1
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Ye LC, Chow SY, Chang SC, Kuo CH, Wang YL, Wei YJ, Lee GC, Liaw SH, Chen WM, Chen SC. Structural and Mutational Analyses of Trehalose Synthase from Deinococcus radiodurans Reveal the Interconversion of Maltose-Trehalose Mechanism. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:18649-18657. [PMID: 39109746 PMCID: PMC11342931 DOI: 10.1021/acs.jafc.4c03661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 07/29/2024] [Accepted: 07/30/2024] [Indexed: 08/22/2024]
Abstract
Trehalose synthase (TreS) catalyzes the reversible interconversion of maltose to trehalose, playing a vital role in trehalose production. Understanding the catalytic mechanism of TreS is crucial for optimizing the enzyme activity and enhancing its suitability for industrial applications. Here, we report the crystal structures of both the wild type and the E324D mutant of Deinococcus radiodurans trehalose synthase in complex with the trehalose analogue, validoxylamine A. By employing structure-guided mutagenesis, we identified N253, E320, and E324 as crucial residues within the +1 subsite for isomerase activity. Based on these complex structures, we propose the catalytic mechanism underlying the reversible interconversion of maltose to trehalose. These findings significantly advance our comprehension of the reaction mechanism of TreS.
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Affiliation(s)
- Li-Ci Ye
- Department
of Life Sciences and Institute of Genome Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Sih-Yao Chow
- Department
of Life Sciences and Institute of Genome Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - San-Chi Chang
- Department
of Agricultural Chemistry, National Taiwan
University, Taipei 10617, Taiwan
| | - Chia-Hung Kuo
- Department
of Seafood Science, National Kaohsiung University
of Science and Technology, No. 142, Haijhuan Rd, Kaohsiung, Nanzih District 81157, Taiwan
| | - Yung-Lin Wang
- Institute
of Biochemistry and Molecular Biology, National
Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Genomics
Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Yong-Jun Wei
- Department
of Life Sciences and Institute of Genome Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Guan-Chiun Lee
- Department
of Life Science, National Taiwan Normal
University, No. 162, Sec. 1, Heping East Road, Taipei 116, Taiwan
| | - Shwu-Huey Liaw
- Department
of Life Sciences and Institute of Genome Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Wen-Ming Chen
- Department
of Seafood Science, National Kaohsiung University
of Science and Technology, No. 142, Haijhuan Rd, Kaohsiung, Nanzih District 81157, Taiwan
| | - Sheng-Chia Chen
- Department
of Seafood Science, National Kaohsiung University
of Science and Technology, No. 142, Haijhuan Rd, Kaohsiung, Nanzih District 81157, Taiwan
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2
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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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3
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Sardiña-Peña AJ, Mesa-Ramos L, Iglesias-Figueroa BF, Ballinas-Casarrubias L, Siqueiros-Cendón TS, Espinoza-Sánchez EA, Flores-Holguín NR, Arévalo-Gallegos S, Rascón-Cruz Q. Analyzing Current Trends and Possible Strategies to Improve Sucrose Isomerases' Thermostability. Int J Mol Sci 2023; 24:14513. [PMID: 37833959 PMCID: PMC10572972 DOI: 10.3390/ijms241914513] [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: 09/01/2023] [Revised: 09/10/2023] [Accepted: 09/10/2023] [Indexed: 10/15/2023] Open
Abstract
Due to their ability to produce isomaltulose, sucrose isomerases are enzymes that have caught the attention of researchers and entrepreneurs since the 1950s. However, their low activity and stability at temperatures above 40 °C have been a bottleneck for their industrial application. Specifically, the instability of these enzymes has been a challenge when it comes to their use for the synthesis and manufacturing of chemicals on a practical scale. This is because industrial processes often require biocatalysts that can withstand harsh reaction conditions, like high temperatures. Since the 1980s, there have been significant advancements in the thermal stabilization engineering of enzymes. Based on the literature from the past few decades and the latest achievements in protein engineering, this article systematically describes the strategies used to enhance the thermal stability of sucrose isomerases. Additionally, from a theoretical perspective, we discuss other potential mechanisms that could be used for this purpose.
