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Chen H, Liu R, Cai S, Zhang Y, Zhu C, Yu H, Li S. Intermediate product control in cascade reaction for one-pot production of ε-caprolactone by Escherichia coli. Biotechnol J 2024; 19:e2300210. [PMID: 38403458 DOI: 10.1002/biot.202300210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 12/11/2023] [Accepted: 12/25/2023] [Indexed: 02/27/2024]
Abstract
ε-Caprolactone is an important non-toxic compound for polymer synthesis like polycaprolactone which has been widely used in drug delivery and degradable plastics. To meet the demand for a green economy, a bi-enzymatic cascade, consisting of an alcohol dehydrogenase (ADH) and a cyclohexanone monooxygenase (CHMO), was designed and introduced into Escherichia coli to synthesize ε-caprolactone from cyclohexanol with a self-sufficient NADPH-cofactor regeneration system. To further improve the catalytic efficiency, a carbonyl group-dependent colorimetric method using inexpensive 2,4-dinitrophenylhydrazine (DNPH) was developed for assay of cyclohexanone, an intermediate production of cascade reaction. It can be used to screen mutant strains with high catalytic efficiency from high-throughput library by detecting the absorbance value in microtiter plates (MTP) instead of gas chromatography (GC) analysis. Moreover, an RBS combinatorial library was constructed for balancing the expression of ADH and CHMO from two independent transcriptional units. After the high-throughput screening based on intermediate product control, an optimal variant with higher substrate tolerance and long-term stability was obtained from RBS combinatorial library. Through a fed-batch process, ε-caprolactone production reached 148.2 mM after 70 h of reaction under the optimized conditions, which was the highest yield achieved to date.
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Affiliation(s)
- Hefeng Chen
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Ran Liu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Shengliang Cai
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Yingjiao Zhang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Chaoyi Zhu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Hao Yu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China
| | - Shuang Li
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
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Yue X, Li Y, Yang L, Sang D, Huang Z, Chen F. Sustainable asymmetric synthesis of diltiazem precursor enabled by recombinant Escherichia coli whole cells co-expressing an engineered ketoreductase and glucose dehydrogenase. Biotechnol J 2024; 19:e2300250. [PMID: 38048389 DOI: 10.1002/biot.202300250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 11/20/2023] [Accepted: 11/29/2023] [Indexed: 12/06/2023]
Abstract
As a key synthetic intermediate of the cardiovascular drug diltiazem, methyl (2R,3S)-3-(4-methoxyphenyl) glycidate ((2R,3S)-MPGM) (1) is accessible via the ring closure of chlorohydrin (3S)-methyl 2-chloro-3-hydroxy-3-(4-methoxyphenyl)propanoate ((3S)-2). We report the efficient reduction of methyl 2-chloro-3-(4-methoxyphenyl)-3-oxo-propanoate (3) to (3S)-2 using an engineered enzyme SSCRM2 possessing 4.5-fold improved specific activity, which was obtained through the structure-guided site-saturation mutagenesis of the ketoreductase SSCR by reliving steric hindrance and undesired interactions. With the combined use of the co-expression fine-tuning strategy, a recombinant E. coli (pET28a-RBS-SSCRM2 /pACYCDuet-GDH), co-expressing SSCRM2 and glucose dehydrogenase, was constructed and optimized for protein expression. After optimizing the reaction conditions, whole-cell-catalyzed complete reduction of industrially relevant 300 g L-1 of 3 was realized, affording (3S)-2 with 99% ee and a space-time yield of 519.1 g∙L-1 ∙d-1 , representing the highest record for the biocatalytic synthesis of (3S)-2 reported to date. The E-factor of this biocatalytic synthesis was 24.5 (including water). Chiral alcohol (3S)-2 generated in this atom-economic synthesis was transformed to (2R,3S)-MPGM in 95% yield with 99% ee.
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Affiliation(s)
- Xiaoping Yue
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, P. R. China
| | - Yitong Li
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, P. R. China
| | - Lin Yang
- School of Health, Jiangxi Normal University, Nanchang, P. R. China
| | - Di Sang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
| | - Zedu Huang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
| | - Fener Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, P. R. China
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Xu H, Cheng Q, Qiu Y, Mao J, Ji Q, Zhu M, Zhang L, Wang Z, Li A, Xia Y. A Novel Strategy for Whole-Cell Biotransformation Enabling Simultaneous l-Phenyllactic Acid Production and Coenzyme Regeneration. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:20772-20781. [PMID: 37963219 DOI: 10.1021/acs.jafc.3c06387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
l-Phenyllactic acid (l-PLA) is a small molecular organic acid that exhibits a powerful capacity for inhibition against foodborne pathogens. In this work, we developed a new cost-effective and environmentally friendly process for the biosynthesis of l-PLA. This strategy designed a novel whole-cell biotransformation system employing two heterologous enzymes, namely, phenylalanine dehydrogenase (PheDH) and l-hydroxyisocaproate dehydrogenase (l-HicDH). The novelty of this strategy lies in the first-time utilization of these two enzymes, which not only enables cascade catalysis for the production of l-PLA but also facilitates the regeneration of the coenzymes (NAD+/NADH) using only two enzymes rather than introducing more heterologous enzymes to the system. Consequently, this strategy can effectively simplify the biosynthesis process of l-PLA and minimize production costs. The initial l-PLA yield using this process achieved 2.53 ± 0.07 g/L. Furthermore, through meticulous optimization of the parameters for inducible enzyme expression and l-PLA biosynthesis, the l-PLA yield was successfully increased to 4.68 ± 0.04 g/L with a yield rate of 64.54 ± 0.29%. Moreover, this novel strategy is versatile in the biosynthesis of other organic acids, which can be achieved by easily modulating the combinations of substrates and enzymes.
