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Urbániková Ľ, Janeček Š. Trehalose synthases from the subfamily GH13_16 involved in α-glucan biosynthesis - a focus on their maltokinase domain. Int J Biol Macromol 2024; 268:131680. [PMID: 38641282 DOI: 10.1016/j.ijbiomac.2024.131680] [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: 02/21/2024] [Revised: 04/16/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
The subfamily GH13_16 trehalose synthase (TreS) converts maltose to trehalose and vice versa. Typically, it consists of three domains, but it may contain a C-terminal extension exhibiting clear sequence features of a maltokinase (MaK). The present in silico study was focused on collection of naturally fused TreS-MaKs and their subsequent detailed bioinformatics analysis. Hence a set of total 3354 unique sequences was compared consisting of 1900 single TreSs, 1426 fused TreS-MaKs and 28 single MaKs. Fused TreS-MaKs were divided into five groups, namely with a standard MaK, with mutations in the maltose-binding site, of the catalytic nucleophile, of the general acid/base and of both catalytic residues. Sequence logos bearing the best conserved sequence regions were prepared for both TreSs and MaKs in an effort to find unique sequence features. In addition, linkers connecting the TreS and MaK parts in the fused enzymes were analysed. This analysis revealed that MaKs in fused enzymes have an extended N-terminal regions compared to single MaKs. Finally, the evolutionary relationships were demonstrated by phylogenetic trees of TreS parts from single TreSs and fused TreS-MaKs from the same organism as well as of single TreSs existing in multiple isoforms in the same organism.
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Affiliation(s)
- Ľubica Urbániková
- Laboratory of Protein Evolution, Institute of Molecular Biology, Slovak Academy of Sciences, SK-84551 Bratislava, Slovakia
| | - Štefan Janeček
- Laboratory of Protein Evolution, Institute of Molecular Biology, Slovak Academy of Sciences, SK-84551 Bratislava, Slovakia; Institute of Biology and Biotechnology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, SK-91701 Trnava, Slovakia.
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Trakarnpaiboon S, Bunterngsook B, Lekakarn H, Prongjit D, Champreda V. Characterization of cold-active trehalose synthase from Pseudarthrobacter sp. for trehalose bioproduction. BIORESOUR BIOPROCESS 2023; 10:65. [PMID: 38647947 PMCID: PMC10992939 DOI: 10.1186/s40643-023-00681-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 08/29/2023] [Indexed: 04/25/2024] Open
Abstract
Trehalose is a functional sugar that has numerous applications in food, cosmetic, and pharmaceutical products. Production of trehalose from maltose via a single-step enzymatic catalysis using trehalose synthase (TreS) is a promising method compared with the conventional two-step process due to its simplicity with lower formation of byproducts. In this study, a cold-active trehalose synthase (PaTreS) from Pseudarthrobacter sp. TBRC 2005 was heterologously expressed and characterized. PaTreS showed the maximum activity at 20 °C and maintained 87% and 59% of its activity at 10 °C and 4 °C, respectively. The enzyme had remarkable stability over a board pH range of 7.0-9.0 with the highest activity at pH 7.0. The activity was enhanced by divalent metal ions (Mg2+, Mn2+ and Ca2+). Conversion of high-concentration maltose syrup (100-300 g/L) using PaTreS yielded 71.7-225.5 g/L trehalose, with 4.5-16.4 g/L glucose as a byproduct within 16 h. The work demonstrated the potential of PaTreS as a promising biocatalyst for the development of low-temperature trehalose production, with the advantages of reduced risk of microbial contamination with low generation of byproduct.
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Affiliation(s)
- Srisakul Trakarnpaiboon
- Enzyme Technology Research Team, Biorefinery Technology and Bioproduct Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueang, Khlong Luang, Pathumthani, 12120, Thailand
| | - Benjarat Bunterngsook
- Enzyme Technology Research Team, Biorefinery Technology and Bioproduct Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueang, Khlong Luang, Pathumthani, 12120, Thailand
| | - Hataikarn Lekakarn
- Department of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Khlong Nueang, Khlong Luang, Pathumthani, 12120, Thailand
| | - Daran Prongjit
- Department of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Khlong Nueang, Khlong Luang, Pathumthani, 12120, Thailand
| | - Verawat Champreda
- Enzyme Technology Research Team, Biorefinery Technology and Bioproduct Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueang, Khlong Luang, Pathumthani, 12120, Thailand.
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Trakarnpaiboon S, Champreda V. Integrated Whole-Cell Biocatalysis for Trehalose Production from Maltose Using Permeabilized Pseudomonas monteilii Cells and Bioremoval of Byproduct. J Microbiol Biotechnol 2022; 32:1054-1063. [PMID: 35791071 PMCID: PMC9628947 DOI: 10.4014/jmb.2202.02028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/09/2022] [Accepted: 05/13/2022] [Indexed: 12/15/2022]
Abstract
Trehalose is a non-conventional sugar with potent applications in the food, healthcare and biopharma industries. In this study, trehalose was synthesized from maltose using whole-cell Pseudomonas monteilii TBRC 1196 producing trehalose synthase (TreS) as the biocatalyst. The reaction condition was optimized using 1% Triton X-100 permeabilized cells. According to our central composite design (CCD) experiment, the optimal process was achieved at 35°C and pH 8.0 for 24 h, resulting in the maximum trehalose yield of 51.60 g/g after 12 h using an initial cell loading of 94 g/l. Scale-up production in a lab-scale bioreactor led to the final trehalose concentration of 51.91 g/l with a yield of 51.60 g/g and productivity of 4.37 g/l/h together with 8.24 g/l glucose as a byproduct. A one-pot process integrating trehalose production and byproduct bioremoval showed 53.35% trehalose yield from 107.4 g/l after 15 h by permeabilized P. moteilii cells. The residual maltose and glucose were subsequently removed by Saccharomyces cerevisiae TBRC 12153, resulting in trehalose recovery of 99.23% with 24.85 g/l ethanol obtained as a co-product. The present work provides an integrated alternative process for trehalose production from maltose syrup in bio-industry.