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Affiliation(s)
- Amado Javier Sardiña-Peña
- Laboratorio de Biotecnología I, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitarios s/n Nuevo Campus Universitario, Chihuahua 31125, Mexico; (A.J.S.-P.); (B.F.I.-F.); (L.B.-C.); (T.S.S.-C.); (E.A.E.-S.); (S.A.-G.)
| | - Liber Mesa-Ramos
- Laboratorio de Microbiología III, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitarios s/n Nuevo Campus Universitario, Chihuahua 31125, Mexico;
| | - Blanca Flor Iglesias-Figueroa
- Laboratorio de Biotecnología I, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitarios s/n Nuevo Campus Universitario, Chihuahua 31125, Mexico; (A.J.S.-P.); (B.F.I.-F.); (L.B.-C.); (T.S.S.-C.); (E.A.E.-S.); (S.A.-G.)
| | - Lourdes Ballinas-Casarrubias
- Laboratorio de Biotecnología I, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitarios s/n Nuevo Campus Universitario, Chihuahua 31125, Mexico; (A.J.S.-P.); (B.F.I.-F.); (L.B.-C.); (T.S.S.-C.); (E.A.E.-S.); (S.A.-G.)
| | - Tania Samanta Siqueiros-Cendón
- Laboratorio de Biotecnología I, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitarios s/n Nuevo Campus Universitario, Chihuahua 31125, Mexico; (A.J.S.-P.); (B.F.I.-F.); (L.B.-C.); (T.S.S.-C.); (E.A.E.-S.); (S.A.-G.)
| | - Edward Alexander Espinoza-Sánchez
- Laboratorio de Biotecnología I, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitarios s/n Nuevo Campus Universitario, Chihuahua 31125, Mexico; (A.J.S.-P.); (B.F.I.-F.); (L.B.-C.); (T.S.S.-C.); (E.A.E.-S.); (S.A.-G.)
| | - Norma Rosario Flores-Holguín
- Laboratorio Virtual NANOCOSMOS, Departamento de Medio Ambiente y Energía, Centro de Investigación en Materiales Avanzados, Chihuahua 31136, Mexico;
| | - Sigifredo Arévalo-Gallegos
- Laboratorio de Biotecnología I, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitarios s/n Nuevo Campus Universitario, Chihuahua 31125, Mexico; (A.J.S.-P.); (B.F.I.-F.); (L.B.-C.); (T.S.S.-C.); (E.A.E.-S.); (S.A.-G.)
| | - Quintín Rascón-Cruz
- Laboratorio de Biotecnología I, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitarios s/n Nuevo Campus Universitario, Chihuahua 31125, Mexico; (A.J.S.-P.); (B.F.I.-F.); (L.B.-C.); (T.S.S.-C.); (E.A.E.-S.); (S.A.-G.)
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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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Li J, Li H, Liu H, Luo Y. Recent Advances in the Biosynthesis of Natural Sugar Substitutes in Yeast. J Fungi (Basel) 2023; 9:907. [PMID: 37755015 PMCID: PMC10533046 DOI: 10.3390/jof9090907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/29/2023] [Accepted: 09/01/2023] [Indexed: 09/28/2023] Open
Abstract
Natural sugar substitutes are safe, stable, and nearly calorie-free. Thus, they are gradually replacing the traditional high-calorie and artificial sweeteners in the food industry. Currently, the majority of natural sugar substitutes are extracted from plants, which often requires high levels of energy and causes environmental pollution. Recently, biosynthesis via engineered microbial cell factories has emerged as a green alternative for producing natural sugar substitutes. In this review, recent advances in the biosynthesis of natural sugar substitutes in yeasts are summarized. The metabolic engineering approaches reported for the biosynthesis of oligosaccharides, sugar alcohols, glycosides, and rare monosaccharides in various yeast strains are described. Meanwhile, some unresolved challenges in the bioproduction of natural sugar substitutes in yeast are discussed to offer guidance for future engineering.
