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Hachemaoui S, Ardjani TEA, Brahim H, Alvarez-Idaboy JR. Radical scavenging activity of bromophenol analogs: analysis of kinetics and mechanisms. J Mol Model 2024; 30:205. [PMID: 38867098 DOI: 10.1007/s00894-024-06010-2] [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: 05/19/2024] [Accepted: 06/07/2024] [Indexed: 06/14/2024]
Abstract
CONTEXT This theoretical study explores the antioxidant activity of five bromophenol analogs, with a particular focus on their interaction with different solvent environments of varying polarities. Key findings include the correlation between increased solvent polarity and enhanced antioxidant activity of these analogs, comparable in some instances to ascorbic acid. Notably, compound 5, developed by our research team, demonstrates superior antioxidant activity in both lipid and aqueous solutions, surpassing that of ascorbic acid and other tested analogs. This research contributes to the understanding of bromophenol analogs, presenting the first known kinetic and chemical stability data such as rate constants, pKa values, and branching ratios for reactions with the methylperoxyl radical (CH3OO•). METHODS The computational analyses were conducted using the Gaussian 09 software suite at the M05-2X/6-31 + G(d) computational level. These analyses employed conventional transition state theory to account for various potential mechanisms and effects of solvent polarity on the antioxidant activities of bromophenol analogs. The study meticulously calculated enthalpy under standard conditions (298.15 K and 1 atm) with necessary thermodynamic corrections. Additionally, the Quantum Mechanics-based Test for Overall Radical Scavenging Activity (QMORSA) protocol guided the evaluation of radical scavenging activity, ensuring a comprehensive assessment of the antioxidant potential of the compounds.
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Affiliation(s)
- Slemet Hachemaoui
- Chemistry Laboratory: Synthesis, Properties and Applications, Department of Chemistry, Faculty of Science, University of Saida, Dr. MoulayTahar, 20000, Saïda, Algeria
| | - Taki Eddine Ahmed Ardjani
- Chemistry Laboratory: Synthesis, Properties and Applications, Department of Chemistry, Faculty of Science, University of Saida, Dr. MoulayTahar, 20000, Saïda, Algeria.
| | - Houari Brahim
- Chemistry Laboratory: Synthesis, Properties and Applications, Department of Chemistry, Faculty of Science, University of Saida, Dr. MoulayTahar, 20000, Saïda, Algeria
| | - Juan Raul Alvarez-Idaboy
- Facultad de Química, Departamento de Física y Química Teorica, Universidad Nacional Autonoma de Mexico, D.F.04510, Mexico, Mexico
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Ardjani TEA, Daoudi S, Benaissa MR, Alvarez-Idaboy JR. Strategic design, theoretical insights, synthesis, and unveiling antioxidant potential in a novel ascorbic acid analog. J Mol Model 2024; 30:141. [PMID: 38639786 DOI: 10.1007/s00894-024-05942-z] [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: 03/24/2024] [Accepted: 04/13/2024] [Indexed: 04/20/2024]
Abstract
CONTEXT In this study, we investigated the antioxidant potential of a novel ascorbic acid analog, DsD, assessing its interactions with the methylperoxyl (CH3OO·) radical in aqueous and lipid environments. Our focus was on understanding the acid-base equilibrium and how pH affects DsD's primary reaction mechanisms. Our findings indicate a marked preference for hydrogen atom transfer in lipid media, contrasting with sequential proton loss electron transfer (SPLET) in aqueous solutions. Remarkably, DsD's radical scavenging activity significantly outperforms ascorbic acid, being 4.05 and 9469.70 times more potent in polar and lipid contexts, respectively. This suggests DsD's superior efficacy as an antioxidant, potentially offering enhanced protection in biological systems. Additionally, we have demonstrated DsD's synthetic feasibility through a straightforward condensation reaction between ascorbic acid and 1,2-diaminoethane, followed by comprehensive physicochemical and spectroscopic characterization. METHODS All computational analyses in this study were conducted using the Gaussian 09 software suite, employing the M05-2X functional and the 6-31 + G(d) basis set. Enthalpy calculations were executed under standard conditions (298.15 K and 1 atm), incorporating appropriate thermodynamic corrections. Rate constants were evaluated using transition state theory (TST), and the overall assessment of radical scavenging activity was guided by the Quantum Mechanics-based Test for Overall Radical Scavenging Activity (QMORSA) protocol.
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Affiliation(s)
- Taki Eddine Ahmed Ardjani
- Chemistry Laboratory: Synthesis, Properties and Applications, University, Dr. MoulayTahar, 20000, Saïda, Algeria.
| | - Sofiane Daoudi
- Physical Chemistry Studies Laboratory, University, Dr. MoulayTahar, 20000, Saïda, Algeria
| | - Mohamed Rafik Benaissa
- Physical Chemistry Studies Laboratory, University, Dr. MoulayTahar, 20000, Saïda, Algeria
| | - Juan Raul Alvarez-Idaboy
- Facultad de Química, Departamento de Física y Química Teorica, Universidad Nacional Autonoma de Mexico, 04510, Mexico City, Mexico
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Shen Y, Xia Y, Chen X. Research progress and application of enzymatic synthesis of glycosyl compounds. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12652-8. [PMID: 37428188 DOI: 10.1007/s00253-023-12652-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 07/11/2023]
Abstract
Glucoside compounds are widely found in nature and have garnered significant attention in the medical, cosmetics, and food industries due to their diverse pharmaceutical properties, biological activities, and stable application characteristics. Glycosides are mainly obtained by direct extraction from plants, chemical synthesis, and enzymatic synthesis. Given the challenges associated with plant extraction, such as low conversion rates and the potential for environmental pollution with chemical synthesis, our review focuses on enzymatic synthesis. Here, we reviewed the enzymatic synthesis methods of 2-O-α-D-glucopyranosyl-L-ascorbic acid (AA-2G), 2-O-α-D-glucosyl glycerol (α-GG), arbutin and α-glucosyl hesperidin (Hsp-G), and other glucoside compounds. The types of enzymes selected in the synthesis process are comprehensively analyzed and summarized, as well as a series of enzyme transformation strategies adopted to improve the synthetic yield. KEY POINTS: • Glycosyl compounds have applications in the biomedical and food industries. • Enzymatic synthesis converts substrates into products using enzymes as catalysts. • Substrate bias and specificity are key to improving substrate conversion.
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Affiliation(s)
- Yujuan Shen
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- School of Biotechnology, Jiangnan University, Wuxi, China
| | - Yuanyuan Xia
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China.
- School of Biotechnology, Jiangnan University, Wuxi, China.
| | - Xianzhong Chen
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China.
- School of Biotechnology, Jiangnan University, Wuxi, China.
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Gan T, Fang J, Wang Y, Liu K, Sang Y, Chen H, Lu Y, Zhu L, Chen X. Promoter engineering for efficient production of sucrose phosphorylase in Bacillus subtilis and its application in enzymatic synthesis of 2-O-α-D-glucopyranosyl-L-ascorbic acid. Enzyme Microb Technol 2023; 169:110267. [PMID: 37321017 DOI: 10.1016/j.enzmictec.2023.110267] [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: 02/10/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/17/2023]
Abstract
2-O-α-D-glucopyranosyl-L-ascorbic acid (AA-2G), a stable glucoside derivative of L-ascorbic acid (L-AA), can be one-step synthesized by sucrose phosphorylase (SPase). In this study, we attempted to produce extracellular SPase in Bacillus subtilis WB800 for the food-grade production of AA-2G. The results showed that the secretion of SPases did not require signal peptide. Promoter and its compatibility to target SPase gene were proved to be the key factors for high-level secretion. The strong promoter P43 and synthetic SPase gene derived from Bifidobacterium longum (BloSPase) were selected due to generate a relatively high extracellular activity (0.94 U/mL) for L-AA glycosylation. A highly active dual-promoter system PsigH-100-P43 was further constructed, which produced the highest extracellular and intracellular activity were 5.53 U/mL and 6.85 U/mL in fed-batch fermentation, respectively. Up to 113.58 g/L of AA-2G could be achieved by the supernatant of fermentation broth and a higher yield of 146.42 g/L was obtained by whole-cells biotransformation. Therefore, the optimal dual-promoter system in B. subtilis is suitable for the food-grade scale-up production of AA-2G.
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Affiliation(s)
- Tian Gan
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China; College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jingyi Fang
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China; College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yuxin Wang
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China; College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Kaiqiang Liu
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China; College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yumin Sang
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China; College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hanchi Chen
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China; College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yuele Lu
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China; College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Linjiang Zhu
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China; College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xiaolong Chen
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou 310014, China; College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China.
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Tao X, Su L, Chen S, Wang L, Wu J. Producing 2-O-α-D-glucopyranosyl-L-ascorbic acid by modified cyclodextrin glucosyltransferase and isoamylase. Appl Microbiol Biotechnol 2023; 107:1233-1241. [PMID: 36688952 DOI: 10.1007/s00253-023-12367-w] [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: 08/24/2022] [Revised: 12/27/2022] [Accepted: 01/03/2023] [Indexed: 01/24/2023]
Abstract
In this study, site saturation mutagenesis was performed on the - 3 (R44, D86, S90, and D192) and - 6 subsite (Y163, G175, G176, and N189) of Bacillus stearothermophilus NO2 cyclodextrin glucosyltransferase to enhance its specificity for the donor substrate maltodextrin for 2-O-α-D-glucopyranosyl-L-ascorbic acid (AA-2G) preparation. The AA-2G yields produced by the mutants S90D, G176H, and S90D/G176H were 181, 171, and 185 g/L, respectively. Our previous study found that the mutant K228R/M230L also increased the AA-2G yield. Therefore, the mutants S90D, G176H, S90D/G176H, and K228R/M230L were further used to generate combinatorial mutants. Among these mutants, the highest AA-2G yield (217 g/L) was produced by S90D/K228R/M230L with 500 g/L maltodextrin as the glucosyl donor, which was 56 g/L higher than that produced by wild-type CGTase. In addition, AA-2G was prepared by adding isoamylase to hydrolyze α-1,6 glucosidic linkages in maltodextrin that could not be utilized by CGTase to improve the utilization rate of maltodextrin. The addition of isoamylase reduced the concentration of maltodextrin from 500 to 350 g/L, while the AA-2G yield remained high (208 g/L). The preparation of AA-2G by complexing isoamylase with mutant S90D/K228R/M230L reduced the maltodextrin concentration by 150 g/L, while the AA-2G yield increased by 47 g/L than preparation with wild-type CGTase alone, which laid a foundation for the large-scale preparation of AA-2G. KEY POINTS: • Mutants exhibited improved maltodextrin specificity. • Mutant S90D/K228R/M230L produced high yield of AA-2G with maltodextrin as substrate. • AA-2G was first synthesized by a combination of isoamylase and CGTase.
