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Zhang P, Mao XA, Gong JS, Kong XL, Su C, Zhang XM, Rao ZM, Xu ZH, Shi JS. High-level extracellular expression of phospholipase D by combinatorial fine-tuning strategy in Bacillus subtilis for efficient biosynthesis of phosphatidic acid. BIORESOURCE TECHNOLOGY 2024; 414:131492. [PMID: 39343177 DOI: 10.1016/j.biortech.2024.131492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 09/07/2024] [Accepted: 09/12/2024] [Indexed: 10/01/2024]
Abstract
Although Bacillus subtilis shows promise as a potential microbial cell factory for phospholipase D (PLD) expression, its production capacity remains insufficient. In this study, a secretory expression system, by co-optimization the promoter and signal peptides and employing a fed-batch fermentation strategy, was constructed to enhance expression of PLD from separate sources. The highest PLD production of 4056.9 U/mL was observed using this system, with a PLD production efficiency of 52.0 U/mL/h. Finally, a phosphatidic acid (PA) biosynthesis system was established using the constructed PLD as a catalyst, which achieved a PA yield of 219.1 g/L. This is the highest PLD production and PA yield reported globally to date. The protocol has significant potential for application for industrial PLD production as well as enzymatic phospholipids modification and also provides a valuable reference for overexpressing proteins in B. subtilis.
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Affiliation(s)
- Peng Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China; School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China.
| | - Xin-An Mao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China; Institute of Future Food Technology, JITRI, Yixing 214200, PR China.
| | - Xiao-Li Kong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.
| | - Chang Su
- Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China; Institute of Future Food Technology, JITRI, Yixing 214200, PR China.
| | - Xiao-Mei Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China; Institute of Future Food Technology, JITRI, Yixing 214200, PR China.
| | - Zhi-Ming Rao
- Institute of Future Food Technology, JITRI, Yixing 214200, PR China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.
| | - Zheng-Hong Xu
- Institute of Future Food Technology, JITRI, Yixing 214200, PR China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China.
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China; Institute of Future Food Technology, JITRI, Yixing 214200, PR China.
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2
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Saeed M, Yan M, Ni Z, Hussain N, Chen H. Molecular strategies to enhance the keratinase gene expression and its potential implications in poultry feed industry. Poult Sci 2024; 103:103606. [PMID: 38479096 PMCID: PMC10951097 DOI: 10.1016/j.psj.2024.103606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 02/18/2024] [Accepted: 02/27/2024] [Indexed: 03/24/2024] Open
Abstract
The tons of keratin waste are produced by the poultry and meat industry which is an insoluble and protein-rich material found in hair, feathers, wool, and some epidermal wastes. These waste products could be degraded and recycled to recover protein, which can save our environment. One of the potential strategy to achieve this target is use of microbial biotreatment which is more convenient, cost-effective, and environment-friendly by formulating hydrolysate complexes that could be administered as protein supplements, bioactive peptides, or animal feed ingredients. Keratin degradation shows great promise for long-term protein and amino acid recycling. According to the MEROPS database, known keratinolytic enzymes currently belong to at least 14 different protease families, including S1, S8, S9, S10, S16, M3, M4, M14, M16, M28, M32, M36, M38, and M55. In addition to exogenous attack (proteases from families S9, S10, M14, M28, M38, and M55), the various keratinolytic enzymes also function via endo-attack (proteases from families S1, S8, S16, M4, M16, and M36). Biotechnological methods have shown great promise for enhancing keratinase expression in different strains of microbes and different protein engineering techniques in genetically modified microbes such as bacteria and some fungi to enhance keratinase production and activity. Some microbes produce specific keratinolytic enzymes that can effectively degrade keratin substrates. Keratinases have been successfully used in the leather, textile, and pharmaceutical industries. However, the production and efficiency of existing enzymes need to be optimized before they can be used more widely in other processes, such as the cost-effective pretreatment of chicken waste. These can be improved more effectively by using various biotechnological applications which could serve as the best and novel approach for recycling and degrading biomass. This paper provides practical insights about molecular strategies to enhance keratinase expression to effectively utilize various poultry wastes like feathers and feed ingredients like soybean pulp. Furthermore, it describes the future implications of engineered keratinases for environment friendly utilization of wastes and crop byproducts for their better use in the poultry feed industry.
