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Li Q, Wang T, Ye Y, Guan S, Cai B, Zhang S, Rong S. A temperature-induced chitosanase bacterial cell-surface display system for the efficient production of chitooligosaccharides. Biotechnol Lett 2021; 43:1625-1635. [PMID: 33993368 DOI: 10.1007/s10529-021-03139-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/23/2021] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To establish a temperature-induced chitosanase bacterial cell-surface display system to produce chitooligosaccharides (COSs) efficiently for industrial applications. RESULTS Temperature-inducible chitosanase CSN46A bacterial surface display systems containing one or two copies of ice nucleation protein (InaQ-N) as anchoring motifs were successfully constructed on the basis of Escherichia coli and named as InaQ-N-CSN46A (1 copy) and 2InaQ-N-CSN46A (2 copies). The specific enzyme activity of 2InaQ-N-CSN46A reached 761.34 ± 0.78 U/g cell dry weight, which was 45.6% higher than that of InaQ-N-CSN46A. However, few proteins were detected in the 2InaQ-N-CSN46A hydrolysis system. Therefore, 2InaQ-N-CSN46A had higher hydrolysis efficiency and stability than InaQ-N-CSN46A. Gel permeation chromatography revealed that under the optimum enzymatic hydrolysis temperature, the final products were mainly chitobiose and chitotriose. Chitopentaose accumulated (77.62%) when the hydrolysis temperature reached 60 °C. FTIR and NMR analysis demonstrated that the structures of the two hydrolysis products were consistent with those of COSs. CONCLUSIONS In this study, chitosanase was expressed on the surfaces of E. coli by increasing the induction temperature, and chitosan was hydrolysed directly without enzyme purification steps. This study provides a novel strategy for industrial COS production.
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Affiliation(s)
- Qianqian Li
- Department of Bioengineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, People's Republic of China
| | - Tuantuan Wang
- Department of Bioengineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, People's Republic of China
| | - Yangzhi Ye
- Department of Bioengineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, People's Republic of China
| | - Shimin Guan
- Department of Bioengineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, People's Republic of China
| | - Baoguo Cai
- Department of Bioengineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, People's Republic of China
| | - Shuo Zhang
- Department of Bioengineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, People's Republic of China
| | - Shaofeng Rong
- Department of Bioengineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, People's Republic of China.
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Ye M, Ye Y, Du Z, Chen G. Cell-surface engineering of yeasts for whole-cell biocatalysts. Bioprocess Biosyst Eng 2021; 44:1003-1019. [PMID: 33389168 DOI: 10.1007/s00449-020-02484-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/16/2020] [Indexed: 01/23/2023]
Abstract
Due to the unique advantages comparing with traditional free enzymes and chemical catalysis, whole-cell biocatalysts have been widely used to catalyze reactions effectively, simply and environment friendly. Cell-surface display technology provides a novel and effective approach for improved whole-cell biocatalysts expressing heterologous enzymes on the cell surface. They can overcome the substrate transport limitation of the intracellular expression and provide the enzymes with enhanced properties. Among all the host surface-displaying microorganisms, yeast is ideally suitable for constructing whole cell-surface-displaying biocatalyst, because of the large cell size, the generally regarded as safe (GRAS) status, and the perfect post-translational processing of secreted proteins. Yeast cell-surface display system has been a promising and powerful method for development of novel and improved engineered biocatalysts. In this review, the characterization and principles of yeast cell-surface display and the applications of yeast cell-surface display in engineered whole-cell biocatalysts as well as the improvement of the enzyme efficiency are summarized and discussed.
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Affiliation(s)
- Mengqi Ye
- Marine College, Shandong University, Weihai, 264209, China
| | - Yuqi Ye
- Marine College, Shandong University, Weihai, 264209, China
| | - Zongjun Du
- Marine College, Shandong University, Weihai, 264209, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Guanjun Chen
- Marine College, Shandong University, Weihai, 264209, China.
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China.
