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Wang QY, Wang HY, Zhang WG, Xu JZ. Economical one-pot synthesis of isoquercetin and D-allulose from quercetin and sucrose using whole-cell biocatalyst. Enzyme Microb Technol 2024; 176:110412. [PMID: 38402828 DOI: 10.1016/j.enzmictec.2024.110412] [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: 12/13/2023] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 02/27/2024]
Abstract
Isoquercetin and D-allulose have diverse applications and significant value in antioxidant, antibacterial, antiviral, and lipid metabolism. Isoquercetin can be synthesized from quercetin, while D-allulose is converted from D-fructose. However, their production scale and overall quality are relatively low, leading to high production costs. In this study, we have devised a cost-effective one-pot method for biosynthesizing isoquercetin and D-allulose using a whole-cell biocatalyst derived from quercetin and sucrose. To achieve this, the optimized isoquercetin synthase and D-allulose-3-epimerase were initially identified through isofunctional gene screening. In order to reduce the cost of uridine diphosphate glucose (UDPG) during isoquercetin synthesis and ensure a continuous supply of UDPG, sucrose synthase is introduced to enable the self-circulation of UDPG. At the same time, the inclusion of sucrose permease was utilized to successfully facilitate the catalytic production of D-allulose in whole cells. Finally, the recombinant strain BL21/UGT-SUS+DAE-SUP, which overexpresses MiF3GTMUT, GmSUS, EcSUP, and DAEase, was obtained. This strain co-produced 41±2.4 mg/L of isoquercetin and 5.7±0.8 g/L of D-allulose using 120 mg/L of quercetin and 20 g/L of sucrose as substrates for 5 h after optimization. This is the first green synthesis method that can simultaneously produce flavonoid compounds and rare sugars. These findings provide valuable insights and potential for future industrial production, as well as practical applications in factories.
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Affiliation(s)
- Qi-Yang Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, JiangNan University, 1800# Lihu Road, Wuxi, Jiangsu Province 214122, China
| | - Hao-Yu Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, JiangNan University, 1800# Lihu Road, Wuxi, Jiangsu Province 214122, China
| | - Wei-Guo Zhang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, JiangNan University, 1800# Lihu Road, Wuxi, Jiangsu Province 214122, China
| | - Jian-Zhong Xu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, JiangNan University, 1800# Lihu Road, Wuxi, Jiangsu Province 214122, China.
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2
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He F, Gao B, Cheng X, Zhai J, Zhang X, Yang C, Jiewei T. High-level production of poly-γ-glutamic acid by a newly isolated Bacillus sp. YJY-8 and potential use in increasing the production of tomato. Prep Biochem Biotechnol 2024; 54:637-646. [PMID: 37768129 DOI: 10.1080/10826068.2023.2261058] [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] [Indexed: 09/29/2023]
Abstract
Strain YJY-8, a new γ-polyglutamic acid producer, was separated from fermented soybean paste samples. The strain was identified as a genus of Bacillus by morphological and 16S rDNA sequence analysis and was named Bacillus sp. YJY-8. The optimal medium composition and cultural conditions were studied using a single-factor experiment and a response surface experiment. The optimized medium consisted of monosodium glutamate 70 g/L, glucose 54.3 g/L, glycerol 31.8 g/L, ammonium sulfate 11.1 g/L, yeast extract 3.2 g/L, tryptone 1.5 g/L, L-glutamic acid 6.8 g/L, MgSO4 7H2O 0.5 g/L, FeCl3 6H2O 0.02 g/L, KH2PO4 0.9 g/L, CaCl2 0.03 g/L, MnSO4 H2O 0.3 g/L, ammonium molybdate 0.02 g/L, pH 7.0. The optimal cultivation conditions were 35 °C and pH 7.0. Under the optimized conditions, after 48 hr of cultivation, the highest shaking flask fermentation level of γ-PGA reached 65.2 ± 0.36 g/L. In addition, through fed-batch fermentation in 30 L fermenters, the fermentation level of γ-PGA reached its highest level at 88.42 g/L and productivity was 1.23 g/(L hr) after 72 hr. Then, the effect of γ-PGA on tomato yield was investigated. At the seedling stage, the plant height and stem diameter of γ-PGA treated plants increased by 5.69 and 15.735% after spraying γ-PGA for 19 days. During the flowering and fruiting period, the stem diameter of the γ-PGA treatment group increased by 6.74%, with a maximum increase of 11.65%. The number of fruit branches increased by 0.56-16.29% and the number of fruit sets increased by 1.01-28.47%. At the fruit maturation stage, the yield of tomatoes increased by 10.51, 14.27, and 5.83%.