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Affiliation(s)
- Muhammad Saeed
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Mingchen Yan
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Zhong Ni
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Nazar Hussain
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Huayou Chen
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China.
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3
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Zhang P, Gong JS, Xie ZH, Su C, Zhang XM, Rao ZM, Xu ZH, Shi JS. Efficient secretory expression of phospholipase D for the high-yield production of phosphatidylserine and phospholipid derivates from soybean lecithin. Synth Syst Biotechnol 2023; 8:273-280. [PMID: 37033293 PMCID: PMC10073938 DOI: 10.1016/j.synbio.2023.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Phospholipase D (PLD) is an essential biocatalyst for the biological production of phosphatidylserine and phospholipid modification. However, the efficient heterologous expression of PLD is limited by its cell toxicity. In this study, a PLD was secretory expressed efficiently in Bacillus subtilis with an activity around 100 U/mL. A secretory expression system containing the signal peptide SPEstA and the dual-promoter PHpaII-SrfA was established, and the extracellular PLD activity further reached 119.22 U/mL through scale-up fermentation, 191.30-fold higher than that of the control. Under optimum reaction conditions, a 61.61% conversion ratio and 21.07 g/L of phosphatidylserine production were achieved. Finally, the synthesis system of PL derivates was established, which could efficiently synthesis novel PL derivates. The results highlight that the secretory expression system constructed in this study provides a promising PLD producing strain in industrial application, and laid the foundation for the biosynthesis of phosphatidylserine and other PL derivates. As far as we know, this work reports the highest level of extracellular PLD expression to date and the enzymatic production of several PL derivates for the first time.
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Affiliation(s)
- Peng Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China
- Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
- Corresponding author. Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China.
| | - Zhi-Hao Xie
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, PR China
| | - Chang Su
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China
- Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
| | - Xiao-Mei Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China
- Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
| | - Zhi-Ming Rao
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China
| | - Zheng-Hong Xu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, PR China
- Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, PR China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, 214122, PR China
- Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, PR China
- Corresponding author. Lihu Avenue No. 1800, Jiangnan University, Wuxi, 214122, PR China.
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Zhang YS, Jiang JY, Gong JS, Su C, Li H, Kang CL, Liu L, Xu ZH, Shi JS. High-level expression and characterization of a highly active hyaluronate lyase HylC with significant potential in hyaluronan oligosaccharide preparation. J Biotechnol 2023; 366:35-45. [PMID: 36925048 DOI: 10.1016/j.jbiotec.2023.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 02/16/2023] [Accepted: 03/10/2023] [Indexed: 03/16/2023]
Abstract
Hyaluronate lyases (HA lyases) have been proved to distribute widely among microorganisms, with large potential in hyaluronan processing. Here, a highly active HA lyase HylC from Citrobacter freundii strain Cf1 is reported. HylC was expressed in Escherichia coli BL21(DE3) under the regulation of T7 promoter, and purified to electrophoretic homogeneity for enzymatic characterization, which suggested its suitable thermo- and pH stability under 45 °C and pH rang of 4-8, and high halotolerancy in 1.5 M NaCl. The enzyme exhibited the optimal activity under 37 °C and pH 5.5, and was activated by Ca2+, K+, Zn2+, Ni2+ and Li+. Analysis of degradation product proved it cleave HA in endolytic manner, releasing unsaturated disaccharides as final product. Then, through optimization of promoter and construction of dual promoter, expression level of HylC improved from 1.10 × 104 U/mL to 2.64 × 104 U/mL on shake-flask level. Finally, through batch fermentation, a highest activity of 2.65×105 U/mL was achieved in a 5-L fermenter. Taken together, this work demonstrates the potential of HylC and its recombinant strain in industrial applications. To our knowledge, the HA lyase production reported in this study was the highest level in literatures to date.
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Affiliation(s)
- Yue-Sheng Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Jia-Yu Jiang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China.
| | - Chang Su
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Heng Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Chuan-Li Kang
- Shandong Engineering Laboratory of Sodium Hyaluronate and its Derivatives, Shandong Focusfreda Biotech Co., Ltd, Qufu 273165, PR China
| | - Lei Liu
- Shandong Engineering Laboratory of Sodium Hyaluronate and its Derivatives, Shandong Focusfreda Biotech Co., Ltd, Qufu 273165, PR China
| | - Zheng-Hong Xu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China.
