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Cao W, Watanabe R, Ishii Y, Kirimura K. Enzymatic and selective production of alkyl α-d-glucopyranosides by the α-glucosyl transfer enzyme derived from Xanthomonas campestris WU-9701. J Biosci Bioeng 2023; 136:347-352. [PMID: 37748981 DOI: 10.1016/j.jbiosc.2023.08.007] [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: 05/16/2023] [Revised: 08/18/2023] [Accepted: 08/30/2023] [Indexed: 09/27/2023]
Abstract
Several alkyl glucosides exhibit various bioactivities. 1-Octyl β-d-glucopyranoside produced by organic synthesis is used as a nonionic surfactant. However, no convenient method has been developed for the selective production of alkyl α-glucosides (α-AGs), such as 1-octyl α-d-glucopyranoside (α-OG). Therefore, we developed a simple method for selective production of α-AGs using the glucosyl transfer enzyme XgtA, (E.C. 3.2.1.20), derived from Xanthomonas campestris WU-9701. When 0.80 M alkyl alcohol and 2.5 units XgtA were incubated in 2.0 mL of 30 mM HEPES-NaOH buffer (pH 8.0) containing 1.2 M maltose at 45 °C, a specific α-AG corresponding to each alkyl alcohol (C2-C10) was detected. Under the standard conditions, we examined the selective production of α-OG from 1-octanol and maltose using XgtA. The reaction product was isolated and identified as α-OG via 1H nuclear magnetic resonance and nuclear overhauser effect spectroscopy analyses. No other glucosylated products, such as maltotriose, were detected in the reaction mixture. Under the standard conditions at 45 °C for 96 h, 243 mM α-OG (71 g/L) was produced in one batch production. Moreover, the addition of glucose isomerase to the reaction mixture decreased the concentration of glucose released via the reaction and increased the amount of α-OG produced; 359 mM α-OG (105 g/L) was maximally produced at 96 h. In conclusion, this study demonstrates the selective production of α-AGs using a simple enzymatic reaction, and XgtA has the potential to selectively produce various α-AGs.
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Affiliation(s)
- Wei Cao
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Risa Watanabe
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Yoshitaka Ishii
- Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Kohtaro Kirimura
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan; Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan.
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2
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Siziya IN, Jung JH, Seo MJ, Lim MC, Seo DH. Whole-cell bioconversion using non-Leloir transglycosylation reactions: a review. Food Sci Biotechnol 2023; 32:749-768. [PMID: 37041815 PMCID: PMC10082888 DOI: 10.1007/s10068-023-01283-4] [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: 11/29/2022] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 03/06/2023] Open
Abstract
Microbial biocatalysts are evolving technological tools for glycosylation research in food, feed and pharmaceuticals. Advances in bioengineered Leloir and non-Leloir carbohydrate-active enzymes allow for whole-cell biocatalysts to curtail production costs of purified enzymes while enhancing glucan synthesis through continued enzyme expression. Unlike sugar nucleotide-dependent Leloir glycosyltransferases, non-Leloir enzymes require inexpensive sugar donors and can be designed to match the high value, yield and selectivity of the former. This review addresses the current state of bacterial cell-based production of glucans and glycoconjugates via transglycosylation, and describes how alterations made to microbial hosts to surpass purified enzymes as the preferred mode of catalysis are steadily being acquired through genetic engineering, rational design and process optimization. A comprehensive exploration of relevant literature has been summarized to describe whole-cell biocatalysis in non-Leloir glycosylation reactions with various donors and acceptors, and the characterization, application and latest developments in the optimization of their use.
