1
|
Nguyen DK, Nguyen TP, Li YR, Ohme-Takagi M, Liu ZH, Ly TT, Nguyen VA, Trinh NN, Huang HJ. Comparative study of two indoor microbial volatile pollutants, 2-Methyl-1-butanol and 3-Methyl-1-butanol, on growth and antioxidant system of rice (Oryza sativa) seedlings. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 272:116055. [PMID: 38340597 DOI: 10.1016/j.ecoenv.2024.116055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 01/24/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024]
Abstract
2-Methyl-1-butanol (2MB) and 3-Methyl-1-butanol (3MB) are microbial volatile organic compounds (VOCs) and found in indoor air. Here, we applied rice as a bioindicator to investigate the effects of these indoor microbial volatile pollutants. A remarkable decrease in germination percentage, shoot and root elongation, as well as lateral root numbers were observed in 3MB. Furthermore, ROS production increased by 2MB and 3MB, suggesting that pentanol isomers could induce cytotoxicity in rice seedlings. The enhancement of peroxidase (POD) and catalase (CAT) activity provided evidence that pentanol isomers activated the enzymatic antioxidant scavenging systems, with a more significant effect observed in 3MB. Furthermore, 3MB induced higher activity levels of glutathione (GSH), oxidized glutathione (GSSG), and the GSH/GSSG ratio in rice compared to the levels induced by 2MB. Additionally, qRT-PCR analysis showed more up-regulation in the expression of glutaredoxins (GRXs), peroxiredoxins (PRXs), thioredoxins (TRXs), and glutathione S-transferases (GSTUs) genes in 3MB. Taking the impacts of pentanol isomers together, the present study suggests that 3MB exhibits more cytotoxic than 2MB, as such has critical effects on germination and the early seedling stage of rice. Our results provide molecular insights into how isomeric indoor microbial volatile pollutants affect plant growth through airborne signals.
Collapse
Affiliation(s)
- Diem-Kieu Nguyen
- Department of Life Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Tri-Phuong Nguyen
- Department of Life Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Rong Li
- Department of Life Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Masaru Ohme-Takagi
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, Tainan, Taiwan
| | - Zin-Huang Liu
- Graduate Program in Translational Agricultural Sciences, NCKU and Academia Sinica, Taiwan
| | - Thach-Thao Ly
- Graduate Program in Translational Agricultural Sciences, NCKU and Academia Sinica, Taiwan
| | - Van-Anh Nguyen
- Department of Life Sciences, National Cheng Kung University, Tainan, Taiwan; Intellectual Property Office of Vietnam, Thanh Xuan District, Ha Noi, Vietnam
| | - Ngoc-Nam Trinh
- Industrial University of Ho Chi Minh City, Go Vap District, Ho Chi Minh, Vietnam
| | - Hao-Jen Huang
- Department of Life Sciences, National Cheng Kung University, Tainan, Taiwan; Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, Tainan, Taiwan; Graduate Program in Translational Agricultural Sciences, NCKU and Academia Sinica, Taiwan.
| |
Collapse
|
2
|
Su H, Lin J. Biosynthesis pathways of expanding carbon chains for producing advanced biofuels. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:109. [PMID: 37400889 DOI: 10.1186/s13068-023-02340-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 05/11/2023] [Indexed: 07/05/2023]
Abstract
Because the thermodynamic property is closer to gasoline, advanced biofuels (C ≥ 6) are appealing for replacing non-renewable fossil fuels using biosynthesis method that has presented a promising approach. Synthesizing advanced biofuels (C ≥ 6), in general, requires the expansion of carbon chains from three carbon atoms to more than six carbon atoms. Despite some specific biosynthesis pathways that have been developed in recent years, adequate summary is still lacking on how to obtain an effective metabolic pathway. Review of biosynthesis pathways for expanding carbon chains will be conducive to selecting, optimizing and discovering novel synthetic route to obtain new advanced biofuels. Herein, we first highlighted challenges on expanding carbon chains, followed by presentation of two biosynthesis strategies and review of three different types of biosynthesis pathways of carbon chain expansion for synthesizing advanced biofuels. Finally, we provided an outlook for the introduction of gene-editing technology in the development of new biosynthesis pathways of carbon chain expansion.
Collapse
Affiliation(s)
- Haifeng Su
- Key Laboratory of Degraded and Unused Land Consolidation Engineering, The Ministry of Natural and Resources, Xian, 710075, Shanxi, China
| | - JiaFu Lin
- Antibiotics Research and Re-Evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, 610106, China.
| |
Collapse
|
3
|
Zhu N, Xia W, Wang G, Song Y, Gao X, Liang J, Wang Y. Engineering Corynebacterium glutamicum for de novo production of 2-phenylethanol from lignocellulosic biomass hydrolysate. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:75. [PMID: 37143059 PMCID: PMC10158149 DOI: 10.1186/s13068-023-02327-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 04/24/2023] [Indexed: 05/06/2023]
Abstract
BACKGROUND 2-Phenylethanol is a specific aromatic alcohol with a rose-like smell, which has been widely used in the cosmetic and food industries. At present, 2-phenylethanol is mainly produced by chemical synthesis. The preference of consumers for "natural" products and the demand for environmental-friendly processes have promoted biotechnological processes for 2-phenylethanol production. Yet, high 2-phenylethanol cytotoxicity remains an issue during the bioproduction process. RESULTS Corynebacterium glutamicum with inherent tolerance to aromatic compounds was modified for the production of 2-phenylethanol from glucose and xylose. The sensitivity of C. glutamicum to 2-phenylethanol toxicity revealed that this host was more tolerant than Escherichia coli. Introduction of a heterologous Ehrlich pathway into the evolved phenylalanine-producing C. glutamicum CALE1 achieved 2-phenylethanol production, while combined expression of the aro10. Encoding 2-ketoisovalerate decarboxylase originating from Saccharomyces cerevisiae and the yahK encoding alcohol dehydrogenase originating from E. coli was shown to be the most efficient. Furthermore, overexpression of key genes (aroGfbr, pheAfbr, aroA, ppsA and tkt) involved in the phenylpyruvate pathway increased 2-phenylethanol titer to 3.23 g/L with a yield of 0.05 g/g glucose. After introducing a xylose assimilation pathway from Xanthomonas campestris and a xylose transporter from E. coli, 3.55 g/L 2-phenylethanol was produced by the engineered strain CGPE15 with a yield of 0.06 g/g xylose, which was 10% higher than that with glucose. This engineered strain CGPE15 also accumulated 3.28 g/L 2-phenylethanol from stalk hydrolysate. CONCLUSIONS In this study, we established and validated an efficient C. glutamicum strain for the de novo production of 2-phenylethanol from corn stalk hydrolysate. This work supplied a promising route for commodity 2-phenylethanol bioproduction from nonfood lignocellulosic feedstock.
Collapse
Affiliation(s)
- Nianqing Zhu
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, People's Republic of China
| | - Wenjing Xia
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, People's Republic of China.
- School of Chemistry and Biological Engineering, Nanjing Normal University Taizhou College, Taizhou, 225300, Jiangsu, People's Republic of China.
| | - Guanglu Wang
- Laboratory of Biotransformation and Biocatalysis, School of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, 450000, People's Republic of China
| | - Yuhe Song
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, People's Republic of China
| | - Xinxing Gao
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, People's Republic of China
| | - Jilei Liang
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, People's Republic of China
| | - Yan Wang
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, People's Republic of China
| |
Collapse
|
4
|
Cheseto X, Rering CC, Broadhead GT, Torto B, Beck JJ. Early infestation volatile biomarkers of fruit fly Bactrocera dorsalis (Hendel) ovipositional activity in mango (Mangifera indica L.). PHYTOCHEMISTRY 2023; 206:113519. [PMID: 36462541 DOI: 10.1016/j.phytochem.2022.113519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/18/2022] [Accepted: 11/19/2022] [Indexed: 06/17/2023]
Abstract
Infestation of agricultural commodities by insect pests results in significant economic, import and export, food safety, and invasive insect introduction issues for growers, consumers, and inspectors. The Oriental fruit fly (Bactrocera dorsalis) is considered a highly invasive insect pest with populations reported in more than 60 countries, with prevalent distributions in Asia and Africa. B. dorsalis is phytophagous with a host range encompassing hundreds of fruits and vegetables. Damage to the fruit or vegetable is inflicted through oviposition and subsequent larval feeding resulting in spoilage. Early detection of insect pest infestations is a critical component for ensuring food safety as well as controlling introduction and spread of invasive insects. However, detection of ovipositional activity and early larval development is visually difficult, thus rapid and non-destructive detection often relies on odors associated with infestation. We investigated the odors of mangoes (Mangifera indica L.) infested with B. dorsalis and compared the volatile profiles of infested mangoes to non-infested and mechanically damaged mangoes 24 h post-infestation. GC-MS and multivariate analyses provided the identification of eleven compounds unique to infested mangoes compared to mechanically damaged or non-infested fruit. Results indicated compositional and quantitative differentiation of volatile profiles among treatments for detection of infested fruit at quality checks or points of commerce.