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Wang J, Zhu H, Shang H, Guo B, Zhang M, Wang F, Zhang L, Xu J, Wang H. Development of a thiostrepton-free system for stable production of PLD in Streptomyces lividans SBT5. Microb Cell Fact 2022; 21:263. [PMID: 36529749 PMCID: PMC9761944 DOI: 10.1186/s12934-022-01992-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Phospholipase D (PLD) is highly valuable in the food and medicine industries, where it is used to convert low-cost phosphatidylcholine into high-value phospholipids (PLs). Despite being overexpressed in Streptomyces, PLD production requires expensive thiostrepton feeding during fermentation, limiting its industrialization. To address this issue, we propose a new thiostrepton-free system. RESULTS We developed a system using a combinatorial strategy containing the constitutive promoter kasOp* and PLD G215S mutation fused to a signal peptide sigcin of Streptoverticillium cinnamoneum pld. To find a candidate vector, we first expressed PLD using the integrative vector pSET152 and then built three autonomously replicating vectors by substituting Streptomyces replicons to increase PLD expression. According to our findings, replicon 3 with stability gene (sta) inserted had an ideal result. The retention rate of the plasmid pOJ260-rep3-pld* was 99% after five passages under non-resistance conditions. In addition, the strain SK-3 harboring plasmid pOJ260-rep3-pld* produced 62 U/mL (3.48 mg/g) of PLD, which further improved to 86.8 U/mL (7.51 mg/g) at 32 °C in the optimized medium, which is the highest activity achieved in the PLD secretory expression to date. CONCLUSIONS This is the first time that a thiostrepton-free PLD production system has been reported in Streptomyces. The new system produced stable PLD secretion and lays the groundwork for the production of PLs from fermentation stock. Meanwhile, in the Streptomyces expression system, we present a highly promising solution for producing other complex proteins.
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Affiliation(s)
- Juntan Wang
- grid.418515.cInstitute of Business Scientific, Henan Academy of Sciences, 87 Wenhua Road, Zhengzhou, 450002 Henan China
| | - Haihua Zhu
- grid.418515.cInstitute of Business Scientific, Henan Academy of Sciences, 87 Wenhua Road, Zhengzhou, 450002 Henan China
| | - Huiyi Shang
- grid.418515.cInstitute of Business Scientific, Henan Academy of Sciences, 87 Wenhua Road, Zhengzhou, 450002 Henan China
| | - Bishan Guo
- grid.418515.cInstitute of Business Scientific, Henan Academy of Sciences, 87 Wenhua Road, Zhengzhou, 450002 Henan China
| | - Mengxue Zhang
- grid.418515.cInstitute of Business Scientific, Henan Academy of Sciences, 87 Wenhua Road, Zhengzhou, 450002 Henan China
| | - Fayun Wang
- grid.418515.cInstitute of Business Scientific, Henan Academy of Sciences, 87 Wenhua Road, Zhengzhou, 450002 Henan China
| | - Lipan Zhang
- grid.418515.cInstitute of Business Scientific, Henan Academy of Sciences, 87 Wenhua Road, Zhengzhou, 450002 Henan China
| | - Jun Xu
- grid.108266.b0000 0004 1803 0494College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002 Henan China
| | - Hui Wang
- grid.16821.3c0000 0004 0368 8293School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 China
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Wang F, Mao X, Deng F, Cui R, Li L, Liu S, Yang B, Lan D, Wang Y. A New Phospholipase D from Moritella sp. JT01: Biochemical Characterization, Crystallization and Application in the Synthesis of Phosphatidic Acid. Int J Mol Sci 2022; 23:ijms231911633. [PMID: 36232934 PMCID: PMC9570413 DOI: 10.3390/ijms231911633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/11/2022] [Accepted: 09/15/2022] [Indexed: 11/07/2022] Open
Abstract
A new phospholipase D from marine Moritella sp. JT01 (MsPLD) was recombinantly expressed and biochemically characterized. The optimal reaction temperature and pH of MsPLD were determined to be 35 °C and 8.0. MsPLD was stable at a temperature lower than 35 °C, and the t1/2 at 4 °C was 41 days. The crystal structure of apo-MsPLD was resolved and the functions of a unique extra loop segment on the enzyme activity were characterized. The results indicated that a direct deletion or fastening of the extra loop segment by introducing disulfide bonds both resulted in a complete loss of its activity. The results of the maximum insertion pressure indicated that the deletion of the extra loop segment significantly decreased MsPLD’s interfacial binding properties to phospholipid monolayers. Finally, MsPLD was applied to the synthesis of phosphatidic acid by using a biphasic reaction system. Under optimal reaction conditions, the conversion rate of phosphatidic acid reached 86%. The present research provides a foundation for revealing the structural–functional relationship of this enzyme.