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Affiliation(s)
- Inonge Noni Siziya
- Department of Food Science and Technology, College of Agriculture and Life Sciences, Jeonbuk National University, Jeonju, 54896 Republic of Korea
- Division of Bioengineering, Incheon National University, Incheon, 22012 Republic of Korea
| | - Jong-Hyun Jung
- Research Division for Biotechnology, Korea Atomic Energy Research Institute, Jeongeup, 56212 Republic of Korea
| | - Myung-Ji Seo
- Division of Bioengineering, Incheon National University, Incheon, 22012 Republic of Korea
| | - Min-Cheol Lim
- Research Group of Consumer Safety, Korea Food Research Institute (KFRI), Jeollabuk-do, 55365 Korea
| | - Dong-Ho Seo
- Department of Food Science and Technology, College of Agriculture and Life Sciences, Jeonbuk National University, Jeonju, 54896 Republic of Korea
- Department of Food Science and Biotechnology, Graduate School of Biotechnology and Institute of Life Science and Resources, Kyung Hee University, Yongin, 17104 Republic of Korea
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3
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Tissopi T, Kumar S, Sadhu A, Mutturi S. Surface display of novel transglycosylating α-glucosidase from Aspergillus neoniger on Pichia pastoris for synthesis of isomaltooligosaccharides. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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An integrative approach to improving the biocatalytic reactions of whole cells expressing recombinant enzymes. World J Microbiol Biotechnol 2021; 37:105. [PMID: 34037845 DOI: 10.1007/s11274-021-03075-6] [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: 03/11/2021] [Accepted: 05/17/2021] [Indexed: 10/21/2022]
Abstract
Biotransformation is a selective, stereospecific, efficient, and environment friendly method, compared to chemical synthesis, and a feasible tool for industrial and pharmaceutical applications. The design of biocatalysts using enzyme engineering and metabolic engineering tools has been widely reviewed. However, less importance has been given to the biocatalytic reaction of whole cells expressing recombinant enzymes. Along with the remarkable development of biotechnology tools, a variety of techniques have been applied to improve the biocatalytic reaction of whole cell biotransformation. In this review, techniques related to the biocatalytic reaction are examined, reorganized, and summarized via an integrative approach. Moreover, equilibrium-shifted biotransformation is reviewed for the first time.
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5
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Glycosyl hydrolase catalyzed glycosylation in unconventional media. Appl Microbiol Biotechnol 2020; 104:9523-9534. [PMID: 33034701 DOI: 10.1007/s00253-020-10924-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/17/2020] [Accepted: 09/21/2020] [Indexed: 02/07/2023]
Abstract
The reversible hydrolytic property of glycosyl hydrolases (GHs) as well as their acceptance of aglycones other than water has provided the abilities of GHs in synthesizing glycosides. Together with desirable physiochemical properties of glycosides and their high commercial values, research interests have been aroused to investigate the synthetic other than the hydrolytic properties of GHs. On the other hand, just like the esterification processes catalyzed by lipases, GH synthetic effectiveness is strongly obstructed by water both thermodynamically and kinetically. Medium engineering by involving organic solvents can be a viable approach to alleviate the obstacles caused by water. However, as native hydrolyases function in water-enriched environments, most GHs display poor catalytic performance in the presence of organic solvents. Some GHs from thermophiles are more tolerant to organic solvents due to their robust folded structures with strong residue interactions. Other than native sources, immobilization, protein engineering, employment of surfactant, and lyophilization have been proved to enhance the GH stability from the native state, which opens up the possibilities for GHs to be employed in unconventional media as synthases. KEY POINTS: • Unconventional media enhance the synthetic ability but destabilize GHs. • Viable approaches are discussed to improve GH stability from the native state. • GHs robust in unconventional media can be valuable industrial synthases.