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Aktuganov GE, Melentiev AI, Varlamov VP. Biotechnological Aspects of the Enzymatic Preparation of Bioactive Chitooligosaccharides (Review). APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819040021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Nguyen HM, Pham ML, Stelzer EM, Plattner E, Grabherr R, Mathiesen G, Peterbauer CK, Haltrich D, Nguyen TH. Constitutive expression and cell-surface display of a bacterial β-mannanase in Lactobacillus plantarum. Microb Cell Fact 2019; 18:76. [PMID: 31023309 PMCID: PMC6482533 DOI: 10.1186/s12934-019-1124-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 04/19/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Lactic acid bacteria (LAB) are important microorganisms in the food and beverage industry. Due to their food-grade status and probiotic characteristics, several LAB are considered as safe and effective cell-factories for food-application purposes. In this present study, we aimed at constitutive expression of a mannanase from Bacillus licheniformis DSM13, which was subsequently displayed on the cell surface of Lactobacillus plantarum WCFS1, for use as whole-cell biocatalyst in oligosaccharide production. RESULTS Two strong constitutive promoters, Pgm and SlpA, from L. acidophilus NCFM and L. acidophilus ATCC4356, respectively, were used to replace the inducible promoter in the lactobacillal pSIP expression system for the construction of constitutive pSIP vectors. The mannanase-encoding gene (manB) was fused to the N-terminal lipoprotein anchor (Lp_1261) from L. plantarum and the resulting fusion protein was cloned into constitutive pSIP vectors and expressed in L. plantarum WCFS1. The localization of the protein on the bacterial cell surface was confirmed by flow cytometry and immunofluorescence microscopy. The mannanase activity and the reusability of the constructed L. plantarum displaying cells were evaluated. The highest mannanase activities on the surface of L. plantarum cells obtained under the control of the Pgm and SlpA promoters were 1200 and 3500 U/g dry cell weight, respectively, which were 2.6- and 7.8-fold higher compared to the activity obtained from inducible pSIP anchoring vectors. Surface-displayed mannanase was shown to be able to degrade galactomannan into manno-oligosaccharides (MOS). CONCLUSION This work demonstrated successful displaying of ManB on the cell surface of L. plantarum WCFS1 using constitutive promoter-based anchoring vectors for use in the production of manno-oligosaccharides, which are potentially prebiotic compounds with health-promoting effects. Our approach, where the enzyme of interest is displayed on the cell surface of a food-grade organism with the use of strong constitutive promoters, which continuously drive synthesis of the recombinant protein without the need to add an inducer or change the growth conditions of the host strain, should result in the availability of safe, stable food-grade biocatalysts.
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Affiliation(s)
- Hoang-Minh Nguyen
- Department of Biotechnology, The University of Danang-University of Science and Technology, 54 Nguyen Luong Bang, Danang, Vietnam
| | - Mai-Lan Pham
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Elena Maria Stelzer
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Esther Plattner
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Reingard Grabherr
- Department of Biotechnology, BOKU-University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Geir Mathiesen
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), N-1432, Ås, Norway
| | - Clemens K Peterbauer
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Dietmar Haltrich
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Thu-Ha Nguyen
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190, Vienna, Austria.
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Padkina MV, Sambuk EV. Prospects for the Application of Yeast Display in Biotechnology and Cell Biology (Review). APPL BIOCHEM MICRO+ 2018. [DOI: 10.1134/s0003683818040105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Biochemical and biotechnological trends in chitin, chitosan, and related enzymes produced by Paenibacillus IK-5 Strain. Int J Biol Macromol 2017; 104:1633-1640. [DOI: 10.1016/j.ijbiomac.2017.04.118] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 03/11/2017] [Accepted: 04/30/2017] [Indexed: 11/18/2022]