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Affiliation(s)
- Fanghua Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xuejing Mao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Fuli Deng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ruiguo Cui
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lilang Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Siyu Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Bo Yang
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Dongming Lan
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Correspondence: (D.L.); (Y.W.); Tel.: +86-20-8711-3848 (D.L.); +86-20-8711-3842 (Y.W.)
| | - Yonghua Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Correspondence: (D.L.); (Y.W.); Tel.: +86-20-8711-3848 (D.L.); +86-20-8711-3842 (Y.W.)
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7
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Qi N, Liu J, Song W, Liu J, Gao C, Chen X, Guo L, Liu L, Wu J. Rational Design of Phospholipase D to Improve the Transphosphatidylation Activity for Phosphatidylserine Synthesis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:6709-6718. [PMID: 35616637 DOI: 10.1021/acs.jafc.2c02212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Phosphatidylserine (PS) has been widely used in the fields of food and medicine, among others, owing to its unique chemical structure and health benefits. However, the phospholipase D (PLD)-mediated enzymatic production of PS remains a challenge due to the low transphosphatidylation activity of PLD. Therefore, in the present study, we designed a maltose-binding protein (MBP) tag and a PLD co-expression method to achieve the expression of soluble PLD in Escherichia coli. A "reconstruct substrate pocket" strategy was then proposed based on the catalytic mechanism and molecular dynamics simulation, expanding the substrate pocket and manipulating the coordination of l-Ser within the active site. The best mutant (SrMBPPLDMu6) exhibited a 2.04-fold higher transphosphatidylation/hydrolysis ratio than the wild-type Furthermore, under optimal conditions, Mu6 produced 58.6 g/L PS with 77.2% conversion, within 12 h on a 3 L scale, which demonstrates the potential of the proposed method for industrial application.
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Affiliation(s)
- Na Qi
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jianmin Liu
- Shandong Huishilai Biotechnology Co., Ltd., Jinan, Shandong 250098, China
| | - Wei Song
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jia Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Cong Gao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xiulai Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Liang Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Liming Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jing Wu
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China
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8
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Xiang ZX, Gong JS, Li H, Shi WT, Jiang M, Xu ZH, Shi JS. Heterologous expression, fermentation strategies and molecular modification of collagen for versatile applications. Crit Rev Food Sci Nutr 2021:1-22. [PMID: 34907819 DOI: 10.1080/10408398.2021.2016599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Collagen is a kind of high macromolecular protein with unique tissue distribution and distinctive functions in the body. At present, most collagen products are extracted from the tissues and organs of mammals or marine fish. However, this method exhibits several disadvantages, including low efficiency and serious waste generation, which makes it difficult to meet the current market demand. With the rapid development of synthetic biology and the deepening of high-density fermentation technology, the collagen preparation by biosynthesis strategy emerges as the times require. Co-expression with the proline hydroxylase gene can solve the problem of non-hydroxylated collagen, but the yield may be affected. Therefore, improving the expression through molecular modification and dynamic regulation of synthesis is an entry point for future research. Due to the defects in certain properties of the natural collagen, modification of properties would be benefit for meeting the requirements of practical application. In this paper, in-depth investigations on recombinant expression, fermentation, and modification studies of collagen are conducted. Also, it summarizes the research progress of collagen in food, medicine, and beauty industry in recent years. Furthermore, the future development trend and application prospect of collagen are discussed, which would provide guidance for its preparation and application.