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Affiliation(s)
- Huidong Xu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Qianqian Cheng
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yangyu Qiu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jingjing Mao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Qinyi Ji
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Mulan Zhu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Lili Zhang
- Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Aitao Li
- School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Yu Xia
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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Janis MK, Zou W, Zastrow ML. A Single-Site Mutation Tunes Fluorescence and Chromophorylation of an Orange Fluorescent Cyanobacteriochrome. Chembiochem 2023; 24:e202300358. [PMID: 37423892 PMCID: PMC10653908 DOI: 10.1002/cbic.202300358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/11/2023]
Abstract
Cyanobacteriochrome (CBCR) cGMP-specific phosphodiesterase, adenylyl cyclase, and FhlA (GAF) domains bind bilin cofactors to confer sensory wavelengths important for various cyanobacterial photosensory processes. Many isolated GAF domains autocatalytically bind bilins, including the third GAF domain of CBCR Slr1393 from Synechocystis sp. PCC6803, which binds phycoerythrobilin (PEB) to yield a bright orange fluorescent protein. Compared to green fluorescent proteins, the smaller size and lack of an oxygen requirement for fluorescence make Slr1393g3 a promising platform for new genetically encoded fluorescent tools. Slr1393g3, however, shows low PEB binding efficiency (chromophorylation) at ~3 % compared to total Slr1393g3 expressed in E. coli. Here we used site-directed mutagenesis and plasmid redesign methods to improve Slr1393g3-PEB binding and demonstrate its utility as a fluorescent marker in live cells. Mutation at a single site, Trp496, tuned the emission over ~30 nm, likely by shifting autoisomerization of PEB to phycourobilin (PUB). Plasmid modifications for tuning relative expression of Slr1393g3 and PEB synthesis enzymes also improved chromophorylation and moving from a dual to single plasmid system facilitated exploration of a range of mutants via site saturation mutagenesis and sequence truncation. Collectively, the PEB/PUB chromophorylation was raised up to a total of 23 % with combined sequence truncation and W496H mutation.
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Affiliation(s)
- Makena K Janis
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, 77204, USA
| | - Wenping Zou
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, 77204, USA
| | - Melissa L Zastrow
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, 77204, USA
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Janis MK, Zou W, Zastrow ML. A Single Site Mutation Tunes Fluorescence and Chromophorylation of an Orange Fluorescent Cyanobacteriochrome. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.11.540396. [PMID: 37214816 PMCID: PMC10197653 DOI: 10.1101/2023.05.11.540396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cyanobacteriochrome (CBCR) GAF domains bind bilin cofactors to confer sensory wavelengths important for various cyanobacterial photosensory processes. Many isolated GAF domains autocatalytically bind bilins, becoming fluorescent. The third GAF domain of CBCR Slr1393 from Synechocystis sp. PCC6803 binds phycocyanobilin (PCB) natively, yielding red/green photoswitching properties but also binds phycoerythrobilin (PEB). GAF3-PCB has low quantum yields but non-photoswitching GAF3-PEB is brighter, making it a promising platform for new genetically encoded fluorescent tools. GAF3, however, shows low PEB binding efficiency (chromophorylation) at ∼3% compared to total protein expressed in E. coli . Here we explored site-directed mutagenesis and plasmid-based methods to improve GAF3-PEB binding and demonstrate its utility as a fluorescent marker in live cells. We found that a single mutation improved chromophorylation while tuning the emission over ∼30 nm, likely by shifting autoisomerization of PEB to phycourobilin (PUB). Plasmid modifications also improved chromophorylation and moving from a dual to single plasmid system facilitated exploration of a range of mutants via site saturation mutagenesis and sequence truncation. Collectively, the PEB/PUB chromophorylation was raised by ∼7-fold. Moreover, we show that protein-chromophore interactions can tune autoisomerization of PEB to PUB in a GAF domain, which will facilitate future engineering of similar GAF domain-derived fluorescent proteins.
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Affiliation(s)
- Makena K Janis
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, 77204 (USA)
| | - Wenping Zou
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, 77204 (USA)
| | - Melissa L Zastrow
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, 77204 (USA)
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Liu Y, Wu Z, Deska J. Coding Synthetic Chemistry Strategies for Furan Valorization into Bacterial Designer Cells. CHEMSUSCHEM 2023; 16:e202201790. [PMID: 36416391 PMCID: PMC10107124 DOI: 10.1002/cssc.202201790] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 05/11/2023]
Abstract
Following a synthetic chemistry blueprint for the valorization of lignocellulosic platform chemicals, this study showcases a so far unprecedented approach to implement non-natural enzyme modules in vivo. For the design of a novel functional whole cell tool, two purely abiotic transformations, a styrene monooxygenase-catalyzed Achmatowicz rearrangement and an alcohol dehydrogenase-mediated borrowing hydrogen redox isomerization, were incorporated into a recombinant bacterial host. Introducing this type of chemistry otherwise unknown in biosynthesis, the cellular factories were enabled to produce complex lactone building blocks in good yield from bio-based furan substrates. This whole cell system streamlined the synthetic cascade, eliminated isolation and purification steps, and provided a high degree of stereoselectivity that has so far been elusive in the chemical methodology.