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Nguyen HM, Mathiesen G, Stelzer EM, Pham ML, Kuczkowska K, Mackenzie A, Agger JW, Eijsink VGH, Yamabhai M, Peterbauer CK, Haltrich D, Nguyen TH. Display of a β-mannanase and a chitosanase on the cell surface of Lactobacillus plantarum towards the development of whole-cell biocatalysts. Microb Cell Fact 2016; 15:169. [PMID: 27716231 PMCID: PMC5050953 DOI: 10.1186/s12934-016-0570-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 09/28/2016] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Lactobacillus plantarum is considered as a potential cell factory because of its GRAS (generally recognized as safe) status and long history of use in food applications. Its possible applications include in situ delivery of proteins to a host, based on its ability to persist at mucosal surfaces of the human intestine, and the production of food-related enzymes. By displaying different enzymes on the surface of L. plantarum cells these could be used as whole-cell biocatalysts for the production of oligosaccharides. In this present study, we aimed to express and display a mannanase and a chitosanase on the cell surface of L. plantarum. RESULTS ManB, a mannanase from Bacillus licheniformis DSM13, and CsnA, a chitosanase from Bacillus subtilis ATCC 23857 were fused to different anchoring motifs of L. plantarum for covalent attachment to the cell surface, either via an N-terminal lipoprotein anchor (Lp_1261) or a C-terminal cell wall anchor (Lp_2578), and the resulting fusion proteins were expressed in L. plantarum WCFS1. The localization of the recombinant proteins on the bacterial cell surface was confirmed by flow cytometry and immunofluorescence microscopy. The highest mannanase and chitosanase activities obtained for displaying L. plantarum cells were 890 U and 1360 U g dry cell weight, respectively. In reactions with chitosan and galactomannans, L. plantarum CsnA- and ManB-displaying cells produced chito- and manno-oligosaccharides, respectively, as analyzed by high performance anion exchange chromatography (HPAEC) and mass spectrometry (MS). Surface-displayed ManB is able to break down galactomannan (LBG) into smaller manno-oligosaccharides, which can support growth of L. plantarum. CONCLUSION This study shows that mannanolytic and chitinolytic enzymes can be anchored to the cell surface of L. plantarum in active forms. L. plantarum chitosanase- and mannanase-displaying cells should be of interest for the production of potentially 'prebiotic' oligosaccharides. This approach, with the enzyme of interest being displayed on the cell surface of a food-grade organism, may also be applied in production processes relevant for food industry.
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Affiliation(s)
- Hoang-Minh Nguyen
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
- BioToP the International Doctoral Programme on Biomolecular Technology of Proteins, Muthgasse 18, A-1190 Vienna, Austria
- Department of Biotechnology, DUT-Danang University of Technology, Nguyen Luong Bang, 54, Danang, Vietnam
| | - Geir Mathiesen
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432 Ås, Norway
| | - Elena Maria Stelzer
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Mai Lan Pham
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Katarzyna Kuczkowska
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432 Ås, Norway
| | - Alasdair Mackenzie
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432 Ås, Norway
| | - Jane W. Agger
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432 Ås, Norway
| | - Vincent G. H. Eijsink
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432 Ås, Norway
| | - Montarop Yamabhai
- Molecular Biotechnology Laboratory, School of Biotechnology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Clemens K. Peterbauer
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
- BioToP the International Doctoral Programme on Biomolecular Technology of Proteins, Muthgasse 18, A-1190 Vienna, Austria
| | - Dietmar Haltrich
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
- BioToP the International Doctoral Programme on Biomolecular Technology of Proteins, Muthgasse 18, A-1190 Vienna, Austria
| | - Thu-Ha Nguyen
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
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Abstract
Cell surface display of proteins/peptides has been established based on mechanisms of localizing proteins to the cell surface. In contrast to conventional intracellular and extracellular (secretion) expression systems, this method, generally called an arming technology, is particularly effective when using yeasts as a host, because the control of protein folding that is often required for the preparation of proteins can be natural. This technology can be employed for basic and applied research purposes. In this review, I describe various strategies for the construction of engineered yeasts and provide an outline of the diverse applications of this technology to industrial processes such as the production of biofuels and chemicals, as well as bioremediation and health-related processes. Furthermore, this technology is suitable for novel protein engineering and directed evolution through high-throughput screening, because proteins/peptides displayed on the cell surface can be directly analyzed using intact cells without concentration and purification. Functional proteins/peptides with improved or novel functions can be created using this beneficial, powerful, and promising technique.