Collapse
Affiliation(s)
- Xavier Cheseto
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772, 00100, Nairobi, Kenya
| | - Caitlin C Rering
- Chemistry Research Unit, Center for Medical, Agricultural and Veterinary Entomology, Agricultural Research Service, U.S. Department of Agriculture, 1700 SW 23rd Drive, Gainesville, FL, 32608, United States
| | - Geoffrey T Broadhead
- Chemistry Research Unit, Center for Medical, Agricultural and Veterinary Entomology, Agricultural Research Service, U.S. Department of Agriculture, 1700 SW 23rd Drive, Gainesville, FL, 32608, United States
| | - Baldwyn Torto
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772, 00100, Nairobi, Kenya
| | - John J Beck
- Chemistry Research Unit, Center for Medical, Agricultural and Veterinary Entomology, Agricultural Research Service, U.S. Department of Agriculture, 1700 SW 23rd Drive, Gainesville, FL, 32608, United States.
| |
Collapse
|
5
|
Volk MJ, Tran VG, Tan SI, Mishra S, Fatma Z, Boob A, Li H, Xue P, Martin TA, Zhao H. Metabolic Engineering: Methodologies and Applications. Chem Rev 2022; 123:5521-5570. [PMID: 36584306 DOI: 10.1021/acs.chemrev.2c00403] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metabolic engineering aims to improve the production of economically valuable molecules through the genetic manipulation of microbial metabolism. While the discipline is a little over 30 years old, advancements in metabolic engineering have given way to industrial-level molecule production benefitting multiple industries such as chemical, agriculture, food, pharmaceutical, and energy industries. This review describes the design, build, test, and learn steps necessary for leading a successful metabolic engineering campaign. Moreover, we highlight major applications of metabolic engineering, including synthesizing chemicals and fuels, broadening substrate utilization, and improving host robustness with a focus on specific case studies. Finally, we conclude with a discussion on perspectives and future challenges related to metabolic engineering.
Collapse
Affiliation(s)
- Michael J Volk
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Vinh G Tran
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Shih-I Tan
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Shekhar Mishra
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Zia Fatma
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Aashutosh Boob
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Hongxiang Li
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Pu Xue
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Teresa A Martin
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Huimin Zhao
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| |
Collapse
|
6
|
Kranz A, Polen T, Kotulla C, Arndt A, Bosco G, Bussmann M, Chattopadhyay A, Cramer A, Davoudi CF, Degner U, Diesveld R, Freiherr von Boeselager R, Gärtner K, Gätgens C, Georgi T, Geraths C, Haas S, Heyer A, Hünnefeld M, Ishige T, Kabus A, Kallscheuer N, Kever L, Klaffl S, Kleine B, Kočan M, Koch-Koerfges A, Kraxner KJ, Krug A, Krüger A, Küberl A, Labib M, Lange C, Mack C, Maeda T, Mahr R, Majda S, Michel A, Morosov X, Müller O, Nanda AM, Nickel J, Pahlke J, Pfeifer E, Platzen L, Ramp P, Rittmann D, Schaffer S, Scheele S, Spelberg S, Schulte J, Schweitzer JE, Sindelar G, Sorger-Herrmann U, Spelberg M, Stansen C, Tharmasothirajan A, Ooyen JV, van Summeren-Wesenhagen P, Vogt M, Witthoff S, Zhu L, Eikmanns BJ, Oldiges M, Schaumann G, Baumgart M, Brocker M, Eggeling L, Freudl R, Frunzke J, Marienhagen J, Wendisch VF, Bott M. A manually curated compendium of expression profiles for the microbial cell factory Corynebacterium glutamicum. Sci Data 2022; 9:594. [PMID: 36182956 PMCID: PMC9526701 DOI: 10.1038/s41597-022-01706-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 08/18/2022] [Indexed: 11/12/2022] Open
Abstract
Corynebacterium glutamicum is the major host for the industrial production of amino acids and has become one of the best studied model organisms in microbial biotechnology. Rational strain construction has led to an improvement of producer strains and to a variety of novel producer strains with a broad substrate and product spectrum. A key factor for the success of these approaches is detailed knowledge of transcriptional regulation in C. glutamicum. Here, we present a large compendium of 927 manually curated microarray-based transcriptional profiles for wild-type and engineered strains detecting genome-wide expression changes of the 3,047 annotated genes in response to various environmental conditions or in response to genetic modifications. The replicates within the 927 experiments were combined to 304 microarray sets ordered into six categories that were used for differential gene expression analysis. Hierarchical clustering confirmed that no outliers were present in the sets. The compendium provides a valuable resource for future fundamental and applied research with C. glutamicum and contributes to a systemic understanding of this microbial cell factory.Measurement(s) | Gene Expression Analysis | Technology Type(s) | Two Color Microarray | Factor Type(s) | WT condition A vs. WT condition B • Plasmid-based gene overexpression in parental strain vs. parental strain with empty vector control • Deletion mutant vs. parental strain | Sample Characteristic - Organism | Corynebacterium glutamicum | Sample Characteristic - Environment | laboratory environment | Sample Characteristic - Location | Germany |
Collapse
Affiliation(s)
- Angela Kranz
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany. .,IBG-4: Bioinformatics, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany.
| | - Tino Polen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Christian Kotulla
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Annette Arndt
- Institute of Microbiology and Biotechnology, University of Ulm, D-89069, Ulm, Germany
| | - Graziella Bosco
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Michael Bussmann
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Ava Chattopadhyay
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Annette Cramer
- Institute of Microbiology and Biotechnology, University of Ulm, D-89069, Ulm, Germany
| | - Cedric-Farhad Davoudi
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Ursula Degner
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Ramon Diesveld
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | | | - Kim Gärtner
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Cornelia Gätgens
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Tobias Georgi
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Christian Geraths
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Sabine Haas
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Antonia Heyer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Max Hünnefeld
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Takeru Ishige
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Armin Kabus
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Nicolai Kallscheuer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Larissa Kever
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Simon Klaffl
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Britta Kleine
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Martina Kočan
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Abigail Koch-Koerfges
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Kim J Kraxner
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Andreas Krug
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Aileen Krüger
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Andreas Küberl
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Mohamed Labib
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Christian Lange
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Christina Mack
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Tomoya Maeda
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Regina Mahr
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Stephan Majda
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Andrea Michel
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Xenia Morosov
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Olga Müller
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Arun M Nanda
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jens Nickel
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jennifer Pahlke
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Eugen Pfeifer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Laura Platzen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Paul Ramp
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Doris Rittmann
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Steffen Schaffer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Sandra Scheele
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Stephanie Spelberg
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Julia Schulte
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jens-Eric Schweitzer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Georg Sindelar
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Ulrike Sorger-Herrmann
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Markus Spelberg
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Corinna Stansen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Apilaasha Tharmasothirajan
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jan van Ooyen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | | | - Michael Vogt
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Sabrina Witthoff
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Lingfeng Zhu
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Bernhard J Eikmanns
- Institute of Microbiology and Biotechnology, University of Ulm, D-89069, Ulm, Germany
| | - Marco Oldiges
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Georg Schaumann
- SenseUp GmbH, c/o Campus Forschungszentrum, Wilhelm-Johnen-Strasse, D-52425, Jülich, Germany
| | - Meike Baumgart
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Melanie Brocker
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Lothar Eggeling
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Roland Freudl
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Julia Frunzke
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jan Marienhagen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Volker F Wendisch
- Genetics of Prokaryotes, Biology & CeBiTec, Bielefeld University, Universitaetsstr. 25, D-33615, Bielefeld, Germany
| | - Michael Bott
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany.