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Affiliation(s)
- Zhi-Xiang Xiang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, PR China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, PR China
| | - Heng Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, PR China
| | - Wei-Ting Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, PR China
| | - Min Jiang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, PR China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi, PR China.,Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, PR China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, PR China
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9
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Zhang P, Gong JS, Qin J, Li H, Hou HJ, Zhang XM, Xu ZH, Shi JS. Phospholipids (PLs) know-how: exploring and exploiting phospholipase D for its industrial dissemination. Crit Rev Biotechnol 2021; 41:1257-1278. [PMID: 33985392 DOI: 10.1080/07388551.2021.1921690] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 12/26/2020] [Accepted: 02/24/2021] [Indexed: 10/21/2022]
Abstract
Owing to their numerous nutritional and bioactive functions, phospholipids (PLs), which are major components of biological membranes in all living organisms, have been widely applied as nutraceuticals, food supplements, and cosmetic ingredients. To date, PLs are extracted solely from soybean or egg yolk, despite the diverse market demands and high cost, owing to a tedious and inefficient manufacturing process. A microbial-based manufacturing process, specifically phospholipase D (PLD)-based biocatalysis and biotransformation process for PLs, has the potential to address several challenges associated with the soybean- or egg yolk-based supply chain. However, poor enzyme properties and inefficient microbial expression systems for PLD limit their wide industrial dissemination. Therefore, sourcing new enzyme variants with improved properties and developing advanced PLD expression systems are important. In the present review, we systematically summarize recent achievements and trends in the discovery, their structural properties, catalytic mechanisms, expression strategies for enhancing PLD production, and its multiple applications in the context of PLs. This review is expected to assist researchers to understand current advances in this field and provide insights for further molecular engineering efforts toward PLD-mediated bioprocessing.
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Affiliation(s)
- Peng Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Jiufu Qin
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Hui Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Hai-Juan Hou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Xiao-Mei Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi, P. R. China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, P. R. China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, P. R. China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, P. R. China
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10
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Wang ZK, Gong JS, Qin J, Li H, Lu ZM, Shi JS, Xu ZH. Improving the Intensity of Integrated Expression for Microbial Production. ACS Synth Biol 2021; 10:2796-2807. [PMID: 34738786 DOI: 10.1021/acssynbio.1c00334] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Chromosomal integration of exogenous genes is preferred for industrially related fermentation, as plasmid-mediated fermentation leads to extra metabolic burden and genetic instability. Moreover, with the development and advancement of genome engineering and gene editing technologies, inserting genes into chromosomes has become more convenient; integration expression is extensively utilized in microorganisms for industrial bioproduction and expected to become the trend of recombinant protein expression. However, in actual research and application, it is important to enhance the expression of heterologous genes at the host genome level. Herein, we summarized the basic principles and characteristics of genomic integration; furthermore, we highlighted strategies to improve the expression of chromosomal integration of genes and pathways in host strains from three aspects, including chassis cell optimization, regulation of expression elements in gene expression cassettes, optimization of gene dose level and integration sites on chromosomes. Moreover, we reviewed and summarized the relevant studies on the application of integrated expression in the exploration of gene function and the various types of industrial microorganism production. Consequently, this review would serve as a reference for the better application of integrated expression.
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Affiliation(s)
- Zi-Kai Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Jiufu Qin
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Hui Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, PR China
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11
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Li M, Zhou Y, Duan X, Zhou L, Zhang T. Characterization of a phospholipase D from Streptomyces cinnamoneum SK43.003 suitable for phosphatidylserine synthesis. Biotechnol Appl Biochem 2021; 69:1917-1928. [PMID: 34585426 DOI: 10.1002/bab.2257] [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: 06/23/2021] [Accepted: 09/19/2021] [Indexed: 11/11/2022]
Abstract
A phospholipase D high producing strain with transphosphatidylation activity that is suitable for phosphatidylserine synthesis was screened by our laboratory and named as Streptomyces cinnamoneum SK43.003. The enzyme structural and biochemical properties were investigated using the molecular biology method. A 1521-bp fragment of the phospholipase D gene from Streptomyces cinnamoneum SK43.003 was amplified by PCR and encoded for 506 amino acids. The primary structure contained two conserved HKD and GG/S motifs. The pld gene was cloned and expressed in Escherichia coli. The purified enzyme exhibited the highest activity at a pH value of 6.0 andtemperature of 60°C. The enzyme was stable within a pH range of 4-7 for 24 h or at temperatures below 50°C. In addition, Triton X-100, Fe2+ , and Al3+ were beneficial to the enzyme activity, whereas Zn2+ and Cu2+ dramatically inhibited its activity. In a two-phase system, the enzyme could convert phosphatidylcholine to phosphatidylserine with a 92% transformation rate.