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Affiliation(s)
- Yu‐Chang Liu
- Department of ChemistryUniversity of HelsinkiA.I. Virtasen aukio 100560HelsinkiFinland
- Department of ChemistryAalto UniversityKemistintie 102150EspooFinland
| | - Zhong‐Liu Wu
- CAS Key Laboratory of Environmental and Applied MicrobiologyEnvironmental Microbiology Key Laboratory of Sichuan ProvinceChengdu Institute of BiologyChinese Academy of SciencesChengdu610041P. R. China
| | - Jan Deska
- Department of ChemistryUniversity of HelsinkiA.I. Virtasen aukio 100560HelsinkiFinland
- Department of ChemistryAalto UniversityKemistintie 102150EspooFinland
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Lu Y, Wang J, Xu H, Zhang C, Cheng P, Du L, Tang L, Li J, Ou Z. Efficient Synthesis of Key Chiral Intermediate in Painkillers (R)-1-[3,5-Bis(trifluoromethyl)phenyl]ethanamine by Bienzyme Cascade System with R-ω-Transaminase and Alcohol Dehydrogenase Functions. Molecules 2022; 27:molecules27217331. [PMID: 36364166 PMCID: PMC9655816 DOI: 10.3390/molecules27217331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/12/2022] [Accepted: 10/25/2022] [Indexed: 11/22/2022] Open
Abstract
(R)-1-[3,5-bis(trifluoromethyl)phenyl]ethanamine, a key chiral intermediate of selective tetrodotoxin-sensitive blockers, was efficiently synthesized by a bienzyme cascade system formed by with R-ω-transaminase (ATA117) and an alcohol dehydrogenase (ADH) co-expression system. Herein, we report that the use of ATA117 as the biocatalyst for the amination of 3,5-bistrifluoromethylacetophenone led to the highest efficiency in product performance (enantiomeric excess > 99.9%). Moreover, to further improve the product yield, ADH was introduced into the reaction system to promote an equilibrium shift. Additionally, bienzyme cascade system was constructed by five different expression systems, including two tandem expression recombinant plasmids (pETDuet-ATA117-ADH and pACYCDuet-ATA117-ADH) and three co-expressed dual-plasmids (pETDuet-ATA117/pET28a-ADH, pACYCDuet-ATA117/pET28a-ADH, and pACYCDuet-ATA117/pETDuet-ADH), utilizing recombinant engineered bacteria. Subsequent studies revealed that as compared with ATA117 single enzyme, the substrate handling capacity of BL21(DE3)/pETDuet-ATA117-ADH (0.25 g wet weight) developed for bienzyme cascade system was increased by 1.50 folds under the condition of 40 °C, 180 rpm, 0.1 M pH9 Tris-HCl for 24 h. To the best of our knowledge, ours is the first report demonstrating the production of (R)-1-[3,5-bis(trifluoromethyl)phenyl]ethanamine using a bienzyme cascade system, thus providing valuable insights into the biosynthesis of chiral amines.
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Affiliation(s)
- Yuan Lu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jinmei Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Haobo Xu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Chuyue Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Pengpeng Cheng
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Lihua Du
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Lan Tang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jinghua Li
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
- Correspondence: (J.L.); (Z.O.); Tel./Fax: +86-571-88320320 (Z.O.)
| | - Zhimin Ou
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
- Correspondence: (J.L.); (Z.O.); Tel./Fax: +86-571-88320320 (Z.O.)
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Gao D, Song W, Wu J, Guo L, Gao C, Liu J, Chen X, Liu L. Efficient Production of L‐Homophenylalanine by Enzymatic‐Chemical Cascade Catalysis. Angew Chem Int Ed Engl 2022; 61:e202207077. [DOI: 10.1002/anie.202207077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Dengke Gao
- State Key Laboratory of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Wei Song
- School of Life Sciences and Health Engineering Jiangnan University Wuxi 214122 China
| | - Jing Wu
- School of Life Sciences and Health Engineering Jiangnan University Wuxi 214122 China
| | - Liang Guo
- State Key Laboratory of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Cong Gao
- State Key Laboratory of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Jia Liu
- State Key Laboratory of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Xiulai Chen
- State Key Laboratory of Food Science and Technology Jiangnan University Wuxi 214122 China
| | - Liming Liu
- State Key Laboratory of Food Science and Technology Jiangnan University Wuxi 214122 China
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Efficient Production of L‐homophenylalanine by Enzymatic–Chemical Cascade Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hu S, Li Y, Zhang A, Li H, Chen K, Ouyang P. Designing of an Efficient Whole-Cell Biocatalyst System for Converting L-Lysine Into Cis-3-Hydroxypipecolic Acid. Front Microbiol 2022; 13:945184. [PMID: 35832817 PMCID: PMC9271919 DOI: 10.3389/fmicb.2022.945184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/03/2022] [Indexed: 11/30/2022] Open
Abstract
Cis-3-hydroxypipecolic acid (cis-3-HyPip), a key structural component of tetrapeptide antibiotic GE81112, which has attracted substantial attention for its broad antimicrobial properties and unique ability to inhibit bacterial translation initiation. In this study, a combined strategy to increase the productivity of cis-3-HyPip was investigated. First, combinatorial optimization of the ribosomal binding site (RBS) sequence was performed to tune the gene expression translation rates of the pathway enzymes. Next, in order to reduce the addition of the co-substrate α-ketoglutarate (2-OG), the major engineering strategy was to reconstitute the tricarboxylic acid (TCA) cycle of Escherichia coli to force the metabolic flux to go through GetF catalyzed reaction for 2-OG to succinate conversion, a series of engineered strains were constructed by the deletion of the relevant genes. In addition, the metabolic flux (gltA and icd) was improved and glucose concentrations were optimized to enhance the supply and catalytic efficiency of continuous 2-OG supply powered by glucose. Finally, under optimal conditions, the cis-3-HyPip titer of the best strain catalysis reached 33 mM, which was remarkably higher than previously reported.