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Affiliation(s)
- Srisakul Trakarnpaiboon
- Enzyme Technology Research Team, Biorefinery and Bioproduct Technology Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Rd., Klong Luang District, Pathumthani 12120, Thailand
| | - Verawat Champreda
- Enzyme Technology Research Team, Biorefinery and Bioproduct Technology Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Rd., Klong Luang District, Pathumthani 12120, Thailand,Corresponding author Phone: +66-2564-6700 Fax: +66-2564-6707 E-mail:
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4
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Abstract
A novel putative trehalose synthase gene (treM) was identified from an extreme temperature thermal spring. The gene was expressed in Escherichia coli followed by purification of the protein (TreM). TreM exhibited the pH optima of 7.0 for trehalose and trehalulose production, although it was functional and stable in the pH range of 5.0 to 8.0. Temperature activity profiling revealed that TreM can catalyze trehalose biosynthesis in a wide range of temperatures, from 5°C to 80°C. The optimum activity for trehalose and trehalulose biosynthesis was observed at 45°C and 50°C, respectively. A catalytic reaction performed at the low temperature of 5°C yielded trehalose with significantly reduced by-product (glucose) production in the reaction. TreM displayed remarkable thermal stability at optimum temperatures, with only about 20% loss in the activity after heat (50°C) exposure for 24 h. The maximum bioconversion yield of 74% trehalose (at 5°C) and 90% trehalulose (at 50°C) was obtained from 100 mM maltose and 70 mM sucrose, respectively. TreM was demonstrated to catalyze trehalulose biosynthesis utilizing the low-cost feedstock jaggery, cane molasses, muscovado, and table sugar. IMPORTANCE Trehalose is a rare sugar of high importance in biological research, with its property to stabilize cell membrane and proteins and protect the organism from drought. It is instrumental in the cryopreservation of human cells, e.g., sperm and blood stem cells. It is also very useful in the food industry, especially in the preparation of frozen food products. Trehalose synthase is a glycosyl hydrolase 13 (GH13) family enzyme that has been reported from about 22 bacterial species so far. Of these enzymes, to date, only two have been demonstrated to catalyze the biosynthesis of both trehalose and trehalulose. We have investigated the metagenomic data of an extreme temperature thermal spring to discover a novel gene that encodes a trehalose synthase (TreM) with higher stability and dual transglycosylation activities of trehalose and trehalulose biosynthesis. This enzyme is capable of catalyzing the transformation of maltose to trehalose and sucrose to trehalulose in a wide pH and temperature range. The present investigation endorses the thermal aquatic habitat as a promising genetic resource for the biocatalysts with high potential in producing high-value rare sugars.
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Trakarnpaiboon S, Bunterngsook B, Wansuksriand R, Champreda V. Screening, Cloning, Expression and Characterization of New Alkaline Trehalose Synthase from Pseudomonas monteilii and Its Application for Trehalose Production. J Microbiol Biotechnol 2021; 31:1455-1464. [PMID: 34409951 PMCID: PMC9705850 DOI: 10.4014/jmb.2106.06032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/17/2021] [Accepted: 08/19/2021] [Indexed: 12/15/2022]
Abstract
Trehalose is a non-reducing disaccharide in increasing demand for applications in food, nutraceutical, and pharmaceutical industries. Single-step trehalose production by trehalose synthase (TreS) using maltose as a starting material is a promising alternative process for industrial application due to its simplicity and cost advantage. Pseudomonas monteilii TBRC 1196 was identified using the developed screening method as a potent strain for TreS production. The TreS gene from P. monteilii TBRC 1196 was first cloned and expressed in Escherichia coli. Purified recombinant trehalose synthase (PmTreS) had a molecular weight of 76 kDa and showed optimal pH and temperature at 9.0 and 40°C, respectively. The enzyme exhibited >90% residual activity under mesophilic condition under a broad pH range of 7-10 for 6 h. Maximum trehalose yield by PmTreS was 68.1% with low yield of glucose (4%) as a byproduct under optimal conditions, equivalent to productivity of 4.5 g/l/h using enzyme loading of 2 mg/g substrate and high concentration maltose solution (100 g/l) in a lab-scale bioreactor. The enzyme represents a potent biocatalyst for energy-saving trehalose production with potential for inhibiting microbial contamination by alkaline condition.