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Affiliation(s)
- Xiumei Tao
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.,International Joint Laboratory On Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China
| | - Lingqia Su
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.,School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.,International Joint Laboratory On Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China
| | - Sheng Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.,School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.,International Joint Laboratory On Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China
| | - Lei Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China. .,School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China. .,International Joint Laboratory On Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.
| | - Jing Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China. .,School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China. .,International Joint Laboratory On Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.
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6
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Facile and improved synthesis of the 2-O-β-d-glucopyranosyl-l-ascorbic acid. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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7
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Xiao Y, Zhang G, Yang Y, Feng J, Qiu S, Han Z, Geng J, Chen W. Molecular mechanism of acceptor selection in cyclodextrin glycosyltransferases catalyzed ginsenoside transglycosylation. Bioorg Chem 2022; 128:106094. [PMID: 35985160 DOI: 10.1016/j.bioorg.2022.106094] [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: 04/26/2022] [Revised: 08/04/2022] [Accepted: 08/09/2022] [Indexed: 11/18/2022]
Abstract
Understanding the mechanisms of enzyme specificity is increasingly important from a fundamental viewpoint and for practical applications. Transglycosylation has attracted many attentions due to its importance in improving the functional properties of acceptor substrates both in vivo and in vitro. Cyclodextrin glucanotransferase (CGTase) is one of the key enzymes in transglycosylation, it has a broad substrate spectrum and utilizes sugar as the donor. However, little is known about the acceptor selectivity of CGTase, which greatly hampers efforts toward the rational design of desirable transglycosylated derivatives. In this study, we found that the CGTase from Bacillus circulans, BcCGTase, was able to form glycosylated products with diverse ginsenosides. In particular, it not only carries out diverse mono-, di-, and even higher-order glycosylations via the transfer of glucose moieties to the COGlc positions, but also can glycosylate the C3-OH position of ginsenosides. In contrast, another CGTase from Bacillus licheniformis (BlCGTase) showed relatively specific acceptor preference with only several ginsenosides. Structural comparison between BcCGTase and BlCGTase revealed that the Arg74/K81 position within the acceptor-binding sites of BcCGTase/BlCGTase was responsible for the differences in catalytic specificity for ginsenoside F1. Further mutagenesis confirmed their roles in the acceptor selection. In conclusion, our study not only demonstrates the acceptor selectivity of CGTases, but also provides insight into the catalytic mechanism of CGTases, which will potentially increase the utility of CGTase for biosynthesis of new, rationally designed transglycosylated derivatives.
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Affiliation(s)
- Ying Xiao
- Research and Development Center of Chinese Medicine Resources and Biotechnology, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Guoning Zhang
- Research and Development Center of Chinese Medicine Resources and Biotechnology, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yingbo Yang
- Research and Development Center of Chinese Medicine Resources and Biotechnology, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Jiangsu Kanion Pharmaceutical Co., Ltd., Lianyungang 222000, China
| | - Jingxian Feng
- Research and Development Center of Chinese Medicine Resources and Biotechnology, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Shi Qiu
- Research and Development Center of Chinese Medicine Resources and Biotechnology, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Zhuzhen Han
- Research and Development Center of Chinese Medicine Resources and Biotechnology, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jiaran Geng
- Research and Development Center of Chinese Medicine Resources and Biotechnology, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Wansheng Chen
- Research and Development Center of Chinese Medicine Resources and Biotechnology, The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Department of Pharmacy, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai 200003, China.
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8
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Yu X, Zhou Q, Bi L. Ultrasensitive Electrochemical Sensor Based on β-Cyclodextrin–Polyaniline–Phosphomolybdic Acid Matrix for the Detection of Ascorbic Acid. RUSS J APPL CHEM+ 2022. [DOI: 10.1134/s1070427222070163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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9
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Zhou Y, Lv X, Chen L, Zhang H, Zhu L, Lu Y, Chen X. Identification of Process-Related Impurities and Corresponding Control Strategy in Biocatalytic Production of 2- O-α-d-Glucopyranosyl-l-ascorbic Acid Using Sucrose Phosphorylase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:5066-5076. [PMID: 35412325 DOI: 10.1021/acs.jafc.2c00881] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
2-O-α-d-Glucopyranosyl-l-ascorbic acid (AA-2G) is an ideal substitute for l-ascorbic acid because of its remarkable stability and improved biological activity, which can be easily applied in cosmetic, food, and medicine fields. However, impurity identification and control are significant procedures during the manufacturing of AA-2G. This study assessed a manufacturing routine of AA-2G synthesized by sucrose phosphorylase (SPase). First, three unknown process-related impurities were observed, which were further identified as 3-O-α-d-glucopyranosyl- l-ascorbic acid (impurity I), 2-O-α-d-glucopyranosyl-l-dehydroascorbic acid (impurity II), and 13-O-α-d-glucopyranosyl-2-O-α-d-glucopyranosyl-l-ascorbic acid (impurity III), respectively. Second, a comprehensive formation pathway of impurities was elucidated, and specific strategies corresponding to controlling each impurity were also proposed. Specifically, the content of impurity I can be reduced by 50% by fine tuning reaction conditions. The impurity II-free purification process was also achieved by applying a low concentration of alkali. Finally, a semi-rational design was introduced, and a single mutant L343F was obtained by site-directed mutagenesis, which reduced impurities I and III by 63.9 and 100%, respectively, without affecting the transglycosylation activity. It is expected that the reported impurity identification and control strategies during the AA-2G production will facilitate its industrial production.
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Affiliation(s)
- Yaoyao Zhou
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Xuhao Lv
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Luyi Chen
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Hui Zhang
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Linjiang Zhu
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Yuele Lu
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
| | - Xiaolong Chen
- Institute of Fermentation Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People's Republic of China
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Yin X, Chen K, Cheng H, Chen X, Feng S, Song Y, Liang L. Chemical Stability of Ascorbic Acid Integrated into Commercial Products: A Review on Bioactivity and Delivery Technology. Antioxidants (Basel) 2022; 11:153. [PMID: 35052657 PMCID: PMC8773188 DOI: 10.3390/antiox11010153] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 01/27/2023] Open
Abstract
The L-enantiomer of ascorbic acid is commonly known as vitamin C. It is an indispensable nutrient and plays a key role in retaining the physiological process of humans and animals. L-gulonolactone oxidase, the key enzyme for the de novo synthesis of ascorbic acid, is lacking in some mammals including humans. The functionality of ascorbic acid has prompted the development of foods fortified with this vitamin. As a natural antioxidant, it is expected to protect the sensory and nutritional characteristics of the food. It is thus important to know the degradation of ascorbic acid in the food matrix and its interaction with coexisting components. The biggest challenge in the utilization of ascorbic acid is maintaining its stability and improving its delivery to the active site. The review also includes the current strategies for stabilizing ascorbic acid and the commercial applications of ascorbic acid.
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Affiliation(s)
- Xin Yin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.Y.); (K.C.); (H.C.); (X.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Kaiwen Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.Y.); (K.C.); (H.C.); (X.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Hao Cheng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.Y.); (K.C.); (H.C.); (X.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xing Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.Y.); (K.C.); (H.C.); (X.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shuai Feng
- Luwei Pharmaceutical Group Co., Ltd., Shuangfeng Industrial Park, Zibo 255195, China;
| | - Yuanda Song
- Colin Raledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China;
| | - Li Liang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (X.Y.); (K.C.); (H.C.); (X.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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Zhou Y, Gan T, Jiang R, Chen H, Ma Z, Lu Y, Zhu L, Chen X. Whole-cell catalytic synthesis of 2-O-α-glucopyranosyl-l-ascorbic acid by sucrose phosphorylase from Bifidobacterium breve via a batch-feeding strategy. Process Biochem 2022. [DOI: 10.1016/j.procbio.2021.11.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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12
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Qi X, Shao J, Cheng Y, He X, Li Y, Jia H, Yan M. Biocatalytic synthesis of 2-O-α-D-glucopyranosyl-L-ascorbic acid using an extracellular expressed α-glucosidase from Oryza sativa. Biotechnol J 2021; 16:e2100199. [PMID: 34392609 DOI: 10.1002/biot.202100199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/31/2021] [Accepted: 08/12/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND 2-O-α-D-Glucopyranosyl-L-ascorbic acid (AA-2G) is an important derivative of L-ascorbic acid (L-AA), which has the distinct advantages of non-reducibility, antioxidation, and reproducible decomposition into L-AA and glucose. Enzymatic synthesis is a preferred method for AA-2G production over alternative chemical synthesis owing to the regioselective glycosylation reaction. α-Glucosidase, an enzyme classed into O-glycoside hydrolases, might be used in glycosylation reactions to synthesize AA-2G. MAIN METHODS AND MAJOR RESULTS Here, an α-glucosidase from Oryza sativa was heterologously produced in Pichia pastoris GS115 and used for biosynthesis of AA-2G with few intermediates and byproducts. The extracellular recombinant α-glucosidase (rAGL) reached 9.11 U mL-1 after fed-batch cultivation for 102 h in a 5 L fermenter. The specific activity of purified rAGL is 49.83 U mg-1 at 37°C and pH 4.0. The optimal temperature of rAGL was 65°C, and it was stable below 55°C. rAGL was active over the range of pH 3.0-7.0, with the maximal activity at pH 4.0. Under the condition of 37°C, pH 4.0, equimolar maltose and ascorbic acid sodium salt, 8.7 ± 0.4 g L-1 of AA-2G was synthesized by rAGL. CONCLUSIONS AND IMPLICATIONS The production of rAGL in P. pastoris was proved to be beneficial in providing enough enzyme and promoting biocatalytic synthesis of AA-2G. These studies lay the basis for the industrial application of α-glucosidase. GRAPHICAL ABSTRACT LAY SUMMARY 2-O-α-D-Glucopyranosyl-L-ascorbic acid (AA-2G) is an important industrial derivative of L-ascorbic acid (L-AA), which has the distinct advantages of non-reducibility, antioxidation, and reproducible decomposition into L-AA and glucose. In this study, the authors characterized an α-glucosidase from Oryza sativa, which was recombinantly produced in Pichia pastoris GS115, and its potential for AA-2G production via transglycosylation of L-AA was investigated. These studies lay the basis for the industrial application of recombinant α-glucosidase.