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Affiliation(s)
- Fuming He
- Chambroad Chemical Industry Research Institute Co., Ltd, Binzhou, P.R. China
| | - Baojun Gao
- Chambroad Chemical Industry Research Institute Co., Ltd, Binzhou, P.R. China
| | - Xin Cheng
- Chambroad Chemical Industry Research Institute Co., Ltd, Binzhou, P.R. China
| | - Jiao Zhai
- Chambroad Chemical Industry Research Institute Co., Ltd, Binzhou, P.R. China
| | - Xinqing Zhang
- Chambroad Chemical Industry Research Institute Co., Ltd, Binzhou, P.R. China
| | - Chuanlun Yang
- Chambroad Chemical Industry Research Institute Co., Ltd, Binzhou, P.R. China
| | - Tian Jiewei
- Chambroad Chemical Industry Research Institute Co., Ltd, Binzhou, P.R. China
- Shan Dong Chambroad Holding Group Co., Ltd, Binzhou, P.R. China
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education and College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu, P.R. China
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3
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Franceus J, Rivas-Fernández JP, Lormans J, Rovira C, Desmet T. Evolution of Phosphorylase Activity in an Ancestral Glycosyltransferase. ACS Catal 2024; 14:3103-3114. [PMID: 38449530 PMCID: PMC10913872 DOI: 10.1021/acscatal.3c05819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/08/2024] [Accepted: 01/11/2024] [Indexed: 03/08/2024]
Abstract
The reconstruction of ancestral sequences can offer a glimpse into the fascinating process of molecular evolution by exposing the adaptive pathways that shape the proteins found in nature today. Here, we track the evolution of the carbohydrate-active enzymes responsible for the synthesis and turnover of mannogen, a critical carbohydrate reserve in Leishmania parasites. Biochemical characterization of resurrected enzymes demonstrated that mannoside phosphorylase activity emerged in an ancestral bacterial mannosyltransferase, and later disappeared in the process of horizontal gene transfer and gene duplication in Leishmania. By shuffling through plausible historical sequence space in an ancestral mannosyltransferase, we found that mannoside phosphorylase activity could be toggled on through various combinations of mutations at positions outside of the active site. Molecular dynamics simulations showed that such mutations can affect loop rigidity and shield the active site from water molecules that disrupt key interactions, allowing α-mannose 1-phosphate to adopt a catalytically productive conformation. These findings highlight the importance of subtle distal mutations in protein evolution and suggest that the vast collection of natural glycosyltransferases may be a promising source of engineering templates for the design of tailored phosphorylases.
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Affiliation(s)
- Jorick Franceus
- Centre
for Synthetic Biology (CSB), Department of Biotechnology, Ghent University, Coupure Links 653, Ghent 9000, Belgium
| | - José Pablo Rivas-Fernández
- Departament
de Química Inorgànica i Orgànica (Secció
de Química Orgànica) and Institut de Química
Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franquès 1, Barcelona 08028, Spain
| | - Jolien Lormans
- Centre
for Synthetic Biology (CSB), Department of Biotechnology, Ghent University, Coupure Links 653, Ghent 9000, Belgium
| | - Carme Rovira
- Departament
de Química Inorgànica i Orgànica (Secció
de Química Orgànica) and Institut de Química
Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franquès 1, Barcelona 08028, Spain
- Institució
Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain
| | - Tom Desmet
- Centre
for Synthetic Biology (CSB), Department of Biotechnology, Ghent University, Coupure Links 653, Ghent 9000, Belgium
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Cai M, Han Y, Zheng X, Xue B, Zhang X, Mahmut Z, Wang Y, Dong B, Zhang C, Gao D, Sun J. Synthesis of Poly-γ-Glutamic Acid and Its Application in Biomedical Materials. MATERIALS (BASEL, SWITZERLAND) 2023; 17:15. [PMID: 38203869 PMCID: PMC10779536 DOI: 10.3390/ma17010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/04/2023] [Accepted: 12/13/2023] [Indexed: 01/12/2024]
Abstract
Poly-γ-glutamic acid (γ-PGA) is a natural polymer composed of glutamic acid monomer and it has garnered substantial attention in both the fields of material science and biomedicine. Its remarkable cell compatibility, degradability, and other advantageous characteristics have made it a vital component in the medical field. In this comprehensive review, we delve into the production methods, primary application forms, and medical applications of γ-PGA, drawing from numerous prior studies. Among the four production methods for PGA, microbial fermentation currently stands as the most widely employed. This method has seen various optimization strategies, which we summarize here. From drug delivery systems to tissue engineering and wound healing, γ-PGA's versatility and unique properties have facilitated its successful integration into diverse medical applications, underlining its potential to enhance healthcare outcomes. The objective of this review is to establish a foundational knowledge base for further research in this field.
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Affiliation(s)
- Minjian Cai
- Department of Cell Biology and Medical Genetics, College of Basic Medical Science, Jilin University, Changchun 130021, China
| | - Yumin Han
- Department of Cell Biology and Medical Genetics, College of Basic Medical Science, Jilin University, Changchun 130021, China
| | - Xianhong Zheng
- Department of Cell Biology and Medical Genetics, College of Basic Medical Science, Jilin University, Changchun 130021, China
| | - Baigong Xue
- Department of Cell Biology and Medical Genetics, College of Basic Medical Science, Jilin University, Changchun 130021, China
| | - Xinyao Zhang
- Department of Cell Biology and Medical Genetics, College of Basic Medical Science, Jilin University, Changchun 130021, China
| | - Zulpya Mahmut
- Department of Cell Biology and Medical Genetics, College of Basic Medical Science, Jilin University, Changchun 130021, China
| | - Yuda Wang
- Department of Cell Biology and Medical Genetics, College of Basic Medical Science, Jilin University, Changchun 130021, China
| | - Biao Dong
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China;
| | - Chunmei Zhang
- Department of Cell Biology and Medical Genetics, College of Basic Medical Science, Jilin University, Changchun 130021, China
| | - Donghui Gao
- Department of Anesthesiology and Operating Room, School and Hospital of Stomatology, Jilin University, Changchun 130012, China
| | - Jiao Sun
- Department of Cell Biology and Medical Genetics, College of Basic Medical Science, Jilin University, Changchun 130021, China
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5
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Luo Z, Yan Y, Du S, Zhu Y, Pan F, Wang R, Xu Z, Xu X, Li S, Xu H. Recent advances and prospects of Bacillus amyloliquefaciens as microbial cell factories: from rational design to industrial applications. Crit Rev Biotechnol 2023; 43:1073-1091. [PMID: 35997331 DOI: 10.1080/07388551.2022.2095499] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 04/02/2022] [Indexed: 11/03/2022]
Abstract
Bacillus amyloliquefaciens is one of the most characterized Gram-positive bacteria. This species has unique characteristics that are beneficial for industrial applications, including its utilization of: cheap carbon as a substrate, a transparent genetic background, and large-scale robustness in fermentation. Indeed, the productivity characteristics of B. amyloliquefaciens have been thoroughly analyzed and further optimized through systems biology and synthetic biology techniques. Following the analysis of multiple engineering design strategies, B. amyloliquefaciens is now considered an efficient cell factory capable of producing large quantities of multiple products from various raw materials. In this review, we discuss the significant potential advantages offered by B. amyloliquefaciens as a platform for metabolic engineering and industrial applications. In addition, we systematically summarize the recent laboratory research and industrial application of B. amyloliquefaciens, including: relevant advances in systems and synthetic biology, various strategies adopted to improve the cellular performances of synthetic chemicals, as well as the latest progress in the synthesis of certain important products by B. amyloliquefaciens. Finally, we propose the current challenges and essential strategies to usher in an era of broader B. amyloliquefaciens use as microbial cell factories.