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Schwaiger KN, Voit A, Wiltschi B, Nidetzky B. Engineering cascade biocatalysis in whole cells for bottom-up synthesis of cello-oligosaccharides: flux control over three enzymatic steps enables soluble production. Microb Cell Fact 2022; 21:61. [PMID: 35397553 PMCID: PMC8994397 DOI: 10.1186/s12934-022-01781-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/24/2022] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Soluble cello-oligosaccharides (COS, β-1,4-D-gluco-oligosaccharides with degree of polymerization DP 2-6) have been receiving increased attention in different industrial sectors, from food and feed to cosmetics. Development of large-scale COS applications requires cost-effective technologies for their production. Cascade biocatalysis by the three enzymes sucrose-, cellobiose- and cellodextrin phosphorylase is promising because it enables bottom-up synthesis of COS from expedient substrates such as sucrose and glucose. A whole-cell-derived catalyst that incorporates the required enzyme activities from suitable co-expression would represent an important step towards making the cascade reaction fit for production. Multi-enzyme co-expression to reach distinct activity ratios is challenging in general, but it requires special emphasis for the synthesis of COS. Only a finely tuned balance between formation and elongation of the oligosaccharide precursor cellobiose results in the desired COS. RESULTS Here, we show the integration of cellodextrin phosphorylase into a cellobiose-producing whole-cell catalyst. We arranged the co-expression cassettes such that their expression levels were upregulated. The most effective strategy involved a custom vector design that placed the coding sequences for cellobiose phosphorylase (CbP), cellodextrin phosphorylase (CdP) and sucrose phosphorylase (ScP) in a tricistron in the given order. The expression of the tricistron was controlled by the strong T7lacO promoter and strong ribosome binding sites (RBS) for each open reading frame. The resulting whole-cell catalyst achieved a recombinant protein yield of 46% of total intracellular protein in an optimal ScP:CbP:CdP activity ratio of 10:2.9:0.6, yielding an overall activity of 315 U/g dry cell mass. We demonstrated that bioconversion catalyzed by a semi-permeabilized whole-cell catalyst achieved an industrial relevant COS product titer of 125 g/L and a space-time yield of 20 g/L/h. With CbP as the cellobiose providing enzyme, flux into higher oligosaccharides (DP ≥ 6) was prevented and no insoluble products were formed after 6 h of conversion. CONCLUSIONS A whole-cell catalyst for COS biosynthesis was developed. The coordinated co-expression of the three biosynthesis enzymes balanced the activities of the individual enzymes such that COS production was maximized. With the flux control set to minimize the share of insolubles in the product, the whole-cell synthesis shows a performance with respect to yield, productivity, product concentration and quality that is promising for industrial production.
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Affiliation(s)
- Katharina N. Schwaiger
- grid.432147.70000 0004 0591 4434ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010 Graz, Austria
| | - Alena Voit
- grid.432147.70000 0004 0591 4434ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010 Graz, Austria
| | - Birgit Wiltschi
- grid.432147.70000 0004 0591 4434ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010 Graz, Austria
| | - Bernd Nidetzky
- grid.432147.70000 0004 0591 4434ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010 Graz, Austria ,grid.410413.30000 0001 2294 748XInstitute of Biotechnology and Biochemical Engineering, NAWI Graz, Graz University of Technology, Petersgasse 12, 8010 Graz, Austria
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12
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Mehta D, Chirmade T, Tungekar AA, Gani K, Bhambure R. Cloning and expression of antibody fragment (Fab) I: Effect of expression construct and induction strategies on light and heavy chain gene expression. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Wu WH, Bai X, Shao Y, Yang C, Wei J, Wei W, Zhang WB. Higher Order Protein Catenation Leads to an Artificial Antibody with Enhanced Affinity and In Vivo Stability. J Am Chem Soc 2021; 143:18029-18040. [PMID: 34664942 DOI: 10.1021/jacs.1c06169] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The chemical topology is a unique dimension for protein engineering, yet the topological diversity and architectural complexity of proteins remain largely untapped. Herein, we report the biosynthesis of complex topological proteins using a rationally engineered, cross-entwining peptide heterodimer motif derived from p53dim (an entangled homodimeric mutant of the tetramerization domain of the tumor suppressor protein p53). The incorporation of an electrostatic interaction at specific sites converts the p53dim homodimer motif into a pair of heterodimer motifs with high specificity for directing chain entanglement upon folding. Its combination with split-intein-mediated ligation and/or SpyTag/SpyCatcher chemistry facilitates the programmed synthesis of protein heterocatenane or [n]catenanes in cells, leading to a general and modular approach to complex protein catenanes containing various proteins of interest. Concatenation enhances not only the target protein's affinity but also the in vivo stability as shown by its prolonged circulation time in blood. As a proof of concept, artificial antibodies have been developed by embedding a human epidermal growth factor receptor 2-specific affibody onto the [n]catenane scaffolds and shown to exhibit a higher affinity and a better pharmacokinetic profile than the wild-type affibody. These results suggest that topology engineering holds great promise in the development of therapeutic proteins.
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Affiliation(s)
- Wen-Hao Wu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Xilin Bai
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Yu Shao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Chao Yang
- College of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, P. R. China
| | - Jingjing Wei
- College of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang, Henan 455000, P. R. China
| | - Wei Wei
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Wen-Bin Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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Zhao J, Wei H, Chen J, Li L, Li K, Liu J. Efficient biosynthesis of D-allulose in Bacillus subtilis through D-psicose 3-epimerase translation modification. Int J Biol Macromol 2021; 187:1-8. [PMID: 34293357 DOI: 10.1016/j.ijbiomac.2021.07.093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/01/2021] [Accepted: 07/14/2021] [Indexed: 10/20/2022]
Abstract
The combined catalysis of glucose isomerase (GI) and D-psicose 3-epimerase (DPEase) provided a convenient route for the direct synthesis of D-allulose from d-glucose, whose cost is lower than d-fructose. In the present research, the weak activity of DPEase was the key rate-limiting step and resulted in the accumulation of d-fructose in engineered Bacillus subtilis. Then, the 5'-untranslated region (5'-UTR) structure of the mRNA translational initiation region was optimized for the precise control of DPEase expression. The manipulation of the 5'-UTR region promoted the accessibility to ribosome binding and the stability of mRNA, resulting in a maximum of 1.73- and 1.98-fold increase in DPEase activity and intracellular mRNA amount, respectively. Under the optimal catalytic conditions of 75 °C, pH 6.5, 110 g/L d-glucose, and 1 mmol/L Co2+, the reaction equilibrium time was reduced from 7.6 h to 6.1 h. We hope that our results could provide a facilitated strategy for large-scale production of D-allulose at low-cost.