| |
Collapse
|
7
|
Ghanadzadeh Gilani A, Mohammadi Khanghah B, Jahanbin Sardroodi J, Pazuki G. Liquid–Liquid Equilibria for Binary Azeotrope Mixtures of Heptane and Amyl Alcohols Using Different Choline Chloride Based Deep Eutectic Solvents at 298.15 K. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ali Ghanadzadeh Gilani
- Department of Chemistry, Faculty of Science, University of Guilan, 413351914 Rasht, Iran
| | | | - Jaber Jahanbin Sardroodi
- Department of Chemistry, Faculty of Science, Azarbaijan Shahid Madani University, 5375171379 Tabriz, Iran
| | - Gholamreza Pazuki
- Department of Chemical Engineering, Amirkabir University of Technology, 1591634311 Tehran, Iran
| |
Collapse
|
8
|
High-level Production of Isoleucine and Fusel alcohol by expression of the Feedback Inhibition-insensitive Threonine deaminase in Saccharomyces cerevisiae. Appl Environ Microbiol 2022; 88:e0213021. [PMID: 35020456 PMCID: PMC8904041 DOI: 10.1128/aem.02130-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A variety of the yeast Saccharomyces cerevisiae with intracellular accumulation of isoleucine (Ile) would be a promising strain for developing a distinct kind of sake, a traditional Japanese alcoholic beverage, because Ile-derived volatile compounds have a great impact on the flavor and taste of fermented foods. In this study, we isolated an Ile-accumulating mutant (strain K9-I48) derived from a diploid sake yeast of S. cerevisiae by conventional mutagenesis. Strain K9-I48 carries a novel mutation in the ILV1 gene encoding the His480Tyr variant of threonine deaminase (TD). Interestingly, the TD activity of the His480Tyr variant was markedly insensitive to feedback inhibition by Ile, but was not upregulated by valine, leading to intracellular accumulation of Ile and extracellular overproduction of 2-methyl-1-butanol, a fusel alcohol derived from Ile, in yeast cells. The present study demonstrated for the first time that the conserved histidine residue located in a linker region between two regulatory domains is involved in allosteric regulation of TD. Moreover, sake brewed with strain K9-I48 contained 2 to 3 times more 2-methyl-1-butanol and 2-methylbutyl acetate than sake brewed with the parent strain. These findings are valuable for the engineering of TD to increase the productivity of Ile and its derived fusel alcohols. IMPORTANCE Fruit-like flavors of isoleucine-derived volatile compounds, 2-methyl-1-butanol (2MB) and its acetate ester, contribute to a variety of the flavors and tastes of alcoholic beverages. Besides its value as aroma components in foods and cosmetics, 2MB has attracted significant attention as second-generation biofuels. Threonine deaminase (TD) catalyzes the first step in isoleucine biosynthesis and its activity is subject to feedback inhibition by isoleucine. Here, we isolated an isoleucine-accumulating sake yeast mutant and identified a mutant gene encoding a novel variant of TD. The variant TD exhibited much less sensitivity to isoleucine, leading to higher production of 2MB as well as isoleucine than the wild-type TD. Furthermore, sake brewed with a mutant yeast expressing the variant TD contained more 2MB and its acetate ester than that brewed with the parent strain. These findings will contribute to the development of superior industrial yeast strains for high-level production of isoleucine and its related fusel alcohols.
Collapse
|
9
|
Bahls MO, Platz L, Morgado G, Schmidt GW, Panke S. Directed evolution of biofuel-responsive biosensors for automated optimization of branched-chain alcohol biosynthesis. Metab Eng 2021; 69:98-111. [PMID: 34767976 DOI: 10.1016/j.ymben.2021.10.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 10/21/2021] [Accepted: 10/31/2021] [Indexed: 12/18/2022]
Abstract
The biosynthesis of short-chain alcohols is a carbon-neutral alternative to petroleum-derived production, but strain screening operations are encumbered by laborious analytics. Here, we built, characterized and applied whole cell biosensors by directed evolution of the transcription factor AlkS for screening microbial strain libraries producing industrially relevant alcohols. A selected AlkS variant was applied for in situ product detection in two screening applications concerning key steps in alcohol production. Further, the biosensor strains enabled the implementation of an automated, robotic platform-based workflow with data clustering, which readily allowed the identification of significantly improved strain variants for isopentanol production.
Collapse
Affiliation(s)
- Maximilian O Bahls
- Department of Biosystems Science and Engineering, ETH Zurich, Switzerland
| | - Lukas Platz
- Department of Biosystems Science and Engineering, ETH Zurich, Switzerland
| | - Gaspar Morgado
- Department of Biosystems Science and Engineering, ETH Zurich, Switzerland
| | - Gregor W Schmidt
- Department of Biosystems Science and Engineering, ETH Zurich, Switzerland
| | - Sven Panke
- Department of Biosystems Science and Engineering, ETH Zurich, Switzerland.
| |
Collapse
|
10
|
Ghanadzadeh Gilani A, Jahanbin sardroodi J, Verpoort F, Rahmdel S. Experimental study and thermodynamic modeling of phase equilibria of systems containing cyclohexane, alcohols (C4 and C5), and deep eutectic solvents. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117196] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
11
|
Tsuge Y, Yamaguchi A. Physiological characteristics of Corynebacterium glutamicum as a cell factory under anaerobic conditions. Appl Microbiol Biotechnol 2021; 105:6173-6181. [PMID: 34402937 DOI: 10.1007/s00253-021-11474-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 12/25/2022]
Abstract
Corynebacterium glutamicum, a gram-positive and facultative anaerobic bacterium, is widely used for the industrial production of amino acids, such as L-glutamate and L-lysine. C. glutamicum grows and produces amino acids under aerobic conditions. When restricted under anaerobic conditions, it produces organic acids, such as L-lactate and succinate, through metabolic shift. With the increasing threat of global warming, these organic acids have drawn considerable attention as bio-based plastic monomers. In addition to the organic acids, the anaerobic bioprocess is also used to produce other value-added compounds, including isobutanol, ethanol, 3-methyl-1-butanol, 2,3-butanediol, L-alanine, and L-valine. Therefore, C. glutamicum is now a versatile cell factory for producing a wide variety of useful chemicals under both aerobic and anaerobic conditions. The growth and metabolism of the bacterium depend on the oxygen levels, which modulate the rearrangement of the carbon flux by reprogramming gene expression patterns and intracellular redox states. Anaerobic cell growth and L-lysine production as well as aerobic succinate production have been demonstrated by engineering the metabolic pathways or supplying a terminal electron acceptor instead of oxygen. In this review, we discuss the physiological and metabolic changes in C. glutamicum associated with its application as a cell factory under different oxygen states. Physiological switching in bacteria is initiated with the sensing of oxygen availability. While such a sensor has not been identified in C. glutamicum yet, the molecular mechanism for oxygen sensing in related bacteria is also discussed. KEY POINTS: • C. glutamicum produces a wide variety of useful compounds under anaerobic conditions. • C. glutamicum is a versatile cell factory under both aerobic and anaerobic conditions. • Metabolic fate can be overcome by engineering metabolic pathways.
Collapse
Affiliation(s)
- Yota Tsuge
- Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan.
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan.
| | - Akira Yamaguchi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan
| |
Collapse
|
12
|
Zhao Y, Liu S, Lu Z, Zhao B, Wang S, Zhang C, Xiao D, Foo JL, Yu A. Hybrid promoter engineering strategies in Yarrowia lipolytica: isoamyl alcohol production as a test study. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:149. [PMID: 34215293 PMCID: PMC8252286 DOI: 10.1186/s13068-021-02002-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 06/22/2021] [Indexed: 05/11/2023]
Abstract
BACKGROUND In biological cells, promoters drive gene expression by specific binding of RNA polymerase. They determine the starting position, timing and level of gene expression. Therefore, rational fine-tuning of promoters to regulate the expression levels of target genes for optimizing biosynthetic pathways in metabolic engineering has recently become an active area of research. RESULTS In this study, we systematically detected and characterized the common promoter elements in the unconventional yeast Yarrowia lipolytica, and constructed an artificial hybrid promoter library that covers a wide range of promoter strength. The results indicate that the hybrid promoter strength can be fine-tuned by promoter elements, namely, upstream activation sequences (UAS), TATA box and core promoter. Notably, the UASs of Saccharomyces cerevisiae promoters were reported for the first time to be functionally transferred to Y. lipolytica. Subsequently, using the production of a versatile platform chemical isoamyl alcohol as a test study, the hybrid promoter library was applied to optimize the biosynthesis pathway expression in Y. lipolytica. By expressing the key pathway gene, ScARO10, with the promoter library, 1.1-30.3 folds increase in the isoamyl alcohol titer over that of the control strain Y. lipolytica Po1g KU70∆ was achieved. Interestingly, the highest titer increase was attained with a weak promoter PUAS1B4-EXPm to express ScARO10. These results suggest that our hybrid promoter library can be a powerful toolkit for identifying optimum promoters for expressing metabolic pathways in Y. lipolytica. CONCLUSION We envision that this promoter engineering strategy and the rationally engineered promoters constructed in this study could also be extended to other non-model fungi for strain improvement.