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6
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Thenchartanan P, Pitchayatanakorn P, Wattana-Amorn P, Ardá A, Svasti J, Jiménez-Barbero J, Kongsaeree PT. Synthesis of long-chain alkyl glucosides via reverse hydrolysis reactions catalyzed by an engineered β-glucosidase. Enzyme Microb Technol 2020; 140:109591. [PMID: 32912700 DOI: 10.1016/j.enzmictec.2020.109591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 11/17/2022]
Abstract
Long-chain alkyl glucosides, such as octyl and decyl β-d-glucopyranosides (OG and DG, respectively), are regarded as a new generation of biodegradable, non-ionic surfactants. Previously, the mutants of Dalbergia cochinchinensis Pierre dalcochinase showed potential in the synthesis of oligosaccharides and alkyl glucosides. In this study, the N189F dalcochinase mutant gave the highest yields of OG and DG synthesis under reverse hydrolysis conditions. The optimized yield of OG (57.5 mol%) was obtained in the reactions containing 0.25 M glucose and 0.3 units of the N189 F mutant in buffer-saturated octanol at 30 °C. The identity of OG and DG products was confirmed by high resolution mass spectrometry (HRMS) and NMR. Consistent with its capability for synthesis, the reactivation kinetics and ITC analysis revealed that the aglycone binding pocket of the N189F mutant was more favorable for long-chain alkyl alcohols than the wild-type dalcochinase, while their glycone binding pockets showed similar affinity for the glucosyl moiety. STD NMR revealed higher interactions at the aglycone sites than the glycone sites. Our results demonstrated a promising potential of the N189F dalcochinase mutant in the future commercial production of long-chain alkyl glucosides via reverse hydrolysis reactions.
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Affiliation(s)
- Pornpanna Thenchartanan
- Department of Biochemistry, Faculty of Science, and Center for Advanced Studies in Tropical Natural Resources, NRU-KU, Kasetsart University, Bangkok 10900, Thailand
| | - Phiraya Pitchayatanakorn
- Department of Biochemistry, Faculty of Science, and Center for Advanced Studies in Tropical Natural Resources, NRU-KU, Kasetsart University, Bangkok 10900, Thailand
| | - Pakorn Wattana-Amorn
- Department of Chemistry, Special Research Unit for Advanced Magnetic Resonance and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Ana Ardá
- CIC bioGUNE (Center for Cooperative Research in Biosciences); Basque Research and Technology Alliance (BRTA), Bizkaia Science and Technology Park, Bizkaia 48160, Spain
| | - Jisnuson Svasti
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Jesús Jiménez-Barbero
- CIC bioGUNE (Center for Cooperative Research in Biosciences); Basque Research and Technology Alliance (BRTA), Bizkaia Science and Technology Park, Bizkaia 48160, Spain; Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, Leioa, Bizkaia 48940, Spain; Ikerbasque, Basque Foundation for Science, Mª Diaz de Haro 3, Bilbao 48013, Spain
| | - Prachumporn T Kongsaeree
- Department of Biochemistry, Faculty of Science, and Center for Advanced Studies in Tropical Natural Resources, NRU-KU, Kasetsart University, Bangkok 10900, Thailand.
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Hoffmann C, Grey C, Pinelo M, Woodley JM, Daugaard AE, Adlercreutz P. Improved Alkyl Glycoside Synthesis by trans‐Glycosylation through Tailored Microenvironments of Immobilized β‐Glucosidase. Chempluschem 2020. [DOI: 10.1002/cplu.201900680] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Christian Hoffmann
- Department of Chemical and Biochemical Engineering Technical University of Denmark Søltofts Plads Building 229 2800 Kgs. Lyngby Denmark
| | - Carl Grey
- Department of Chemistry, Division of Biotechnology Lund University P.O. Box 124 221 00 Lund Sweden
| | - Manuel Pinelo
- Department of Chemical and Biochemical Engineering Technical University of Denmark Søltofts Plads Building 229 2800 Kgs. Lyngby Denmark
| | - John M. Woodley
- Department of Chemical and Biochemical Engineering Technical University of Denmark Søltofts Plads Building 229 2800 Kgs. Lyngby Denmark
| | - Anders E. Daugaard