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Affiliation(s)
- Srisakul Trakarnpaiboon
- Enzyme Technology Research Team, Biorefinery and Bioproduct Technology Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin RD., Klong Luang District, Pathumthani 12120, Thailand
| | - Benjarat Bunterngsook
- Enzyme Technology Research Team, Biorefinery and Bioproduct Technology Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin RD., Klong Luang District, Pathumthani 12120, Thailand
| | - Rungtiva Wansuksriand
- Cassava and Starch Technology Research Team, Functional Ingredients and Food Innovation Research Group, National Center for Genetic Engineering and Biotechnology, Bangkok 10900, Thailand
| | - Verawat Champreda
- Enzyme Technology Research Team, Biorefinery and Bioproduct Technology Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin RD., Klong Luang District, Pathumthani 12120, Thailand,Corresponding author Phone: +66 2564 6700 x 3446 Fax: +66 2564 6707 E-mail:
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Nnolim NE, Udenigwe CC, Okoh AI, Nwodo UU. Microbial Keratinase: Next Generation Green Catalyst and Prospective Applications. Front Microbiol 2020; 11:580164. [PMID: 33391200 PMCID: PMC7775373 DOI: 10.3389/fmicb.2020.580164] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 11/30/2020] [Indexed: 12/18/2022] Open
Abstract
The search for novel renewable products over synthetics hallmarked this decade and those of the recent past. Most economies that are prospecting on biodiversity for improved bio-economy favor renewable resources over synthetics for the potential opportunity they hold. However, this field is still nascent as the bulk of the available resources are non-renewable based. Microbial metabolites, emphasis on secondary metabolites, are viable alternatives; nonetheless, vast microbial resources remain under-exploited; thus, the need for a continuum in the search for new products or bio-modifying existing products for novel functions through an efficient approach. Environmental distress syndrome has been identified as a factor that influences the emergence of genetic diversity in prokaryotes. Still, the process of how the change comes about is poorly understood. The emergence of new traits may present a high prospect for the industrially viable organism. Microbial enzymes have prominence in the bio-economic space, and proteases account for about sixty percent of all enzyme market. Microbial keratinases are versatile proteases which are continuously gaining momentum in biotechnology owing to their effective bio-conversion of recalcitrant keratin-rich wastes and sustainable implementation of cleaner production. Keratinase-assisted biodegradation of keratinous materials has revitalized the prospects for the utilization of cost-effective agro-industrial wastes, as readily available substrates, for the production of high-value products including amino acids and bioactive peptides. This review presented an overview of keratin structural complexity, the potential mechanism of keratin biodegradation, and the environmental impact of keratinous wastes. Equally, it discussed microbial keratinase; vis-à-vis sources, production, and functional properties with considerable emphasis on the ecological implication of microbial producers and catalytic tendency improvement strategies. Keratinase applications and prospective high-end use, including animal hide processing, detergent formulation, cosmetics, livestock feed, and organic fertilizer production, were also articulated.
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Affiliation(s)
- Nonso E. Nnolim
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
| | - Chibuike C. Udenigwe
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Anthony I. Okoh
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
| | - Uchechukwu U. Nwodo
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
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Chen Y, Zhao Y, Zhou X, Liu N, Ming D, Zhu L, Jiang L. Improving the thermostability of trehalose synthase from Thermomonospora curvata by covalent cyclization using peptide tags and investigation of the underlying molecular mechanism. Int J Biol Macromol 2020; 168:13-21. [PMID: 33285196 DOI: 10.1016/j.ijbiomac.2020.11.195] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/27/2020] [Accepted: 11/29/2020] [Indexed: 10/22/2022]
Abstract
One of the most desirable properties for industrial enzymes is high thermotolerance, which can reduce the amount of biocatalyst used and lower the production cost. Aiming to improve the thermotolerance of trehalose synthase (TreS, EC 5.4.99.16) from Thermomonospora curvata, four mutants (G78D, V289L, G322A, I323L) and four cyclized TreS variants fused using different Tag/Catcher pairs (SpyTag-TreS-SpyCatcher, SpyTag-TreS-KTag, SnoopTag-TreS-SnoopCatcher, SnoopTagJR-TreS-DogTag) were constructed. The results showed that cyclization led to a much larger increase of thermostability than that achieved via site-directed mutagenesis. The t1/2 of all four cyclized TreS variants at 55 °C increased 2- to 3- fold, while the analysis of kinetic and thermodynamic stability indicated that the T50 of the different cyclized TreS variants increased by between 7.5 °C and 15.5 °C. Molecular dynamics simulations showed that the Rg values of cyclized TreS decreased significantly, indicating that the protein maintained a tight tertiary structure at high temperatures, avoiding exposure of the hydrophobic core to the solvent. Cyclization using a Tag/Catcher pair is a simple and effective method for improving the thermotolerance of enzymes.
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Affiliation(s)
- Yao Chen
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China; College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yang Zhao
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Xue Zhou
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Nian Liu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Dengming Ming
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Liying Zhu
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Ling Jiang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China.