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Affiliation(s)
- Mitsuyoshi Ueda
- a Division of Applied Life Sciences, Graduate School of Agriculture , Kyoto University , Sakyo-ku , Japan
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Arora R, Behera S, Sharma NK, Kumar S. Bioprospecting thermostable cellulosomes for efficient biofuel production from lignocellulosic biomass. BIORESOUR BIOPROCESS 2015. [DOI: 10.1186/s40643-015-0066-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Isogawa D, Morisaka H, Kuroda K, Kusaoke H, Kimoto H, Suye SI, Ueda M. Evaluation of chitosan-binding amino acid residues of chitosanase from Paenibacillus fukuinensis. Biosci Biotechnol Biochem 2014; 78:1177-82. [DOI: 10.1080/09168451.2014.917263] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Abstract
Chitosan oligosaccharides longer than a hexamer have higher bioactivity than polymer or shorter oligosaccharides, such as the monomer or dimer. In our previous work, we generated Paenibacillus fukuinensis chitosanase-displaying yeast using yeast cell surface displaying system and demonstrated the catalytic base. Here we investigated the specific function of putative four amino acid residues Trp159, Trp228, Tyr311, and Phe406 engaged in substrate binding. Using this system, we generated chitosanase mutants in which the four amino acid residues were substituted with Ala and the chitosanase activity assay and HPLC analysis were performed. Based on these results, we demonstrated that Trp159 and Phe406 were critical for hydrolyzing both polymer and oligosaccharide, and Trp228 and Tyr311 were especially important for binding to oligosaccharide, such as the chitosan-hexamer, not to the chitosan polymer. From the results, we suggested the possibility of the effective strategy for designing useful mutants that produce chitosan oligosaccharides holding higher bioactivity.
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Affiliation(s)
- Danya Isogawa
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Hironobu Morisaka
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Kouichi Kuroda
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Hideo Kusaoke
- Department of Environmental and Biotechnological Frontier Engineering, Fukui University of Technology, Fukui, Japan
| | - Hisashi Kimoto
- Faculty of Biotechnology, Department of Bioscience, Fukui Prefectural University, Fukui, Japan
| | - Shin-ichiro Suye
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui, Fukui, Japan
| | - Mitsuyoshi Ueda
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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Li X, Jin X, Lu X, Chu F, Shen J, Ma Y, Liu M, Zhu J. Construction and characterization of a thermostable whole-cell chitinolytic enzyme using yeast surface display. World J Microbiol Biotechnol 2014; 30:2577-85. [DOI: 10.1007/s11274-014-1681-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 05/28/2014] [Indexed: 11/28/2022]
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12
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Kuroda K, Ueda M. Arming Technology in Yeast-Novel Strategy for Whole-cell Biocatalyst and Protein Engineering. Biomolecules 2013; 3:632-50. [PMID: 24970185 PMCID: PMC4030959 DOI: 10.3390/biom3030632] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 08/28/2013] [Accepted: 09/02/2013] [Indexed: 11/30/2022] Open
Abstract
Cell surface display of proteins/peptides, in contrast to the conventional intracellular expression, has many attractive features. This arming technology is especially effective when yeasts are used as a host, because eukaryotic modifications that are often required for functional use can be added to the surface-displayed proteins/peptides. A part of various cell wall or plasma membrane proteins can be genetically fused to the proteins/peptides of interest to be displayed. This technology, leading to the generation of so-called "arming technology", can be employed for basic and applied research purposes. In this article, we describe various strategies for the construction of arming yeasts, and outline the diverse applications of this technology to industrial processes such as biofuel and chemical productions, pollutant removal, and health-related processes, including oral vaccines. In addition, arming technology is suitable for protein engineering and directed evolution through high-throughput screening that is made possible by the feature that proteins/peptides displayed on cell surface can be directly analyzed using intact cells without concentration and purification. Actually, novel proteins/peptides with improved or developed functions have been created, and development of diagnostic/therapeutic antibodies are likely to benefit from this powerful approach.