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Affiliation(s)
- Xuelian Qi
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, People's Republic of China
| | - Junlan Shao
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, People's Republic of China
| | - Yinchu Cheng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, People's Republic of China
| | - Xiaoying He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, People's Republic of China
| | - Yan Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, People's Republic of China
| | - Honghua Jia
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, People's Republic of China
| | - Ming Yan
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, People's Republic of China
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13
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2-O-D-glucopyranosyl-L-ascorbic acid: Properties, production, and potential application as a substitute for L-ascorbic acid. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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14
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Song K, Sun J, Wang W, Hao J. Heterologous Expression of Cyclodextrin Glycosyltransferase my20 in Escherichia coli and Its Application in 2- O-α-D-Glucopyranosyl-L-Ascorbic Acid Production. Front Microbiol 2021; 12:664339. [PMID: 34122378 PMCID: PMC8195388 DOI: 10.3389/fmicb.2021.664339] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/12/2021] [Indexed: 12/03/2022] Open
Abstract
In this study, the cgt gene my20, which encodes cyclodextrin glycosyltransferase (CGTase) and was obtained by the metagenome sequencing of marine microorganisms from the Mariana Trench, was codon optimized and connected to pET-24a for heterologous expression in Escherichia coli BL21(DE3). Through shaking flask fermentation, the optimized condition for recombinant CGTase expression was identified as 20°C for 18 h with 0.4 mM of isopropyl β-D-L-thiogalactopyranoside. The recombinant CGTase was purified by Ni2+-NTA resin, and the optimum pH and temperature were identified as pH 7 and 80°C, respectively. Activity was stable over wide temperature and pH ranges. After purification by Ni2+-NTA resin, the specific activity of the CGTase was 63.3 U/mg after 67.3-fold purification, with a final yield of 43.7%. In addition, the enzyme was used to transform L-ascorbic acid into 2-O-α-D-glucopyranosyl-L-ascorbic acid (AA-2G). The maximal AA-2G production reached 28 g/L, at 40°C, pH 4, 24 h reaction time, 50 g/L donor concentration, and 50 U/g enzyme dosage. The superior properties of recombinant CGTase strongly facilitate the industrial production of AA-2G.
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Affiliation(s)
- Kai Song
- College of Food Sciences and Technology, Shanghai Ocean University, Shanghai, China
| | - Jingjing Sun
- Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Jiangsu Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resource, Lianyungang, China
| | - Wei Wang
- Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Jiangsu Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resource, Lianyungang, China
| | - Jianhua Hao
- Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Jiangsu Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resource, Lianyungang, China
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15
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Lim CH, Rasti B, Sulistyo J, Hamid MA. Comprehensive study on transglycosylation of CGTase from various sources. Heliyon 2021; 7:e06305. [PMID: 33665455 PMCID: PMC7907775 DOI: 10.1016/j.heliyon.2021.e06305] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 01/19/2021] [Accepted: 02/12/2021] [Indexed: 02/07/2023] Open
Abstract
Transglycosylation is the in-vivo or in-vitro process of transferring glycosyl groups from a donor to an acceptor, which is usually performed by enzymatic reactions because of their simplicity, low steric hindrance, high region-specificity, low production cost, and mild processing conditions. One of the enzymes commonly used in the transglycosylation reaction is cyclodextrin glucanotransferase (CGTase). The transglycosylated products, catalyzed by CGTase, are widely used in food additives, supplements, and personal care and cosmetic products. This is due to improvements in the solubility, stability, bioactivity and length of the synthesized products. This paper's focus is on the importance of enzymes used in the transglycosylation reaction, their characteristics and mechanism of action, sources and production yield, and donor and acceptor specificities. Moreover, the influence of intrinsic and extrinsic factors on the enzymatic reaction, catalysis of glycosidic linkages, and advantages of CGTase transglycosylation reactions are discussed in detail.
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Affiliation(s)
- Chin Hui Lim
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia
| | - Babak Rasti
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia
| | - Joko Sulistyo
- Faculty of Biotechnology, University of Surabaya, Jalan Ngagel Jaya Selatan, Surabaya, 60294, Indonesia
| | - Mansoor Abdul Hamid
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia
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16
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Richardson AT, McGhie TK, Cordiner SB, Stephens TTH, Larsen DS, Laing WA, Perry NB. 2-O-β-d-Glucopyranosyl l-Ascorbic Acid, a Stable Form of Vitamin C, Is Widespread in Crop Plants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:966-973. [PMID: 33434024 DOI: 10.1021/acs.jafc.0c06330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
2-O-β-d-Glucopyranosyl l-ascorbic acid (AA-2βG) is a stable, bioavailable vitamin C (AA) derivative. We report the distribution and seasonal variation of AA-2βG in apples and its occurrence in other domesticated crops and in wild harvested Ma̅ori foods. Liquid chromatography-mass spectrometry analyses showed high AA-2βG concentrations in crab apples (Malus sylvestris) but low concentrations in domesticated apples. Leaves of crab and domesticated apple cultivars contained similar intermediate AA-2βG concentrations. Fruits and leaves of other crops were analyzed: mainly Rosaceae but also Actinidiaceae and Ericaceae. AA-2βG was detected in all leaves (0.5-6.1 mg/100 g fr. wt.) but was at lower concentrations in most fruits (0.0-0.5 mg/100 g fr. wt.) except for crab apples (79.4 mg/100 g fr. wt.). Ma̅ori foods from Solanaceae, Piperaceae, Asteraceae, and a fern of Aspleniaceae also contained AA-2βG. This extensive occurrence suggests a general role in AA metabolism for AA-2βG.
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Affiliation(s)
- Alistair T Richardson
- Department of Chemistry, University of Otago, P. O. Box 56, Dunedin 9054, New Zealand
| | - Tony K McGhie
- The New Zealand Institute for Plant and Food Research Limited, Private Bag, Palmerston North 11600, New Zealand
| | - Sarah B Cordiner
- The New Zealand Institute for Plant and Food Research Limited, Private Bag, Palmerston North 11600, New Zealand
| | - Teiarere T H Stephens
- The New Zealand Institute for Plant and Food Research Limited, Private Bag, Palmerston North 11600, New Zealand
| | - David S Larsen
- Department of Chemistry, University of Otago, P. O. Box 56, Dunedin 9054, New Zealand
| | - William A Laing
- The New Zealand Institute for Plant and Food Research Limited, Private Bag, Palmerston North 11600, New Zealand
| | - Nigel B Perry
- Department of Chemistry, University of Otago, P. O. Box 56, Dunedin 9054, New Zealand
- The New Zealand Institute for Plant and Food Research Limited, Department of Chemistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
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17
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Ara KZG, Linares-Pastén JA, Jönsson J, Viloria-Cols M, Ulvenlund S, Adlercreutz P, Karlsson EN. Engineering CGTase to improve synthesis of alkyl glycosides. Glycobiology 2020; 31:603-612. [PMID: 33270133 PMCID: PMC8176775 DOI: 10.1093/glycob/cwaa109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 11/18/2020] [Accepted: 11/18/2020] [Indexed: 11/14/2022] Open
Abstract
Alkyl glycoside surfactants with elongated carbohydrate chains are useful in different applications due to their improved biocompatibility. Cyclodextrin glucanotransferases can catalyze the elongation process through the coupling reaction. However, due to the presence of a hydrophobic tail, the interaction between an alkyl glycoside acceptor and the active site residues is weaker than the interaction with maltooligosaccharides at the corresponding site. Here we report the mutations of F197, G263 and E266 near the acceptor subsites in the CGTase CspCGT13 from Carboxydocella sp. The results showed that substitutions of both F197 and G263 were important for the binding of acceptor substrate dodecyl maltoside during coupling reaction. The double mutant F197Y/G263A showed enhanced coupling activity and displayed a 2-fold increase of the primary coupling product using γ-cyclodextrin as donor when compared to wildtype CspCGT13. Disproportionation activity was also reduced, which was also the case for another double mutant (F197Y/E266A) that however not showed the corresponding increase in coupling. A triple mutant F197Y/G263A/E266A maintained the increase in primary coupling product (1.8-fold increase) using dodecyl maltoside as acceptor, but disproportionation was approximately at the same level as in the double mutants. In addition, hydrolysis of starch was slightly increased by the F197Y and G263A substitutions, indicating that interactions at both positions influenced the selectivity between glycosyl and alkyl moieties.