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Affiliation(s)
- Jingyi Zhao
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, Guangxi, China.
| | - Hongbei Wei
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, Guangxi, China.
| | - Jing Chen
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, Guangxi, China.
| | - Lihong Li
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, Guangxi, China.
| | - Kai Li
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, Guangxi, China; Sugar Industry Collaborative Innovation Center, Guangxi University, 100 Daxue Road, Nanning 530004, Guangxi, China.
| | - Jidong Liu
- College of Light Industry and Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, Guangxi, China; Sugar Industry Collaborative Innovation Center, Guangxi University, 100 Daxue Road, Nanning 530004, Guangxi, China.
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15
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Fan XM, Shen JJ, Xu YY, Gao J, Zhang YW. Metabolic integration of azide functionalized glycan on Escherichia coli cell surface for specific covalent immobilization onto magnetic nanoparticles with click chemistry. BIORESOURCE TECHNOLOGY 2021; 324:124689. [PMID: 33450627 DOI: 10.1016/j.biortech.2021.124689] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 06/12/2023]
Abstract
A method for specific immobilization of whole-cell with covalent bonds was developed through a click reaction between alkyne and azide groups. In this approach, magnetic nanoparticle Fe3O4@SiO2-NH2-alkyne was synthesized with Fe3O4 core preparation, SiO2 coating, and alkyne functionalization on the surface. The azides were successfully integrated onto the cell surface of the recombinant E. coli harboring glycerol dehydrogenase, which was employed as the model cell. The highest immobilization yield of 83% and activity recovery of 94% were obtained under the conditions of 0.67 mg mg-1 cell-support ratio, pH 6.0, temperature 45 °C, and 20 mM Cu2+ concentration. The immobilized cell showed good reusability, which remained over 50% of initial activity after 10 cycles of utilization. Its activity was 9.7-fold higher than that of the free cell at the condition of pH 8.0 and each optimal temperature. Furthermore, the immobilized cell showed significantly higher activity, operational stability, and reusability.
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Affiliation(s)
- Xiao-Man Fan
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Jia-Jia Shen
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Yuan-Yuan Xu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Jian Gao
- College of Petroleum and Chemical Engineering, Beibu Gulf University, 535100 Qinzhou, People's Republic of China
| | - Ye-Wang Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, People's Republic of China; College of Petroleum and Chemical Engineering, Beibu Gulf University, 535100 Qinzhou, People's Republic of China.
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16
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Dai Y, Li M, Jiang B, Zhang T, Chen J. Whole-cell biosynthesis of d-tagatose from maltodextrin by engineered Escherichia coli with multi-enzyme co-expression system. Enzyme Microb Technol 2021; 145:109747. [PMID: 33750537 DOI: 10.1016/j.enzmictec.2021.109747] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/13/2021] [Accepted: 01/13/2021] [Indexed: 01/11/2023]
Abstract
d-tagatose is a functional sweetener that occurs in small quantity in nature. It is mainly produced through the isomerization of d-galactose by l-arabinose isomerase (l-AI; EC 5.3.1.4). However, the cost of d-galactose is much higher than those commonly used for the production of functional sweeteners such as glucose, maltodextrin, or starch. Here, a multi-enzyme catalytic system consists of five enzymes that utilizes maltodextrin as substrate to synthesize d-tagatose were co-expressed in E. coli, resulting in recombinant cells harboring the plasmids pETDuet-αgp-pgm and pCDFDuet-pgi-gatz-pgp. The activity of this whole-cell catalyst was optimal at 60 °C and pH 7.5, and 1 mM Mg2+ and 50 mM phosphate were the optimal cofactors for activity. Under the optimal reaction conditions, 2.08 and 3.2 g L-1d-tagatose were produced by using 10 and 20 g L-1 maltodextrin as substrates with recombinant cells for 24 h. This co-expression system provides a one-pot synthesis approach for the production of d-tagatose using inexpensive substrate, avoiding enzymes purification steps and supplementation of expensive cofactors.
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Affiliation(s)
- Yiwei Dai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Mengli Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Bo Jiang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China.
| | - Tao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China
| | - Jingjing Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China
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17
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Zhang DP, Jing XR, Wu LJ, Fan AW, Nie Y, Xu Y. Highly selective synthesis of D-amino acids via stereoinversion of corresponding counterpart by an in vivo cascade cell factory. Microb Cell Fact 2021; 20:11. [PMID: 33422055 PMCID: PMC7797136 DOI: 10.1186/s12934-020-01506-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/29/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND D-Amino acids are increasingly used as building blocks to produce pharmaceuticals and fine chemicals. However, establishing a universal biocatalyst for the general synthesis of D-amino acids from cheap and readily available precursors with few by-products is challenging. In this study, we developed an efficient in vivo biocatalysis system for the synthesis of D-amino acids from L-amino acids by the co-expression of membrane-associated L-amino acid deaminase obtained from Proteus mirabilis (LAAD), meso-diaminopimelate dehydrogenases obtained from Symbiobacterium thermophilum (DAPDH), and formate dehydrogenase obtained from Burkholderia stabilis (FDH), in recombinant Escherichia coli. RESULTS To generate the in vivo cascade system, three strategies were evaluated to regulate enzyme expression levels, including single-plasmid co-expression, double-plasmid co-expression, and double-plasmid MBP-fused co-expression. The double-plasmid MBP-fused co-expression strain Escherichia coli pET-21b-MBP-laad/pET-28a-dapdh-fdh, exhibiting high catalytic efficiency, was selected. Under optimal conditions, 75 mg/mL of E. coli pET-21b-MBP-laad/pET-28a-dapdh-fdh whole-cell biocatalyst asymmetrically catalyzed the stereoinversion of 150 mM L-Phe to D-Phe, with quantitative yields of over 99% ee in 24 h, by the addition of 15 mM NADP+ and 300 mM ammonium formate. In addition, the whole-cell biocatalyst was used to successfully stereoinvert a variety of aromatic and aliphatic L-amino acids to their corresponding D-amino acids. CONCLUSIONS The newly constructed in vivo cascade biocatalysis system was effective for the highly selective synthesis of D-amino acids via stereoinversion.