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Affiliation(s)
- Zhengshan Luo
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Yifan Yan
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Shanshan Du
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Yifan Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Fei Pan
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Rui Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Zheng Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Xiaoqi Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Sha Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Hong Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
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6
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Zhang Z, He P, Cai D, Chen S. Genetic and metabolic engineering for poly-γ-glutamic acid production: current progress, challenges, and prospects. World J Microbiol Biotechnol 2022; 38:208. [DOI: 10.1007/s11274-022-03390-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 08/13/2022] [Indexed: 11/29/2022]
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7
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Rykov SV, Battalova IY, Mironov AS. Construction of Recombinant Bacillus subtilis Strains Producing Hyaluronic Acid. RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422050088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Li D, Hou L, Gao Y, Tian Z, Fan B, Wang F, Li S. Recent Advances in Microbial Synthesis of Poly-γ-Glutamic Acid: A Review. Foods 2022; 11:foods11050739. [PMID: 35267372 PMCID: PMC8909396 DOI: 10.3390/foods11050739] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/12/2022] [Accepted: 02/26/2022] [Indexed: 02/01/2023] Open
Abstract
Poly-γ-glutamic acid (γ-PGA) is a natural, safe, non-immunogenic, biodegradable, and environmentally friendly glutamic biopolymer. γ-PGA has been regarded as a promising bio-based materials in the food field, medical field, even in environmental engineering field, and other industrial fields. Microbial synthesis is an economical and effective way to synthesize γ-PGA. Bacillus species are the most widely studied producing strains. γ-PGA biosynthesis involves metabolic pathway of racemization, polymerization, transfer, and catabolism. Although microbial synthesis of γ-PGA has already been used extensively, productivity and yield remain the major constraints for its industrial application. Metabolic regulation is an attempt to solve the above bottleneck problems and meet the demands of commercialization. Therefore, it is important to understand critical factors that influence γ-PGA microbial synthesis in depth. This review focuses on production strains, biosynthetic pathway, and metabolic regulation. Moreover, it systematically summarizes the functional properties, purification procedure, and industrial application of γ-PGA.
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Affiliation(s)
- Danfeng Li
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, No. 2 Yuan Ming Yuan West Road, Beijing 100193, China; (D.L.); (L.H.); (Y.G.); (Z.T.); (B.F.)
| | - Lizhen Hou
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, No. 2 Yuan Ming Yuan West Road, Beijing 100193, China; (D.L.); (L.H.); (Y.G.); (Z.T.); (B.F.)
| | - Yaxin Gao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, No. 2 Yuan Ming Yuan West Road, Beijing 100193, China; (D.L.); (L.H.); (Y.G.); (Z.T.); (B.F.)
| | - Zhiliang Tian
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, No. 2 Yuan Ming Yuan West Road, Beijing 100193, China; (D.L.); (L.H.); (Y.G.); (Z.T.); (B.F.)
| | - Bei Fan
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, No. 2 Yuan Ming Yuan West Road, Beijing 100193, China; (D.L.); (L.H.); (Y.G.); (Z.T.); (B.F.)
- Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Fengzhong Wang
- Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Correspondence: (F.W.); (S.L.); Tel.: +86-010-62815977 (F.W.); +86-010-62810295 (S.L.)
| | - Shuying Li
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, No. 2 Yuan Ming Yuan West Road, Beijing 100193, China; (D.L.); (L.H.); (Y.G.); (Z.T.); (B.F.)
- Correspondence: (F.W.); (S.L.); Tel.: +86-010-62815977 (F.W.); +86-010-62810295 (S.L.)