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Affiliation(s)
- Jian Li
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (J.L.); (H.L.); (H.L.)
| | - Honghao Li
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (J.L.); (H.L.); (H.L.)
| | - Huayi Liu
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (J.L.); (H.L.); (H.L.)
| | - Yunzi Luo
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; (J.L.); (H.L.); (H.L.)
- Georgia Tech Shenzhen Institute, Tianjin University, Tangxing Road 133, Nanshan District, Shenzhen 518071, China
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6
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Production of Trehalose from Maltose by Whole Cells of Permeabilized Recombinant Corynebacterium glutamicum. Processes (Basel) 2022. [DOI: 10.3390/pr10122501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Trehalose (α-D-glucopyranosyl-1,1-α-D-glucopyranoside) is a stable and nonreducing disaccharide; can be used as sweetener, stabilizer, and humectant; and has many applications in the food, pharmaceutical, and cosmetic industries. Trehalose production from maltose catalyzed by trehalose synthase (TreS) is simple and economically feasible for industrial-scale application. Reducing the cost and enhancing the efficiency of TreS synthesis and the conversion of maltose to trehalose is critical for trehalose production. In this study, the homologous TreS was constitutively overexpressed in Corynebacterium glutamicum ATCC13032 by removing the repressor gene lacIq fragment in the plasmid, and TreS expression could be exempt from the inducer addition and induction process. For cell permeabilization, Triton X-100 was used as a permeabilization agent, and the treatment time was 3 h. In the conversion system, the permeabilized cells of recombinant C. glutamicum were used as biocatalysts, 300 g/L maltose was used as a substrate, and 173.7 g/L trehalose was produced within 12 h under 30 °C and pH 7.0 conditions. In addition, the whole-cell biocatalysts showed promising reusability. This study provides a safe, convenient, practical, and low-cost pathway for the production of trehalose.
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Chen A, Tapia H, Goddard JM, Gibney PA. Trehalose and its applications in the food industry. Compr Rev Food Sci Food Saf 2022; 21:5004-5037. [PMID: 36201393 DOI: 10.1111/1541-4337.13048] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/29/2022] [Accepted: 08/31/2022] [Indexed: 01/28/2023]
Abstract
Trehalose is a nonreducing disaccharide composed of two glucose molecules linked by α, α-1,1-glycosidic bond. It is present in a wide variety of organisms, including bacteria, fungi, insects, plants, and invertebrate animals. Trehalose has distinct physical and chemical properties that have been investigated for their biological importance in a range of prokaryotic and eukaryotic species. Emerging research on trehalose has identified untapped opportunities for its application in the food, medical, pharmaceutical, and cosmetics industries. This review summarizes the chemical and biological properties of trehalose, its occurrence and metabolism in living organisms, its protective role in molecule stabilization, and natural and commercial production methods. Utilization of trehalose in the food industry, in particular how it stabilizes protein, fat, carbohydrate, and volatile compounds, is also discussed in depth. Challenges and opportunities of its application in specific applications (e.g., diagnostics, bioprocessing, ingredient technology) are described. We conclude with a discussion on the potential of leveraging the unique molecular properties of trehalose in molecular stabilization for improving the safety, quality, and sustainability of our food systems.