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Affiliation(s)
| | | | - Jonas Jönsson
- Biotechnology, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden
| | - Maria Viloria-Cols
- Biotechnology, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden.,Enza Biotech AB, Scheelevägen 22, 22363 Lund, Sweden
| | | | - Patrick Adlercreutz
- Biotechnology, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden
| | - Eva Nordberg Karlsson
- Biotechnology, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden
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18
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Richardson AT, Cho J, McGhie TK, Larsen DS, Schaffer RJ, Espley RV, Perry NB. Discovery of a stable vitamin C glycoside in crab apples (Malus sylvestris). PHYTOCHEMISTRY 2020; 173:112297. [PMID: 32070800 DOI: 10.1016/j.phytochem.2020.112297] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 02/08/2020] [Accepted: 02/08/2020] [Indexed: 06/10/2023]
Abstract
Non-targeted LC-MS metabolomics on fruit of three wild and domesticated apple species (Malus sylvestris, M. sieversii and M. domestica) showed that two crab apple (M. sylvestris) accessions were distinguished by high concentrations of an ascorbic acid glycoside (AAG). This was partly purified, but key NMR signals were masked by inseparable sucrose. Reference samples of 2-O-β-D-glucopyranosyl L-ascorbic acid and 2-O-β-D-galactopyranosyl L-ascorbic acid were synthesised, but both coincided with the crab apple AAG on LC-MS. Peracetylation of the crab apple extract allowed both purification and characterisation, and the AAG was proven to be 2-O-β-D-glucopyranosyl L-ascorbic acid by comparison of 1H NMR, HRMS and HPLC data with synthesised peracetylated ascorbyl glycoside standards. The stability of the natural AA 2-β-glycoside was similar to synthetic 2-O-α-D-glucopyranosyl L-ascorbic acid, used widely in cosmetic and pharmaceutical products. This discovery in crab apples (Rosaceae) is only the fourth reported occurrence of any ascorbyl glycoside from plants, the others being from Cucurbitaceae, Solanaceae and Brassicaceae. It is hypothesised that AAGs may be more widespread in plants than currently realised.
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Affiliation(s)
| | - Jung Cho
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland, 1142, New Zealand
| | - Tony K McGhie
- Plant & Food Research, Private Bag 11600, Palmerston North, New Zealand
| | - David S Larsen
- Department of Chemistry, University of Otago, P. O. Box 56, Dunedin, New Zealand
| | - Robert J Schaffer
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland, 1142, New Zealand
| | - Richard V Espley
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 92169, Auckland, 1142, New Zealand
| | - Nigel B Perry
- Department of Chemistry, University of Otago, P. O. Box 56, Dunedin, New Zealand; Plant & Food Research, Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand.
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19
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Kumar J, Kumar N, Sati N, Hota PK. Antioxidant properties of ethenyl indole: DPPH assay and TDDFT studies. NEW J CHEM 2020. [DOI: 10.1039/d0nj01317j] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Ethenyl indole exhibits antioxidant activity in a substituent dependent manner. Ethenyls bearing strong electron withdrawing substituents show weak or no antioxidant activities, whereas ethenyls with electron donating substituents exhibit antioxidant properties comparable to vitamin E.
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Affiliation(s)
- Jagdeep Kumar
- Department of Chemistry
- School of Sciences
- Hemvati Nandan Bahuguna Garhwal University
- Srinagar (Garhwal)
- India
| | - Naresh Kumar
- Department of Chemistry
- School of Sciences
- Hemvati Nandan Bahuguna Garhwal University
- Srinagar (Garhwal)
- India
| | - Nitin Sati
- Department of Pharmaceutical Sciences
- School of Sciences
- Hemvati Nandan Bahuguna Garhwal University
- Srinagar (Garhwal)
- India
| | - Prasanta Kumar Hota
- Department of Chemistry
- School of Sciences
- Hemvati Nandan Bahuguna Garhwal University
- Srinagar (Garhwal)
- India
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20
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Garcia VADS, Borges JG, Vanin FM, Carvalho RAD. Vitamin C stability in acerola and camu-camu powder obtained by spray drying. BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2020. [DOI: 10.1590/1981-6723.23719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Acerola and camu-camu fruits possess high vitamin C content. However, since these fruits are little consumed in their fresh form, it is important to consider that vitamin C can be oxidized depending on storage conditions. Thus, this study aimed to produce acerola and camu-camu powders by spray drying to maintain the stability of their vitamin C content during storage. Acerola and camu-camu powders were characterized in relation to their physicochemical characteristics, antioxidant activity, and vitamin C concentration and stability under different storage conditions (30 °C and 40 °C, 75% relative humidity). In general, the powders were proven to be stable, with low water activity (< 0.40) and humidity (< 4.0 g/100 g powder), as well as high vitamin C concentrations (1593.2 and 6690.4 mg/100 g of powder for acerola and camu-camu, respectively). Furthermore, we observed a high antioxidant activity by ABTS●+, DPPH• and FRAP assays. The powders stored at lower temperature (30 °C) showed higher vitamin C stability. In conclusion, acerola and camu-camu powders produced by spray drying are potential sources of vitamin C and active compounds and are therefore suitable for several food industry applications.
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21
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Lee S, Lim J, Lee JH, Ju H, Heo J, Kim Y, Kim S, Yu HY, Ryu CM, Lee SY, Han JM, Oh YM, Lee H, Jang H, Yoon TJ, Ahn HS, Kim K, Kim HR, Roe JS, Chung HM, Son J, Kim JS, Shin DM. Ascorbic Acid 2-Glucoside Stably Promotes the Primitiveness of Embryonic and Mesenchymal Stem Cells Through Ten-Eleven Translocation- and cAMP-Responsive Element-Binding Protein-1-Dependent Mechanisms. Antioxid Redox Signal 2020; 32:35-59. [PMID: 31656084 DOI: 10.1089/ars.2019.7743] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Aims: The naive or primitive states of stem cells (SCs) residing in specific niches are unstable and difficult to preserve in vitro. Vitamin C (VitC), in addition to suppressing oxygen radicals, exerts pleiotropic effects to preserve the core functions of SCs. However, this compound is labile and readily oxidized, resulting in cellular toxicity and preventing its reliable application in this context. We found that a VitC derivative, ascorbic acid 2-glucoside (AA2G), stably maintains the naive pluripotency of murine embryonic SCs (mESCs) and the primitiveness of human mesenchymal SCs (hMSCs) without cellular toxicity. Results: The beneficial effects of AA2G and related molecular mechanisms were evaluated in mESCs, induced pluripotent-SCs (iPSCs), and hMSCs. AA2G was stable in aqueous solution and barely induced cellular toxicity in cultured SCs, unlike VitC. AA2G supplementation recapitulated the well-known effects of VitC, including induction of ten-eleven translocation-dependent DNA demethylation in mESCs and suppression of p53 during generation of murine iPSCs. Furthermore, supplementation of hMSCs with AA2G improved therapeutic outcomes in an asthma mouse model by promoting their self-renewal, engraftment, and anti-inflammatory properties. Particularly, activation of the cAMP-responsive element-binding protein-1 (CREB1) pathway contributed to the ability of AA2G to maintain naive pluripotency of mESCs and functionality of hMSCs. Innovation and Conclusion: Given its long-lasting effects and low cellular toxicity, AA2G supplementation is useful to support the naive pluripotency of mESCs and the primitiveness of hMSCs, affecting their developmental potency and therapeutic efficacy. Furthermore, we demonstrate the significance of the CREB1 pathway in the mechanism of action of AA2G.
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Affiliation(s)
- Seungun Lee
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
| | - Jisun Lim
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
| | - Ji-Heon Lee
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Hyein Ju
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
| | - Jinbeom Heo
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
| | - YongHwan Kim
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
| | - Sujin Kim
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
| | - Hwan Yeul Yu
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
| | - Chae-Min Ryu
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
| | - So-Yeon Lee
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jung-Min Han
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Yeon-Mok Oh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Ho Lee
- Research Institute, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Hyonchol Jang
- Research Institute, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | | | - Hee-Sung Ahn
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kyunggon Kim
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hwa-Ryeon Kim
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Korea
| | - Jae-Seok Roe
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Korea
| | - Hyung-Min Chung
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Jaekyoung Son
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jong Soo Kim
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Dong-Myung Shin
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
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22
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Gérard V, Ay E, Graff B, Morlet-Savary F, Galopin C, Mutilangi W, Lalevée J. Ascorbic Acid Derivatives as Potential Substitutes for Ascorbic Acid To Reduce Color Degradation of Drinks Containing Ascorbic Acid and Anthocyanins from Natural Extracts. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12061-12071. [PMID: 31588743 DOI: 10.1021/acs.jafc.9b05049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ascorbic acid is widely used in the food industry as a source of vitamin C or as antioxidant. However, it degrades quickly in beverages at acidic pH and can accelerate the degradation of anthocyanins, natural dyes used in beverages, leading to a loss of color. In this work, we investigated the possibility to replace ascorbic acid by ascorbic acid derivatives to prevent its degradation effect on anthocyanins from natural extracts (black carrot, grape juice, and purple sweet potato). For this, the thermal and photolytic stabilities under air and under N2 of ascorbic acid (as reference) and of some ascorbic acid derivatives (3-O-ethyl-l-ascorbic acid, 2-O-α-d-glucopyranosyl-l-ascorbic acid, l-ascorbic acid 2-phosphate sesquimagnesium salt hydrate, l-ascorbyl 2,6-dibutyrate, glyceryl ascorbate, (+)-5,6-O-isopropylidene-l-ascorbic acid), soluble in aqueous model beverages, were studied alone and in the presence of anthocyanins from the natural extracts in citrate buffer at pH 3. The stability was followed by UV-visible spectrometry. To extend the investigation, some properties of the ascorbic acid derivatives (pKa, oxidation potential, bond dissociation energy, ionization potential) were also determined. Moreover, the addition of chlorogenic acid was examined to further stabilize the mixture of anthocyanins with 2-O-α-d-glucopyranosyl-l-ascorbic acid, a promising ascorbic acid derivative.