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Liu C, Zhu L, Chen L. Effect of salt and metal accumulation on performance of membrane distillation system and microbial community succession in membrane biofilms. WATER RESEARCH 2020; 177:115805. [PMID: 32311577 DOI: 10.1016/j.watres.2020.115805] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 04/02/2020] [Accepted: 04/05/2020] [Indexed: 06/11/2023]
Abstract
Membrane distillation (MD) works as a potential technology for the "zero liquid discharge" water treatment owing to its high concentration brine tolerance. The continuous accumulation of salts and metals in the MD system during the "zero liquid discharge" water treatment inevitably posed remarkable impacts on the biofilm formation as well as the MD performance. Hence, the biofouling mechanism of MD was deeply researched in this study with an emphasis on the roles of salt-stress (NaCl) and metal-stress (Zn and Fe) in biofilm development. The membrane flux decline of MD was effectively mitigated by the appearance of NaCl and ZnO, while that was significantly aggravated under the metal-stress of Fe. Considering the serious membrane scaling caused by NaCl crystals, a sharp flux decline was seen for the NaCl group during the later stage of MD operation. Basing on the 16S rDNA and 16S rRNA analysis, heat-stress, salt-stress, and metal-stress all posed certain impacts on the biofouling development in the MD system, and a more remarkable influence was observed for metal-stress. Under the salt-stress from NaCl, a thin biofilm containing high biovolume of dead cells finally formed, in which the bacterial community mainly consisted of halotolerant and thermophile species. Owing to the Zn2+-stress and oxidation-stress mechanisms of ZnO, the bacteria in the MD system were largely dead and live bacterial community in biofilms was dominated by some gram-negative species. Under the metal-stress from Fe, a rather thick biofilm containing higher biovolume of live cells clearly developed, in which the prevailing species could secret large amounts of EPS and accumulate metabolites around cells as biological surfactants, inducing aggravated membrane biofouling and high risk of membrane wetting.
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Affiliation(s)
- Chang Liu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Liang Zhu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China.
| | - Lin Chen
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
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Lin YF, Su PC, Chen PT. Production and characterization of a recombinant thermophilic trehalose synthase from Thermus antranikianii. J Biosci Bioeng 2020; 129:418-422. [DOI: 10.1016/j.jbiosc.2019.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/04/2019] [Accepted: 10/12/2019] [Indexed: 12/12/2022]
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Ren X, Wang J, Li Y, Wang F, Wang R, Li P, Ma C, Su J. Computational and Enzymatic Analyses Unveil the Catalytic Mechanism of Thermostable Trehalose Synthase and Suggest Strategies for Improved Bioconversion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8177-8185. [PMID: 31290662 DOI: 10.1021/acs.jafc.9b01848] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Trehalose synthase (TreS) catalyzes the reversible interconversion of maltose to trehalose, and is therefore essential for trehalose production. Consequently, dissecting the catalytic mechanism of TreS is important for enzyme optimization and industrial applications. TreS from Thermobaculum terrenum (TtTreS) is a thermostable enzyme. Here, we studied the composition of the TtTreS active site through computer calculation and enzyme analysis. The results were consistent with a two-step double-displacement mechanism, similar to that of glycoside hydrolase 13 family enzymes. However, our data suggested that glucose rotation, following breakage of the α-1,4 glycosidic bond, is a key factor determining the reaction direction and conversion rate. The N246 residue plays an important role in glucose rotation. Moreover, we established a saturated mutation model for the nonconserved amino acids around the substrate gateway domain. Finally, four TtTreS mutants (K136T, Y137D, K138N, and D139S) resulted in improved trehalose yield compared to that of the wild-type enzyme.
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Affiliation(s)
- Xudong Ren
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology , Jinan , Shandong 250353 , China
- Key Laboratory of Shandong Microbial Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , China
| | - Junqing Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology , Jinan , Shandong 250353 , China
- Key Laboratory of Shandong Microbial Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , China
| | - Yan Li
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology , Jinan , Shandong 250353 , China
- Key Laboratory of Shandong Microbial Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , China
| | - Fen Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology , Jinan , Shandong 250353 , China
- Key Laboratory of Shandong Microbial Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , China
| | - Ruiming Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology , Jinan , Shandong 250353 , China
- Key Laboratory of Shandong Microbial Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , China
| | - Piwu Li
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology , Jinan , Shandong 250353 , China
- Key Laboratory of Shandong Microbial Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , China
| | - Chunling Ma
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology , Jinan , Shandong 250353 , China
- Key Laboratory of Shandong Microbial Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , China
| | - Jing Su
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology , Jinan , Shandong 250353 , China
- Key Laboratory of Shandong Microbial Engineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , China
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Liu H, Yang S, Wang X, Wang T. Production of trehalose with trehalose synthase expressed and displayed on the surface of Bacillus subtilis spores. Microb Cell Fact 2019; 18:100. [PMID: 31159804 PMCID: PMC6547511 DOI: 10.1186/s12934-019-1152-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 05/28/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Bacillus subtilis spores have been commonly used for the surface display of various food-related or human antigens or enzymes. For successful display, the target protein needs to be fused with an anchor protein. The preferred anchored proteins are the outer-coat proteins of spores; outer-coat proteins G (CotG) and C (CotC) are commonly used. In this study, mutant trehalose synthase (V407M/K490L/R680E TreS) was displayed on the surface of B. subtilis WB800n spores using CotG and CotC individually or in combination as an anchoring protein. RESULTS Western blotting, immunofluorescence, dot blot, and enzymatic-activity assays detected TreS on the spore surface. The TreS activity with CotC and CotG together as the anchor protein was greater than the sum of the enzymatic activities with CotC or CotG alone. The TreS displayed on the spore surface with CotC and CotG together as the anchoring protein showed elevated and stable specific activity. To ensure spore stability and prevent spore germination in the trehalose preparation system, two germination-specific lytic genes, sleB and cwlJ, were deleted from the B. subtilis WB800n genome. It was demonstrated that this deletion did not affect the growth and spore formation of B. subtilis WB800n but strongly inhibited germination of the spores during transformation. The conversion rate of trehalose from 300 g/L maltose by B. subtilis strain WB800n(ΔsleB, ΔcwlJ)/cotC-treS-cotG-treS was 74.1% at 12 h (350 U/[g maltose]), and its enzymatic activity was largely retained, with a conversion rate of 73% after four cycles. CONCLUSIONS The spore surface display system based on food-grade B. subtilis with CotC and CotG as a combined carrier appears to be a powerful technology for TreS expression, which may be used for the biotransformation of D-maltose into D-trehalose.