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Zhang Q, Chen Y, Gao L, Chen J, Ma X, Cai D, Wang D, Chen S. Enhanced production of poly-γ-glutamic acid via optimizing the expression cassette of Vitreoscilla hemoglobin in Bacillus licheniformis. Synth Syst Biotechnol 2022; 7:567-573. [PMID: 35155838 PMCID: PMC8801620 DOI: 10.1016/j.synbio.2022.01.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 01/16/2023] Open
Abstract
Poly-γ-glutamic acid (γ-PGA) is a natural polymer with various applications, and its high-viscosity hinders oxygen transmission and improvement of synthesis level. Vitreoscilla hemoglobin (VHB) has been introduced into various hosts as oxygen carrier, however, its expression strength and contact efficiency with oxygen hindered efficient oxygen transfer and metabolite synthesis. Here, we want to optimize the expression cassette of VHB for γ-PGA production. Firstly, our results implied that γ-PGA yields were enhanced when introducing twin-arginine translocation (Tat) signal peptides (SPYwbN, SPPhoD and SPTorA) into VHB expression cassette, and the best performance was attained by SPYwbN from Bacillus subtilis, the γ-PGA yield of which was 18.53% higher than that of control strain, and intracellular ATP content and oxygen transfer coefficient (KLa) were increased by 29.71% and 73.12%, respectively, indicating that VHB mediated by SPYwbN benefited oxygen transfer and ATP generation for γ-PGA synthesis. Furthermore, four promoters were screened, and Pvgb was proven as the more suitable promoter for VHB expression and γ-PGA synthesis, and γ-PGA yield of attaining strain WX/pPvgb-YwbN-Vgb was further increased to 40.59 g/L by 10.18%. Finally, WX/pPvgb-YwbN-Vgb was cultivated in 3 L fermentor for fed-batch fermentation, and 46.39 g/L γ-PGA was attained by glucose feeding, increased by 49.26% compared with the initial yield (31.01 g/L). Taken together, this study has attained an efficient VHB expression cassette for oxygen transfer and γ-PGA synthesis, which could also be applied in the production of other metabolites.
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Affiliation(s)
- Qing Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, 430062, PR China
| | - Yaozhong Chen
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, 430062, PR China
| | - Lin Gao
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, 430062, PR China
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Jian'gang Chen
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, 430062, PR China
- Wuhan Junan Biotechnology Co. Ltd., Wuhan, China
| | - Xin Ma
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, 430062, PR China
| | - Dongbo Cai
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, 430062, PR China
| | - Dong Wang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, 430062, PR China
- Corresponding author. 368 Youyi Avenue, Wuchang District, Wuhan, 430062, Hubei, PR China.
| | - Shouwen Chen
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, 430062, PR China
- Corresponding author. 368 Youyi Avenue, Wuchang District, Wuhan, 430062, Hubei, PR China.
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Lin L, Zhang Z, Tang H, Guo Y, Zhou B, Liu Y, Huang R, Du L, Pang H. Enhanced sucrose fermentation by introduction of heterologous sucrose transporter and invertase into Clostridium beijerinckii for acetone-butanol-ethanol production. ROYAL SOCIETY OPEN SCIENCE 2021; 8:201858. [PMID: 34567584 PMCID: PMC8456130 DOI: 10.1098/rsos.201858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 08/31/2021] [Indexed: 05/12/2023]
Abstract
A heterologous pathway for sucrose transport and metabolism was introduced into Clostridium beijerinckii to improve sucrose use for n-butanol production. The combined expression of StSUT1, encoding a sucrose transporter from potato (Solanum tuberosum), and SUC2, encoding a sucrose invertase from Saccharomyces cerevisiae, remarkably enhanced n-butanol production. With sucrose, sugarcane molasses and sugarcane juice as substrates, the C. beijerinckii strain harbouring StSUT1 and SUC2 increased acetone-butanol-ethanol production by 38.7%, 22.3% and 52.8%, respectively, compared with the wild-type strain. This is the first report to demonstrate enhanced sucrose fermentation due to the heterologous expression of a sucrose transporter and invertase in Clostridium. The metabolic engineering strategy used in this study can be widely applied in other microorganisms to enhance the production of high-value compounds from sucrose-based biomass.
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Affiliation(s)
- Lihua Lin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Research Center for Microbial and Enzymatic Technology, College of Life Science and Technology, Guangxi University, Daxue Road No. 100, Nanning, Guangxi 530005, People's Republic of China
- Guangxi Key Laboratory of Bio-refinery, National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Daling Road No. 98, Nanning, Guangxi 530007, People's Republic of China
| | - Zhikai Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Research Center for Microbial and Enzymatic Technology, College of Life Science and Technology, Guangxi University, Daxue Road No. 100, Nanning, Guangxi 530005, People's Republic of China
| | - Hongchi Tang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Research Center for Microbial and Enzymatic Technology, College of Life Science and Technology, Guangxi University, Daxue Road No. 100, Nanning, Guangxi 530005, People's Republic of China
- Guangxi Key Laboratory of Bio-refinery, National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Daling Road No. 98, Nanning, Guangxi 530007, People's Republic of China
| | - Yuan Guo
- Guangxi Key Laboratory of Bio-refinery, National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Daling Road No. 98, Nanning, Guangxi 530007, People's Republic of China
| | - Bingqing Zhou
- Guangxi Key Laboratory of Bio-refinery, National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Daling Road No. 98, Nanning, Guangxi 530007, People's Republic of China
| | - Yi Liu
- Guangxi Key Laboratory of Bio-refinery, National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Daling Road No. 98, Nanning, Guangxi 530007, People's Republic of China
| | - Ribo Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Research Center for Microbial and Enzymatic Technology, College of Life Science and Technology, Guangxi University, Daxue Road No. 100, Nanning, Guangxi 530005, People's Republic of China
| | - Liqin Du
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Research Center for Microbial and Enzymatic Technology, College of Life Science and Technology, Guangxi University, Daxue Road No. 100, Nanning, Guangxi 530005, People's Republic of China
| | - Hao Pang
- Guangxi Key Laboratory of Bio-refinery, National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Daling Road No. 98, Nanning, Guangxi 530007, People's Republic of China
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A native conjugative plasmid confers potential selective advantages to plant growth-promoting Bacillus velezensis strain GH1-13. Commun Biol 2021; 4:582. [PMID: 33990691 PMCID: PMC8121941 DOI: 10.1038/s42003-021-02107-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/13/2021] [Indexed: 02/04/2023] Open
Abstract
The conjugative plasmid (pBV71) possibly confers a selective advantage to Bacillus velezensis strain GH1-13, although a selective marker gene is yet to be identified. Here we show that few non-mucoid wild-type GH1-13 cells are spontaneously converted to mucoid variants with or without the loss of pBV71. Mucoid phenotypes, which contain or lack the plasmid, become sensitive to bacitracin, gramicidin, selenite, and tellurite. Using the differences in antibiotic resistance and phenotype, we isolated a reverse complement (COM) and a transconjugant of strain FZB42 with the native pBV71. Transformed COM and FZB42p cells were similar to the wild-type strain GH1-13 with high antibiotic resistance and slow growth rates on lactose compared to those of mucoid phenotypes. RT-PCR analysis revealed that the expression of plasmid-encoded orphan aspartate phosphatase (pRapD) was coordinated with a new quorum-sensing (QS) cassette of RapF2-PhrF2 present in the chromosome of strain GH1-13, but not in strain FZB42. Multi-omics analysis on wild-type and plasmid-cured cells of strain GH1-13 suggested that the conjugative plasmid expression has a crucial role in induction of early envelope stress response that promotes cell morphogenesis, biofilm formation, catabolite repression, and biosynthesis of extracellular-matrix components and antibiotics for protection of host cell during exponential phase.