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Affiliation(s)
- Violaine Gérard
- Université de Haute-Alsace, CNRS, IS2M UMR 7361 , F-68100 Mulhouse , France
- Université de Strasbourg , F-67000 Strasbourg , France
| | - Emel Ay
- Université de Haute-Alsace, CNRS, IS2M UMR 7361 , F-68100 Mulhouse , France
- Université de Strasbourg , F-67000 Strasbourg , France
| | - Bernadette Graff
- Université de Haute-Alsace, CNRS, IS2M UMR 7361 , F-68100 Mulhouse , France
- Université de Strasbourg , F-67000 Strasbourg , France
| | - Fabrice Morlet-Savary
- Université de Haute-Alsace, CNRS, IS2M UMR 7361 , F-68100 Mulhouse , France
- Université de Strasbourg , F-67000 Strasbourg , France
| | - Christophe Galopin
- PepsiCo Global Beverage Research and Development , 100 East Stevens Avenue , Valhalla , New York 10595 , United States
| | - William Mutilangi
- PepsiCo Global Beverage Research and Development , 100 East Stevens Avenue , Valhalla , New York 10595 , United States
| | - Jacques Lalevée
- Université de Haute-Alsace, CNRS, IS2M UMR 7361 , F-68100 Mulhouse , France
- Université de Strasbourg , F-67000 Strasbourg , France
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23
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Baschieri A, Amorati R, Benelli T, Mazzocchetti L, D'Angelo E, Valgimigli L. Enhanced Antioxidant Activity under Biomimetic Settings of Ascorbic Acid Included in Halloysite Nanotubes. Antioxidants (Basel) 2019; 8:E30. [PMID: 30691231 PMCID: PMC6406349 DOI: 10.3390/antiox8020030] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 12/31/2022] Open
Abstract
Antioxidant activity of native vitamin C (ascorbic acid, AH₂) is hampered by instability in solution. Selective loading of AH₂ into the inner lumen of natural halloysite nanotubes (HNT) yields a composite nanoantioxidant (HNT/AH₂), which was characterized and investigated for its reactivity with the persistent 1,1-diphenyl-2-picrylhydrazyl (DPPH•) radical and with transient peroxyl radicals in the inhibited autoxidation of organic substrates, both in organic solution (acetonitrile) and in buffered (pH 7.4) water in comparison with native AH₂. HNT/AH₂ showed excellent antioxidant performance being more effective than native ascorbic acid by 131% in acetonitrile and 290% (three-fold) in aqueous solution, under identical settings. Reaction with peroxyl radicals has a rate constant of 1.4 × 10⁶ M-1 s-1 and 5.1 × 10⁴ M-1 s-1, respectively, in buffered water (pH 7.4) and acetonitrile, at 30 °C. Results offer physical understanding of the factors governing HNT/AH₂ reactivity. Improved performance of HNT/AH₂ is unprecedented among forms of stabilized ascorbic acid and its relevance is discussed on kinetic grounds.
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Affiliation(s)
- Andrea Baschieri
- Department of Chemistry "G. Ciamician", University of Bologna, Via S. Giacomo 11, I-40126 Bologna, Italy.
| | - Riccardo Amorati
- Department of Chemistry "G. Ciamician", University of Bologna, Via S. Giacomo 11, I-40126 Bologna, Italy.
| | - Tiziana Benelli
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
| | - Laura Mazzocchetti
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
| | - Emanuele D'Angelo
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
| | - Luca Valgimigli
- Department of Chemistry "G. Ciamician", University of Bologna, Via S. Giacomo 11, I-40126 Bologna, Italy.
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24
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Jiang Y, Zhou J, Wu R, Xin F, Zhang W, Fang Y, Ma J, Dong W, Jiang M. Heterologous expression of cyclodextrin glycosyltransferase from Paenibacillus macerans in Escherichia coli and its application in 2-O-α-D-glucopyranosyl-L-ascorbic acid production. BMC Biotechnol 2018; 18:53. [PMID: 30170578 PMCID: PMC6119282 DOI: 10.1186/s12896-018-0463-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 08/22/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cyclodextrin glucanotransferase (CGTase) can transform L-ascorbic acid (L-AA, vitamin C) to 2-O-α-D-glucopyranosyl-L-ascorbic acid (AA-2G), which shows diverse applications in food, cosmetic and pharmaceutical industries. RESULTS In this study, the cgt gene encoding α-CGTase from Paenibacillus macerans was codon-optimized (opt-cgt) and cloned into pET-28a (+) for intracellular expression in E. coli BL21 (DE3). The Opt-CGT was purified by Ni2+-NTA resin with a 55% recovery, and specific activity was increased significantly from 1.17 to 190.75 U·mg- 1. In addition, the enzyme was adopted to transform L-AA into 9.1 g/L of AA-2G. Finally, more economic substrates, including β-cyclodextrin, soluble starch, corn starch and cassava starch could also be used as glycosyl donors, and 4.9, 3.5, 1.3 and 1.5 g/L of AA-2G were obtained, respectively. CONCLUSIONS N-terminal amino acid is critical to the activity of CGTase suggested by its truncation study. Furthermore, when the Opt-CGT was flanked by His6-tags on the C- and N-terminal, the recovery of purification by Ni2+-NTA resin is appreciably enhanced. α-cyclodextrin was the ideal glycosyl donor for AA-2G production. In addition, the selection of low cost glycosyl donors would make the process of AA-2G production more economically competitive.
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Affiliation(s)
- Yujia Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
| | - Jie Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Ruofan Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Wenming Zhang
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Yan Fang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Jiangfeng Ma
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, People's Republic of China
| | - Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China.
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, People's Republic of China.
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800, People's Republic of China.
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, People's Republic of China.
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Tao X, Wang T, Su L, Wu J. Enhanced 2- O-α-d-Glucopyranosyl-l-ascorbic Acid Synthesis through Iterative Saturation Mutagenesis of Acceptor Subsite Residues in Bacillus stearothermophilus NO2 Cyclodextrin Glycosyltransferase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:9052-9060. [PMID: 30091914 DOI: 10.1021/acs.jafc.8b03080] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Low synthesis yields of the l-ascorbic acid (l-AA) derivative 2- O-α-d-glucopyranosyl-l-ascorbic acid (AA-2G) limit its application in the food industry. In this work, the AA-2G synthesis yield of Bacillus stearothermophilus NO2 cyclodextrin glycosyltransferase (CGTase) was improved. Nine residues within 10 Å of the catalytic residue Glu253 displaying ≤30% conservation and located in the acceptor subsite were selected for iterative saturation mutagenesis. The best mutant, K228R/M230L, produced a higher AA-2G yield with maltodextrin as the glucosyl donor than that produced by its parent wild-type. The l-AA Km values of the mutant K228R/M230L decreased by 35%, whereas the kcat/ Km increased by 2.69-fold. Kinetic analysis indicated that K228R/M230L displayed enhanced l-AA specificity. These results demonstrate that acceptor subsite residues play an important role in acceptor substrate specificity. Mutant K228R/M230L afforded the highest AA-2G concentration (211 g L-1, 624 mM) reported to date after optimization of the reaction conditions.
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Affiliation(s)
- Xiumei Tao
- State Key Laboratory of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
- School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
- International Joint Laboratory on Food Safety , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
| | - Tian Wang
- State Key Laboratory of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
- School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
- International Joint Laboratory on Food Safety , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
| | - Lingqia Su
- State Key Laboratory of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
- School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
- International Joint Laboratory on Food Safety , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
| | - Jing Wu
- State Key Laboratory of Food Science and Technology , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
- School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
- International Joint Laboratory on Food Safety , Jiangnan University , 1800 Lihu Avenue , Wuxi 214122 , China
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26
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Yu S, Wang Y, Tian Y, Xu W, Bai Y, Zhang T, Mu W. Highly efficient biosynthesis of α-arbutin from hydroquinone by an amylosucrase from Cellulomonas carboniz. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.02.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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28
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Yang Q, Guo S, Liu X, Zhang Z, Bao Z, Xing H, Ren Q. Highly efficient separation of strongly hydrophilic structurally related compounds by hydrophobic ionic solutions. AIChE J 2017. [DOI: 10.1002/aic.16013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qiwei Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
| | - Shaocong Guo
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
| | - Xianxian Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
| | - Zhiguo Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
| | - Zongbi Bao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
| | - Huabin Xing
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
| | - Qilong Ren
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 China
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29
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Yang J, Pérez B, Anankanbil S, Li J, Zhou Y, Gao R, Guo Z. Valorizing Dairy Waste: Thermophilic Biosynthesis of a Novel Ascorbic Acid Derivative. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:9087-9093. [PMID: 28949527 DOI: 10.1021/acs.jafc.7b03173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
l-Ascorbic acid (l-AA) is an essential nutrient that is extremely unstable and cannot be synthesized by the human body. Therefore, attempts have been performed to develop biologically active l-AA derivatives with improved stability. This work presents a facile, scalable, and efficient enzymatic transgalactosylation of lactose to l-AA using β-glucosidase (TN0602) from Thermotoga naphthophila RKU-10. β-Glucosidase TN0602 displays high transgalactosylation activity at pH 5.0, 75 °C, and l-AA/lactose ratio of 2:1 to form a novel l-AA derivative [2-O-β-d-galactopyranosyl-l-ascorbic acid (l-AA-Gal)] with a maximal productivity of 138.88 mmol L-1 in 12 h, which is higher than most reports of enzymatic synthesis of l-AA-α-glucoside. Synthetic l-AA-Gal retains most l-AA antioxidant capability and presents dramatically higher stability than l-AA in an oxidative environment (Cu2+). In conclusion, this work reports a new way to valorize dairy waste lactose into a novel molecule l-AA-Gal, which could be a promising l-AA derivative to be used in a wide range of applications.