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Affiliation(s)
- Hongling Liu
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), No. 3501, University Road, Changqing District, Jinan, 250353, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, College of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China.,Key Laboratory of Industrial Fermentation Microbiology, Tianjin University of Science & Technology, Ministry of Education, Tianjin, 300457, People's Republic of China.,Tianjin Key Lab of Industrial Microbiology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Shaojie Yang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), No. 3501, University Road, Changqing District, Jinan, 250353, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, College of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China
| | - Xihui Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), No. 3501, University Road, Changqing District, Jinan, 250353, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, College of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China
| | - Tengfei Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), No. 3501, University Road, Changqing District, Jinan, 250353, Shandong, People's Republic of China. .,Key Laboratory of Shandong Microbial Engineering, College of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, Shandong, People's Republic of China.
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12
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Liu H, Wang X, Yang S, Wang R, Wang T. Saturation mutagenesis and self-inducible expression of trehalose synthase in Bacillus subtilis. Biotechnol Prog 2019; 35:e2826. [PMID: 31021505 DOI: 10.1002/btpr.2826] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 02/12/2019] [Accepted: 04/19/2019] [Indexed: 01/27/2023]
Abstract
Trehalose is a nonreducing disaccharide synthesized by trehalose synthase (TreS), which catalyzes the reversible interconversion of maltose and trehalose. We aimed to enhance the catalytic conversion of maltose to trehalose by saturation mutagenesis, and constructed a self-inducible TreS expression system by generating a robust Bacillus subtilis recombinant. We found that the conversion yield and enzymatic activity of TreS was enhanced by saturation mutations, especially by the combination of V407M and K490L mutations. At the same time, these saturation mutations were contributing to reducing by-products in the reaction. Compared to WT TreS, the conversion yield of maltose to trehalose was increased by 11.9%, and the kcat /Km toward trehalose was 1.33 times higher in the reaction catalyzed by treSV407M-K490L . treSV407M-K490L expression was further observed in the recombinant B. subtilis W800N(ΔσF ) under the influence of PsrfA , Pcry3Aa , and PsrfA-cry3Aa promoters without an inducer. It was shown that PsrfA-cry3Aa was evidently a stronger promoter for treSV407M-K490L expression, with the intracellular enzymatic activity of recombinant treSV407M-K490L being over 5,800 U/g at 35 hr in TB medium. These results suggested the combination of two mutations, V407M and K490L, was conducive for the production of trehalose. In addition, the self-inducible TreSV407M/K490L mutant in the B. subtilis host provides a low-cost choice for the industrial production of endotoxin-free trehalose with high yields.
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Affiliation(s)
- Hongling Liu
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, QiLu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China.,Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science &Technology), Ministry of Education, Tianjin, People's Republic of China
| | - Xihui Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, QiLu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China
| | - Shaojie Yang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, QiLu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China
| | - Ruiming Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, QiLu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China
| | - Tengfei Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP), Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China.,Key Laboratory of Shandong Microbial Engineering, School of Bioengineering, QiLu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, People's Republic of China
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13
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Heterologous expression and characterization of novel 2-Deoxy-d-ribose-5-phosphate aldolase (DERA) from Pyrobaculum calidifontis and Meiothermus ruber. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Cai X, Seitl I, Mu W, Zhang T, Stressler T, Fischer L, Jiang B. Characterization of a Recombinant Trehalose Synthase from Arthrobacter chlorophenolicus and its Unique Kinetics Indicating a Substrate Cooperativity. Appl Biochem Biotechnol 2018; 187:1255-1271. [DOI: 10.1007/s12010-018-2877-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 08/27/2018] [Indexed: 01/06/2023]
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15
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Cai X, Seitl I, Mu W, Zhang T, Stressler T, Fischer L, Jiang B. Combination of sequence-based and in silico screening to identify novel trehalose synthases. Enzyme Microb Technol 2018; 115:62-72. [DOI: 10.1016/j.enzmictec.2018.04.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 02/16/2018] [Accepted: 04/25/2018] [Indexed: 01/14/2023]
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16
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Liu H, Yang S, Liu Q, Wang R, Wang T. A process for production of trehalose by recombinant trehalose synthase and its purification. Enzyme Microb Technol 2018; 113:83-90. [DOI: 10.1016/j.enzmictec.2017.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 11/19/2017] [Accepted: 11/24/2017] [Indexed: 10/18/2022]
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17
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Biotechnical production of trehalose through the trehalose synthase pathway: current status and future prospects. Appl Microbiol Biotechnol 2018; 102:2965-2976. [PMID: 29460000 DOI: 10.1007/s00253-018-8814-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 01/22/2023]
Abstract
Trehalose (α-D-glucopyranosyl-(1 → 1)-α-D-glucopyranoside) is a non-reducing disaccharide composed of two glucose molecules linked by an α,α-1,1-glycosidic bond. It possesses physicochemical properties, which account for its biological roles in a variety of prokaryotic and eukaryotic organisms and invertebrates. Intensive studies of trehalose gradually uncovered its functions, and its applications in foods, cosmetics, and pharmaceuticals have increased every year. Currently, trehalose is industrially produced by the two-enzyme method, which was first developed in 1995 using maltooligosyltrehalose synthase (EC 5.4.99.15) and subsequently using maltooligosyltrehalose trehalohydrolase (EC 3.2.1.141), with starch as the substrate. This biotechnical method has lowered the price of trehalose and expanded its applications. However, when trehalose synthase (EC 5.4.99.16) was later discovered, this method for trehalose production using maltose as the substrate soon became a popular topic because of its simplicity and potential in industrial production. Since then, many trehalose synthases have been studied. This review summarizes the sources and characteristics of reported trehalose synthases, and the most recent advances on structural analysis of trehalose synthase, catalytic mechanism, molecular modification, and usage in industrial production processes.