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Affiliation(s)
- Anqi Chen
- Department of Food Science, Cornell University, Ithaca, New York, USA
| | - Hugo Tapia
- Biology Program, California State University - Channel Islands, Camarillo, California, USA
| | - Julie M Goddard
- Department of Food Science, Cornell University, Ithaca, New York, USA
| | - Patrick A Gibney
- Department of Food Science, Cornell University, Ithaca, New York, USA
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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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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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11
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Zhao X, Chen Y, Zhang L, Li Z, Wu X, Chen J, Wang F. Molecular cloning and biochemical characterization of a trehalose synthase from Myxococcus sp. strain V11. Protein Expr Purif 2021; 183:105865. [PMID: 33675938 DOI: 10.1016/j.pep.2021.105865] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 11/30/2022]
Abstract
The tresI gene of Myxococcus sp. strain V11 was cloned, and found to encode a trehalose synthase comprising 551 amino acids. The deduced molecular weight of the encoded TreS I protein 64.7 kDa and the isoelectric point (pI) was predicted to be 5.6. The catalytic cleft consists of the Asp202-Glu244-Asp310 catalytic triad and additional conserved residues. The recombinant (His)6-tag enzyme was expressed in Escherichia coli BL21(DE3) and purified by Ni2+-affinity chromatography, resulting in a specific activity of up to 172.7 U/mg. TLC and HPLC results confirmed that rTreS I can convert maltose into trehalose, with a yield of 61%. The KM and Vmax values of recombinant TreS I for maltose were 0.62 mM and 25.5 mM min-1 mg-1 protein, respectively. TreS I was optimally active at 35° and stable at temperatures of <25 °C. TreS I was stable within a narrow range of pH values, from 6.0 to 7.0. The enzymatic activity was slightly stimulated by Mg2+ and strongly inhibited by Fe3+, Co2+ and Cu2+. TreS I was also strongly inhibited by SDS and weakly by EDTA and TritonX-100.
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Affiliation(s)
- Xiaoyan Zhao
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, PR China
| | - Yunda Chen
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, PR China
| | - Lixia Zhang
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, PR China
| | - Zhimin Li
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, PR China
| | - Xiaoyu Wu
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, PR China; Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables in Jiangxi Province, Nanchang, 330045, PR China
| | - Jinyin Chen
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, PR China; Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables in Jiangxi Province, Nanchang, 330045, PR China
| | - Fei Wang
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, 330045, PR China; Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables in Jiangxi Province, Nanchang, 330045, PR China.
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Wang F, Xu Z, Wang C, Guo Z, Yuan Z, Kang H, Li J, Lu F, Liu Y. Biochemical characterization of a tyrosinase from Bacillus aryabhattai and its application. Int J Biol Macromol 2021; 176:37-46. [PMID: 33571594 DOI: 10.1016/j.ijbiomac.2021.02.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 02/05/2023]
Abstract
Although lots of tyrosinases have been isolated from bacteria, few studies are focused on tyrosinases from Bacillus sp.. In this study, a tyrosinase from B. aryabhattai TCCC 111983 (TYR) was functionally expressed, purified, and then biochemically characterized. The recombinant tyrosinase (rTYR) presented a good catalytic activity in a broad temperature and pH range, retaining over 60% of the relative activity at 30 °C-90 °C and 45% at pH 3.0 to 10.0. Especially, rTYR exhibited 20% of its maximum activity at 0 °C, and it also showed a variable stability towards different effectors. It presented high tolerance towards salinity and chloride, retaining 81% of its original activity in 2 M NaCl. Kinetic parameters indicated that rTYR displayed a relatively good affinity for both l-tyrosine and l-DOPA. Additionally, rTYR demonstrated remarkable advantages on efficient decolorizing azo and anthraquinonic food dyes (carmine and erythrosin), and more five industrial dyes with or without mediators in acidic, neutral, and alkaline conditions. As the first report on the tyrosinase from B. aryabhattai, the aforementioned results indicated that rTYR would be potential for food industrial applications.