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Affiliation(s)
- Dan-Ping Zhang
- School of Biotechnology and Key laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Xiao-Ran Jing
- School of Biotechnology and Key laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Lun-Jie Wu
- School of Biotechnology and Key laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - An-Wen Fan
- School of Biotechnology and Key laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
| | - Yao Nie
- School of Biotechnology and Key laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China.
- Suqian Industrial Technology Research Institute of Jiangnan University, Suqian, 223814, China.
| | - Yan Xu
- School of Biotechnology and Key laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
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18
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Liu D, Ke X, Hu ZC, Zheng YG. Combinational expression of D-sorbitol dehydrogenase and pyrroloquinoline quinone increases 6-(N-hydroxyethyl)-amino-6-deoxy-α-L-sorbofuranose production by Gluconobacter oxydans through cofactor manipulation. Enzyme Microb Technol 2020; 141:109670. [PMID: 33051020 DOI: 10.1016/j.enzmictec.2020.109670] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/21/2020] [Accepted: 09/10/2020] [Indexed: 11/29/2022]
Abstract
6-(N-hydroxyethyl)-amino-6-deoxy-l-sorbofuranose (6NSL), a key precursor in the synthesis of miglitol, is produced from N-2-hydroxyethyl-glucamine (NHEG) by the regioselective oxidation of Gluconobacter oxydans. The limitation of PQQ biosynthesis became a bottleneck for improvement of PQQ-dependent D-sorbitol dehydrogenase (mSLDH) activity. Five expression plasmids were constructed for the co-expression of the pqqABCDE gene cluster and the tldD gene on the basis of pBBR1-gHp0169-sldAB in G. oxydans to increase the biosynthesis of PQQ. The G. oxydans/pGA004, in which pqqABCDE and tldD were expressed as a cluster under the control of gHp0169 promoter, showed the optimal performance. The intracellular PQQ concentration and specific activity of mSLDH in cells increased by 79.3 % and 53.7 %, respectively, compared to that in G. oxydans/pBBR-sldAB. Then, the repeated batch biotransformation of NHEG to 6NSL by G. oxydans/pGA004 was carried out. Up to 75.0 ± 3.0 g/L of 6NSL production with 94.5 ± 3.6 % of average conversion rate of NHEG to 6NSL was achieved after four cycles of run. These results indicated that G. oxydans/pGA004 with high productivity had great potential for 6NSL production in industrial bioprocess.
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Affiliation(s)
- Dong Liu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China
| | - Xia Ke
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China
| | - Zhong-Ce Hu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China.
| | - Yu-Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China
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19
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Schwaiger KN, Voit A, Dobiašová H, Luley C, Wiltschi B, Nidetzky B. Plasmid Design for Tunable Two-Enzyme Co-Expression Promotes Whole-Cell Production of Cellobiose. Biotechnol J 2020; 15:e2000063. [PMID: 32668097 DOI: 10.1002/biot.202000063] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/16/2020] [Indexed: 12/30/2022]
Abstract
Catalyst development for biochemical cascade reactions often follows a "whole-cell-approach" in which a single microbial cell is made to express all required enzyme activities. Although attractive in principle, the approach can encounter limitations when efficient overall flux necessitates precise balancing between activities. This study shows an effective integration of major design strategies from synthetic biology to a coherent development of plasmid vectors, enabling tunable two-enzyme co-expression in E. coli, for whole-cell-production of cellobiose. An efficient transformation of sucrose and glucose into cellobiose by a parallel (countercurrent) cascade of disaccharide phosphorylases requires the enzyme co-expression to cope with large differences in specific activity of cellobiose phosphorylase (14 U mg-1 ) and sucrose phosphorylase (122 U mg-1 ). Mono- and bicistronic co-expression strategies controlling transcription, transcription-translation coupling or plasmid replication are analyzed for effect on activity and stable producibility of the whole-cell-catalyst. A key role of bom (basis of mobility) for plasmid stability dependent on the ori is reported and the importance of RBS (ribosome binding site) strength is demonstrated. Whole cell catalysts show high specific rates (460 µmol cellobiose min-1 g-1 dry cells) and performance metrics (30 g L-1 ; ∼82% yield; 3.8 g L-1 h-1 overall productivity) promising for cellobiose production.
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Affiliation(s)
- Katharina N Schwaiger
- ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010, Graz, Austria
| | - Alena Voit
- ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010, Graz, Austria
| | - Hana Dobiašová
- ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010, Graz, Austria
| | - Christiane Luley
- ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010, Graz, Austria
| | - Birgit Wiltschi
- ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010, Graz, Austria
| | - Bernd Nidetzky
- ACIB-Austrian Centre of Industrial Biotechnology, Krenngasse 37, 8010, Graz, Austria.,Institute of Biotechnology and Biochemical Engineering, TU Graz, NAWI Graz, Petersgasse 12, 8010, Graz, Austria
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20
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Pu X, He C, Yang Y, Wang W, Hu K, Xu Z, Song J. In Vivo Production of Five Crocins in the Engineered Escherichia coli. ACS Synth Biol 2020; 9:1160-1168. [PMID: 32216376 DOI: 10.1021/acssynbio.0c00039] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Crocins are highly valuable medicinal compounds for treating human disorders, and they also serve as spices and coloring agents. However, the supply of crocins from plant extractions is insufficient for current demands, and using synthetic biology to produce crocins remains a big challenge. Here, we report the in vivo production of five types of crocins in E. coli with GjUGT94E13 and GjUGT74F8, which are responsible for the glycosylation of crocetin, from the crocin-producing plant Gardenia jasminoides. Subsequently, native UDP-glucose biosynthesis in E. coli is strengthened by the overexpression of pgm and galU. The optimization of catalytic reactions has demonstrated that 50 mM NaH2PO4-Na2HPO4 buffer (pH 8.0) plus 5% glucose is the best medium to use for the efficient glycosylation of crocetin. In engineered E. coli, the conversion rate of crocin III and crocin V from crocetin (50 mg/L) by the catalysis of GjUGT74F8 was increased to 66.1%, and the conversion rate of five types of crocins from crocetin (50 mg/L) via GjUGT94E13 and GjUGT74F8 was 59.6%, much higher than the catalytic activity of the reported microbial UGTs. This study not only sheds light on the in vivo biosynthesis of crocins in E. coli, but also provides important genetic tools for the de novo synthesis of crocins.
