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Liu Y, Gong JS, Marshall G, Su C, Hall M, Li H, Xu GQ, Shi JS, Xu ZH. Protein engineering of NADH pyrophosphatase for efficient biocatalytic production of reduced nicotinamide mononucleotide. Front Bioeng Biotechnol 2023; 11:1159965. [PMID: 37082214 PMCID: PMC10110983 DOI: 10.3389/fbioe.2023.1159965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 03/24/2023] [Indexed: 04/22/2023] Open
Abstract
Introduction: NADH pyrophosphatase, a hydrolase catalyzing the phosphate bond of NADH to reduced nicotinamide mononucleotide, has potential applications in the food, cosmetic and pharmaceutical industry. Methods: Here, we investigated the effects of vector screening, promoter and RBS strategies on NADH pyrophosphatase expression and protein engineering on its enzymatic activity and thermal stability. Results: In this study, we describe a NADH pyrophosphatase derived from Escherichia coli (EcNudc). Strategies focusing on expression regulation including screening vectors, optimizing promoters and ribosome binding sites were utilized to enhance the productivity of EcNudc (1.8 U/mL). Moreover, protein engineering was adopted to further improve the catalytic properties of EcNudc, achieving 3.3-fold higher activity and 3.6-fold greater thermostability at 50°C. Furthermore, fermentation for the combined mutant R148A-H149E (EcNudc-M) production in a 7 L fermenter was implemented and the enzyme activity of EcNudc-M reached 33.0 U/mL. Finally, the EcNudc-M was applied in the catalysis of NADH with the highest NMNH yield of 16.65 g/L. Discussion: In conclusion, we constructed a commercially available genetically engineered strain with high activity and thermal stability of NADH pyrophosphatase, laying a broad foundation for the biocatalytic industrial production of NMNH and expand its application range.
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Affiliation(s)
- Ye Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, China
- *Correspondence: Jin-Song Gong,
| | | | - Chang Su
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, China
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Michael Hall
- Seragon Biosciences, Inc., Irvine, CA, United States
| | - Heng Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, China
| | - Guo-Qiang Xu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, China
| | - Zheng-Hong Xu
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, China
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, China
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Lu J, Zhang J. Extracellular expression of Aerococcus viridans pyruvate oxidase in recombinant Escherichia coli through SecB co-expression. RSC Adv 2019; 9:26291-26301. [PMID: 35531014 PMCID: PMC9070445 DOI: 10.1039/c9ra04765d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 08/15/2019] [Indexed: 11/21/2022] Open
Abstract
Pyruvate oxidase (POD) is an important enzyme used for clinical applications and biochemical analyses, and recombinant Escherichia coli strains expressing Aerococcus viridans POD have been frequently employed for obtaining high POD yield. Although significant progress has been achieved in increasing recombinant POD production, intracellular POD expression and weak stability of POD make POD purification difficult. In this study, extracellular POD expression was achieved by co-expression of chaperone SecB under three promoters (T7, lac, bla). The weakest promoter, bla, when compared with T7 and lac promoters, provided the optimum extracellular POD activity among these three promoters. After optimization of cultivation conditions, such as IPTG concentration, pH, and temperature, the extracellular POD yield increased to 795.7 U L-1. Furthermore, by using glycine to disrupt recombinant E. coli cell wall and Cu2+ ions as POD stabilizer, the final extracellular POD yield reached 2926.3 U L-1. The expression intensity of chaperone had significant influence on heterologous protein secretion, and the high yield of extracellular POD implies potential widespread POD production and application.
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Affiliation(s)
- Junwen Lu
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology 516 Jungong Road Shanghai 200093 China +86-21-55271117 +86-21-55803272
| | - Jianguo Zhang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology 516 Jungong Road Shanghai 200093 China +86-21-55271117 +86-21-55803272
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Zheng J, Yang T, Zhou J, Xu M, Zhang X, Rao Z, Yang S. Efficient production of d-amino acid oxidase in Escherichia coli by a trade-off between its expression and biomass using N-terminal modification. BIORESOURCE TECHNOLOGY 2017; 243:716-723. [PMID: 28711799 DOI: 10.1016/j.biortech.2017.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 07/01/2017] [Accepted: 07/03/2017] [Indexed: 06/07/2023]
Abstract
Native d-amino acid oxidase (DAAO) that is expressed mostly as inclusion body and its toxicity for E. coli hamper efficient heterologous expression. In this study, the soluble expression of DAAO from Rhodosporidium toruloides (RtDAAO) was improved in E. coli through N-terminal modification, but the cell biomass was decreased. Then a trade-off between DAAO expression and biomass was achieved to obtain the highest volumetric activity of DAAO through regulated the number of N-terminus histidine residues. When variant 2H3G was fused with three N-terminus histidine residues, the volumetric activity was increased by 3.1 times and the biomass was not significant change compared with the wild type. Finally, the N-terminus disordered region of RtDAAO (HSQK) was replaced with HHHG and the variant enzyme activity reached 80.7U/mL (with a 40 percent of inactive DAAO reduced) in a 7.5L fermenter in 24h.