- Department of Chemical and Biochemical Engineering Technical University of Denmark Søltofts Plads Building 229 2800 Kgs. Lyngby Denmark
| | - Patrick Adlercreutz
- Department of Chemistry, Division of Biotechnology Lund University P.O. Box 124 221 00 Lund Sweden
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8
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Henríquez M, Braun‐Galleani S, Nesbeth DN. Whole cell biosynthetic activity ofKomagataella phaffii(Pichia pastoris) GS115 strains engineered with transgenes encodingChromobacterium violaceumω‐transaminase alone or combined with native transketolase. Biotechnol Prog 2019; 36:e2893. [DOI: 10.1002/btpr.2893] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/18/2019] [Accepted: 08/01/2019] [Indexed: 01/25/2023]
Affiliation(s)
| | | | - Darren N. Nesbeth
- Department of Biochemical EngineeringUniversity College London London UK
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9
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Identification and Quantification of Flavanol Glycosides in Vitis vinifera Grape Seeds and Skins during Ripening. Molecules 2018; 23:molecules23112745. [PMID: 30355957 PMCID: PMC6278495 DOI: 10.3390/molecules23112745] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 10/12/2018] [Accepted: 10/19/2018] [Indexed: 01/18/2023] Open
Abstract
Monomeric and dimeric flavanol glycosides were analyzed in Vitis vinifera grapes and seeds during ripening. An analytical method using ultra-high performance liquid chromatography coupled with a triple quadrupole mass spectrometry (UHPLC-ESI-QQQ-MS/MS) in multiple reaction monitoring (MRM) mode was employed. Three grape varieties (Merlot, Syrah and Tannat) were chosen and grape berries were sampled at different stages of development. Ten monoglycosylated and six diglycosylated flavanol monomers were detected. Twelve monoglycosylated and three diglycosylated flavanol dimers were also detected for all three grape varieties. All diglycosides were detected for the first time in Vitis vinifera grapes, though some of these compounds were only detected in skins or seeds. Furthermore, the evolution of all these compounds was studied, and a decrease in monomeric (epi) catechin monoglycosides was observed during ripening for Tannat, Merlot and Syrah grape skins. The dimers would appear to accumulate in skin tissues up to mid-summer (after veraison) and decrease when grape berries reached maturity.
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10
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Molecular Characterization and Potential Synthetic Applications of GH1 β-Glucosidase from Higher Termite Microcerotermes annandalei. Appl Biochem Biotechnol 2018; 186:877-894. [PMID: 29779183 DOI: 10.1007/s12010-018-2781-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/08/2018] [Indexed: 10/16/2022]
Abstract
A novel β-glucosidase from higher termite Microcerotermes annandalei (MaBG) was obtained via a screening method targeting β-glucosidases with increased activities in the presence of glucose. The purified natural MaBG showed a subunit molecular weight of 55 kDa and existed in a native form as a dimer without any glycosylation. Gene-specific primers designed from its partial amino acid sequences were used to amplify the corresponding 1,419-bp coding sequence of MaBG which encodes a 472-amino acid glycoside hydrolase family 1 (GH1) β-glucosidase. When expressed in Komagataella pastoris, the recombinant MaBG appeared as a ~ 55-kDa protein without glycosylation modifications. Kinetic parameters as well as the lack of secretion signal suggested that MaBG is an intracellular enzyme and not involved in cellulolysis. The hydrolytic activities of MaBG were enhanced in the presence of up to 3.5-4.5 M glucose, partly due to its strong transglucosylation activity, which suggests its applicability in biosynthetic processes. The potential synthetic activities of the recombinant MaBG were demonstrated in the synthesis of para-nitrophenyl-β-D-gentiobioside via transglucosylation and octyl glucoside via reverse hydrolysis. The information obtained from this study has broadened our insight into the functional characteristics of this variant of termite GH1 β-glucosidase and its applications in bioconversion and biotechnology.