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Affiliation(s)
- Kouichi Kuroda
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Mitsuyoshi Ueda
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
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Recent developments in yeast cell surface display toward extended applications in biotechnology. Appl Microbiol Biotechnol 2012; 95:577-91. [DOI: 10.1007/s00253-012-4175-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 05/13/2012] [Accepted: 05/14/2012] [Indexed: 10/28/2022]
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Peng N, Xu W, Wang F, Hu J, Ma M, Hu Y, Zhao S, Liang Y, Ge X. Mitsuaria chitosanase with unrevealed important amino acid residues: characterization and enhanced production in Pichia pastoris. Appl Microbiol Biotechnol 2012; 97:171-9. [PMID: 22322871 DOI: 10.1007/s00253-012-3901-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 01/11/2012] [Accepted: 01/12/2012] [Indexed: 10/14/2022]
Abstract
A chitosan plate assay was employed to screen for chitosanase-producing bacterial strains and isolate 141 was found to exhibit high activity. Characterization of this isolate revealed that it belonged to Mitsuaria (designated as Mitsuaria sp. 141). The encoded chitosanase (choA) gene was then cloned by PCR and the deduced amino acid sequence showed 98% identity to a formerly described Mitsuaria chitosanitabida 3001 ChoA (McChoA). Surprisingly, the ChoA encoded by Mitsuaria sp. 141 (MsChoA) appeared to have a much higher optimum temperature compared to McChoA. Site-directed mutagenesis was then employed to generate five MschoA mutant genes encoding MsChoA K204Q, R216K, T222N, R216K/T222N, or K204Q/R216K/T222N. All the ChoA mutants exhibited a much lower specific activity and a lower optimum temperature. The results confirmed that the substitution of three non-conserved amino acids accounts for the major reduction of the enzyme activity in MsChoA. Furthermore, the MschoA gene was cloned for over-expression in Pichia pastoris after coding sequence optimization. One of the P. pastoris transformants with Mut(S) phenotype was found to produce 1,480.2 ± 340.9 U ChoA mL(-1) of cell culture by high-cell-density fermentation. This represents the highest yield of recombinant ChoA production that has ever been reported thus far. The recombinant P. pastoris strain should therefore be well suited for industrial-scale production of chitosanase.
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Affiliation(s)
- Nan Peng
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
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Cell surface engineering of yeast for applications in white biotechnology. Biotechnol Lett 2010; 33:1-9. [PMID: 20872167 DOI: 10.1007/s10529-010-0403-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Accepted: 08/31/2010] [Indexed: 10/19/2022]
Abstract
Cell surface engineering is a promising strategy for the molecular breeding of whole-cell biocatalysts. By using this strategy, yeasts can be constructed by the cell surface display of functional proteins; these yeasts are referred to as arming yeasts. Because reactions using arming yeasts as whole-cell biocatalysts occur on the cell surface, materials that cannot enter the cell can be used as reaction substrates. Numerous arming yeasts have therefore been constructed for a wide range of uses such as biofuel production, synthesis of valuable chemicals, adsorption or degradation of environmental pollutants, recovery of rare metal ions, and biosensors. Here, we review the science of yeast cell surface modification as well as current applications and future opportunities.
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Isogawa D, Fukuda T, Kuroda K, Kusaoke H, Kimoto H, Suye SI, Ueda M. Demonstration of catalytic proton acceptor of chitosanase from Paenibacillus fukuinensis by comprehensive analysis of mutant library. Appl Microbiol Biotechnol 2009; 85:95-104. [DOI: 10.1007/s00253-009-2041-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2009] [Revised: 05/09/2009] [Accepted: 05/10/2009] [Indexed: 10/20/2022]
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Pscheidt B, Glieder A. Yeast cell factories for fine chemical and API production. Microb Cell Fact 2008; 7:25. [PMID: 18684335 PMCID: PMC2628649 DOI: 10.1186/1475-2859-7-25] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2008] [Accepted: 08/07/2008] [Indexed: 12/25/2022] Open
Abstract
This review gives an overview of different yeast strains and enzyme classes involved in yeast whole-cell biotransformations. A focus was put on the synthesis of compounds for fine chemical and API (= active pharmaceutical ingredient) production employing single or only few-step enzymatic reactions. Accounting for recent success stories in metabolic engineering, the construction and use of synthetic pathways was also highlighted. Examples from academia and industry and advances in the field of designed yeast strain construction demonstrate the broad significance of yeast whole-cell applications. In addition to Saccharomyces cerevisiae, alternative yeast whole-cell biocatalysts are discussed such as Candida sp., Cryptococcus sp., Geotrichum sp., Issatchenkia sp., Kloeckera sp., Kluyveromyces sp., Pichia sp. (including Hansenula polymorpha = P. angusta), Rhodotorula sp., Rhodosporidium sp., alternative Saccharomyces sp., Schizosaccharomyces pombe, Torulopsis sp., Trichosporon sp., Trigonopsis variabilis, Yarrowia lipolytica and Zygosaccharomyces rouxii.
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Affiliation(s)
- Beate Pscheidt
- Research Centre Applied Biocatalysis GmbH, Petersgasse 14/3, 8010 Graz, Austria.
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