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Affiliation(s)
- Jingwen Yang
- Key Laboratory for Molecular Enzymology and Engineering, Ministry of Education, School of Life Science, Jilin University , Changchun, Jilin 130012, People's Republic of China
- Department of Engineering, Aarhus University , Gustav Wieds Vej 10, 8000 Aarhus, Denmark
- School of Biological and Medical Engineering, Hefei University of Technology , Hefei, Anhui 230009, People's Republic of China
| | - Bianca Pérez
- Department of Engineering, Aarhus University , Gustav Wieds Vej 10, 8000 Aarhus, Denmark
| | - Sampson Anankanbil
- Department of Engineering, Aarhus University , Gustav Wieds Vej 10, 8000 Aarhus, Denmark
| | - Jingbo Li
- Department of Engineering, Aarhus University , Gustav Wieds Vej 10, 8000 Aarhus, Denmark
| | - Ye Zhou
- Key Laboratory for Molecular Enzymology and Engineering, Ministry of Education, School of Life Science, Jilin University , Changchun, Jilin 130012, People's Republic of China
- Department of Engineering, Aarhus University , Gustav Wieds Vej 10, 8000 Aarhus, Denmark
| | - Renjun Gao
- Key Laboratory for Molecular Enzymology and Engineering, Ministry of Education, School of Life Science, Jilin University , Changchun, Jilin 130012, People's Republic of China
| | - Zheng Guo
- Department of Engineering, Aarhus University , Gustav Wieds Vej 10, 8000 Aarhus, Denmark
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30
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Li Z, Han H, Wang B, Gao J, Zhu B, Peng R, Yao Q. Transglucosylation of ascorbic acid to ascorbic acid 2-glucoside by a truncated version of α-glucosidase from Aspergillus niger. J Food Biochem 2017. [DOI: 10.1111/jfbc.12432] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhenjun Li
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Hongjuan Han
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Bo Wang
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Jianjie Gao
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Bo Zhu
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Rihe Peng
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
| | - Quanhong Yao
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Agro-Biotechnology Research Institute; Shanghai Academy of Agricultural Sciences, 2901 Beidi Rd; Shanghai 201106 People's Republic of China
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31
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Wojciechowska A, Klewicki R, Sójka M, Grzelak-Błaszczyk K. Application of Transgalactosylation Activity of β-Galactosidase from Kluyveromyces lactis for the Synthesis of Ascorbic Acid Galactoside. Appl Biochem Biotechnol 2017; 184:386-400. [PMID: 28707051 PMCID: PMC5756576 DOI: 10.1007/s12010-017-2551-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 06/25/2017] [Indexed: 11/29/2022]
Abstract
In view of a commonly known beneficial role and low stability of ascorbic acid, many efforts are constantly undertaken to produce its improved derivatives. This paper presents results on the synthesis of ascorbic acid galactoside using transgalactosylation properties of β-galactosidase from Kluyveromyces lactis and lactose as a donor of galactosyl moiety. The purpose of this study was to determine the influence of selected factors (concentration and molar ratio of substrates, amount of the enzyme preparation, pH of the solution, presence of different ions) on the course of transgalactosylation reaction. Research has shown that approx. 2.5% dry matter (d.m.; 12.7 g/L) of ascorbic acid galactoside is formed under favourable conditions (50% (w/v) substrates, sodium ascorbate and lactose at the molar ratio of 1.9:1, enzyme dose of 28,600 U/100 g lactose, pH = 7.0). The addition of Mg2+ or K+ ions to the reaction medium caused an increase in the final product content (even up to approx. 3.4% d.m., 17.2 g/L), while Na+ or Mn2+ had an adverse impact on the yield. The gathered data may be valuable for cosmetic or food industry.
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Affiliation(s)
- Aleksandra Wojciechowska
- Institute of Food Technology and Analysis, Lodz University of Technology, Stefanowskiego 4/10, 90-924, Łódź, Poland.
| | - Robert Klewicki
- Institute of Food Technology and Analysis, Lodz University of Technology, Stefanowskiego 4/10, 90-924, Łódź, Poland
| | - Michał Sójka
- Institute of Food Technology and Analysis, Lodz University of Technology, Stefanowskiego 4/10, 90-924, Łódź, Poland
| | - Katarzyna Grzelak-Błaszczyk
- Institute of Food Technology and Analysis, Lodz University of Technology, Stefanowskiego 4/10, 90-924, Łódź, Poland
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32
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Gudiminchi RK, Nidetzky B. Walking a Fine Line with Sucrose Phosphorylase: Efficient Single-Step Biocatalytic Production of l-Ascorbic Acid 2-Glucoside from Sucrose. Chembiochem 2017; 18:1387-1390. [PMID: 28426168 DOI: 10.1002/cbic.201700215] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Indexed: 01/04/2023]
Abstract
The 2-O-α-d-glucoside of l-ascorbic acid (AA-2G) is a highly stabilized form of vitamin C, with important industrial applications in cosmetics, food, and pharmaceuticals. AA-2G is currently produced through biocatalytic glucosylation of l-ascorbic acid from starch-derived oligosaccharides. Sucrose would be an ideal substrate for AA-2G synthesis, but it lacks a suitable transglycosidase. We show here that in a narrow pH window (pH 4.8-6.0, with sharp optimum at pH 5.2), sucrose phosphorylases catalyzed the 2-O-α-glucosylation of l-ascorbic acid from sucrose with high efficiency and perfect site-selectivity. Optimized synthesis with the enzyme from Bifidobacterium longum at 40 °C gave a concentrated product (155 g L-1 ; 460 mm), from which pure AA-2G was readily recovered in ∼50 % overall yield, thus providing the basis for advanced production. The peculiar pH dependence is suggested to arise from a "reverse-protonation" mechanism in which the catalytic base Glu232 on the glucosyl-enzyme intermediate must be protonated for attack on the anomeric carbon from the 2-hydroxyl of the ionized l-ascorbate substrate.
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Affiliation(s)
| | - Bernd Nidetzky
- Austrian Centre of Industrial Biotechnology, 14 Petersgasse, 8010, Graz, Austria.,Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, 12/1 Petersgasse, 8010, Graz, Austria
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33
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Chen S, Xiong Y, Su L, Wang L, Wu J. Position 228 in Paenibacillus macerans cyclodextrin glycosyltransferase is critical for 2-O-d-glucopyranosyl-l-ascorbic acid synthesis. J Biotechnol 2017; 247:18-24. [PMID: 28219734 DOI: 10.1016/j.jbiotec.2017.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 01/22/2017] [Accepted: 02/13/2017] [Indexed: 10/20/2022]
Abstract
The markedly stable l-ascorbic acid (L-AA) derivative 2-O-d-glucopyranosyl-l-ascorbic acid (AA-2G) has been widely used in the fields of food, medicine, cosmetics, and husbandry. Cyclodextrin glycosyltransferase (CGTase) is considered suitable for the large-scale production of AA-2G. In this work, Paenibacillus macerans CGTase was used to produce AA-2G and the production was 13.5g/l. An amino-acid sequence alignment of α-, β-, and α⁄β-CGTase indicated that the Phe at position 228 of P. macerans CGTase was different from the amino acids at this position in other CGTases (Met, Val, or Ile). In addition, the CGTases from Anaerobranca gottschalkii and Bacillus circulans 251, which have Val and Met at position 228, were shown to produce 28.9 and 35.7g/l AA-2G, respectively, which verified the importance of this position for AA-2G synthesis. Subsequently, P. macerans CGTase mutants F228M and F228V were constructed and shown to produce 24.8g/l and 24.0g/l AA-2G, respectively, which are 84% and 78% higher than that of wild-type P. macerans CGTase, respectively. Kinetic analysis of AA-2G synthesis showed that affinities of the two mutants for L-AA and the catalytic efficiencies increased. Meanwhile, the mutants had lower cyclization activity but higher disproportionation activities, which is beneficial for AA-2G synthesis. All these results indicated that amino acid at position 228 of P. macerans CGTase is crucial to AA-2G synthesis.
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Affiliation(s)
- Sheng Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China
| | - Yanjun Xiong
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China
| | - Lingqia Su
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China
| | - Lei Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China
| | - Jing Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.
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Gudiminchi RK, Towns A, Varalwar S, Nidetzky B. Enhanced Synthesis of 2-O-α-d-Glucopyranosyl-l-ascorbic Acid from α-Cyclodextrin by a Highly Disproportionating CGTase. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02108] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | - Andrew Towns
- Vivimed Laboratories Europe Ltd., P.O. Box B3, Leeds Road, Huddersfield, West Yorkshire HD1 6BU, United Kingdom
| | - Subhash Varalwar
- Vivimed Laboratories Ltd., Veeranag
Towers, Habsiguda, Hyderabad 500007, Telangana, India
| | - Bernd Nidetzky
- Austrian Center of Industrial Biotechnology, Petersgasse 14, A-8010 Graz, Austria
- Institute
of Biotechnology and Biochemical Engineering, Graz University of Technology, 12/1 Petersgasse, A-8010 Graz, Austria
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35
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Mochizuki M, Nomura S, Inami K. Antioxidant Activity of Ascorbic Acid Analogs Containing a Nitrogen Atom in the Ring. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Mochizuki M, Nomura S, Inami K. Radical Scavenging Activity of Ascorbic Acid Analogs Containing a Carbonyl Conjugated Ene-Diol Structure. HETEROCYCLES 2016. [DOI: 10.3987/com-15-13366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Rather MY, Ara KZG, Nordberg Karlsson E, Adlercreutz P. Characterization of cyclodextrin glycosyltransferases (CGTases) and their application for synthesis of alkyl glycosides with oligomeric head group. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.02.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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38
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Han R, Li J, Shin HD, Chen RR, Liu L, Du G, Chen J. Fusion of self-assembling amphipathic oligopeptides with cyclodextrin glycosyltransferase improves 2-O-D-glucopyranosyl-L-ascorbic acid synthesis with soluble starch as the glycosyl donor. Appl Environ Microbiol 2014; 80:4717-24. [PMID: 24858090 PMCID: PMC4148807 DOI: 10.1128/aem.01249-14] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 05/13/2014] [Indexed: 11/20/2022] Open
Abstract
In this study, we fused six self-assembling amphipathic peptides (SAPs) with cyclodextrin glycosyltransferase (CGTase) from Paenibacillus macerans to catalyze 2-O-D-glucopyranosyl-L-ascorbic acid (AA-2G) production with cheap substrates, including maltose, maltodextrin, and soluble starch as glycosyl donors. The results showed that two fusion enzymes, SAP5-CGTase and SAP6-CGTase, increased AA-2G yields to 2.33- and 3.36-fold that of wild-type CGTase when soluble starch was used as a substrate. The cyclization activities of these enzymes decreased, while disproportionation activities increased. Enzymatic characterization of the two fusion enzymes was performed, and kinetics analysis of AA-2G synthesis confirmed the enhanced soluble starch specificity of SAP5-CGTase and SAP6-CGTase compared to that in the wild-type CGTase. As revealed by structure modeling of the fusion and wild-type CGTases, enhanced substrate-binding capacity may result from the increased number of hydrogen bonds present after fusion. This study demonstrates an effective protein fusion approach to improving the substrate specificity of CGTase for AA-2G synthesis. Fusion enzymes, especially SAP6-CGTase, are promising starting points for further development through protein engineering.