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11
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β-Mannanase-catalyzed synthesis of alkyl mannooligosides. Appl Microbiol Biotechnol 2018; 102:5149-5163. [PMID: 29680901 PMCID: PMC5959982 DOI: 10.1007/s00253-018-8997-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 04/04/2018] [Accepted: 04/07/2018] [Indexed: 12/28/2022]
Abstract
β-Mannanases catalyze the conversion and modification of β-mannans and may, in addition to hydrolysis, also be capable of transglycosylation which can result in enzymatic synthesis of novel glycoconjugates. Using alcohols as glycosyl acceptors (alcoholysis), β-mannanases can potentially be used to synthesize alkyl glycosides, biodegradable surfactants, from renewable β-mannans. In this paper, we investigate the synthesis of alkyl mannooligosides using glycoside hydrolase family 5 β-mannanases from the fungi Trichoderma reesei (TrMan5A and TrMan5A-R171K) and Aspergillus nidulans (AnMan5C). To evaluate β-mannanase alcoholysis capacity, a novel mass spectrometry-based method was developed that allows for relative comparison of the formation of alcoholysis products using different enzymes or reaction conditions. Differences in alcoholysis capacity and potential secondary hydrolysis of alkyl mannooligosides were observed when comparing alcoholysis catalyzed by the three β-mannanases using methanol or 1-hexanol as acceptor. Among the three β-mannanases studied, TrMan5A was the most efficient in producing hexyl mannooligosides with 1-hexanol as acceptor. Hexyl mannooligosides were synthesized using TrMan5A and purified using high-performance liquid chromatography. The data suggests a high selectivity of TrMan5A for 1-hexanol as acceptor over water. The synthesized hexyl mannooligosides were structurally characterized using nuclear magnetic resonance, with results in agreement with their predicted β-conformation. The surfactant properties of the synthesized hexyl mannooligosides were evaluated using tensiometry, showing that they have similar micelle-forming properties as commercially available hexyl glucosides. The present paper demonstrates the possibility of using β-mannanases for alkyl glycoside synthesis and increases the potential utilization of renewable β-mannans.
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12
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Shen W, Ji S, Chen L, Zhang Y, Wu X. Synthesis and Properties of Alkoxyethyl β-d-
Xylopyranoside. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Wangzhen Shen
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; Xiangtan University; Xiangtan 411105 Hunan China
| | - Shanwei Ji
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; Xiangtan University; Xiangtan 411105 Hunan China
| | - Langqiu Chen
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; Xiangtan University; Xiangtan 411105 Hunan China
| | - Yanhua Zhang
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; Xiangtan University; Xiangtan 411105 Hunan China
| | - Xiubing Wu
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education; Xiangtan University; Xiangtan 411105 Hunan China
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Chang F, Xue S, Xie X, Fang W, Fang Z, Xiao Y. Carbohydrate-binding module assisted purification and immobilization of β-glucosidase onto cellulose and application in hydrolysis of soybean isoflavone glycosides. J Biosci Bioeng 2018; 125:185-191. [PMID: 29046264 DOI: 10.1016/j.jbiosc.2017.09.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 08/18/2017] [Accepted: 09/07/2017] [Indexed: 12/23/2022]
Abstract
Complicated purification steps, together with the fact that β-glucosidase has to be tolerant to ethanol restricts the application of β-glucosidase in isoflavone aglycone hydrolyzing process. β-Glucosidase Bgl1A(A24S/F297Y) is a promising enzyme in hydrolyzing isoflavones. In this work, six different carbohydrate-binding modules (CBMs), which were from 3 families, were fused to the C-terminal of Bgl1A(A24S/F297Y), respectively, to simplify the enzyme preparation process. The fusion proteins were expressed in Escherichia coli and adsorbed onto cellulose. The Bgl-CBM24 was found to have the highest immobilization efficiency at room temperature within 1 h adsorption. Notably, 1-g cellulose absorbs up to 254.9±5.7 U of Bgl-CBM24. Interestingly, the immobilized Bgl-CBM24 showed improved ethanol tolerance ability, with the IC50 of 35% (v/v) ethanol. Bgl-CBM24 effectively hydrolyze soybean isoflavone glycosides. The hydrolysis rate of daidzin and gemistin was 85.22±3.24% and 82.14±3.82% within 10 min, with the concentrations of daidzein and genistein increased by 6.36±0.18 mM and 3.98±0.22 mM, respectively. In the repetitive hydrolytic cycles, the concentrations of daidzein and genistein still increased by 3.07±0.24 mM and 1.94±0.34 mM in the fourth cycle with 20% (v/v) ethanol. These results suggest that the immobilized Bgl-CBM24 has excellent potential in the preparation of isoflavone aglycones.