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Affiliation(s)
- Fenghua Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zehua Xu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Chen Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zehui Guo
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zhaoting Yuan
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Hongwei Kang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Jingwen Li
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Fuping Lu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Yihan Liu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
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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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Structure-function analysis of silkworm sucrose hydrolase uncovers the mechanism of substrate specificity in GH13 subfamily 17 exo-α-glucosidases. J Biol Chem 2020; 295:8784-8797. [PMID: 32381508 PMCID: PMC7324511 DOI: 10.1074/jbc.ra120.013595] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/05/2020] [Indexed: 01/07/2023] Open
Abstract
The domestic silkworm Bombyx mori expresses two sucrose-hydrolyzing enzymes, BmSUH and BmSUC1, belonging to glycoside hydrolase family 13 subfamily 17 (GH13_17) and GH32, respectively. BmSUH has little activity on maltooligosaccharides, whereas other insect GH13_17 α-glucosidases are active on sucrose and maltooligosaccharides. Little is currently known about the structural mechanisms and substrate specificity of GH13_17 enzymes. In this study, we examined the crystal structures of BmSUH without ligands; in complexes with substrates, products, and inhibitors; and complexed with its covalent intermediate at 1.60-1.85 Å resolutions. These structures revealed that the conformations of amino acid residues around subsite -1 are notably different at each step of the hydrolytic reaction. Such changes have not been previously reported among GH13 enzymes, including exo- and endo-acting hydrolases, such as α-glucosidases and α-amylases. Amino acid residues at subsite +1 are not conserved in BmSUH and other GH13_17 α-glucosidases, but subsite -1 residues are absolutely conserved. Substitutions in three subsite +1 residues, Gln191, Tyr251, and Glu440, decreased sucrose hydrolysis and increased maltase activity of BmSUH, indicating that these residues are key for determining its substrate specificity. These results provide detailed insights into structure-function relationships in GH13 enzymes and into the molecular evolution of insect GH13_17 α-glucosidases.
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Gloster TM. Exploitation of carbohydrate processing enzymes in biocatalysis. Curr Opin Chem Biol 2020; 55:180-188. [PMID: 32203896 DOI: 10.1016/j.cbpa.2020.01.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/26/2020] [Accepted: 01/31/2020] [Indexed: 12/14/2022]
Abstract
Exploitation of enzymes in biocatalytic processes provides scope both in the synthesis and degradation of molecules. Enzymes have power not only in their catalytic efficiency, but their chemoselectivity, regioselectivity, and stereoselectivity means the reactions they catalyze are precise and reproducible. Focusing on carbohydrate processing enzymes, this review covers advances in biocatalysis involving carbohydrates over the last 2-3 years. Given the notorious difficulties in the chemical synthesis of carbohydrates, the use of enzymes for synthesis has potential for significant impact in the future. The use of catabolic enzymes in the degradation of biomass, which can be exploited in the production of biofuels to provide a sustainable and greener source of energy, and the synthesis of molecules that have a range of applications including in the pharmaceutical and food industries will be explored.
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Affiliation(s)
- Tracey M Gloster
- Biomedical Sciences Research Complex, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, UK.
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Liu H, Wang S, Song L, Yuan H, Liu K, Meng W, Wang T. Trehalose Production Using Recombinant Trehalose Synthase in Bacillus subtilis by Integrating Fermentation and Biocatalysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:9314-9324. [PMID: 31352776 DOI: 10.1021/acs.jafc.9b03402] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Trehalose, a stable nonreducing disaccharide, protects biomolecules against environmental stress. However, trehalose production using secretory trehalose synthase (TreS) by Bacillus subtilis has not been well studied. In this study, a mutant TreS was successfully secreted and expressed in B. subtilis WB800N. The extracellular enzyme activity of TreS regulated by the P43 promoter and SPPhoD signal peptide in recombinant B. subtilis WB800N reached 23080.6 ± 1119.4 U/L in a 5-L fermenter after optimizing the culture medium, while xpF, skfA, lytC, and sdpC were knocked out. To reduce maltose consumption, malP and amyE corresponding to maltose transporters were further deleted. To simplify the trehalose production process, we invented a fermentation-coupling biocatalysis process involving recombinant bacteria fermentation to secrete TreS and simultaneous conversion of maltose to trehalose by TreS and found that the conversion rate of maltose to trehalose reached 75.5%, suggesting that this is an efficient strategy for large-scale trehalose production using recombinant B. subtilis.
