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Li M, Zhang Y, Li J, Tan T. Biosynthesis of 1,3-Propanediol via a New Pathway from Glucose in Escherichia coli. ACS Synth Biol 2023. [PMID: 37316976 DOI: 10.1021/acssynbio.3c00122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
1,3-Propanediol (1,3-PDO), an important dihydric alcohol, is widely used in textiles, resins, and pharmaceuticals. More importantly, it can be used as a monomer in the synthesis of polytrimethylene terephthalate (PTT). In this study, a new biosynthetic pathway is proposed to produce 1,3-PDO using glucose as a substrate and l-aspartate as a precursor without the addition of expensive vitamin B12. We introduced a 3-HP synthesis module derived from l-aspartate and a 1,3-PDO synthesis module to achieve the de novo biosynthesis. The following strategies were then pursued that included screening key enzymes, optimizing the transcription and translation levels, enhancing the precursor supply of l-aspartate and oxaloacetate, weakening the tricarboxylic acid (TCA) cycle, and blocking competitive pathways. We also used transcriptomic methods to analyze the different gene expression levels. Finally, an engineered Escherichia coli strain produced 6.41 g/L 1,3-PDO with a yield of 0.51 mol/mol glucose in a shake flask and 11.21 g/L in fed-batch fermentation. This study provides a new pathway for production of 1,3-PDO.
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Affiliation(s)
- Mingda Li
- Beijing Key Laboratory of Bioprocess, National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology. 15th, Beisanhuan East Road, Beijing 100029, People's Republic of China
| | - Yang Zhang
- Beijing Key Laboratory of Bioprocess, National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology. 15th, Beisanhuan East Road, Beijing 100029, People's Republic of China
| | - Jingchuan Li
- Beijing Key Laboratory of Bioprocess, National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology. 15th, Beisanhuan East Road, Beijing 100029, People's Republic of China
| | - Tianwei Tan
- Beijing Key Laboratory of Bioprocess, National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology. 15th, Beisanhuan East Road, Beijing 100029, People's Republic of China
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Agmatine production by Escherichia coli cells expressing SpeA on the extracellular surface. Enzyme Microb Technol 2023; 162:110139. [DOI: 10.1016/j.enzmictec.2022.110139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 09/23/2022] [Accepted: 10/06/2022] [Indexed: 11/13/2022]
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Liang X, Deng H, Xiong T, Bai Y, Fan TP, Zheng X, Cai Y. Overexpression and biochemical characterization of a carboxyspermidine dehydrogenase from Agrobacterium fabrum str. C58 and its application to carboxyspermidine production. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:3858-3868. [PMID: 34932223 DOI: 10.1002/jsfa.11735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/18/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Carboxyspermidine (C-Spd) is a potentially valuable polyamine carboxylate compound and an excellent building block for spermidine synthesis, which is a critical polyamine with significant implications for human health and longevity. C-Spd can also be used to prepare multivalent cationic lipids and modify nucleoside probes. Because of these positive effects on human health, C-Spd is of considerable interest as a food additive and pharmaceutical target. RESULTS A putative gene afcasdh from Agrobacterium fabrum str. C58, encoding carboxyspermidine dehydrogenase with C-Spd biosynthesis activity, was synthesized and transformed into Escherichia coli BL21 (DE3) for overexpression. The recombinant AfCASDH was purified and fully characterized. The optimum temperature and pH for the recombinant enzyme were 30 °C and 7.5, respectively. The coupled catalytic strategy of AfCASDH and various NADPH regeneration systems were developed to enhance the efficient production of C-Spd compound. Finally, the maximum titer of C-Spd production successfully achieved 1.82 mmol L-1 with a yield of 91% by optimizing the catalytic conditions. CONCLUSION A novel AfCASDH from A. fabrum str. C58 was characterized that could catalyze the formation of C-Spd from putrescine and l-aspartate-β-semialdehyde (L-Asa). A whole-cell catalytic strategy coupled with NADPH regeneration was established successfully for C-Spd biosynthesis for the first time. The coupled system indicated that AfCASDH might provide a feasible method for the industrial production of C-Spd. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Xinxin Liang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Huaxiang Deng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Tianzhen Xiong