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Affiliation(s)
- Fei Chang
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Saisai Xue
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Xiaqing Xie
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China
| | - Wei Fang
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Zemin Fang
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China.
| | - Yazhong Xiao
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China; Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China; Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
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14
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Chang F, Zhang X, Pan Y, Lu Y, Fang W, Fang Z, Xiao Y. Light induced expression of β-glucosidase in Escherichia coli with autolysis of cell. BMC Biotechnol 2017; 17:74. [PMID: 29115967 PMCID: PMC5688802 DOI: 10.1186/s12896-017-0402-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 10/31/2017] [Indexed: 11/10/2022] Open
Abstract
Background β-Glucosidase has attracted substantial attention in the scientific community because of its pivotal role in cellulose degradation, glycoside transformation and many other industrial processes. However, the tedious and costly expression and purification procedures have severely thwarted the industrial applications of β-glucosidase. Thus development of new strategies to express β-glucosidases with cost-effective and simple procedure to meet the increasing demands on enzymes for biocatalysis is of paramount importance. Results Light activated cassette YF1/FixJ and the SRRz lysis system were successfully constructed to produce Bgl1A(A24S/F297Y), a mutant β-glucosidase tolerant to both glucose and ethanol. By optimizing the parameters for light induction, Bgl1A(A24S/F297Y) activity reached 33.22 ± 2.0 U/mL and 249.92 ± 12.25 U/mL in 250-mL flask and 3-L fermentation tank, respectively, comparable to the controls of 34.02 ± 1.96 U/mL and 322.21 ± 10.16 U/mL under similar culture conditions with IPTG induction. To further simplify the production of our target protein, the SRRz lysis gene cassette from bacteriophage Lambda was introduced to trigger cell autolysis. As high as 84.53 ± 6.79% and 77.21 ± 4.79% of the total β-glucosidase were released into the lysate after cell autolysis in 250 mL flasks and 3-L scale fermentation with lactose as inducer of SRRz. In order to reduce the cost of protein purification, a cellulose-binding module (CBM) from Clostridium thermocellum was fused into the C-terminal of Bgl1A(A24S/F297Y) and cellulose was used as an economic material to adsorb the fusion enzyme from the lysate. The yield of the fusion protein could reach 92.20 ± 2.27% after one-hour adsorption at 25 °C. Conclusions We have developed an efficient and inexpensive way to produce β-glucosidase for potential industrial applications by using the combination of light induction, cell autolysis, and CBM purification strategy. Electronic supplementary material The online version of this article (10.1186/s12896-017-0402-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Fei Chang
- School of Life Sciences, Anhui University, Hefei, Anhui, 230601, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui, 230601, China.,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui, 230601, China
| | - Xianbing Zhang
- School of Life Sciences, Anhui University, Hefei, Anhui, 230601, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui, 230601, China.,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui, 230601, China
| | - Yu Pan
- School of Life Sciences, Anhui University, Hefei, Anhui, 230601, China
| | - Youxue Lu
- School of Life Sciences, Anhui University, Hefei, Anhui, 230601, China
| | - Wei Fang
- School of Life Sciences, Anhui University, Hefei, Anhui, 230601, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui, 230601, China
| | - Zemin Fang
- School of Life Sciences, Anhui University, Hefei, Anhui, 230601, China. .,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui, 230601, China. .,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui, 230601, China.
| | - Yazhong Xiao
- School of Life Sciences, Anhui University, Hefei, Anhui, 230601, China. .,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui, 230601, China. .,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui, 230601, China.