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12
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Wang D, Kim H, Lee S, Kim DH, Joe MH. High-level production of poly-γ-glutamic acid from untreated molasses by Bacillus siamensis IR10. Microb Cell Fact 2020; 19:101. [PMID: 32398084 PMCID: PMC7216703 DOI: 10.1186/s12934-020-01361-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 04/30/2020] [Indexed: 01/01/2023] Open
Abstract
Background Poly-γ-glutamic acid (γ-PGA) is a promising biopolymer and has been applied in many fields. Bacillus siamensis SB1001 was a newly isolated poly-γ-glutamic acid producer with sucrose as its optimal carbon source. To improve the utilization of carbon source, and then molasses can be effectively used for γ-PGA production, 60cobalt gamma rays was used to mutate the genes of B. siamensis SB1001. Results Bacillus siamensis IR10 was screened for the production of γ-PGA from untreated molasses. In batch fermentation, 17.86 ± 0.97 g/L γ-PGA was obtained after 15 h, which is 52.51% higher than that of its parent strain. Fed-batch fermentation was performed to further improve the yield of γ-PGA with untreated molasses, yielding 41.40 ± 2.01 g/L of γ-PGA with a productivity of 1.73 ± 0.08 g/L/h. An average γ-PGA productivity of 1.85 g/L/h was achieved in the repeated fed-batch fermentation. This is the first report of such a high γ-PGA productivity. The analysis of the enzyme activities showed that they were affected by the carbon sources, enhanced ICDH and GDH, and decreased ODHC, which are important for γ-PGA production. Conclusion These results suggest that untreated molasses can be used for economical and industrial-scale production of γ-PGA by B. siamensis IR10.![]()
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Affiliation(s)
- Dexin Wang
- Radiation Utilization and Facilities Management Division, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup, 56212, Republic of Korea.,Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics,Center for Fungal Pathogenesis, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Hyangmi Kim
- Bacteria Research Team, Nakdonggang National Institute of Biological Resources (NNIBR), Sangju, 37242, Republic of Korea
| | - Sungbeom Lee
- Radiation Research Division, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup, 56212, Republic of Korea.,Department of Radiation Science and Technology, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Dae-Hyuk Kim
- Department of Bioactive Material Sciences, Institute for Molecular Biology and Genetics,Center for Fungal Pathogenesis, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Min-Ho Joe
- Radiation Utilization and Facilities Management Division, Korea Atomic Energy Research Institute, 29 Geumgu-gil, Jeongeup, 56212, Republic of Korea.
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13
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Wang D, Hwang JS, Kim DH, Lee S, Kim DH, Joe MH. A newly isolated Bacillus siamensis SB1001 for mass production of poly-γ-glutamic acid. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.11.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Zhang L, Chen L, Diao J, Song X, Shi M, Zhang W. Construction and analysis of an artificial consortium based on the fast-growing cyanobacterium Synechococcus elongatus UTEX 2973 to produce the platform chemical 3-hydroxypropionic acid from CO 2. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:82. [PMID: 32391082 PMCID: PMC7201998 DOI: 10.1186/s13068-020-01720-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 04/24/2020] [Indexed: 05/05/2023]
Abstract
BACKGROUND Cyanobacterial carbohydrates, such as sucrose, have been considered as potential renewable feedstock to support the production of fuels and chemicals. However, the separation and purification processes of these carbohydrates will increase the production cost of chemicals. Co-culture fermentation has been proposed as an efficient and economical way to utilize these cyanobacterial carbohydrates. However, studies on the application of co-culture systems to achieve green biosynthesis of platform chemicals are still rare. RESULTS In this study, we successfully achieved one-step conversion of sucrose derived from cyanobacteria to fine chemicals by constructing a microbial consortium consisting of the fast-growing cyanobacterium Synechococcus elongatus UTEX 2973 and Escherichia coli to sequentially produce sucrose and then the platform chemical 3-hydroxypropionic acid (3-HP) from CO2 under photoautotrophic growth conditions. First, efforts were made to overexpress the sucrose permease-coding gene cscB under the strong promoter P cpc560 in S. elongatus UTEX 2973 for efficient sucrose secretion. Second, the sucrose catabolic pathway and malonyl-CoA-dependent 3-HP biosynthetic pathway were introduced into E. coli BL21 (DE3) for heterologous biosynthesis of 3-HP from sucrose. By optimizing the cultivation temperature from 37 to 30 °C, a stable artificial consortium system was constructed with the capability of producing 3-HP at up to 68.29 mg/L directly from CO2. In addition, cell growth of S. elongatus UTEX 2973 in the consortium was enhanced, probably due to the quick quenching of reactive oxygen species (ROS) in the system by E. coli, which in turn improved the photosynthesis of cyanobacteria. CONCLUSION The study demonstrated the feasibility of the one-step conversion of sucrose to fine chemicals using an artificial consortium system. The study also confirmed that heterotrophic bacteria could promote the cell growth of cyanobacteria by relieving oxidative stress in this microbial consortium, which further suggests the potential value of this system for future industrial applications.