Collapse
Affiliation(s)
- Yu Zhao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, No. 29 the 13th Street TEDA, Tianjin, 300457 People’s Republic of China
| | - Shiqi Liu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, No. 29 the 13th Street TEDA, Tianjin, 300457 People’s Republic of China
| | - Zhihui Lu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, No. 29 the 13th Street TEDA, Tianjin, 300457 People’s Republic of China
| | - Baixiang Zhao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, No. 29 the 13th Street TEDA, Tianjin, 300457 People’s Republic of China
| | - Shuhui Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, No. 29 the 13th Street TEDA, Tianjin, 300457 People’s Republic of China
| | - Cuiying Zhang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, No. 29 the 13th Street TEDA, Tianjin, 300457 People’s Republic of China
| | - Dongguang Xiao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, No. 29 the 13th Street TEDA, Tianjin, 300457 People’s Republic of China
| | - Jee Loon Foo
- Synthetic Biology Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119228 Singapore
- NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI), National University of Singapore, Singapore, 117456 Singapore
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597 Singapore
| | - Aiqun Yu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, No. 29 the 13th Street TEDA, Tianjin, 300457 People’s Republic of China
| |
Collapse
|
13
|
Recent progress in metabolic engineering of Corynebacterium glutamicum for the production of C4, C5, and C6 chemicals. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-021-0788-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
Runguphan W, Sae-Tang K, Tanapongpipat S. Recent advances in the microbial production of isopentanol (3-Methyl-1-butanol). World J Microbiol Biotechnol 2021; 37:107. [PMID: 34043086 DOI: 10.1007/s11274-021-03074-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 05/17/2021] [Indexed: 10/21/2022]
Abstract
As the effects of climate change become increasingly severe, metabolic engineers and synthetic biologists are looking towards greener sources for transportation fuels. The design and optimization of microorganisms to produce gasoline, diesel, and jet fuel compounds from renewable feedstocks can significantly reduce dependence on fossil fuels and thereby produce fewer emissions. Over the past two decades, a tremendous amount of research has contributed to the development of microbial strains to produce advanced fuel compounds, including branched-chain higher alcohols (BCHAs) such as isopentanol (3-methyl-1-butanol; 3M1B) and isobutanol (2-methyl-1-propanol). In this review, we provide an overview of recent advances in the development of microbial strains for the production of isopentanol in both conventional and non-conventional hosts. We also highlight metabolic engineering strategies that may be employed to enhance product titers, reduce end-product toxicity, and broaden the substrate range to non-sugar carbon sources. Finally, we offer glimpses into some promising future directions in the development of isopentanol producing microbial strains.
Collapse
Affiliation(s)
- Weerawat Runguphan
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, 12120, Pathumthani, Thailand.
| | - Kittapong Sae-Tang
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, 12120, Pathumthani, Thailand
| | - Sutipa Tanapongpipat
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, 12120, Pathumthani, Thailand
| |
Collapse
|
15
|
Capo A, Natalello A, Marienhagen J, Pennacchio A, Camarca A, Di Giovanni S, Staiano M, D'Auria S, Varriale A. Structural features of the glutamate-binding protein from Corynebacterium glutamicum. Int J Biol Macromol 2020; 162:903-912. [PMID: 32593757 DOI: 10.1016/j.ijbiomac.2020.06.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 06/05/2020] [Accepted: 06/21/2020] [Indexed: 10/24/2022]
Abstract
L-glutamate (Glu) is the major excitatory transmitter in mammalian brain. Inadequate concentration of Glu in the brain correlates to mood disorder. In industry, Glu is used as a flavour enhancer in food and in foodstuff processing. A high concentration of Glu has several effects on human health such as hypersensitive effects, headache and stomach pain. The presence of Glu in food can be detected by different analytical methods based on chromatography, or capillary electrophoresis or amperometric techniques. We have isolated and characterized a glutamate-binding protein (GluB) from the Gram-positive bacteria Corynebacterium glutamicum. Together with GluC protein, GluD protein and the cytoplasmic protein GluA, GluB permits the transport of Glu in/out of cell. In this study, we have investigated the binding features of GluB as well as the effect of temperature on its structure both in the absence and in the presence of Glu. The results have showed that GluB has a high affinity and selectivity versus Glu (nanomolar range) and the presence of the ligand induces a higher thermal stability of the protein structure.
Collapse
Affiliation(s)
- Alessandro Capo
- Institute of Food Science CNR, via Roma 64, 83100 Avellino, Italy
| | - Antonino Natalello
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, P.zza della Scienza 2, 20126 Milano, Italy
| | - Jan Marienhagen
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich, 52425 Jülich, Germany; Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, D-52074 Aachen, Germany
| | | | | | | | - Maria Staiano
- Institute of Food Science CNR, via Roma 64, 83100 Avellino, Italy
| | - Sabato D'Auria
- Institute of Food Science CNR, via Roma 64, 83100 Avellino, Italy.
| | - Antonio Varriale
- Institute of Food Science CNR, via Roma 64, 83100 Avellino, Italy
| |
Collapse
|
16
|
Sato N, Kishida M, Nakano M, Hirata Y, Tanaka T. Metabolic Engineering of Shikimic Acid-Producing Corynebacterium glutamicum From Glucose and Cellobiose Retaining Its Phosphotransferase System Function and Pyruvate Kinase Activities. Front Bioeng Biotechnol 2020; 8:569406. [PMID: 33015020 PMCID: PMC7511668 DOI: 10.3389/fbioe.2020.569406] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 08/19/2020] [Indexed: 01/23/2023] Open
Abstract
The production of aromatic compounds by microbial production is a promising and sustainable approach for producing biomolecules for various applications. We describe the metabolic engineering of Corynebacterium glutamicum to increase its production of shikimic acid. Shikimic acid and its precursor-consuming pathways were blocked by the deletion of the shikimate kinase, 3-dehydroshikimate dehydratase, shikimate dehydratase, and dihydroxyacetone phosphate phosphatase genes. Plasmid-based expression of shikimate pathway genes revealed that 3-deoxy-D-arabino-heptulosonate 7-phosphate (DAHP) synthase, encoded by aroG, and DHQ synthase, encoded by aroB, are key enzymes for shikimic acid production in C. glutamicum. We constructed a C. glutamicum strain with aroG, aroB and aroE3 integrated. This strain produced 13.1 g/L of shikimic acid from 50 g/L of glucose, a yield of 0.26 g-shikimic acid/g-glucose, and retained both its phosphotransferase system and its pyruvate kinase activity. We also endowed β-glucosidase secreting ability to this strain. When cellobiose was used as a carbon source, the strain produced shikimic acid at 13.8 g/L with the yield of 0.25 g-shikimic acid/g-glucose (1 g of cellobiose corresponds to 1.1 g of glucose). These results demonstrate the feasibility of producing shikimic acid and its derivatives using an engineered C. glutamicum strain from cellobiose as well as glucose.
Collapse
Affiliation(s)
- Naoki Sato
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Mayumi Kishida
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Mariko Nakano
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Yuuki Hirata
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Tsutomu Tanaka
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
| |
Collapse
|
17
|
Huang M, Zhao Y, Feng L, Zhu L, Zhan L, Chen X. Role of ClpB From Corynebacterium crenatum in Thermal Stress and Arginine Fermentation. Front Microbiol 2020; 11:1660. [PMID: 32765470 PMCID: PMC7380099 DOI: 10.3389/fmicb.2020.01660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 06/25/2020] [Indexed: 12/04/2022] Open
Abstract
ClpB, an ATP-dependent molecular chaperone, is involved in metabolic pathways and plays important roles in microorganisms under stress conditions. Metabolic pathways and stress resistance are important characteristics of industrially -relevant bacteria during fermentation. Nevertheless, ClpB-related observations have been rarely reported in industrially -relevant microorganisms. Herein, we found a homolog of ClpB from Corynebacterium crenatum. The amino acid sequence of ClpB was analyzed, and the recombinant ClpB protein was purified and characterized. The full function of ClpB requires DnaK as chaperone protein. For this reason, dnaK/clpB deletion mutants and the complemented strains were constructed to investigate the role of ClpB. The results showed that DnaK/ClpB is not essential for the survival of C. crenatum MT under pH and alcohol stresses. The ClpB-deficient or DnaK-deficient C. crenatum mutants showed weakened growth during thermal stress. In addition, the results demonstrated that deletion of the clpB gene affected glucose consumption and L-arginine, L-glutamate, and lactate production during fermentation.