- College of Life Sciences, Xinyang Normal University, Xinyang, China
| | - Yajun Bai
- College of Life Sciences, Northwest University, Xi'an, China
| | - Tai-Ping Fan
- Department of Pharmacology, University of Cambridge, Cambridge, UK
| | - Xiaohui Zheng
- College of Life Sciences, Northwest University, Xi'an, China
| | - Yujie Cai
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
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Yang F, Xu J, Zhu Y, Wang Y, Xu M, Rao Z. High-level production of the agmatine in engineered Corynebacterium crenatum with the inhibition-releasing arginine decarboxylase. Microb Cell Fact 2022; 21:16. [PMID: 35101042 PMCID: PMC8805389 DOI: 10.1186/s12934-022-01742-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/12/2022] [Indexed: 01/11/2023] Open
Abstract
Abstract
Background
Agmatine is a member of biogenic amines and is an important medicine which is widely used to regulate body balance and neuroprotective effects. At present, the industrial production of agmatine mainly depends on the chemical method, but it is often accompanied by problems including cumbersome processes, harsh reaction conditions, toxic substances production and heavy environmental pollution. Therefore, to tackle the above issues, arginine decarboxylase was overexpressed heterologously and rationally designed in Corynebacterium crenatum to produce agmatine from glucose by one-step fermentation.
Results
In this study, we report the development in the Generally Regarded as Safe (GRAS) l-arginine-overproducing C. crenatum for high-titer agmatine biosynthesis through overexpressing arginine decarboxylase based on metabolic engineering. Then, arginine decarboxylase was mutated to release feedback inhibition and improve catalytic activity. Subsequently, the specific enzyme activity and half-inhibitory concentration of I534D mutant were increased 35.7% and 48.1%, respectively. The agmatine production of the whole-cell bioconversion with AGM3 was increased by 19.3% than the AGM2. Finally, 45.26 g/L agmatine with the yield of 0.31 g/g glucose was achieved by one-step fermentation of the engineered C. crenatum with overexpression of speAI534D.
Conclusions
The engineered C. crenatum strain AGM3 in this work was proved as an efficient microbial cell factory for the industrial fermentative production of agmatine. Based on the insights from this work, further producing other valuable biochemicals derived from l-arginine by Corynebacterium crenatum is feasible.
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Thongbhubate K, Irie K, Sakai Y, Itoh A, Suzuki H. Improvement of putrescine production through the arginine decarboxylase pathway in Escherichia coli K-12. AMB Express 2021; 11:168. [PMID: 34910273 PMCID: PMC8674398 DOI: 10.1186/s13568-021-01330-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 12/04/2021] [Indexed: 12/03/2022] Open
Abstract
In the bio-based polymer industry, putrescine is in the spotlight for use as a material. We constructed strains of Escherichia coli to assess its putrescine production capabilities through the arginine decarboxylase pathway in batch fermentation. N-Acetylglutamate (ArgA) synthase is subjected to feedback inhibition by arginine. Therefore, the 19th amino acid residue, Tyr, of argA was substituted with Cys to desensitize the feedback inhibition of arginine, resulting in improved putrescine production. The inefficient initiation codon GTG of argA was substituted with the effective ATG codon, but its replacement did not affect putrescine production. The essential genes for the putrescine production pathway, speA and speB, were cloned into the same plasmid with argAATG Y19C to form an operon. These genes were introduced under different promoters; lacIp, lacIqp, lacIq1p, and T5p. Among these, the T5 promoter demonstrated the best putrescine production. In addition, disruption of the puuA gene encoding enzyme of the first step of putrescine degradation pathway increased the putrescine production. Of note, putrescine production was not affected by the disruption of patA, which encodes putrescine aminotransferase, the initial enzyme of another putrescine utilization pathway. We also report that the strain KT160, which has a genomic mutation of YifEQ100TAG, had the greatest putrescine production. At 48 h of batch fermentation, strain KT160 grown in terrific broth with 0.01 mM IPTG produced 19.8 mM of putrescine.