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Yang S, Lv X, Wang X, Wang J, Wang R, Wang T. Cell-Surface Displayed Expression of Trehalose Synthase from Pseudomonas putida ATCC 47054 in Pichia Pastoris Using Pir1p as an Anchor Protein. Front Microbiol 2017; 8:2583. [PMID: 29312257 PMCID: PMC5742630 DOI: 10.3389/fmicb.2017.02583] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 12/11/2017] [Indexed: 01/29/2023] Open
Abstract
Yeast cell-surface display technologies have been widely applied in the fields of food, medicine, and feed enzyme production, including lipase, α-amylase, and endoglucanase. In this study, a treS gene was fused with the yeast cell-surface anchor protein gene Pir1p by overlap PCR, the Pir1p-treS fusion gene was ligated into pPICZαA and pGAPZαA and transformed into P. pastoris GS115 to obtain recombinant yeast strains that displays trehalose synthase(TreS) on its cell surface as an efficient and recyclable whole-cell biocatalyst. Firstly, the enhanced green fluorescence protein gene (egfp) was used as the reporter protein to fusion the Pir1p gene and treS gene to construct the recombinant plasmids containing treS-egfg-Pir1p fusion gene, and electrotransformed into P. pastoris GS115 to analyze the surface display characteristics of fusion gene by Western blot, fluorescence microscopy and flow cytometry. The analysis shown that the treS-egfg-Pir1p fusion protein can be successfully displayed on the surface of yeast cell, and the expression level increased with the extension of fermentation time. These results implied that the Pir1p-treS fusion gene can be well displayed on the cell surface. Secondly, in order to obtain surface active cells with high enzyme activity, the enzymatic properties of TreS displayed on the cell surface was analyzed, and the fermentation process of recombinant P. patoris GS115 containing pPICZαA-Pir1p-treS and pGAPZαA-Pir1p-treS was studied respectively. The cell surface display TreS was stable over a broad range of temperatures (10-45°C) and pH (6.0-8.5). The activity of TreS displayed on cell surface respectively reached 1,108 Ug-1 under PAOX1 control for 150 h, and 1,109 Ug-1 under PGAP control for 75h in a 5 L fermenter, respectively. Lastly, the cell-surface displayed TreS was used to product trehalose using high maltose syrup as substrate at pH 8.0 and 15°C. The surface display TreS cells can be recycled for three times and the weight conversion rate of trehalose was more than 60%. This paper revealed that the TreS can display on the P. pastoris cell surface and still had a higher catalytic activity after recycled three times, which was suitable for industrial application, especially the preparation of pharmaceutical grade trehalose products.
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Affiliation(s)
- Shaojie Yang
- Key Laboratory of Shandong Microbial Engineering, Qilu University of Technology (ShanDong Academy of Sciences), Jinan, China
| | - Xin Lv
- Key Laboratory of Shandong Microbial Engineering, Qilu University of Technology (ShanDong Academy of Sciences), Jinan, China
| | - Xihui Wang
- Key Laboratory of Shandong Microbial Engineering, Qilu University of Technology (ShanDong Academy of Sciences), Jinan, China
| | - Junqing Wang
- Key Laboratory of Shandong Microbial Engineering, Qilu University of Technology (ShanDong Academy of Sciences), Jinan, China
| | - Ruiming Wang
- Key Laboratory of Shandong Microbial Engineering, Qilu University of Technology (ShanDong Academy of Sciences), Jinan, China
| | - Tengfei Wang
- Key Laboratory of Shandong Microbial Engineering, Qilu University of Technology (ShanDong Academy of Sciences), Jinan, China
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19
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Wang J, Ren X, Wang R, Su J, Wang F. Structural Characteristics and Function of a New Kind of Thermostable Trehalose Synthase from Thermobaculum terrenum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:7726-7735. [PMID: 28809106 DOI: 10.1021/acs.jafc.7b02732] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Trehalose has important applications in the food industry and pharmaceutical manufacturing. The thermostable enzyme trehalose synthase from Thermobaculum terrenum (TtTS) catalyzes the reversible interconversion of maltose and trehalose. Here, we investigated the structural characteristics of TtTS in complex with the inhibitor TriS. TtTS exhibits the typical three domain glycoside hydrolase family 13 structure. The catalytic cleft consists of Asp202-Glu244-Asp310 and various conserved substrate-binding residues. However, among trehalose synthases, TtTS demonstrates obvious thermal stability. TtTS has more polar (charged) amino acids distributed on its protein structure surface and more aromatic amino acids buried within than other mesophilic trehalose synthases. Furthermore, TtTS structural analysis revealed four potential metal ion-binding sites rather than the two in a homologous structure. These factors may render TtTS relatively more thermostable among mesophilic trehalose synthases. The detailed thermophilic enzyme structure provided herein may provide guidance for further protein engineering in the design of stabilized enzymes.
