the low-temperature optimized system produced high expression levels for all putatively cold-active proteins, as well as reducing host toxicity for several candidates. As a proof of concept, activity assays with one of the candidates, a putative chitinase, showed that functional protein was obtained using the low-temperature optimized vector suite. Conclusions We conclude that a cold-shock inducible system is advantageous for the heterologous expression of psychrophilic proteins, and may also be useful for expression of toxic mesophilic and thermophilic proteins where properties of the proteins are deleterious to the host cell growth. Electronic supplementary material The online version of this article (doi:10.1186/s12896-015-0185-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Gro Elin Kjæreng Bjerga
- Norstruct, Department of Chemistry, Faculty of Science and Technology, University of Tromsø, N-9037, Tromsø, Norway. .,Centre for Applied Biotechnology, Uni Research AS, Thormøhlensgt. 55, N-5008, Bergen, Norway.
| | - Adele Kim Williamson
- Norstruct, Department of Chemistry, Faculty of Science and Technology, University of Tromsø, N-9037, Tromsø, Norway.
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Esaki K, Yoshinaga S, Tsuji T, Toda E, Terashima Y, Saitoh T, Kohda D, Kohno T, Osawa M, Ueda T, Shimada I, Matsushima K, Terasawa H. Structural basis for the binding of the membrane-proximal C-terminal region of chemokine receptor CCR2 with the cytosolic regulator FROUNT. FEBS J 2014; 281:5552-66. [DOI: 10.1111/febs.13096] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 09/09/2014] [Accepted: 09/30/2014] [Indexed: 12/14/2022]
Affiliation(s)
- Kaori Esaki
- Department of Structural BioImaging; Faculty of Life Sciences; Kumamoto University; Kumamoto Japan
| | - Sosuke Yoshinaga
- Department of Structural BioImaging; Faculty of Life Sciences; Kumamoto University; Kumamoto Japan
| | - Tatsuichiro Tsuji
- Department of Structural BioImaging; Faculty of Life Sciences; Kumamoto University; Kumamoto Japan
| | - Etsuko Toda
- Department of Molecular Preventive Medicine; Graduate School of Medicine; The University of Tokyo; Tokyo Japan
| | - Yuya Terashima
- Department of Molecular Preventive Medicine; Graduate School of Medicine; The University of Tokyo; Tokyo Japan
| | - Takashi Saitoh
- Division of Structural Biology; Medical Institute of Bioregulation; Kyushu University; Fukuoka Japan
| | - Daisuke Kohda
- Division of Structural Biology; Medical Institute of Bioregulation; Kyushu University; Fukuoka Japan
| | - Toshiyuki Kohno
- Department of Biochemistry; Kitasato University School of Medicine; Kanagawa Japan
| | - Masanori Osawa
- Division of Physical Chemistry; Graduate School of Pharmaceutical Sciences; The University of Tokyo; Tokyo Japan
| | - Takumi Ueda
- Division of Physical Chemistry; Graduate School of Pharmaceutical Sciences; The University of Tokyo; Tokyo Japan
| | - Ichio Shimada
- Division of Physical Chemistry; Graduate School of Pharmaceutical Sciences; The University of Tokyo; Tokyo Japan
| | - Kouji Matsushima
- Department of Molecular Preventive Medicine; Graduate School of Medicine; The University of Tokyo; Tokyo Japan
| | - Hiroaki Terasawa
- Department of Structural BioImaging; Faculty of Life Sciences; Kumamoto University; Kumamoto Japan
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10
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Identification of a binding element for the cytoplasmic regulator FROUNT in the membrane-proximal C-terminal region of chemokine receptors CCR2 and CCR5. Biochem J 2014; 457:313-22. [PMID: 24128342 DOI: 10.1042/bj20130827] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chemokine receptors mediate the migration of leucocytes during inflammation. The cytoplasmic protein FROUNT binds to chemokine receptors CCR2 [chemokine (C-C motif) receptor 2] and CCR5, and amplifies chemotactic signals in leucocytes. Although the interaction between FROUNT and chemokine receptors is important for accurate chemotaxis, the interaction mechanism has not been elucidated. In the present study we identified a 16-amino-acid sequence responsible for high-affinity binding of FROUNT at the membrane-proximal C-terminal intracellular region of CCR2 (CCR2 Pro-C) by yeast two-hybrid analysis. Synthesized peptides corresponding to the CCR2 Pro-C sequence directly interacted with FROUNT in vitro. CCR2 Pro-C was predicted to form an amphipathic helix structure. Residues on the hydrophobic side are completely conserved among FROUNT-binding receptors, suggesting that the hydrophobic side is the responsible element for FROUNT binding. The L316T mutation to the hydrophobic side of the predicted helix decreased the affinity for FROUNT. Co-immunoprecipitation assays revealed that the CCR2 L316T mutation diminished the interaction between FROUNT and full-length CCR2 in cells. Furthermore, this mutation impaired the ability of the receptor to mediate chemotaxis. These findings provide the first description of the functional binding element in helix 8 of CCR2 for the cytosolic regulator FROUNT that mediates chemotactic signalling.
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11
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Basters A, Ketscher L, Deuerling E, Arkona C, Rademann J, Knobeloch KP, Fritz G. High yield expression of catalytically active USP18 (UBP43) using a Trigger Factor fusion system. BMC Biotechnol 2012; 12:56. [PMID: 22916876 PMCID: PMC3478164 DOI: 10.1186/1472-6750-12-56] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Accepted: 07/18/2012] [Indexed: 12/18/2022] Open
Abstract
Background Covalent linkage of the ubiquitin-like protein ISG15 interferes with viral infection and USP18 is the major protease which specifically removes ISG15 from target proteins. Thus, boosting ISG15 modification by protease inhibition of USP18 might represent a new strategy to interfere with viral replication. However, so far no heterologous expression system was available to yield sufficient amounts of catalytically active protein for high-throughput based inhibitor screens. Results High-level heterologous expression of USP18 was achieved by applying a chaperone-based fusion system in E. coli. Pure protein was obtained in a single-step on IMAC via a His6-tag. The USP18 fusion protein exhibited enzymatic activity towards cell derived ISG15 conjugated substrates and efficiently hydrolyzed ISG15-AMC. Specificity towards ISG15 was shown by covalent adduct formation with ISG15 vinyl sulfone but not with ubiquitin vinyl sulfone. Conclusion The results presented here show that a chaperone fusion system can provide high yields of proteins that are difficult to express. The USP18 protein obtained here is suited to setup high-throughput small molecule inhibitor screens and forms the basis for detailed biochemical and structural characterization.
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Affiliation(s)
- Anja Basters
- Department of Neuropathology, University of Freiburg, Freiburg, Germany
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