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Affiliation(s)
- Mengli Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Yanfeng Zhou
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xiaoli Duan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Licheng Zhou
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Tao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
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12
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Zhang H, Li X, Liu Q, Sun J, Secundo F, Mao X. Construction of a Super-Folder Fluorescent Protein-Guided Secretory Expression System for the Production of Phospholipase D in Bacillus subtilis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:6842-6849. [PMID: 34124889 DOI: 10.1021/acs.jafc.1c02089] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Phospholipids (PLs) are one of the main ingredients in food and nutraceutical, cosmetics, agriculture, and pharmaceutical products. Phospholipase D (PLD) is a crucial enzyme for the biocatalytic synthesis or modification of PLs. Here, to prepare PLD more efficiently, we constructed a PLD expression and secretion system in Bacillus subtilis and developed an environmentally friendly reaction system. A nonclassical secretory pathway where a super-folder green fluorescent protein plays as an N-terminal guide protein was introduced. This expression system can not only achieve rapid screening of high-level expression strains but can also achieve the secretion of the target proteins. Under optimal fermentation conditions, the enzyme activity of the culture medium was 0.35 U/mL, which was 2.05-fold that of the Sec secretion pathway strains. Meanwhile, the effects of several organic solvents in the biphasic reaction media were compared. The results showed that when using cyclopentyl methyl ether as the organic phase, the final conversion rate reached 96.9%. It has shown good application potential in the synthesis of phosphatidylserine, laid the foundation for the synthesis and application of other rare and high-value PLs, and provided a reference for the production of other biocatalysts.
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Affiliation(s)
- Haiyang Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xuehan Li
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Qi Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Jianan Sun
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Francesco Secundo
- Istituto di Chimica del Riconoscimento Molecolare, CNR, v. Mario Bianco 9, Milan 20131, Italy
| | - Xiangzhao Mao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
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13
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Wang F, Liu S, Mao X, Cui R, Yang B, Wang Y. Crystal Structure of a Phospholipase D from the Plant-Associated Bacteria Serratia plymuthica Strain AS9 Reveals a Unique Arrangement of Catalytic Pocket. Int J Mol Sci 2021; 22:3219. [PMID: 33809980 PMCID: PMC8004604 DOI: 10.3390/ijms22063219] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/16/2021] [Accepted: 03/16/2021] [Indexed: 11/16/2022] Open
Abstract
Phospholipases D (PLDs) play important roles in different organisms and in vitro phospholipid modifications, which attract strong interests for investigation. However, the lack of PLD structural information has seriously hampered both the understanding of their structure-function relationships and the structure-based bioengineering of this enzyme. Herein, we presented the crystal structure of a PLD from the plant-associated bacteria Serratia plymuthica strain AS9 (SpPLD) at a resolution of 1.79 Å. Two classical HxKxxxxD (HKD) motifs were found in SpPLD and have shown high structural consistence with several PLDs in the same family. While comparing the structure of SpPLD with the previous resolved PLDs from the same family, several unique conformations on the C-terminus of the HKD motif were demonstrated to participate in the arrangement of the catalytic pocket of SpPLD. In SpPLD, an extented loop conformation between β9 and α9 (aa228-246) was found. Moreover, electrostatic surface potential showed that this loop region in SpPLD was positively charged while the corresponding loops in the two Streptomyces originated PLDs (PDB ID: 1F0I, 2ZE4/2ZE9) were neutral. The shortened loop between α10 and α11 (aa272-275) made the SpPLD unable to form the gate-like structure which existed specically in the two Streptomyces originated PLDs (PDB ID: 1F0I, 2ZE4/2ZE9) and functioned to stabilize the substrates. In contrast, the shortened loop conformation at this corresponding segment was more alike to several nucleases (Nuc, Zuc, mZuc, NucT) within the same family. Moreover, the loop composition between β11 and β12 was also different from the two Streptomyces originated PLDs (PDB ID: 1F0I, 2ZE4/2ZE9), which formed the entrance of the catalytic pocket and were closely related to substrate recognition. So far, SpPLD was the only structurally characterized PLD enzyme from Serratia. The structural information derived here not only helps for the understanding of the biological function of this enzyme in plant protection, but also helps for the understanding of the rational design of the mutant, with potential application in phospholipid modification.
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Affiliation(s)
- Fanghua Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (F.W.); (S.L.); (X.M.); (R.C.)
| | - Siyu Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (F.W.); (S.L.); (X.M.); (R.C.)
| | - Xuejing Mao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (F.W.); (S.L.); (X.M.); (R.C.)
| | - Ruiguo Cui
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (F.W.); (S.L.); (X.M.); (R.C.)
| | - Bo Yang
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China;
| | - Yonghua Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (F.W.); (S.L.); (X.M.); (R.C.)