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Affiliation(s)
- Junxian Zheng
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Taowei Yang
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Junping Zhou
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Meijuan Xu
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Xian Zhang
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Zhiming Rao
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.
| | - Shangtian Yang
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, USA
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Tirgir F, Sabzalian MR, Moghadam G. Fabrication and DFT structure calculations of novel biodegredable diphenolic monomer containing D-4-hydroxyphenylglycine moiety as biologically active substituent: compression with toxic industrial bisphenol-A. Des Monomers Polym 2015. [DOI: 10.1080/15685551.2015.1012619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- Farhang Tirgir
- Faculty of Science, Department of Chemistry, Islamic Azad University, Shahrekord Branch, Shahrekord, Iran
- Young Researchers and Elits Club, Islamic Azad University, Shahrekord Branch, Shahrekord, Iran
| | - Mohammad R. Sabzalian
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, I.R. Iran
| | - Ghasem Moghadam
- Young Researchers and Elits Club, Islamic Azad University, Shahrekord Branch, Shahrekord, Iran
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Takahashi S, Furukawara M, Omae K, Tadokoro N, Saito Y, Abe K, Kera Y. A Highly Stable D-Amino Acid Oxidase of the Thermophilic Bacterium Rubrobacter xylanophilus. Appl Environ Microbiol 2014; 80:7219-29. [PMID: 25217016 PMCID: PMC4249180 DOI: 10.1128/aem.02193-14] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 09/09/2014] [Indexed: 01/31/2023] Open
Abstract
d-Amino acid oxidase (DAO) is a biotechnologically attractive enzyme that can be used in a variety of applications, but its utility is limited by its relatively poor stability. A search of a bacterial genome database revealed a gene encoding a protein homologous to DAO in the thermophilic bacterium Rubrobacter xylanophilus (RxDAO). The recombinant protein expressed in Escherichia coli was a monomeric protein containing noncovalently bound flavin adenine dinucleotide as a cofactor. This protein exhibited oxidase activity against neutral and basic d-amino acids and was significantly inhibited by a DAO inhibitor, benzoate, but not by any of the tested d-aspartate oxidase (DDO) inhibitors, thus indicating that the protein is DAO. RxDAO exhibited higher activities and affinities toward branched-chain d-amino acids, with the highest specific activity toward d-valine and catalytic efficiency (kcat/Km) toward d-leucine. Substrate inhibition was observed in the case of d-tyrosine. The enzyme had an optimum pH range and temperature of pH 7.5 to 10 and 65°C, respectively, and was stable between pH 5.0 and pH 8.0, with a T50 (the temperature at which 50% of the initial enzymatic activity is lost) of 64°C. No loss of enzyme activity was observed after a 1-week incubation period at 30°C. This enzyme was markedly inactivated by phenylmethylsulfonyl fluoride but not by thiol-modifying reagents and diethyl pyrocarbonate, which are known to inhibit certain DAOs. These results demonstrated that RxDAO is a highly stable DAO and suggested that this enzyme may be valuable for practical applications, such as the determination and quantification of branched-chain d-amino acids, and as a scaffold to generate a novel DAO via protein engineering.
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Affiliation(s)
- Shouji Takahashi
- Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata, Japan
| | - Makoto Furukawara
- Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata, Japan
| | - Keishi Omae
- Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata, Japan
| | - Namiho Tadokoro
- Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata, Japan
| | - Yayoi Saito
- Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata, Japan
| | - Katsumasa Abe
- Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata, Japan
| | - Yoshio Kera
- Department of Environmental Systems Engineering, Nagaoka University of Technology, Nagaoka, Niigata, Japan
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Engineering cells to improve protein expression. Curr Opin Struct Biol 2014; 26:32-8. [PMID: 24704806 DOI: 10.1016/j.sbi.2014.03.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 02/24/2014] [Accepted: 03/10/2014] [Indexed: 12/22/2022]
Abstract
Cellular engineering of bacteria, fungi, insect cells and mammalian cells is a promising methodology to improve recombinant protein production for structural, biochemical, and commercial applications. Increased understanding of the host organism biology has suggested engineering strategies targeting bottlenecks in transcription, translation, protein processing and secretory pathways, as well as cell growth and survival. A combination of metabolic engineering and synthetic biology has been used to improve the properties of cells for protein production, which has resulted in enhanced yields of multiple protein classes.
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High-level soluble and functional expression of Trigonopsis variabilis D-amino acid oxidase in Escherichia coli. Bioprocess Biosyst Eng 2014; 37:1517-26. [PMID: 24425540 DOI: 10.1007/s00449-013-1123-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 12/30/2013] [Indexed: 10/25/2022]
Abstract
D-Amino acid oxidase is an important biocatalyst used in a variety of fields, and its economically justified level recombinant expression in Escherichia coli has not been established. To accomplish this, after a single Phe54Tyr substitution, fusion proteins of D-amino acid oxidase from Trigonopsis variabilis (TvDAO) with 6 × His-tags were constructed and expressed in E. coli. The effects of his-tags fusing position were revealed. Significant increase in holoenzyme percent and protein solubility made N-terminus tagged TvDAO (termed NHDAO) a suitable choice for TvDAO production. However, reduced cell growth and protein production rates were also observed for the NHDAO bearing strains. To optimize the performance of NHDAO production, changes of culture medium were tested. Finally, a production of 140 U/mL or 3.48 g active enzyme per liter which accounted for 41.4 % of the total protein, and a specific activity of 16.68 U/mg for the crude extract, were achieved in a 3.7 L fermenter in 28.5 h. This indicated a possibility for functional and economical TvDAO expression in E. coli to meet the industrial need.
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