Collapse
Affiliation(s)
- Mingzhu Huang
- Department of Life Science, Jiangxi Normal University, Nanchang, China.,Key Laboratory of Functional Small Organic Molecule of Ministry of Education, Jiangxi Normal University, Nanchang, China
| | - Yue Zhao
- Department of Life Science, Jiangxi Normal University, Nanchang, China
| | - Lin Feng
- Department of Life Science, Jiangxi Normal University, Nanchang, China
| | - Lingfeng Zhu
- Department of Life Science, Jiangxi Normal University, Nanchang, China
| | - Li Zhan
- Department of Life Science, Jiangxi Normal University, Nanchang, China
| | - Xuelan Chen
- Department of Life Science, Jiangxi Normal University, Nanchang, China.,Key Laboratory of Functional Small Organic Molecule of Ministry of Education, Jiangxi Normal University, Nanchang, China
| |
Collapse
|
18
|
Uchikura H, Toyoda K, Matsuzawa H, Mizuno H, Ninomiya K, Takahashi K, Inui M, Tsuge Y. Anaerobic glucose consumption is accelerated at non-proliferating elevated temperatures through upregulation of a glucose transporter gene in Corynebacterium glutamicum. Appl Microbiol Biotechnol 2020; 104:6719-6729. [PMID: 32556410 DOI: 10.1007/s00253-020-10739-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 06/05/2020] [Accepted: 06/09/2020] [Indexed: 11/25/2022]
Abstract
Cell proliferation is achieved through numerous enzyme reactions. Temperature governs the activity of each enzyme, ultimately determining the optimal growth temperature. The synthesis of useful chemicals and fuels utilizes a fraction of available metabolic pathways, primarily central metabolic pathways including glycolysis and the tricarboxylic acid cycle. However, it remains unclear whether the optimal temperature for these pathways is correlated with that for cell proliferation. Here, we found that wild-type Corynebacterium glutamicum displayed increased glycolytic activity under non-growing anaerobic conditions at 42.5 °C, at which cells do not proliferate under aerobic conditions. At this temperature, glucose consumption was not inhibited and increased by 28% compared with that at the optimal growth temperature of 30 °C. Transcriptional analysis revealed that a gene encoding glucose transporter (iolT2) was upregulated by 12.3-fold compared with that at 30 °C, with concomitant upregulation of NCgl2954 encoding the iolT2-regulating transcription factor. Deletion of iolT2 decreased glucose consumption rate at 42.5 °C by 28%. Complementation of iolT2 restored glucose consumption rate, highlighting the involvement of iolT2 in the accelerating glucose consumption at an elevated temperature. This study shows that the optimal temperature for glucose metabolism in C. glutamicum under anaerobic conditions differs greatly from that for cell growth under aerobic conditions, being beyond the upper limit of the growth temperature. This is beneficial for fuel and chemical production not only in terms of increasing productivity but also for saving cooling costs. KEY POINTS: • C. glutamicum accelerated anaerobic glucose consumption at elevated temperature. • The optimal temperature for glucose consumption was above the upper limit for growth. • Gene expression involved in glucose transport was upregulated at elevated temperature. Graphical abstract.
Collapse
Affiliation(s)
- Hiroto Uchikura
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Koichi Toyoda
- Research Institute of Innovative Technology for the Earth, Kizugawa, Kyoto, Japan
| | - Hiroki Matsuzawa
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Hikaru Mizuno
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Kazuaki Ninomiya
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
- Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan
| | - Kenji Takahashi
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Masayuki Inui
- Research Institute of Innovative Technology for the Earth, Kizugawa, Kyoto, Japan
| | - Yota Tsuge
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan.
- Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan.
| |
Collapse
|
19
|
Development of a Simple Colorimetric Assay for Determination of the Isoamyl Alcohol-Producing Strain. Appl Biochem Biotechnol 2020; 192:632-642. [PMID: 32500427 DOI: 10.1007/s12010-020-03353-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/22/2020] [Indexed: 01/13/2023]
Abstract
Like other branched-chain higher alcohols used as biofuels, isoamyl alcohol has attracted considerable attention because of its advantages, which include high energy density, low hygroscopicity, and compatibility with the current infrastructure. Previous attempts to increase the microbial production of isoamyl alcohol have yielded great progress, but the existing methods of detecting isoamyl alcohol based on gas chromatography and high-performance liquid chromatography are laborious and time-consuming. In this study, we developed a simple colorimetric assay to determine high isoamyl alcohol-producing strains. The assay was based on isoamyl alcohol oxidase and peroxidase (IAOP assay) and could be performed in microplate with high throughput and had a specific detection range of 0-20 mM. Characterization analysis revealed that the developed IAOP assay was highly specific for isoamyl alcohol relative to other branched-chain alcohols. Little interference with the assay was observed from the fermentation media, microorganisms, and fermentation byproducts (e.g., lactic acid, acetic acid). We conclude that the enzyme-based IAOP assay can be used for high-throughput monitoring of strains that produce isoamyl alcohol and could be adjusted to screen for strains that produce many other metabolites.
Collapse
|
20
|
Siripong W, Angela C, Tanapongpipat S, Runguphan W. Metabolic engineering of Pichia pastoris for production of isopentanol (3-Methyl-1-butanol). Enzyme Microb Technol 2020; 138:109557. [PMID: 32527534 DOI: 10.1016/j.enzmictec.2020.109557] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/24/2020] [Accepted: 03/26/2020] [Indexed: 12/21/2022]
Abstract
In recent years, the increasingly serious and clear effects of climate change have increased interest in renewable fuels and platform chemicals. Microbial platforms that can produce these compounds in an economically efficient way have emerged as an attractive alternative to the traditional production approaches. Here, we engineered the industrially-relevant yeast Pichia pastoris to produce the platform chemical 3-methyl-1-butanol (3M1B, isopentanol) directly from the renewable carbon source glucose. Specifically, we overexpressed the endogenous valine and leucine biosynthetic pathways to increase the production of the key pathway intermediate, 2-ketoisocaproate (2-KIC). Overexpression of the artificial keto-acid degradation pathway converted 2-KIC into 3M1B. Down-regulation of the side-product ethanol production using the CRISPR/Cas9 system led to a strain that is able to produce 3M1B at a titer of 191.0 ± 9.6 mg/L, the highest titer reported to date in a non-conventional yeast. We envision that our yeast system will pave the way for an efficient production system for this important class of platform compounds.
Collapse
Affiliation(s)
- Wiparat Siripong
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
| | - Clara Angela
- Indonesia International Institute for Life-Sciences, Jl. Pulomas Barat Kav. 88, Kayu Putih, Pulo Gadung, Jakarta Timur, 13210, Indonesia
| | - Sutipa Tanapongpipat
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
| | - Weerawat Runguphan
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand.
| |
Collapse
|
21
|
Uchikura H, Ninomiya K, Takahashi K, Tsuge Y. Requirement of de novo synthesis of pyruvate carboxylase in long-term succinic acid production in Corynebacterium glutamicum. Appl Microbiol Biotechnol 2020; 104:4313-4320. [PMID: 32232530 DOI: 10.1007/s00253-020-10556-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/11/2020] [Accepted: 03/16/2020] [Indexed: 11/28/2022]
Abstract
Protein turnover through de novo synthesis is critical for sustainable cellular functions. We previously found that glucose consumption rate in Corynebacterium glutamicum under anaerobic conditions increased at temperature higher than the upper limit of growth temperature. Here, we showed that production of lactic and succinic acids increased at higher temperature for long-term (48 h) anaerobic reaction in metabolically engineered strains. At 42 °C, beyond the upper limit of growth temperature range, biomass-specific lactic acid production rate was 8% higher than that at 30 °C, the optimal growth temperature. In contrast, biomass-specific succinic acid production rate was highest at 36 °C, 28% higher than that at 30 °C, although the production at 42 °C was still 23% higher than that at 30 °C. As enzymes are usually unstable at high temperatures, we investigated whether protein turnover of metabolic enzymes is required for the production of lactic and succinic acids under these conditions. Interestingly, when de novo protein synthesis was inhibited by addition of chloramphenicol, after 6 h, only succinic acid production was inhibited. Because glycolytic enzymes are involved in both lactic and succinic acids synthesis, enzymes in the anaplerotic pathway and the tricarboxylic acid (TCA) cycle leading to succinic acid synthesis were likely to be responsible for its decreased production. Among the five enzymes examined, the specific activity of only pyruvate carboxylase was drastically decreased after 48 h at 42 °C. Thus, the de novo synthesis of pyruvate carboxylase is required for long-term production of succinic acid. Graphical abstract KEY POINTS: • Long-term reaction for organic acids can be improved at temperature beyond ideal growth conditions. • De novo synthesis of pyruvate carboxylase is required for long-term succinic acid production.