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Zhang X, Wu Q, Zhang X, Lv Z, Mo X, Li Y, Chen XA. Elevation of FK506 production by regulatory pathway engineering and medium optimization in Streptomyces tsukubaensis. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xu D, Zhang L. Pathway Engineering for Phenethylamine Production in Escherichia coli. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:5917-5926. [PMID: 32367713 DOI: 10.1021/acs.jafc.0c01706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, the metabolic pathway of phenethylamine synthesis was reconstructed by chromosomal integration and overexpression of the Enterococcus faecium pdc gene encoding phenylalanine decarboxylase in Escherichia coli. The genes encoding 3-deoxy-d-arabinoheptulosonate-7-phosphate synthase (aroG), shikimate kinase II (aroL), chorismate mutase/prephenate dehydratase (pheA), and tyrosine aminotransferase (tyrB) in the phenethylamine synthetic pathway were sequentially chromosomally overexpressed. The phosphotransferase system was replaced by deleting the ptsH-ptsI-crr genes and chromosomally overexpressing the genes encoding galactose permease (galP) and glucokinase (glk). In addition, the zwf gene encoding glucose-6-phosphate dehydrogenase in the pentose phosphate pathway was chromosomally overexpressed, generating the final engineered E. coli strain AUD9. The AUD9 strain produced 2.65 g L-1 phenethylamine with a yield of 0.27 g of phenethylamine g-1 glucose in batch fermentation; fed-batch fermentation of AUD9 produced 38.82 g L-1 phenethylamine with a productivity of 1.08 g L-1 h-1 phenethylamine, demonstrating its potential for industrial fermentative production of phenethylamine.
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Affiliation(s)
- Daqing Xu
- College of Life Sciences, Hebei Agricultural University, Baoding 071000, China
| | - Lirong Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
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Satowa D, Fujiwara R, Uchio S, Nakano M, Otomo C, Hirata Y, Matsumoto T, Noda S, Tanaka T, Kondo A. Metabolic engineering of E. coli for improving mevalonate production to promote NADPH regeneration and enhance acetyl-CoA supply. Biotechnol Bioeng 2020; 117:2153-2164. [PMID: 32255505 DOI: 10.1002/bit.27350] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/17/2020] [Accepted: 04/05/2020] [Indexed: 12/17/2022]
Abstract
Microbial production of mevalonate from renewable feedstock is a promising and sustainable approach for the production of value-added chemicals. We describe the metabolic engineering of Escherichia coli to enhance mevalonate production from glucose and cellobiose. First, the mevalonate-producing pathway was introduced into E. coli and the expression of the gene atoB, which encodes the gene for acetoacetyl-CoA synthetase, was increased. Then, the deletion of the pgi gene, which encodes phosphoglucose isomerase, increased the NADPH/NADP+ ratio in the cells but did not improve mevalonate production. Alternatively, to reduce flux toward the tricarboxylic acid cycle, gltA, which encodes citrate synthetase, was disrupted. The resultant strain, MGΔgltA-MV, increased levels of intracellular acetyl-CoA up to sevenfold higher than the wild-type strain. This strain produced 8.0 g/L of mevalonate from 20 g/L of glucose. We also engineered the sugar supply by displaying β-glucosidase (BGL) on the cell surface. When cellobiose was used as carbon source, the strain lacking gnd displaying BGL efficiently consumed cellobiose and produced mevalonate at 5.7 g/L. The yield of mevalonate was 0.25 g/g glucose (1 g of cellobiose corresponds to 1.1 g of glucose). These results demonstrate the feasibility of producing mevalonate from cellobiose or cellooligosaccharides using an engineered E. coli strain.
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Affiliation(s)
- Daichi Satowa
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Ryosuke Fujiwara
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Shogo Uchio
- 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
| | - Chisako Otomo
- 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
| | - Takuya Matsumoto
- Department of Chemical Engineering, Osaka Prefecture University, Osaka, Japan
| | - Shuhei Noda
- Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan
| | - Tsutomu Tanaka
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Akihiko Kondo
- Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan.,Graduate School of Science, Technology and Innovation, Kobe University, Kobe, Japan
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