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Affiliation(s)
- Ruizhi Han
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Synergetic Innovation of Center of Food Safety and Nutrition, Jiangnan University, Wuxi, China
| | - Jianghua Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Synergetic Innovation of Center of Food Safety and Nutrition, Jiangnan University, Wuxi, China
| | - Hyun-dong Shin
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Rachel R. Chen
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Synergetic Innovation of Center of Food Safety and Nutrition, Jiangnan University, Wuxi, China
| | - Guocheng Du
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- National Engineering of Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China
| | - Jian Chen
- Synergetic Innovation of Center of Food Safety and Nutrition, Jiangnan University, Wuxi, China
- National Engineering of Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China
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Han R, Li J, Shin HD, Chen RR, Du G, Liu L, Chen J. Recent advances in discovery, heterologous expression, and molecular engineering of cyclodextrin glycosyltransferase for versatile applications. Biotechnol Adv 2013; 32:415-28. [PMID: 24361954 DOI: 10.1016/j.biotechadv.2013.12.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 12/04/2013] [Accepted: 12/16/2013] [Indexed: 12/30/2022]
Abstract
Cyclodextrin glycosyltransferase (CGTase) is an important enzyme with multiple functions, in particular the production of cyclodextrins. It is also widely applied in baking and carbohydrate glycosylation because it participates in various types of catalytic reactions. New applications are being found with novel CGTases being isolated from various organisms. Heterologous expression is performed for the overproduction of CGTases to meet the requirements of these applications. In addition, various directed evolution techniques have been applied to modify the molecular structure of CGTase for improved performance in industrial applications. In recent years, substantial progress has been made in the heterologous expression and molecular engineering of CGTases. In this review, we systematically summarize the heterologous expression strategies used for enhancing the production of CGTases. We also outline and discuss the molecular engineering approaches used to improve the production, secretion, and properties (e.g., product and substrate specificity, catalytic efficiency, and thermal stability) of CGTase.
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Affiliation(s)
- Ruizhi Han
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Wuxi 214122, China
| | - Jianghua Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Wuxi 214122, China
| | - Hyun-Dong Shin
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta 30332, USA
| | - Rachel R Chen
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta 30332, USA
| | - Guocheng Du
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Wuxi 214122, China.
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Wuxi 214122, China.
| | - Jian Chen
- National Engineering of Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
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Awadallah-F A. Synergistic effect of poly(acrylamide)-incorporated poly(L-ascorbic acid) hydrogels in controlled release and wound dressings. Des Monomers Polym 2013. [DOI: 10.1080/15685551.2013.867578] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
- Ahmed Awadallah-F
- National Center for Radiation Research and Technology, B.O. Box 29 Nasr City, Cairo, Egypt
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Iterative saturation mutagenesis of -6 subsite residues in cyclodextrin glycosyltransferase from Paenibacillus macerans to improve maltodextrin specificity for 2-O-D-glucopyranosyl-L-ascorbic acid synthesis. Appl Environ Microbiol 2013; 79:7562-8. [PMID: 24077706 DOI: 10.1128/aem.02918-13] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
2-O-d-Glucopyranosyl-l-ascorbic acid (AA-2G), a stable l-ascorbic acid derivative, is usually synthesized by cyclodextrin glycosyltransferase (CGTase), which contains nine substrate-binding subsites (from +2 to -7). In this study, iterative saturation mutagenesis (ISM) was performed on the -6 subsite residues (Y167, G179, G180, and N193) in the CGTase from Paenibacillus macerans to improve its specificity for maltodextrin, which is a cheap and easily soluble glycosyl donor for AA-2G synthesis. Site saturation mutagenesis of four sites-Y167, G179, G180, and N193-was first performed and revealed that four mutants-Y167S, G179R, N193R, and G180R-produced AA-2G yields higher than those of other mutant and wild-type CGTases. ISM was then conducted with the best positive mutant as a template. Under optimal conditions, mutant Y167S/G179K/N193R/G180R produced the highest AA-2G titer of 2.12 g/liter, which was 84% higher than that (1.15 g/liter) produced by the wild-type CGTase. Kinetics analysis of AA-2G synthesis using mutant CGTases confirmed the enhanced maltodextrin specificity and showed that compared to the wild-type CGTase, the mutants had no cyclization activity but high hydrolysis and disproportionation activities. A possible mechanism for the enhanced substrate specificity was also analyzed through structure modeling of the mutant and wild-type CGTases. These results indicated that the -6 subsite played crucial roles in the substrate binding and catalytic reactions of CGTase and that the obtained CGTase mutants, especially Y167S/G179K/N193R/G180R, are promising starting points for further development through protein engineering.
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Highly efficient and regioselective production of an erythorbic acid glucoside using cyclodextrin glucanotransferase from Thermoanaerobacter sp. and amyloglucosidase. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.03.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Liu L, Xu Q, Han R, Shin HD, Chen RR, Li J, Du G, Chen J. Improving maltodextrin specificity for enzymatic synthesis of 2-O-d-glucopyranosyl-l-ascorbic acid by site-saturation engineering of subsite-3 in cyclodextrin glycosyltransferase from Paenibacillus macerans. J Biotechnol 2013; 166:198-205. [DOI: 10.1016/j.jbiotec.2013.05.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 04/22/2013] [Accepted: 05/08/2013] [Indexed: 11/29/2022]
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Han R, Li J, Shin HD, Chen RR, Du G, Liu L, Chen J. Carbohydrate-binding module-cyclodextrin glycosyltransferase fusion enables efficient synthesis of 2-O-d-glucopyranosyl-l-ascorbic acid with soluble starch as the glycosyl donor. Appl Environ Microbiol 2013; 79:3234-40. [PMID: 23503312 PMCID: PMC3685265 DOI: 10.1128/aem.00363-13] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 03/07/2013] [Indexed: 11/20/2022] Open
Abstract
In this study, we achieved the efficient synthesis of 2-O-d-glucopyranosyl-l-ascorbic acid (AA-2G) from soluble starch by fusing a carbohydrate-binding module (CBM) from Alkalimonas amylolytica α-amylase (CBMAmy) to cyclodextrin glycosyltransferase (CGTase) from Paenibacillus macerans. One fusion enzyme, CGT-CBMAmy, was constructed by fusing the CBMAmy to the C-terminal region of CGTase, and the other fusion enzyme, CGTΔE-CBMAmy, was obtained by replacing the E domain of CGTase with CBMAmy. The two fusion enzymes were then used to synthesize AA-2G from soluble starch as a cheap and easily soluble glycosyl donor. Under the optimal conditions, the AA-2G yields produced using CGTΔE-CBMAmy and CGT-CBMAmy were 2.01 g/liter and 3.03 g/liter, respectively, which were 3.94- and 5.94-fold of the yield from the wild-type CGTase (0.51 g/liter). The reaction kinetics of the two fusion enzymes were analyzed and modeled to confirm the enhanced specificity toward soluble starch. It was also found that, compared to the wild-type CGTase, the two fusion enzymes had relatively high hydrolysis and disproportionation activities, factors that favor AA-2G synthesis. Finally, it was speculated that the enhancement of soluble starch specificity may be related to the changes of substrate binding ability and the substrate binding sites between the CBM and the starch granule.
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Affiliation(s)
- Ruizhi Han
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
| | - Jianghua Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
| | - Hyun-Dong Shin
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Rachel R. Chen
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Guocheng Du
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Jian Chen
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China
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Liu L, Han R, Shin HD, Li J, Du G, Chen J. Biosynthesis of 2-O-D-glucopyranosyl-l-ascorbic acid from maltose by an engineered cyclodextrin glycosyltransferase from Paenibacillus macerans. Carbohydr Res 2013; 382:101-7. [PMID: 24239542 DOI: 10.1016/j.carres.2013.04.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 04/16/2013] [Accepted: 04/24/2013] [Indexed: 10/26/2022]
Abstract
In this work, the specificity of cyclodextrin glycosyltransferase (CGTase) of Paenibacillus macerans towards maltose was improved by the site-saturation engineering of lysine 47, and the enzymatic synthesis of 2-O-d-glucopyranosyl-l-ascorbic acid (AA-2G) with l-ascorbic acid and maltose as substrates was optimized. Compared to the AA-2G yield of the wild-type CGTase, that of the mutants K47F (lysine→phenylalanine), K47P (lysine→proline), and K47Y (lysine→tyrosine) was increased by 17.1%, 32.9%, and 21.1%, respectively. Under the optimal transformation conditions (pH 6.5, temperature 36°C, the mass ratio of l-ascorbic acid to maltose 1:1), the highest AA-2G titer by the K47P reached 1.12g/L, which was 1.32-fold of that (0.85g/L) obtained by the wild-type CGTase. The reaction kinetics analysis confirmed the enhanced maltose specificity of the mutants K47F, K47P, and K47Y. It was also found that compared to the wild-type CGTase, the three mutants had relatively lower cyclization activities and higher disproportionation activities, which was favorable for AA-2G synthesis. As revealed by the interaction structure model of CGTase with substrate, the enhancement of maltose specificity may be due to the removal of hydrogen bonding interactions between the side chain of residue 47 and the sugar at -3 subsite. The obtained mutant CGTases, especially the K47P, has a great potential in the large-scale production of AA-2G with maltose as a cheap and soluble substrate.