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15
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Zhao N, Xu Y, Wang K, Zheng S. Synthesis of Isomalto-Oligosaccharides by Pichia pastoris Displaying the Aspergillus niger α-Glucosidase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:9468-9474. [PMID: 28980463 DOI: 10.1021/acs.jafc.7b04140] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We explored the ability of an Aspergillus niger α-glucosidase displayed on P. pastoris to act as a whole-cell biocatalyst (Pp-ANGL-GCW61) system to synthesize isomalto-oligosaccharides (IMOs). IMOs are a mixture that includes isomaltose (IG2), panose (P), and isomaltotriose (IG3). In this study, the IMOs were synthesized by a hydrolysis-transglycosylation reaction in an aqueous system of maltose. In a 2 mL reaction system, the IMOs were synthesized with a conversion rate of approximately 49% in 2 h when 30% maltose was utilized under optimal conditions by Pp-ANGL-GCW61. Additionally, the 0.5-L reaction system was conducted in a 2-L stirred reactor with a conversion rate of approximately 44% in 2 h. Moreover, the conversion rate was relatively stable after the whole-cell catalyst was reused three times. In conclusion, Pp-ANGL-GCW61 has a high reaction efficiency and operational stability, which makes it a powerful biocatalyst available for industrial scale synthesis.
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Affiliation(s)
- Nannan Zhao
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering, South China University of Technology , Guangzhou 510006, P. R. China
- Guangdong Research Center of Industrial Enzyme and Green Manufacturing Technology, School of Biology and Biological Engineering, South China University of Technology , Guangzhou, 510006, P. R. China
| | - Yanshan Xu
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering, South China University of Technology , Guangzhou 510006, P. R. China
- Guangdong Research Center of Industrial Enzyme and Green Manufacturing Technology, School of Biology and Biological Engineering, South China University of Technology , Guangzhou, 510006, P. R. China
| | - Kuang Wang
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering, South China University of Technology , Guangzhou 510006, P. R. China
- Guangdong Research Center of Industrial Enzyme and Green Manufacturing Technology, School of Biology and Biological Engineering, South China University of Technology , Guangzhou, 510006, P. R. China
| | - Suiping Zheng
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering, South China University of Technology , Guangzhou 510006, P. R. China
- Guangdong Research Center of Industrial Enzyme and Green Manufacturing Technology, School of Biology and Biological Engineering, South China University of Technology , Guangzhou, 510006, P. R. China
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16
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Wang P, Zhang L, Fisher R, Chen M, Liang S, Han S, Zheng S, Sui H, Lin Y. Accurate analysis of fusion expression of Pichia pastoris glycosylphosphatidylinositol-modified cell wall proteins. J Ind Microbiol Biotechnol 2017; 44:1355-1365. [PMID: 28660369 DOI: 10.1007/s10295-017-1962-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 06/15/2017] [Indexed: 11/24/2022]
Abstract
Glycosylphosphatidylinositol (GPI)-anchored glycoproteins have diverse intrinsic functions in yeasts, and they also have different uses in vitro. The GPI-modified cell wall proteins GCW21, GCW51, and GCW61 of Pichia pastoris were chosen as anchoring proteins to construct co-expression strains in P. pastoris GS115. The hydrolytic activity and the amount of Candida antarctica lipase B (CALB) displayed on cell surface increased significantly following optimization of the fusion gene dosage and combination of the homogeneous or heterogeneous cell wall proteins. Maximum CALB hydrolytic activity was achieved at 4920 U/g dry cell weight in strain GS115/CALB-GCW (51 + 51 + 61 + 61) after 120 h of methanol induction. Changes in structural morphology and the properties of the cell surfaces caused by co-expression of fusion proteins were observed by transmission electron microscopy (TEM) and on plates containing cell-wall-destabilizing reagent. Our results suggested that both the outer and inner cell layers were significantly altered by overexpression of GPI-modified cell wall proteins. Interestingly, quantitative analysis of the inner layer components showed an increase in β-1,3-glucan, but no obvious changes in chitin in the strains overexpressing GPI-modified cell wall proteins.
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Affiliation(s)
- Pan Wang
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Li Zhang
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Rebecca Fisher
- Wadsworth Center, New York State Department of Health, Albany, NY, 12201, USA
| | - Meiqi Chen
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Shuli Liang
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Shuangyan Han
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Suiping Zheng
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Haixin Sui
- Wadsworth Center, New York State Department of Health, Albany, NY, 12201, USA
| | - Ying Lin
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, 510006, Guangdong, People's Republic of China.
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