Collapse
Affiliation(s)
- Hiroto Uchikura
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan
| | - Kazuaki Ninomiya
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan.,Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan
| | - Kenji Takahashi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan
| | - Yota Tsuge
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan. .,Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan.
| |
Collapse
|
22
|
Lamounier KFR, Rodrigues PDO, Pasquini D, Dos Santos AS, Baffi MA. Ethanol Production and Other Bioproducts by Galactomyces geotrichum from Sugarcane Bagasse Hydrolysate. Curr Microbiol 2020; 77:738-745. [PMID: 31915987 DOI: 10.1007/s00284-019-01866-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 12/30/2019] [Indexed: 10/25/2022]
Abstract
This study investigated the enzymatic saccharification of alkaline-pretreated sugarcane bagasse (PSB) and the bioconversion of simple sugars from hydrolysates to ethanol and other bioproducts by the yeast Galactomyces geotrichum. The effects of percentage of dry substrate (3 and 10% w/v) and time of hydrolysis (24 and 72 h) in the content of released sugars were evaluated. The concentrations of monosaccharides and total reducing sugars (TRS) were calculated by high-performance liquid chromatography (HPLC) and by 3.5-dinitrosalicylic acid (DNS) method, respectively. The highest concentrations of TRS, glucose and xylose (73.96, 31.78 and 10.85 g/L, respectively) were obtained after the saccharification of 10% of PSB with Cellic CTec3 multi-enzyme cocktail (10 FPU/g cellulose) during 72 h (hydrolysate IV). G. geotrichum UFVJM-R150 fermented both glucose and xylose from the hydrolysates. The most efficient ethanol production was obtained after the fermentation of hydrolysate IV (9.99 g/L of ethanol, volumetric productivity-QP of 0.42 g/L.h and yield of ethanol as a function of the substrate-YP/S of 0.27 gethanol/gsugar). Besides ethanol, G. geotrichum was also able to produce other high-value chemicals such as isoamyl alcohol and galacturonic acid. This is the first report of the potential of the yeast G. geotrichum to fermentate sugarcane bagasse hydrolysates with the production of important bioproducts to further use by biorefineries.
Collapse
Affiliation(s)
| | - Patrisia de Oliveira Rodrigues
- Federal University of Uberlândia, Agricultural Sciences Institute (ICIAG-UFU), Uberlândia, Minas Gerais, 38405-320, Brazil
| | - Daniel Pasquini
- Federal University of Uberlândia, Chemical Institute (IQ-UFU), Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Alexandre Soares Dos Santos
- Department of Basic Sciences (UFVJM), Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais, 39803-371, Brazil
| | - Milla Alves Baffi
- Federal University of Uberlândia, Agricultural Sciences Institute (ICIAG-UFU), Uberlândia, Minas Gerais, 38405-320, Brazil.
| |
Collapse
|
23
|
Calcagnile M, Tredici SM, Talà A, Alifano P. Bacterial Semiochemicals and Transkingdom Interactions with Insects and Plants. INSECTS 2019; 10:E441. [PMID: 31817999 PMCID: PMC6955855 DOI: 10.3390/insects10120441] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/02/2019] [Accepted: 12/05/2019] [Indexed: 01/08/2023]
Abstract
A peculiar feature of all living beings is their capability to communicate. With the discovery of the quorum sensing phenomenon in bioluminescent bacteria in the late 1960s, it became clear that intraspecies and interspecies communications and social behaviors also occur in simple microorganisms such as bacteria. However, at that time, it was difficult to imagine how such small organisms-invisible to the naked eye-could influence the behavior and wellbeing of the larger, more complex and visible organisms they colonize. Now that we know this information, the challenge is to identify the myriad of bacterial chemical signals and communication networks that regulate the life of what can be defined, in a whole, as a meta-organism. In this review, we described the transkingdom crosstalk between bacteria, insects, and plants from an ecological perspective, providing some paradigmatic examples. Second, we reviewed what is known about the genetic and biochemical bases of the bacterial chemical communication with other organisms and how explore the semiochemical potential of a bacterium can be explored. Finally, we illustrated how bacterial semiochemicals managing the transkingdom communication may be exploited from a biotechnological point of view.
Collapse
Affiliation(s)
| | | | | | - Pietro Alifano
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Prov.le Lecce-Monteroni, 73100 Lecce, Italy; (M.C.); (S.M.T.); (A.T.)
| |
Collapse
|
24
|
Kallscheuer N, Kage H, Milke L, Nett M, Marienhagen J. Microbial synthesis of the type I polyketide 6-methylsalicylate with Corynebacterium glutamicum. Appl Microbiol Biotechnol 2019; 103:9619-9631. [DOI: 10.1007/s00253-019-10121-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 08/26/2019] [Accepted: 09/04/2019] [Indexed: 12/28/2022]
|
25
|
Systems biology based metabolic engineering for non-natural chemicals. Biotechnol Adv 2019; 37:107379. [DOI: 10.1016/j.biotechadv.2019.04.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/23/2019] [Accepted: 04/01/2019] [Indexed: 12/17/2022]
|
26
|
Shi T, Ma Q, Liu X, Hao Y, Li Y, Xu Q, Xie X, Chen N. Double deletion of murA and murB induced temperature sensitivity in Corynebacterium glutamicum. Bioengineered 2019; 10:561-573. [PMID: 31648597 PMCID: PMC6844371 DOI: 10.1080/21655979.2019.1685058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Currently, the mechanism of temperature-sensitive production of glutamate in Corynebacterium glutamicum has not been clarified. We first found the murA and murB genes were potentially related to temperature-sensitive secretion of glutamate, which were not existed in a temperature-sensitive mutant. When replenishing murA or/and murB in the mutant, the temperature sensitivity was weakened. While, their knockout in a wild-type strain resulted in temperature-sensitive secretion of glutamate. Peptidoglycan analysis showed that deletion of murA and murB decreased the peptidoglycan synthesis. Comparative metabolomics analysis suggested that the variation in cell wall structure resulted in decreased overall cellular metabolism but increased carbon flow to glutamate synthesis, which was a typical metabolism pattern in industrial temperature-sensitive producing strains. This study clarifies the mechanism between murA and murB deletion and the temperature-sensitive secretion of glutamate in C. glutamcium, and provides a reference for the metabolic engineering of cell wall to obtain increased bioproduction of chemicals.
Collapse
Affiliation(s)
- Tuo Shi
- Key Laboratory of Industrial Fermentation Microbiology, Tianjin University of Science & Technology, Ministry of Education, Tianjin, P. R. China.,Tianjin Key Laboratory of Industrial Microbiology, Tianjin University of Science & Technology, Tianjin, P. R. China
| | - Qian Ma
- Key Laboratory of Industrial Fermentation Microbiology, Tianjin University of Science & Technology, Ministry of Education, Tianjin, P. R. China.,Tianjin Key Laboratory of Industrial Microbiology, Tianjin University of Science & Technology, Tianjin, P. R. China.,College of Biotechnology, Tianjin University of Science & Technology, Tianjin, P. R. China.,National and Local United Engineering Lab of Metabolic Control Fermentation Technology, Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Xiaoqian Liu
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin, P. R. China
| | - Yanan Hao
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin, P. R. China
| | - Yanjun Li
- Key Laboratory of Industrial Fermentation Microbiology, Tianjin University of Science & Technology, Ministry of Education, Tianjin, P. R. China.,Tianjin Key Laboratory of Industrial Microbiology, Tianjin University of Science & Technology, Tianjin, P. R. China.,College of Biotechnology, Tianjin University of Science & Technology, Tianjin, P. R. China.,National and Local United Engineering Lab of Metabolic Control Fermentation Technology, Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Qingyang Xu
- Key Laboratory of Industrial Fermentation Microbiology, Tianjin University of Science & Technology, Ministry of Education, Tianjin, P. R. China.,Tianjin Key Laboratory of Industrial Microbiology, Tianjin University of Science & Technology, Tianjin, P. R. China.,College of Biotechnology, Tianjin University of Science & Technology, Tianjin, P. R. China.,National and Local United Engineering Lab of Metabolic Control Fermentation Technology, Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Xixian Xie
- Key Laboratory of Industrial Fermentation Microbiology, Tianjin University of Science & Technology, Ministry of Education, Tianjin, P. R. China.,Tianjin Key Laboratory of Industrial Microbiology, Tianjin University of Science & Technology, Tianjin, P. R. China.,College of Biotechnology, Tianjin University of Science & Technology, Tianjin, P. R. China.,National and Local United Engineering Lab of Metabolic Control Fermentation Technology, Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Ning Chen
- Key Laboratory of Industrial Fermentation Microbiology, Tianjin University of Science & Technology, Ministry of Education, Tianjin, P. R. China.,Tianjin Key Laboratory of Industrial Microbiology, Tianjin University of Science & Technology, Tianjin, P. R. China.,College of Biotechnology, Tianjin University of Science & Technology, Tianjin, P. R. China.,National and Local United Engineering Lab of Metabolic Control Fermentation Technology, Tianjin University of Science and Technology, Tianjin, P. R. China
| |
Collapse
|
27
|
Martinez SJ, Bressani APP, Dias DR, Simão JBP, Schwan RF. Effect of Bacterial and Yeast Starters on the Formation of Volatile and Organic Acid Compounds in Coffee Beans and Selection of Flavors Markers Precursors During Wet Fermentation. Front Microbiol 2019; 10:1287. [PMID: 31293527 PMCID: PMC6606702 DOI: 10.3389/fmicb.2019.01287] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/23/2019] [Indexed: 01/09/2023] Open
Abstract
Coffee quality has recently become a high demand of coffee consumers, due to all the specialty coffees available on the market. Specialty coffees can be generated by favoring growth of some groups of microorganisms during fermentation or by using starters. Just as yeast, a variety of bacteria can be used to generate important flavor precursors. The aim of this work was to test the efficiency of coffee sterilization and adhesion of microbial cells on beans, to evaluate the effect of yeast and bacterial starters on the production of organic and volatile compounds, and selection of potential flavor marker precursors during the wet fermentation. Three yeast and six bacterial starters were inoculated in coffee beans. Coffee sterilization and microbial adhesion was observed by scanning electron microscopy (SEM). Organic compounds were detected by high performance liquid chromatography (HPLC) and volatile compounds by gas chromatography–mass spectrometry (GC–MS). Micrographs from the SEM showed that sterilization was efficient, because there were no microbial cells after autoclaving for 5 min. Also, it was observed an increase of microbial cells from 0 to 48 h of fermentation. Malic, lactic, and acetic acid were only detected in the bacterial treatments. Volatile compounds: 4-ethenyl-1,2-dimethoxybenzene, heptadecanol, 4-hydroxy-2-methylacetophenone, and 1-butanol,2-methyl were only found in yeast treatments. Guaiacol was only produced by the inoculated B. subtilis starters. In conclusion, yeast starters were better producers of volatile alcohols and bacterial starters of acid compounds. This study allowed the selection of potential flavor marker precursors, such as heptadecanol, 4-hydroxy-2-methylacetophenone, 7-methyl-4-octanol, and guaiacol.