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Affiliation(s)
- Xiangdong Pu
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Chunnian He
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Yan Yang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Wei Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Kaizhi Hu
- Chongqing Institute of Medicinal Plant Cultivation, Chongqing, 408435, China
| | - Zhichao Xu
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Jingyuan Song
- Key Lab of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Engineering Research Center of Chinese Medicine Resource, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
- Yunnan Branch, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Jinghong, 666100, China
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21
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Ménil S, Petit J, Courvoisier‐Dezord E, Debard A, Pellouin V, Reignier T, Sergent M, Deyris V, Duquesne K, Berardinis V, Alphand V. Tuning of the enzyme ratio in a neutral redox convergent cascade: A key approach for an efficient one‐pot/two‐step biocatalytic whole‐cell system. Biotechnol Bioeng 2019; 116:2852-2863. [DOI: 10.1002/bit.27133] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/22/2019] [Accepted: 07/27/2019] [Indexed: 01/10/2023]
Affiliation(s)
- Sidiky Ménil
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Jean‐Louis Petit
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRSUniversite Evry, Université Paris‐Saclay Evry France
| | | | - Adrien Debard
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRSUniversite Evry, Université Paris‐Saclay Evry France
| | - Virginie Pellouin
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRSUniversite Evry, Université Paris‐Saclay Evry France
| | - Thomas Reignier
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Michelle Sergent
- Aix Marseille Univ, Univ Avignon, CNRS, IRD, IMBE Marseille France
| | - Valérie Deyris
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Katia Duquesne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Véronique Berardinis
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRSUniversite Evry, Université Paris‐Saclay Evry France
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22
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Ding P, Fang L, Wang G, Li X, Huang S, Gao Y, Zhu J, Xiao L, Tong J, Chen F, Xia G. Wheat methionine sulfoxide reductase A4.1 interacts with heme oxygenase 1 to enhance seedling tolerance to salinity or drought stress. PLANT MOLECULAR BIOLOGY 2019; 101:203-220. [PMID: 31297725 DOI: 10.1007/s11103-019-00901-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/04/2019] [Indexed: 06/10/2023]
Abstract
Here, a functional characterization of a wheat MSR has been presented: this protein makes a contribution to the plant's tolerance of abiotic stress, acting through its catalytic capacity and its modulation of ROS and ABA pathways. The molecular mechanism and function of certain members of the methionine sulfoxide reductase (MSR) gene family have been defined, however, these analyses have not included the wheat equivalents. The wheat MSR gene TaMSRA4.1 is inducible by salinity and drought stress and in this study, we demonstrate that its activity is restricted to the Met-S-SO enantiomer, and its subcellular localization is in the chloroplast. Furthermore, constitutive expression of TaMSRA4.1 enhanced the salinity and drought tolerance of wheat and Arabidopsis thaliana. In these plants constitutively expressing TaMSRA4.1, the accumulation of reactive oxygen species (ROS) was found to be influenced through the modulation of genes encoding proteins involved in ROS signaling, generation and scavenging, while the level of endogenous abscisic acid (ABA), and the sensitivity of stomatal guard cells to exogenous ABA, was increased. A yeast two-hybrid screen, bimolecular fluorescence complementation and co-immunoprecipitation assays demonstrated that heme oxygenase 1 (HO1) interacted with TaMSRA4.1, and that this interaction depended on a TaHO1 C-terminal domain. In plants subjected to salinity or drought stress, TaMSRA4.1 reversed the oxidation of TaHO1, activating ROS and ABA signaling pathways, but not in the absence of HO1. The aforementioned properties advocate TaMSRA4.1 as a candidate for plant genetic enhancement.
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Affiliation(s)
- Pengcheng Ding
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Linlin Fang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Guangling Wang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Xiang Li
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Shu Huang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Yankun Gao
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Jiantang Zhu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Langtao Xiao
- Hunan Provincial Key Laboratory of Phytohormones, Southern Regional Collaborative Innovation Center for Grain and Oil Crops, Hunan Agricultural University, Changsha, 410128, China
| | - Jianhua Tong
- Hunan Provincial Key Laboratory of Phytohormones, Southern Regional Collaborative Innovation Center for Grain and Oil Crops, Hunan Agricultural University, Changsha, 410128, China
| | - Fanguo Chen
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China.
| | - Guangmin Xia
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
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23
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Hou Y, Gao B, Cui J, Tan Z, Qiao C, Jia S. Combination of multi-enzyme expression fine-tuning and co-substrates addition improves phenyllactic acid production with an Escherichia coli whole-cell biocatalyst. BIORESOURCE TECHNOLOGY 2019; 287:121423. [PMID: 31103936 DOI: 10.1016/j.biortech.2019.121423] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 06/09/2023]
Abstract
The aim of this study was to develop an environmentally safe and efficient method for phenyllactic acid (PLA) production using whole-cell cascade catalysis with l-amino acid deaminase (l-AAD), lactate dehydrogenase (LDH), and formate dehydrogenase (FDH). The PPA titer was low due to relatively low expression of LDH, intermediate accumulation, and lack of cofactors. To address this issue, ribosome binding site regulation, gene duplication, and induction optimization were performed to increased the PLA titer to 43.8 g/L. Then co-substrates (glucose, yeast extract, and glycerol) were used to increase NADH concentration and cell stability, resulting that the PLA titer was increased to 54.0 g/L, which is the highest reported production by biocatalyst. Finally, glucose was replaced with wheat straw hydrolysate as co-substrate to decrease the cost. Notably, the strategies reported herein may be generally applicable to other whole-cell cascade biocatalysts.