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Affiliation(s)
- Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
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Wagener FADTG, Carels CE, Lundvig DMS. Targeting the redox balance in inflammatory skin conditions. Int J Mol Sci 2013; 14:9126-67. [PMID: 23624605 PMCID: PMC3676777 DOI: 10.3390/ijms14059126] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 04/10/2013] [Accepted: 04/16/2013] [Indexed: 12/17/2022] Open
Abstract
Reactive oxygen species (ROS) can be both beneficial and deleterious. Under normal physiological conditions, ROS production is tightly regulated, and ROS participate in both pathogen defense and cellular signaling. However, insufficient ROS detoxification or ROS overproduction generates oxidative stress, resulting in cellular damage. Oxidative stress has been linked to various inflammatory diseases. Inflammation is an essential response in the protection against injurious insults and thus important at the onset of wound healing. However, hampered resolution of inflammation can result in a chronic, exaggerated response with additional tissue damage. In the pathogenesis of several inflammatory skin conditions, e.g., sunburn and psoriasis, inflammatory-mediated tissue damage is central. The prolonged release of excess ROS in the skin can aggravate inflammatory injury and promote chronic inflammation. The cellular redox balance is therefore tightly regulated by several (enzymatic) antioxidants and pro-oxidants; however, in case of chronic inflammation, the antioxidant system may be depleted, and prolonged oxidative stress occurs. Due to the central role of ROS in inflammatory pathologies, restoring the redox balance forms an innovative therapeutic target in the development of new strategies for treating inflammatory skin conditions. Nevertheless, the clinical use of antioxidant-related therapies is still in its infancy.
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Affiliation(s)
- Frank A. D. T. G. Wagener
- Authors to whom correspondence should be addressed; E-Mails: (F.A.D.T.G.W.); (D.M.S.L.); Tel.: +31-24-3614082 (F.A.D.T.G.W.); Fax: +31-24-3540631 (F.A.D.T.G.W. & D.M.S.L.)
| | | | - Ditte M. S. Lundvig
- Authors to whom correspondence should be addressed; E-Mails: (F.A.D.T.G.W.); (D.M.S.L.); Tel.: +31-24-3614082 (F.A.D.T.G.W.); Fax: +31-24-3540631 (F.A.D.T.G.W. & D.M.S.L.)
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47
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Han R, Liu L, Shin HD, Chen RR, Li J, Du G, Chen J. Systems engineering of tyrosine 195, tyrosine 260, and glutamine 265 in cyclodextrin glycosyltransferase from Paenibacillus macerans to enhance maltodextrin specificity for 2-O-(D)-glucopyranosyl-(L)-ascorbic acid synthesis. Appl Environ Microbiol 2013; 79:672-7. [PMID: 23160123 PMCID: PMC3553774 DOI: 10.1128/aem.02883-12] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Accepted: 11/07/2012] [Indexed: 11/20/2022] Open
Abstract
In this work, the site saturation mutagenesis of tyrosine 195, tyrosine 260 and glutamine 265 in the cyclodextrin glycosyltransferase (CGTase) from Paenibacillus macerans was conducted to improve the specificity of CGTase for maltodextrin, which can be used as a cheap and easily soluble glycosyl donor for the synthesis of 2-O-d-glucopyranosyl-l-ascorbic acid (AA-2G). Specifically, the site-saturation mutagenesis of three sites-tyrosine 195, tyrosine 260, and glutamine 265-was performed, and it was found that the resulting mutants (containing the mutations Y195S [tyrosine → serine], Y260R [tyrosine → arginine], and Q265K [glutamine → lysine]) produced higher AA-2G yields than the wild type and the other mutant CGTases when maltodextrin was used as the glycosyl donor. Furthermore, double and triple mutations were introduced, and four mutants (containing Y195S/Y260R, Y195S/Q265K, Y260R/Q265K, and Y260R/Q265K/Y195S) were obtained and evaluated for the capacity to produce AA-2G. The Y260R/Q265K/Y195S triple mutant produced the highest titer of AA-2G at 1.92 g/liter, which was 60% higher than that (1.20 g/liter) produced by the wild-type CGTase. The kinetics analysis of AA-2G synthesis by the mutant CGTases confirmed the enhanced maltodextrin specificity, and it was also found that compared with the wild-type CGTase, all seven mutants had lower cyclization activities and higher hydrolysis and disproportionation activities. Finally, the mechanism responsible for the enhanced substrate specificity was explored by structure modeling, which indicated that the enhancement of maltodextrin specificity may be related to the changes of hydrogen bonding interactions between the side chain of residue at the three positions (195, 260, and 265) and the substrate sugars. This work adds to our understanding of the synthesis of AA-2G and makes the Y260R/Q265K/Y195S mutant a good starting point for further development by protein engineering.
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Affiliation(s)
- Ruizhi Han
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
| | - Hyun-dong Shin
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Rachel R. Chen
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Jianghua Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
| | - Guocheng Du
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China
| | - Jian Chen
- National Engineering of Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China
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Enhanced production of α-cyclodextrin glycosyltransferase in Escherichia coli by systematic codon usage optimization. ACTA ACUST UNITED AC 2012; 39:1841-9. [DOI: 10.1007/s10295-012-1185-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 07/31/2012] [Indexed: 10/28/2022]
Abstract
Abstract
Enhancing the production of α-cyclodextrin glycosyltransferase (α-CGTase) is a key aim in α-CGTase industries. Here, the mature α-cgt gene from Paenibacillus macerans JFB05-01 was redesigned with systematic codon optimization to preferentially match codon frequencies of Escherichia coli without altering the amino acid sequence. Following synthesis, codon-optimized α-cgt (coα-cgt) and wild-type α-cgt (wtα-cgt) genes were cloned into pET-20b(+) and expressed in E. coli BL21(DE3). The total protein yield of the synthetic gene was greater than wtα-cgt expression (1,710 mg L−1) by 2,520 mg L−1, with the extracellular enzyme activity being improved to 55.3 U mL−1 in flask fermentation. ΔG values at -3 to +50 of the pelB site of both genes were −19.10 kcal mol−1. Functionally, coα-CGTase was equally as effective as wtα-CGTase in forming α-cyclodextrin (α-CD). These findings suggest that preferred codon usage is advantageous for translational efficiency to increase protein expression. Finally, batch fermentation was applied, and the extracellular coα-CGTase enzyme activity was 326 % that of wtα-CGTase. The results suggest that codon optimization is a reasonable strategy to improve the yield of α-CGTase for industrial application.
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Site-saturation engineering of lysine 47 in cyclodextrin glycosyltransferase from Paenibacillus macerans to enhance substrate specificity towards maltodextrin for enzymatic synthesis of 2-O-D-glucopyranosyl-L-ascorbic acid (AA-2G). Appl Microbiol Biotechnol 2012; 97:5851-60. [PMID: 23129181 DOI: 10.1007/s00253-012-4514-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 10/11/2012] [Accepted: 10/13/2012] [Indexed: 10/27/2022]
Abstract
In this work, the site-saturation engineering of lysine 47 in cyclodextrin glycosyltransferase (CGTase) from Paenibacillus macerans was conducted to improve the specificity of CGTase towards maltodextrin, which can be used as a cheap and easily soluble glycosyl donor for the enzymatic synthesis of 2-O-D-glucopyranosyl-L-ascorbic acid (AA-2G) by CGTase. When using maltodextrin as glycosyl donor, four mutants K47F (lysine→ phenylalanine), K47L (lysine→ leucine), K47V (lysine→ valine) and K47W (lysine→ tryptophan) showed higher AA-2G yield as compared with that produced by the wild-type CGTase. The transformation conditions (temperature, pH and the mass ratio of L-ascorbic acid to maltodextrin) were optimized and the highest titer of AA-2G produced by the mutant K47L could reach 1.97 g/l, which was 64.2% higher than that (1.20 g/l) produced by the wild-type CGTase. The reaction kinetics analysis confirmed the enhanced maltodextrin specificity, and it was also found that compared with the wild-type CGTase, the four mutants had relatively lower cyclization activities and higher disproportionation activities, which was favorable for AA-2G synthesis. The mechanism responsible for the enhanced substrate specificity was further explored by structure modeling and it was indicated that the enhancement of maltodextrin specificity may be due to the short residue chain and the removal of hydrogen bonding interactions between the side chain of residue 47 and the sugar at -3 subsite. Here the obtained mutant CGTases, especially the K47L, has a great potential in the production of AA-2G with maltodextrin as a cheap and easily soluble substrate.
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Zhou J, Liu H, Du G, Li J, Chen J. Production of α-cyclodextrin glycosyltransferase in Bacillus megaterium MS941 by systematic codon usage optimization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:10285-10292. [PMID: 23013320 DOI: 10.1021/jf302819h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
α-Cyclodextrin glycosyltransferase is a key enzyme in the cyclodextrin industry. The Gram-positive bacterium Bacillus megaterium was chosen for production of recombinant α-CGTase for safety concerns. Successful production of heterologous α-CGTase was achieved by adapting the original α-cgt gene to the codon usage of B. megaterium by systematic codon optimization. This balanced the tRNA pool and reduced ribosomal traffic jams. Protein expression and secretion was ensured by using the strong inducible promoter P(xyl) and the signal peptide SP(LipA). The impact of culture medium composition and induction strategies on α-CGTase production was systematically analyzed. Production and secretion at 32 °C for 24 h using modified culture medium was optimal for α-CGTase yield. Batch- and simple fed-batch fermentation was applied to achieve a high yield of 48.9 U·mL(-1), which was the highest activity reported for a Bacillus species, making this production system a reasonable alternative to Escherichia coli.
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Affiliation(s)
- Jingwen Zhou
- School of Biotechnology and Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, China.
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