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Affiliation(s)
- Junqing Wang
- Faculty of Light Industry, Province Key Laboratory of Microbial Engineering, Qilu University of Technology , Jinan 250353, P.R. China
| | - Xudong Ren
- Faculty of Light Industry, Province Key Laboratory of Microbial Engineering, Qilu University of Technology , Jinan 250353, P.R. China
| | - Ruiming Wang
- Faculty of Light Industry, Province Key Laboratory of Microbial Engineering, Qilu University of Technology , Jinan 250353, P.R. China
| | - Jing Su
- Faculty of Light Industry, Province Key Laboratory of Microbial Engineering, Qilu University of Technology , Jinan 250353, P.R. China
| | - Feng Wang
- State Key Laboratory of Microbial Technology, School of Life Sciences, Shandong University , Jinan, Shandong 250100, P.R. China
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20
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Song X, Tang S, Jiang L, Zhu L, Huang H. Integrated Biocatalytic Process for Trehalose Production and Separation from Maltose. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02276] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaogang Song
- College
of Biotechnology and Pharmaceutical Engineering, ‡Jiangsu National
Synergetic Innovation Center for Advanced Materials (SICAM), #College of Food Science
and Light Industry, and ⊥College of Chemical and Molecular Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - Susu Tang
- College
of Biotechnology and Pharmaceutical Engineering, ‡Jiangsu National
Synergetic Innovation Center for Advanced Materials (SICAM), #College of Food Science
and Light Industry, and ⊥College of Chemical and Molecular Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - Ling Jiang
- College
of Biotechnology and Pharmaceutical Engineering, ‡Jiangsu National
Synergetic Innovation Center for Advanced Materials (SICAM), #College of Food Science
and Light Industry, and ⊥College of Chemical and Molecular Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - Liying Zhu
- College
of Biotechnology and Pharmaceutical Engineering, ‡Jiangsu National
Synergetic Innovation Center for Advanced Materials (SICAM), #College of Food Science
and Light Industry, and ⊥College of Chemical and Molecular Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - He Huang
- College
of Biotechnology and Pharmaceutical Engineering, ‡Jiangsu National
Synergetic Innovation Center for Advanced Materials (SICAM), #College of Food Science
and Light Industry, and ⊥College of Chemical and Molecular Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
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21
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Li N, Wang H, Li L, Cheng H, Liu D, Cheng H, Deng Z. Integrated Approach To Producing High-Purity Trehalose from Maltose by the Yeast Yarrowia lipolytica Displaying Trehalose Synthase (TreS) on the Cell Surface. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:6179-6187. [PMID: 27472444 DOI: 10.1021/acs.jafc.6b02175] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An alternative strategy that integrated enzyme production, trehalose biotransformation, and bioremoval in one bioreactor was developed in this study, thus simplifying the traditional procedures used for trehalose production. The trehalose synthase gene from a thermophilic archaea, Picrophilus torridus, was first fused to the YlPir1 anchor gene and then inserted into the genome of Yarrowia lipolytica, thus yielding an engineered yeast strain. The trehalose yield reached 73% under optimal conditions. The thermal and pH stabilities of the displayed enzyme were improved compared to those of its free form purified from recombinant Escherichia coli. After biotransformation, the glucose byproduct and residual maltose were directly fermented to ethanol by a Saccharomyces cerevisiae strain. Ethanol can be separated by distillation, and high-purity trehalose can easily be obtained from the fermentation broth. The results show that this one-pot procedure is an efficient approach to the economical production of trehalose from maltose.
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Affiliation(s)
| | - Hengwei Wang
- Innovation & Application Institute (IAI), Zhejiang Ocean University , Zhoushan 316022, China
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22
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Zheng Z, Xu Y, Sun Y, Mei W, Ouyang J. Biocatalytic Production of Trehalose from Maltose by Using Whole Cells of Permeabilized Recombinant Escherichia coli. PLoS One 2015; 10:e0140477. [PMID: 26462117 PMCID: PMC4603892 DOI: 10.1371/journal.pone.0140477] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 09/25/2015] [Indexed: 11/23/2022] Open
Abstract
Trehalose is a non-reducing disaccharide, which can protect proteins, lipid membranes, and cells from desiccation, refrigeration, dehydration, and other harsh environments. Trehalose can be produced by different pathways and trehalose synthase pathway is a convenient, practical, and low-cost pathway for the industrial production of trehalose. In this study, 3 candidate treS genes were screened from genomic databases of Pseudomonas and expressed in Escherichia coli. One of them from P. stutzeri A1501 exhibited the best transformation ability from maltose into trehalose and the least byproduct. Thus, whole cells of this recombinant E. coli were used as biocatalyst for trehalose production. In order to improve the conversion rate of maltose to trehalose, optimization of the permeabilization and biotransformation were carried out. Under optimal conditions, 92.2 g/l trehalose was produced with a high productivity of 23.1 g/(l h). No increase of glucose was detected during the whole course. The biocatalytic process developed in this study might serve as a candidate for the large scale production of trehalose.