Collapse
|
28
|
Brüsseler C, Späth A, Sokolowsky S, Marienhagen J. Alone at last! - Heterologous expression of a single gene is sufficient for establishing the five-step Weimberg pathway in Corynebacterium glutamicum. Metab Eng Commun 2019; 9:e00090. [PMID: 31016135 PMCID: PMC6475665 DOI: 10.1016/j.mec.2019.e00090] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/29/2019] [Accepted: 03/29/2019] [Indexed: 12/11/2022] Open
Abstract
Corynebacterium glutamicum can grow on d-xylose as sole carbon and energy source via the five-step Weimberg pathway when the pentacistronic xylXABCD operon from Caulobacter crescentus is heterologously expressed. More recently, it could be demonstrated that the C. glutamicum wild type accumulates the Weimberg pathway intermediate d-xylonate when cultivated in the presence of d-xylose. Reason for this is the activity of the endogenous dehydrogenase IolG, which can also oxidize d-xylose. This raised the question whether additional endogenous enzymes in C. glutamicum contribute to the catabolization of d-xylose via the Weimberg pathway. In this study, analysis of the C. glutamicum genome in combination with systematic reduction of the heterologous xylXABCD operon revealed that the hitherto unknown and endogenous dehydrogenase KsaD (Cg0535) can also oxidize α-ketoglutarate semialdehyde to the tricarboxylic acid cycle intermediate α-ketoglutarate, the final enzymatic step of the Weimberg pathway. Furthermore, heterologous expression of either xylX or xylD, encoding for the two dehydratases of the Weimberg pathway in C. crescentus, is sufficient for enabling C. glutamicum to grow on d-xylose as sole carbon and energy source. Finally, several variants for the carbon-efficient microbial production of α-ketoglutarate from d-xylose were constructed. In comparison to cultivation solely on d-glucose, the best strain accumulated up to 1.5-fold more α-ketoglutarate in d-xylose/d-glucose mixtures. C. glutamicum requires only one additional dehydratase to grow on d-xylose. XylX or XylD can be used to establish the Weimberg pathway in C. glutamicum. cg0535 (ksaD) encodes for an α-ketoglutarate semialdehyde dehydrogenase. C. glutamicum accumulates α-ketoglutarate from d-xylose via the Weimberg pathway.
Collapse
Affiliation(s)
- Christian Brüsseler
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, D-52425, Germany
| | - Anja Späth
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, D-52425, Germany
| | - Sascha Sokolowsky
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, D-52425, Germany
| | - Jan Marienhagen
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich, D-52425, Germany
| |
Collapse
|
29
|
Zhang Y, Zhang X, Xiao S, Qi W, Xu J, Yuan Z, Wang Z. Engineering Corynebacterium glutamicum Mutants for 3-Methyl-1-butanol Production. Biochem Genet 2019; 57:443-454. [PMID: 30644007 DOI: 10.1007/s10528-019-09906-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/04/2019] [Indexed: 11/30/2022]
Abstract
3-Methyl-1-butanol (3MB) is a promising biofuel that can be produced from 2-ketoisocaproate via the common L-leucine biosynthesis pathway. Corynebacterium glutamicum was chosen as a host bacterium because of its strong resistance to isobutanol. In the current study, several strategies were designed to overproduce 3MB in C. glutamicum through a non-fermentation pathway. The engineered C. glutamicum mutant was obtained by silencing the pyruvate dehydrogenase gene complex (aceE) and deleting the lactic dehydrogenase gene (ldh), followed by mutagenesis with diethyl sulfate (DES) and selection with Fmoc-3-4-thiazolyl-L-alanine (FTA). The mutant could produce 659 mg/L of 3MB after 12 h of incubation. To facilitate carbon flux to 3MB biosynthesis, the engineered recombinant was also constructed without branched-chain acid aminotransferase (ilvE) activity by deleting the ilvE gene. This recombinant could produce 697 mg/L of 3MB after 12 h of incubation.
Collapse
Affiliation(s)
- Yu Zhang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China
- CAS Key Laboratory of Renewable Energy, Guangzhou, 510640, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou, 510640, China
| | - Xiaohuan Zhang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China
- CAS Key Laboratory of Renewable Energy, Guangzhou, 510640, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou, 510640, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shiyuan Xiao
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China
- CAS Key Laboratory of Renewable Energy, Guangzhou, 510640, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou, 510640, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Qi
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China.
- CAS Key Laboratory of Renewable Energy, Guangzhou, 510640, China.
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou, 510640, China.
| | - Jingliang Xu
- School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 450001, China.
| | - Zhenhong Yuan
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China
- CAS Key Laboratory of Renewable Energy, Guangzhou, 510640, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou, 510640, China
| | - Zhongming Wang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China
- CAS Key Laboratory of Renewable Energy, Guangzhou, 510640, China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou, 510640, China
| |
Collapse
|
30
|
Bai W, Geng W, Wang S, Zhang F. Biosynthesis, regulation, and engineering of microbially produced branched biofuels. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:84. [PMID: 31011367 PMCID: PMC6461809 DOI: 10.1186/s13068-019-1424-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 04/03/2019] [Indexed: 05/13/2023]
Abstract
The steadily increasing demand on transportation fuels calls for renewable fuel replacements. This has attracted a growing amount of research to develop advanced biofuels that have similar physical, chemical, and combustion properties with petroleum-derived fossil fuels. Early generations of biofuels, such as ethanol, butanol, and straight-chain fatty acid-derived esters or hydrocarbons suffer from various undesirable properties and can only be blended in limited amounts. Recent research has shifted to the production of branched-chain biofuels that, compared to straight-chain fuels, have higher octane values, better cold flow, and lower cloud points, making them more suitable for existing engines, particularly for diesel and jet engines. This review focuses on several types of branched-chain biofuels and their immediate precursors, including branched short-chain (C4-C8) and long-chain (C15-C19)-alcohols, alkanes, and esters. We discuss their biosynthesis, regulation, and recent efforts in their overproduction by engineered microbes.
Collapse
Affiliation(s)
- Wenqin Bai
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO 63130 USA
| | - Weitao Geng
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO 63130 USA
| | - Shaojie Wang
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO 63130 USA
| | - Fuzhong Zhang
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, Saint Louis, MO 63130 USA
- Division of Biological & Biomedical Sciences, Washington University in St. Louis, Saint Louis, MO 63130 USA
- Institute of Materials Science & Engineering, Washington University in St. Louis, Saint Louis, MO 63130 USA
| |
Collapse
|
31
|
Tsuge Y, Kawaguchi H, Yamamoto S, Nishigami Y, Sota M, Ogino C, Kondo A. Metabolic engineering of Corynebacterium glutamicum for production of sunscreen shinorine. Biosci Biotechnol Biochem 2018; 82:1252-1259. [DOI: 10.1080/09168451.2018.1452602] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Abstract
Ultraviolet-absorbing chemicals are useful in cosmetics and skin care to prevent UV-induced skin damage. We demonstrate here that heterologous production of shinorine, which shows broad absorption maxima in the UV-A and UV-B region. A shinorine producing Corynebacterium glutamicum strain was constructed by expressing four genes from Actinosynnema mirum DSM 43827, which are responsible for the biosynthesis of shinorine from sedoheptulose-7-phosphate in the pentose phosphate pathway. Deletion of transaldolase encoding gene improved shinorine production by 5.2-fold. Among the other genes in pentose phosphate pathway, overexpression of 6-phosphogluconate dehydrogenase encoding gene further increased shinorine production by 60% (19.1 mg/L). The genetic engineering of the pentose phosphate pathway in C. glutamicum improved shinorine production by 8.3-fold in total, and could be applied to produce the other chemicals derived from sedoheptulose-7-phosphate.