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14
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High-level soluble expression of phospholipase D from Streptomyces chromofuscus in Escherichia coli by combinatorial optimization. ELECTRON J BIOTECHN 2021. [DOI: 10.1016/j.ejbt.2020.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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15
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Zhang Y, Zhu L, Wu G, Wang X, Jin Q, Qi X, Zhang H. Design of amino-functionalized hollow mesoporous silica cube for enzyme immobilization and its application in synthesis of phosphatidylserine. Colloids Surf B Biointerfaces 2021; 202:111668. [PMID: 33740632 DOI: 10.1016/j.colsurfb.2021.111668] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/23/2021] [Accepted: 02/28/2021] [Indexed: 12/18/2022]
Abstract
In this study, hollow mesoporous silica cube (HMSC) modified with amino (-NH2) were synthesized and applied in the immobilization of phospholipase D (PLD) via physical adsorption and chemical cross-linking strategy. The amino-functionalized nano carrier HMSC represented excellent immobilization ability and achieved 87.15 % immobilization rate. The immobilized PLD has wider pH application range and thermal stability, and maintained over 90% of the initial activity after incubation at 50 °C for 2 h. After 50 days of storage at 4 ℃, immobilized PLD retained 40.12 % of its initial activity while free PLD lost 88.28% of its initial activity. The modified HMSC with immobilized PLD (HMSC-NH2-PLD) retained 50.73% activities after 9 consecutive reuses. Using the HMSC-NH2-PLD, a high-efficient method for the conversion of phosphatidylserine (PS) from phosphatidylcholine (PC) and L-serine was proposed. The HMSC-NH2-PLD exhibited prominent enzymatic activity for PS synthesis, the maximal conversion of PS was 90.40% with a catalytic efficiency (CE) of 31.95 μmol / (g h under the optimal conditions. The research in this paper provides a sustainable and efficient biocatalysis application for PS synthesis.
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Affiliation(s)
- Yao Zhang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Ling Zhu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Gangcheng Wu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Xingguo Wang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Qingzhe Jin
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Xiguang Qi
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Hui Zhang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China.
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16
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Mao S, Zhang Z, Ma X, Tian H, Lu F, Liu Y. Efficient secretion expression of phospholipase D in Bacillus subtilis and its application in synthesis of phosphatidylserine by enzyme immobilization. Int J Biol Macromol 2020; 169:282-289. [PMID: 33333097 DOI: 10.1016/j.ijbiomac.2020.12.103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/05/2020] [Accepted: 12/13/2020] [Indexed: 11/29/2022]
Abstract
Transphosphatidylation catalyzed by phospholipase D has gained increasing attention for producing phosphatidylserine (PS), which can be used in functional food and medicine. In this study, we investigated the effects of six signal peptides on the secretion of PLD (PLDsa) from Streptomyces antibioticus TCCC 21059 in the food-grade GRAS bacterium Bacillus subtilis. It indicated that the optimal signal peptide DacB with an Ala-X-Ala sequence motif at the C-terminus showed the highest secretory expression ability, resulting in increased production of 2.84 U/mL PLDsa. Then PLDsa was immobilized on the epoxy-based carriers, and one of these carriers allowed PLDsa loading of up to 2.7 mg/g. The immobilized PLDsa was more stable over a wide range of pH value (4.5-7.5) and temperature (16 °C-60 °C) than free PLDsa. Subsequently, the synthesis of PS from soybean phosphatidylcholine (PC) was carried out in purely aqueous solution using immobilized PLDsa, leading to a high yield of 65%. The immobilized PLDsa catalyst maintained a relative PS production of 60% after 5 recycles. Notably, the use of toxic solvent was completely eliminated in the whole process, which would be more profitable for the application of PS.
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Affiliation(s)
- Shuhong Mao
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, State Key Laboratory of Food Nutrition and Safety, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Zhaohui Zhang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, State Key Laboratory of Food Nutrition and Safety, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Xiaoyu Ma
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, State Key Laboratory of Food Nutrition and Safety, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Huan Tian
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, State Key Laboratory of Food Nutrition and Safety, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Fuping Lu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, State Key Laboratory of Food Nutrition and Safety, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Yihan Liu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, State Key Laboratory of Food Nutrition and Safety, The College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
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