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Affiliation(s)
- Li Zhang
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072 People’s Republic of China
- Frontier Science Center of Synthetic Biology, Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin University, Tianjin, People’s Republic of China
- SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, People’s Republic of China
| | - Lei Chen
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072 People’s Republic of China
- Frontier Science Center of Synthetic Biology, Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin University, Tianjin, People’s Republic of China
- SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, People’s Republic of China
| | - Jinjin Diao
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072 People’s Republic of China
- Frontier Science Center of Synthetic Biology, Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin University, Tianjin, People’s Republic of China
- SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, People’s Republic of China
| | - Xinyu Song
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072 People’s Republic of China
- Frontier Science Center of Synthetic Biology, Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin University, Tianjin, People’s Republic of China
- SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, People’s Republic of China
- Center for Biosafety Research and Strategy, Tianjin University, Tianjin, People’s Republic of China
| | - Mengliang Shi
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072 People’s Republic of China
- Frontier Science Center of Synthetic Biology, Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin University, Tianjin, People’s Republic of China
- SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, People’s Republic of China
| | - Weiwen Zhang
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072 People’s Republic of China
- Frontier Science Center of Synthetic Biology, Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin University, Tianjin, People’s Republic of China
- SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, People’s Republic of China
- Center for Biosafety Research and Strategy, Tianjin University, Tianjin, People’s Republic of China
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15
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Xu G, Zha J, Cheng H, Ibrahim MHA, Yang F, Dalton H, Cao R, Zhu Y, Fang J, Chi K, Zheng P, Zhang X, Shi J, Xu Z, Gross RA, Koffas MAG. Engineering Corynebacterium glutamicum for the de novo biosynthesis of tailored poly-γ-glutamic acid. Metab Eng 2019; 56:39-49. [PMID: 31449877 DOI: 10.1016/j.ymben.2019.08.011] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 08/15/2019] [Accepted: 08/17/2019] [Indexed: 11/17/2022]
Abstract
γ-Polyglutamic acid (γ-PGA) is a biodegradable polymer naturally produced by Bacillus spp. that has wide applications. Fermentation of γ-PGA using Bacillus species often requires the supplementation of L-glutamic acid, which greatly increases the overall cost. Here, we report a metabolically engineered Corynebacterium glutamicum capable of producing γ-PGA from glucose. The genes encoding γ-PGA synthase complex from B. subtilis (pgsB, C, and A) or B. licheniformis (capB, C, and A) were expressed under inducible promoter Ptac in a L-glutamic acid producer C. glutamicum ATCC 13032, which led to low levels of γ-PGA production. Subsequently, C. glutamicum F343 with a strong L-glutamic acid production capability was tested. C. glutamicum F343 carrying capBCA produced γ-PGA up to 11.4 g/L, showing a higher titer compared with C. glutamicum F343 expressing pgsBCA. By introducing B. subtilis glutamate racemase gene racE under Ptac promoter mutants with different expression strength, the percentage of L-glutamic acid units in γ-PGA could be adjusted from 97.1% to 36.9%, and stayed constant during the fermentation process, while the γ-PGA titer reached 21.3 g/L under optimal initial glucose concentrations. The molecular weight (Mw) of γ-PGA in the engineered strains ranged from 2000 to 4000 kDa. This work provides a foundation for the development of sustainable and cost-effective de novo production of γ-PGA from glucose with customized ratios of L-glutamic acid in C. glutamicum.
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Affiliation(s)
- Guoqiang Xu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, United States; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, China
| | - Jian Zha
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, United States
| | - Hui Cheng
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, China
| | - Mohammad H A Ibrahim
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, United States; Chemistry of Natural and Microbial Products Department, National Research Centre, Al-Bohoos St., Cairo, 12622, Egypt
| | - Fan Yang
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, United States
| | - Hunter Dalton
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, United States
| | - Rong Cao
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, China
| | - Yaxin Zhu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, China
| | - Jiahua Fang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, China
| | - Kaijun Chi
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, China
| | - Pu Zheng
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Xiaomei Zhang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; Laboratory of Pharmaceutical Engineering, School of Pharmaceutics, Jiangnan University, Wuxi, 214122, China
| | - Jinsong Shi
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; Laboratory of Pharmaceutical Engineering, School of Pharmaceutics, Jiangnan University, Wuxi, 214122, China
| | - Zhenghong Xu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China; Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, China; Laboratory of Pharmaceutical Engineering, School of Pharmaceutics, Jiangnan University, Wuxi, 214122, China.
| | - Richard A Gross
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, United States; Chemistry of Natural and Microbial Products Department, National Research Centre, Al-Bohoos St., Cairo, 12622, Egypt; Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA.
| | - Mattheos A G Koffas
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China; Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, 12180, United States; Chemistry of Natural and Microbial Products Department, National Research Centre, Al-Bohoos St., Cairo, 12622, Egypt; Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA; Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, USA.