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Affiliation(s)
- Zhaojuan Zheng
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People’s Republic of China
- Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals, Nanjing 210037, People’s Republic of China
| | - Ying Xu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People’s Republic of China
| | - Ye Sun
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People’s Republic of China
| | - Wending Mei
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People’s Republic of China
| | - Jia Ouyang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People’s Republic of China
- Key Laboratory of Forest Genetics and Biotechnology of the Ministry of Education, Nanjing 210037, People’s Republic of China
- * E-mail:
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Preparation of Cross-Linked Enzyme Aggregates of Trehalose Synthase via Co-aggregation with Polyethyleneimine. Appl Biochem Biotechnol 2014; 174:2067-78. [DOI: 10.1007/s12010-014-1104-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 07/22/2014] [Indexed: 10/24/2022]
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25
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Chen Y, Xiao CP, Chen XY, Yang LW, Qi X, Zheng JF, Li MC, Zhang J. Preparation of cross-linked enzyme aggregates in water-in-oil emulsion: Application to trehalose synthase. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.12.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Genome Sequence of Thermus thermophilus ATCC 33923, a Thermostable Trehalose-Producing Strain. GENOME ANNOUNCEMENTS 2013; 1:1/4/e00493-13. [PMID: 23887916 PMCID: PMC3735056 DOI: 10.1128/genomea.00493-13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Thermus thermophilus ATCC 33923 contains a thermostable enzyme that can efficiently catalyze the conversion of maltose into trehalose. Here we report a 2.15-Mb assembly of its genome sequence and other useful information, including the coding sequences (CDS) responsible for biological processes such as DNA replication, DNA repair, and RNA maturation.
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27
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Cloning, expression, properties, and functional amino acid residues of new trehalose synthase from Thermomonospora curvata DSM 43183. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.01.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Cloning, expression and functional characterization of a novel trehalose synthase from marine Pseudomonas sp. P8005. World J Microbiol Biotechnol 2013; 29:2195-206. [DOI: 10.1007/s11274-013-1385-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 05/22/2013] [Indexed: 10/26/2022]
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29
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Cloning, Expression and Characterization of a Trehalose Synthase Gene From Rhodococcus opacus. Protein J 2013; 32:223-9. [DOI: 10.1007/s10930-013-9476-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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Wu TT, Lin SC, Shaw JF. Enzymatic processes for the purification of trehalose. Biotechnol Prog 2012; 29:83-90. [DOI: 10.1002/btpr.1669] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Revised: 09/28/2012] [Indexed: 11/11/2022]
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31
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Wang Y, Zhang J, Wang W, Liu Y, Xing L, Li M. Effects of the N-terminal and C-terminal domains of Meiothermus ruber CBS-01 trehalose synthase on thermostability and activity. Extremophiles 2012; 16:377-85. [DOI: 10.1007/s00792-012-0436-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Accepted: 02/24/2012] [Indexed: 11/30/2022]
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32
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Zhang R, Pan YT, He S, Lam M, Brayer GD, Elbein AD, Withers SG. Mechanistic analysis of trehalose synthase from Mycobacterium smegmatis. J Biol Chem 2011; 286:35601-35609. [PMID: 21840994 DOI: 10.1074/jbc.m111.280362] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Trehalose synthase (TreS) catalyzes the reversible interconversion of maltose and trehalose and has been shown recently to function primarily in the mobilization of trehalose as a glycogen precursor. Consequently, the mechanism of this intriguing isomerase is of both academic and potential pharmacological interest. TreS catalyzes the hydrolytic cleavage of α-aryl glucosides as well as α-glucosyl fluoride, thereby allowing facile, continuous assays. Reaction of TreS with 5-fluoroglycosyl fluorides results in the trapping of a covalent glycosyl-enzyme intermediate consistent with TreS being a member of the retaining glycoside hydrolase family 13 enzyme family, thus likely following a two-step, double displacement mechanism. This trapped intermediate was subjected to protease digestion followed by LC-MS/MS analysis, and Asp(230) was thereby identified as the catalytic nucleophile. The isomerization reaction was shown to be an intramolecular process by demonstration of the inability of TreS to incorporate isotope-labeled exogenous glucose into maltose or trehalose consistent with previous studies on other TreS enzymes. The absence of a secondary deuterium kinetic isotope effect and the general independence of k(cat) upon leaving group ability both point to a rate-determining conformational change, likely the opening and closing of the enzyme active site.
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Affiliation(s)
- Ran Zhang
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Yuan T Pan
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205
| | - Shouming He
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Michael Lam
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Gary D Brayer
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Alan D Elbein
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205
| | - Stephen G Withers
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
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33
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Integrated process for the purification and immobilization of recombinant trehalose synthase for trehalose production. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.03.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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