Collapse
Affiliation(s)
- Yota Tsuge
- Graduate School of Natural Science and Technology, Kanazawa University , Kanazawa, Japan
- Institute for Frontier Science Initiative, Kanazawa University , Kanazawa, Japan
| | - Hideo Kawaguchi
- Graduate School of Science, Technology and Innovation, Kobe University , Kobe, Japan
| | | | | | | | - Chiaki Ogino
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University , Kobe, Japan
| | - Akihiko Kondo
- Graduate School of Science, Technology and Innovation, Kobe University , Kobe, Japan
| |
Collapse
|
32
|
Hirasawa T, Saito M, Yoshikawa K, Furusawa C, Shmizu H. Integrated Analysis of the Transcriptome and Metabolome of Corynebacterium glutamicum during Penicillin-Induced Glutamic Acid Production. Biotechnol J 2018; 13:e1700612. [PMID: 29323472 DOI: 10.1002/biot.201700612] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/28/2017] [Indexed: 11/10/2022]
Abstract
Corynebacterium glutamicum is known for its ability to produce glutamic acid and has been utilized for the fermentative production of various amino acids. Glutamic acid production in C. glutamicum is induced by penicillin. In this study, the transcriptome and metabolome of C. glutamicum is analyzed to understand the mechanism of penicillin-induced glutamic acid production. Transcriptomic analysis with DNA microarray revealed that expression of some glycolysis- and TCA cycle-related genes, which include those encoding the enzymes involved in conversion of glucose to 2-oxoglutaric acid, is upregulated after penicillin addition. Meanwhile, expression of some TCA cycle-related genes, encoding the enzymes for conversion of 2-oxoglutaric acid to oxaloacetic acid, and the anaplerotic reactions decreased. In addition, expression of NCgl1221 and odhI, encoding proteins involved in glutamic acid excretion and inhibition of the 2-oxoglutarate dehydrogenase, respectively, is upregulated. Functional category enrichment analysis of genes upregulated and downregulated after penicillin addition revealed that genes for signal transduction systems are enriched among upregulated genes, whereas those for energy production and carbohydrate and amino acid metabolisms are enriched among the downregulated genes. As for the metabolomic analysis using capillary electrophoresis time-of-flight mass spectrometry, the intracellular content of most metabolites of the glycolysis and the TCA cycle decreased dramatically after penicillin addition. Overall, these results indicate that the cellular metabolism and glutamic acid excretion are mainly optimized at the transcription level during penicillin-induced glutamic acid production by C. glutamicum.
Collapse
Affiliation(s)
- Takashi Hirasawa
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Masaki Saito
- Department of Bioinformatic Engineering, Graduate School of Information Science and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Katsunori Yoshikawa
- Department of Bioinformatic Engineering, Graduate School of Information Science and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Chikara Furusawa
- Quantitative Biology Center, RIKEN, Suita, Osaka 565-0874, Japan.,Universal Biology Institute, The University of Tokyo, Tokyo 113-0033, Japan
| | - Hiroshi Shmizu
- Department of Bioinformatic Engineering, Graduate School of Information Science and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka 565-0871, Japan
| |
Collapse
|
33
|
Brüsseler C, Radek A, Tenhaef N, Krumbach K, Noack S, Marienhagen J. The myo-inositol/proton symporter IolT1 contributes to d-xylose uptake in Corynebacterium glutamicum. BIORESOURCE TECHNOLOGY 2018; 249:953-961. [PMID: 29145122 DOI: 10.1016/j.biortech.2017.10.098] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 05/22/2023]
Abstract
Corynebacterium glutamicum has been engineered to utilize d-xylose as sole carbon and energy source. Recently, a C. glutamicum strain has been optimized for growth on defined medium containing d-xylose by laboratory evolution, but the mutation(s) attributing to the improved-growth phenotype could not be reliably identified. This study shows that loss of the transcriptional repressor IolR is responsible for the increased growth performance on defined d-xylose medium in one of the isolated mutants. Underlying reason is derepression of the gene for the glucose/myo-inositol permease IolT1 in the absence of IolR, which could be shown to also contribute to d-xylose uptake in C. glutamicum. IolR-regulation of iolT1 could be successfully repealed by rational engineering of an IolR-binding site in the iolT1-promoter. This minimally engineered C. glutamicum strain bearing only two nucleotide substitutions mimics the IolR loss-of-function phenotype and allows for a high growth rate on d-xylose-containing media (µmax = 0.24 ± 0.01 h-1).
Collapse
Affiliation(s)
- Christian Brüsseler
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich D-52425, Germany
| | - Andreas Radek
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich D-52425, Germany
| | - Niklas Tenhaef
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich D-52425, Germany
| | - Karin Krumbach
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich D-52425, Germany
| | - Stephan Noack
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich D-52425, Germany
| | - Jan Marienhagen
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, Jülich D-52425, Germany.
| |
Collapse
|
34
|
Zhu M, Wang C, Sun W, Zhou A, Wang Y, Zhang G, Zhou X, Huo Y, Li C. Boosting 11-oxo-β-amyrin and glycyrrhetinic acid synthesis in Saccharomyces cerevisiae via pairing novel oxidation and reduction system from legume plants. Metab Eng 2017; 45:43-50. [PMID: 29196123 DOI: 10.1016/j.ymben.2017.11.009] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 11/08/2017] [Accepted: 11/18/2017] [Indexed: 01/20/2023]
Abstract
Glycyrrhetinic acid (GA) and its precursor, 11-oxo-β-amyrin, are typical triterpenoids found in the roots of licorice, a traditional Chinese medicinal herb that exhibits diverse functions and physiological effects. In this study, we developed a novel and highly efficient pathway for the synthesis of GA and 11-oxo-β-amyrin in Saccharomyces cerevisiae by introducing efficient cytochrome P450s (CYP450s: Uni25647 and CYP72A63) and pairing their reduction systems from legume plants through transcriptome and genome-wide screening and identification. By increasing the copy number of Uni25647 and pairing cytochrome P450 reductases (CPRs) from various plant sources, the titers of 11-oxo-β-amyrin and GA were increased to 108.1 ± 4.6mg/L and 18.9 ± 2.0mg/L, which were nearly 1422-fold and 946.5-fold higher, respectively, compared with previously reported data. To the best of our knowledge, these are the highest titers reported for GA and 11-oxo-β-amyrin from S. cerevisiae, indicating an encouraging and promising approach for obtaining increased GA and its related triterpenoids without destroying the licorice plant or the soil ecosystem.
Collapse
Affiliation(s)
- Ming Zhu
- Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Caixia Wang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Wentao Sun
- Institute for Biotransformation and Synthetic Biosystem/Department of Biological Engineering, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Anqi Zhou
- Institute for Biotransformation and Synthetic Biosystem/Department of Biological Engineering, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Ying Wang
- Institute for Biotransformation and Synthetic Biosystem/Department of Biological Engineering, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Genlin Zhang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Xiaohong Zhou
- Institute for Biotransformation and Synthetic Biosystem/Department of Biological Engineering, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Yixin Huo
- Institute for Biotransformation and Synthetic Biosystem/Department of Biological Engineering, School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Chun Li
- Institute for Biotransformation and Synthetic Biosystem/Department of Biological Engineering, School of Life Science, Beijing Institute of Technology, Beijing 100081, China.
| |
Collapse
|
35
|
Retooling microorganisms for the fermentative production of alcohols. Curr Opin Biotechnol 2017; 50:1-10. [PMID: 28888164 DOI: 10.1016/j.copbio.2017.08.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 08/14/2017] [Accepted: 08/16/2017] [Indexed: 12/31/2022]
Abstract
Bioengineering and synthetic biology approaches have revolutionised the field of biotechnology, enabling the introduction of non-native and de novo pathways for biofuels production. This 'retooling' of microorganisms is also applied to the utilisation of mixed carbon components derived from lignocellulosic biomass, a major technical barrier for the development of economically viable fermentations. This review will discuss recent advances in microorganism engineering for efficient production of alcohols from waste biomass. These advances span the introduction of new pathways to alcohols, host modifications for more cost-effective utilisation of lignocellulosic waste and modifications of existing pathways for generating new fuel additives.
Collapse
|
36
|
Wang C, Pfleger BF, Kim SW. Reassessing Escherichia coli as a cell factory for biofuel production. Curr Opin Biotechnol 2017; 45:92-103. [DOI: 10.1016/j.copbio.2017.02.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 02/05/2017] [Accepted: 02/09/2017] [Indexed: 11/29/2022]
|