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Liu K, Liu Y, Li X, Zhang X, Xue Z, Zhao M. Efficient production of α-ketoglutaric acid using an economical double-strain cultivation and catalysis system. Appl Microbiol Biotechnol 2023; 107:6497-6506. [PMID: 37682299 DOI: 10.1007/s00253-023-12757-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 08/03/2023] [Accepted: 08/30/2023] [Indexed: 09/09/2023]
Abstract
The whole-cell catalysis strategy of alpha-ketoglutaric acid (α-KG) production from L-glutamic acid (L-Glu) using recombinant Escherichia coli, in which L-glutamate oxidase (LGox) was over-expressed, has replaced the traditional chemical synthesis strategy. However, large amounts of toxic by-product, H2O2, should be eliminated through co-expressing catalase (Cat), thus severely increasing burden in cells. To efficiently and economically produce α-KG, here, the genes SpLGox (from Streptomyces platensis NTU3304) and SlCat (from Streptomyces lividans TK24) were inserted into the low-dosage-IPTG (Isopropyl β-D-Thiogalactoside) inducible expression system, constructed in our previous work, in E. coli, respectively. Besides, a double-strain catalysis system was established and optimized to produce α-KG, and the productivity of α-KG was increased 97% compared with that through single strain catalysis. Finally, a double-strain cultivation strategy was designed and employed to simplify the scale-up fermentation. Using the optimized whole-cell biocatalyst conditions (pH 7.0, 35 °C), majority of the L-glutamic acid was transformed into α-KG and the titer reached 95.4 g/L after 6 h with the highest productivity at present. Therefore, this strategy may efficiently and cost-effectively produce α-KG, enhancing its potential for industrial applications. KEY POINTS: • SpLGox and SlCat were over-expressed to catalyze L-Glu to α-KG and eliminate by-product H2O2, respectively. • Double-strain cultivation and catalysis system can efficiently and cost-effectively produce α-KG from L-Glu.
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Affiliation(s)
- Kun Liu
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, College of Biology and Food Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Yan Liu
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, College of Biology and Food Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Xiangfei Li
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, College of Biology and Food Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Xiushan Zhang
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, College of Biology and Food Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Zhenglian Xue
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, College of Biology and Food Engineering, Anhui Polytechnic University, Wuhu, 241000, China.
| | - Ming Zhao
- Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, College of Biology and Food Engineering, Anhui Polytechnic University, Wuhu, 241000, China.
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Yin BB, Gao NN, Xu AR, Liang J, Wang LJ, Wang Y. High Emission Zinc Metal‐Organic Framework for Sensitive and Selective Detection of Fe
3+
, Cr
6+
and Nitrofurazone Antibiotic. ChemistrySelect 2022. [DOI: 10.1002/slct.202202812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bei B. Yin
- Anhui Key Laboratory of Functional Coordination Compounds School of Chemistry and Chemical Engineering Anqing Normal University Anqing 246011 China
| | - Ning N. Gao
- Anhui Key Laboratory of Functional Coordination Compounds School of Chemistry and Chemical Engineering Anqing Normal University Anqing 246011 China
| | - An R. Xu
- Anhui Key Laboratory of Functional Coordination Compounds School of Chemistry and Chemical Engineering Anqing Normal University Anqing 246011 China
| | - Jing Liang
- Anhui Key Laboratory of Functional Coordination Compounds School of Chemistry and Chemical Engineering Anqing Normal University Anqing 246011 China
| | - Li J. Wang
- Anhui Key Laboratory of Functional Coordination Compounds School of Chemistry and Chemical Engineering Anqing Normal University Anqing 246011 China
| | - Yan Wang
- Anhui Key Laboratory of Functional Coordination Compounds School of Chemistry and Chemical Engineering Anqing Normal University Anqing 246011 China
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Das A, Ghosh S, Bourda L, SK M, Banerjee K, Van Hecke K, Biswas S. A Cd( ii)-organic framework as a highly sensitive and rapid fluorometric sensor for ascorbic acid in aqueous medium. CrystEngComm 2022. [DOI: 10.1039/d2ce00654e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A new Cd(ii) MOF was used as a fluorometric sensor for ascorbic acid in water, fruits, vegetables and human urine.
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Affiliation(s)
- Aniruddha Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039 Assam, India
| | - Subhrajyoti Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039 Assam, India
| | - Laurens Bourda
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281, Building S3, 9000 Ghent, Belgium
| | - Mostakim SK
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039 Assam, India
| | - Kaustuv Banerjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039 Assam, India
| | - Kristof Van Hecke
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281, Building S3, 9000 Ghent, Belgium
| | - Shyam Biswas
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039 Assam, India
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Ji W, Tang X, Du W, Lu Y, Wang N, Wu Q, Wei W, Liu J, Yu H, Ma B, Li L, Huang W. Optical/electrochemical methods for detecting mitochondrial energy metabolism. Chem Soc Rev 2021; 51:71-127. [PMID: 34792041 DOI: 10.1039/d0cs01610a] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This review highlights the biological importance of mitochondrial energy metabolism and the applications of multiple optical/electrochemical approaches to determine energy metabolites. Mitochondria, the main sites of oxidative phosphorylation and adenosine triphosphate (ATP) biosynthesis, provide the majority of energy required by aerobic cells for maintaining their physiological activity. They also participate in cell growth, differentiation, information transmission, and apoptosis. Multiple mitochondrial diseases, caused by internal or external factors, including oxidative stress, intense fluctuations of the ionic concentration, abnormal oxidative phosphorylation, changes in electron transport chain complex enzymes and mutations in mitochondrial DNA, can occur during mitochondrial energy metabolism. Therefore, developing accurate, sensitive, and specific methods for the in vivo and in vitro detection of mitochondrial energy metabolites is of great importance. In this review, we summarise the mitochondrial structure, functions, and crucial energy metabolic signalling pathways. The mechanism and applications of different optical/electrochemical methods are thoroughly reviewed. Finally, future research directions and challenges are proposed.
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Affiliation(s)
- Wenhui Ji
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Xiao Tang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Wei Du
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Yao Lu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Nanxiang Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Qiong Wu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Wei Wei
- Department of General Surgery, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, China
| | - Jie Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
| | - Haidong Yu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Bo Ma
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211800, China
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China. .,Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.,The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China. .,Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.,The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China
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