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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 250353 , People's Republic of China
- Key Laboratory of Shandong Microbial Engineering, School of Bioengineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
| | - Song Wang
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
- Key Laboratory of Shandong Microbial Engineering, School of Bioengineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
| | - Longxiang Song
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
- Key Laboratory of Shandong Microbial Engineering, School of Bioengineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
| | - Haibo Yuan
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
- Key Laboratory of Shandong Microbial Engineering, School of Bioengineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
| | - Kaiquan Liu
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
- Key Laboratory of Shandong Microbial Engineering, School of Bioengineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
| | - Wu Meng
- State Key Laboratory of Biobased Material and Green Papermaking (LBMP) , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
- Key Laboratory of Shandong Microbial Engineering, School of Bioengineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , 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 250353 , People's Republic of China
- Key Laboratory of Shandong Microbial Engineering, School of Bioengineering , Qilu University of Technology (Shandong Academy of Sciences) , Jinan , Shandong 250353 , People's Republic of China
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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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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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19
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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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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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Yan X, Zhu L, Yu Y, Xu Q, Huang H, Jiang L. In-Situ Biocatalytic Production of Trehalose with Autoinduction Expression of Trehalose Synthase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1444-1451. [PMID: 29338242 DOI: 10.1021/acs.jafc.7b06031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We developed an in-situ biocatalytic process that couples autoinduction expression of trehalose synthase (TreS) and whole-cell catalysis for trehalose production. With lactose as the autoinducer, the activity of recombinant TreS in recombinant Escherichia coli was optimized through a visualization method, which resulted in a maximum value of 12 033 ± 730 U/mL in pH-stat fed-batch fermentation mode. Meanwhile, the permeability of the autoinduced E. coli increased significantly, which makes it possible to be directly used as a whole-cell biocatalyst for trehalose production, whereby the byproduct glucose can also act as an extra carbon source. In this case, the final yield of trehalose was improved to 90.5 ± 5.7% and remained as high as 83.2 ± 5.0% at the 10th batch, which is the highest value achieved using recombinant TreS. Finally, an integrated strategy for trehalose production was established, and its advantages compared to the traditional mode have been summarized.
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Affiliation(s)
- Xincheng Yan
- College of Food Science and Light Industry, ‡College of Biotechnology and Pharmaceutical Engineering, §College of Chemical and Molecular Engineering, and ⊥College of Pharmaceutical Sciences, Nanjing Tech University , Nanjing 210009, China
| | - Liying Zhu
- College of Food Science and Light Industry, ‡College of Biotechnology and Pharmaceutical Engineering, §College of Chemical and Molecular Engineering, and ⊥College of Pharmaceutical Sciences, Nanjing Tech University , Nanjing 210009, China
| | - Yadong Yu
- College of Food Science and Light Industry, ‡College of Biotechnology and Pharmaceutical Engineering, §College of Chemical and Molecular Engineering, and ⊥College of Pharmaceutical Sciences, Nanjing Tech University , Nanjing 210009, China
| | - Qing Xu
- College of Food Science and Light Industry, ‡College of Biotechnology and Pharmaceutical Engineering, §College of Chemical and Molecular Engineering, and ⊥College of Pharmaceutical Sciences, Nanjing Tech University , Nanjing 210009, China
| | - He Huang
- College of Food Science and Light Industry, ‡College of Biotechnology and Pharmaceutical Engineering, §College of Chemical and Molecular Engineering, and ⊥College of Pharmaceutical Sciences, Nanjing Tech University , Nanjing 210009, China
| | - Ling Jiang
- College of Food Science and Light Industry, ‡College of Biotechnology and Pharmaceutical Engineering, §College of Chemical and Molecular Engineering, and ⊥College of Pharmaceutical Sciences, Nanjing Tech University , Nanjing 210009, China
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