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16
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Sha Y, Sun T, Qiu Y, Zhu Y, Zhan Y, Zhang Y, Xu Z, Li S, Feng X, Xu H. Investigation of Glutamate Dependence Mechanism for Poly-γ-glutamic Acid Production in Bacillus subtilis on the Basis of Transcriptome Analysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6263-6274. [PMID: 31088055 DOI: 10.1021/acs.jafc.9b01755] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The development of commercial poly-γ-glutamic acid (γ-PGA) production by glutamate-dependent strains requires understanding the glutamate dependence mechanism in the strains. Here, we first systematically analyzed the response pattern of Bacillus subtilis to glutamate addition by comparative transcriptomics. Glutamate addition induced great changes in intracellular metabolite concentrations and significantly upregulated genes involved in the central metabolic pathways. Subsequent gene overexpression experiments revealed that only the enhancement of glutamate synthesis pathway successfully led to γ-PGA accumulation without glutamate addition, indicating the key role of intracellular glutamate for γ-PGA synthesis in glutamate-dependent strains. Finally, by a combination of metabolic engineering targets, the γ-PGA titer reached 10.21 ± 0.42 g/L without glutamate addition. Exogenous glutamate further enhanced the γ-PGA yield (35.52 ± 0.26 g/L) and productivity (0.74 g/(L h)) in shake-flask fermentation. This work provides insights into the glutamate dependence mechanism in B. subtilis and reveals potential molecular targets for increasing economical γ-PGA production.
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Affiliation(s)
- Yuanyuan Sha
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
| | - Tao Sun
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
| | - Yibin Qiu
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
| | - Yifan Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
| | - Yijing Zhan
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
- Nanjing Shineking Biotech Co., Ltd. , Nanjing 210061 , People's Republic of China
| | - Yatao Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
| | - Zongqi Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
| | - Sha Li
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
| | - Xiaohai Feng
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
| | - Hong Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , People's Republic of China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , People's Republic of China
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17
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Gonzalez-Gil L, Carballa M, Corvini PFX, Lema JM. Reversibility of enzymatic reactions might limit biotransformation of organic micropollutants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 665:574-578. [PMID: 30776629 DOI: 10.1016/j.scitotenv.2019.02.143] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/08/2019] [Accepted: 02/09/2019] [Indexed: 06/09/2023]
Abstract
Biotransformation of many organic micropollutants (OMPs) in sewage treatment plants is incomplete leading to their release into the environment. Recent findings suggest that thermodynamic aspects of the reaction as chemical equilibrium limit biotransformation, while kinetic parameters have a lower influence. Reversibility of enzymatic reactions might result in a chemical equilibrium between the OMP and the transformation product, thus impeding a total removal of the compound. To the best of our knowledge, no study has focused on proving the reversible action of enzymes towards OMPs so far. Therefore, we aimed at demonstrating this hypothesis through in vitro assays with bisphenol A (BPA) in the presence of kinase enzymes, namely acetate kinase and hexokinase, which are key enzymes in anaerobic processes. Results suggest that BPA is phosphorylated by acetate kinase and hexokinase in the presence of ATP (adenosine 5-triphosphate), but when the concentration of this co-substrate decreases and the enzymes loss their activity, the backward reaction occurs, revealing a reversible biotransformation mechanism. This information is particularly relevant to address new removal strategies, which up to now were mainly focused on modifying the kinetic parameters of the reaction.
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Affiliation(s)
- Lorena Gonzalez-Gil
- Department of Chemical Engineering, School of Engineering, Universidade de Santiago de Compostela, Rúa Lope Gómez de Marzoa, E-15782 Santiago de Compostela, Spain.
| | - Marta Carballa
- Department of Chemical Engineering, School of Engineering, Universidade de Santiago de Compostela, Rúa Lope Gómez de Marzoa, E-15782 Santiago de Compostela, Spain.
| | - Philippe F-X Corvini
- Institute for Ecopreneurship, School of Life Sciences, University of Applied Sciences and Arts Northwestern Switzerland, 4132 Muttenz, Switzerland.
| | - Juan M Lema
- Department of Chemical Engineering, School of Engineering, Universidade de Santiago de Compostela, Rúa Lope Gómez de Marzoa, E-15782 Santiago de Compostela, Spain.
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18
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Boonchoo K, Puseenam A, Kocharin K, Tanapongpipat S, Roongsawang N. Sucrose-inducible heterologous expression of phytase in high cell density cultivation of the thermotolerant methylotrophic yeast Ogataea thermomethanolica. FEMS Microbiol Lett 2019; 366:5380776. [PMID: 30869784 DOI: 10.1093/femsle/fnz052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/12/2019] [Indexed: 11/13/2022] Open
Abstract
In this study, production of fungal phytase in thermotolerant methylotrophic yeast Ogataea thermomethanolica TBRC656 employing methanol-inducible OtAOX promoter and sucrose-inducible OtMal promoter was investigated in a high cell density fed-batch fermentation. Although a similar maximum cell concentration was obtained in both expression systems, the OtMal system gave ~2-fold higher phytase activity, specific yield, production yield, volumetric productivity and specific productivity rate compared with the OtAOX system. In addition to being more efficient, the OtMal system is more flexible because sucrose or sugarcane molasses can be utilized as less expensive carbon sources instead of glycerol in batch and fed-batch stages. Phytase yields from the OtMal system produced using sucrose or sugarcane molasses are comparable with those obtained with glycerol. We estimate the cost of phytase production by the OtMal system using sucrose or sugarcane molasses to be ~85% lower than the OtAOX system.
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Affiliation(s)
- Kriengsak Boonchoo
- Microbial Cell Factory Research Team, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Aekkachai Puseenam
- Microbial Cell Factory Research Team, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Kanokarn Kocharin
- Microbial Cell Factory Research Team, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Sutipa Tanapongpipat
- Microbial Cell Factory Research Team, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Niran Roongsawang
- Microbial Cell Factory Research Team, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
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19
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Zhang J, Wang P, Wang X, Feng J, Sandhu HS, Wang Y. Enhancement of sucrose metabolism in Clostridium saccharoperbutylacetonicum N1-4 through metabolic engineering for improved acetone-butanol-ethanol (ABE) fermentation. BIORESOURCE TECHNOLOGY 2018; 270:430-438. [PMID: 30245312 DOI: 10.1016/j.biortech.2018.09.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 06/08/2023]
Abstract
This work investigated sucrose metabolism in C. saccharoperbutylacetonicum. Inactivation of sucrose catabolism operon resulted in 28.9% decrease in sucrose consumption and 44.1% decrease in ABE production with sucrose as sole carbon source. Interestingly, a large amount of colloid-like polysaccharides were generated in the mutant, which might be due to inefficient intracellular sucrose metabolism. Deletion of transcriptional repressor gene successfully alleviated CCR and enhanced ABE production by 24.7%. Additional overexpression of endogenous sucrose pathway further elevated sucrose consumption and enhanced ABE production by 17.2%, 45.7%, or 22.5% compared to wild type with sucrose, mixed sugars or sugarcane juice as substrate, respectively. The engineered strain could be a robust platform for efficient biofuel production from inexpensive sucrose-based carbon sources.
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Affiliation(s)
- Jie Zhang
- Department of Biosystems Engineering, Auburn University, Auburn, AL 36849, USA
| | - Pixiang Wang
- Department of Biosystems Engineering, Auburn University, Auburn, AL 36849, USA
| | - Xiaofei Wang
- Department of Biosystems Engineering, Auburn University, Auburn, AL 36849, USA
| | - Jun Feng
- Department of Biosystems Engineering, Auburn University, Auburn, AL 36849, USA
| | - Hardev S Sandhu
- Everglades Research and Education Center, Belle Glade, FL 33430, USA
| | - Yi Wang
- Department of Biosystems Engineering, Auburn University, Auburn, AL 36849, USA; Center for Bioenergy and Bioproducts, Auburn University, Auburn, AL 36849, USA.
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20
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Puseenam A, Kocharin K, Tanapongpipat S, Eurwilaichitr L, Ingsriswang S, Roongsawang N. A novel sucrose-based expression system for heterologous proteins expression in thermotolerant methylotrophic yeast Ogataea thermomethanolica. FEMS Microbiol Lett 2018; 365:5106342. [DOI: 10.1093/femsle/fny238] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/21/2018] [Indexed: 12/31/2022] Open
Affiliation(s)
- Aekkachai Puseenam
- Biodiversity and Biotechnological Resource Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Kanokarn Kocharin
- Biodiversity and Biotechnological Resource Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Sutipa Tanapongpipat
- Biodiversity and Biotechnological Resource Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Lily Eurwilaichitr
- Biodiversity and Biotechnological Resource Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Supawadee Ingsriswang
- Biodiversity and Biotechnological Resource Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Niran Roongsawang
- Biodiversity and Biotechnological Resource Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
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Cao M, Feng J, Sirisansaneeyakul S, Song C, Chisti Y. Genetic and metabolic engineering for microbial production of poly-γ-glutamic acid. Biotechnol Adv 2018; 36:1424-1433. [PMID: 29852203 DOI: 10.1016/j.biotechadv.2018.05.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 05/27/2018] [Indexed: 12/15/2022]
Abstract
Poly-γ-glutamic acid (γ-PGA) is a natural biopolymer of glutamic acid. The repeating units of γ-PGA may be derived exclusively from d-glutamic acid, or l-glutamic acid, or both. The monomer units are linked by amide bonds between the α-amino group and the γ-carboxylic acid group. γ-PGA is biodegradable, edible and water-soluble. It has numerous existing and emerging applications in processing of foods, medicines and cosmetics. This review focuses on microbial production of γ-PGA via genetically and metabolically engineered recombinant bacteria. Strategies for improving production of γ-PGA include modification of its biosynthesis pathway, enhancing the production of its precursor (glutamic acid), and preventing loss of the precursor to competing byproducts. These and other strategies are discussed. Heterologous synthesis of γ-PGA in industrial bacterial hosts that do not naturally produce γ-PGA is discussed. Emerging trends and the challenges affecting the production of γ-PGA are reviewed.
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Affiliation(s)
- Mingfeng Cao
- Department of Chemical and Biological Engineering, NSF Center for Biorenewable Chemicals (CBiRC), Iowa State University, Ames, IA 50011-1098, USA
| | - Jun Feng
- Department of Biosystems Engineering, Auburn University, Auburn, AL 36849, USA
| | - Sarote Sirisansaneeyakul
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Chatuchak, Bangkok 10900, Thailand.
| | - Cunjiang Song
- Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, Nankai University, Tianjin 300071, China
| | - Yusuf Chisti
- School of Engineering, Massey University, Private Bag 11 222, Palmerston North, New Zealand.
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