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Affiliation(s)
- Ying Hou
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China; Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control, 300457 Tianjin, China.
| | - Bo Gao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China; Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control, 300457 Tianjin, China
| | - Jiandong Cui
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China; Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control, 300457 Tianjin, China
| | - Zhilei Tan
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China; Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control, 300457 Tianjin, China
| | - Changsheng Qiao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China; Tianjin Peiyang Biotrans Co., Ltd, Tianjin 300457, China
| | - Shiru Jia
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, China; Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control, 300457 Tianjin, China.
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24
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Liu S, Zhang X, Liu F, Xu M, Yang T, Long M, Zhou J, Osire T, Yang S, Rao Z. Designing of a Cofactor Self-Sufficient Whole-Cell Biocatalyst System for Production of 1,2-Amino Alcohols from Epoxides. ACS Synth Biol 2019; 8:734-743. [PMID: 30840437 DOI: 10.1021/acssynbio.8b00364] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Optically pure 1,2-amino alcohols are highly valuable products as intermediates for chiral pharmaceutical products. Here we designed an environmentally friendly non-natural biocatalytic cascade for efficient synthesis of 1,2-amino alcohols from cheaper epoxides. A redesignated ω-transaminase PAKω-TA was tested and showed good bioactivity at a lower pH than other reported transaminases. The cascade was efficiently constructed as a single one-pot E. coli recombinant, by coupling SpEH (epoxide hydrolase), MnADH (alcohol dehydrogenase), and PAKω-TA. Furthermore, RBS regulation strategy was used to overcome the rate limiting step by increasing expression of MnADH. For cofactor regeneration and amino donor source, an interesting point was involved as that a cofactor self-sufficient system was designed by expression of GluDH. It established a "bridge" between the cofactor and the cosubstrate, such that the cofactor self-sufficient system could release cofactor (NADP+) and cosubstrate (l-Glutamine) regenerated simultaneously. The recombinant E. coli BL21 (SGMP) with cofactor self-sufficient whole-cell cascade biocatalysis showed high ee value (>99%) and high yield, with 99.6% conversion of epoxide ( S)-1a to 1,2-amino alcohol ( S)-1d in 10 h. It further converted ( S)-2a-5a to ( S)-2d-5d with varying conversion rates ranging between 65-96.4%. This study first provides one-step synthesis of optically pure 1,2-amino alcohols from ( S)-epoxides employing a synthetic redox-self-sufficient cascade.
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Affiliation(s)
- Song Liu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xian Zhang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Fei Liu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Meijuan Xu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Taowei Yang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Mengfei Long
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Junping Zhou
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Tolbert Osire
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Shangtian Yang
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Zhiming Rao
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
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25
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Zhang S, Xie J, Zhao L, Pei J, Su E, Xiao W, Wang Z. Cloning, overexpression and characterization of a thermostable β-xylosidase from Thermotoga petrophila and cooperated transformation of ginsenoside extract to ginsenoside 20(S)-Rg3 with a β-glucosidase. Bioorg Chem 2019; 85:159-167. [DOI: 10.1016/j.bioorg.2018.12.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/17/2018] [Accepted: 12/19/2018] [Indexed: 11/26/2022]
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26
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Zhang JD, Yang XX, Jia Q, Zhao JW, Gao LL, Gao WC, Chang HH, Wei WL, Xu JH. Asymmetric ring opening of racemic epoxides for enantioselective synthesis of (S)-β-amino alcohols by a cofactor self-sufficient cascade biocatalysis system. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02377h] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Asymmetric ring opening of racemic epoxides to enantiopure β-amino alcohols via a cascade biocatalysis system.
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Affiliation(s)
- Jian-Dong Zhang
- Department of Biological and Pharmaceutical Engineering
- College of Biomedical Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Xiao-Xiao Yang
- Department of Biological and Pharmaceutical Engineering
- College of Biomedical Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Qiao Jia
- Department of Biological and Pharmaceutical Engineering
- College of Biomedical Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Jian-Wei Zhao
- Department of Biological and Pharmaceutical Engineering
- College of Biomedical Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Li-Li Gao
- College of Environmental Science and Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - When-Chao Gao
- Department of Biological and Pharmaceutical Engineering
- College of Biomedical Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Hong-Hong Chang
- Department of Biological and Pharmaceutical Engineering
- College of Biomedical Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Wen-Long Wei
- Department of Biological and Pharmaceutical Engineering
- College of Biomedical Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Jian-He Xu
- Laboratory of Biocatalysis and Bioprocessing
- State Key Laboratory of Bioreactor Engineering
- East China University of Science and Technology
- Shanghai
- China
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27
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Qian Y, Liu J, Song W, Chen X, Luo Q, Liu L. Production of β‐Alanine from Fumaric Acid Using a Dual‐Enzyme Cascade. ChemCatChem 2018. [DOI: 10.1002/cctc.201801050] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yuanyuan Qian
- State Key Laboratory of Food Science and TechnologyJiangnan University Wuxi 214122 P. R. China
- Key Laboratory of Industrial Biotechnology Ministry of EducationJiangnan University Wuxi 214122 P. R. China
| | - Jia Liu
- State Key Laboratory of Food Science and TechnologyJiangnan University Wuxi 214122 P. R. China
- Key Laboratory of Industrial Biotechnology Ministry of EducationJiangnan University Wuxi 214122 P. R. China
| | - Wei Song
- State Key Laboratory of Food Science and TechnologyJiangnan University Wuxi 214122 P. R. China
- Key Laboratory of Industrial Biotechnology Ministry of EducationJiangnan University Wuxi 214122 P. R. China
| | - Xiulai Chen
- State Key Laboratory of Food Science and TechnologyJiangnan University Wuxi 214122 P. R. China
- Key Laboratory of Industrial Biotechnology Ministry of EducationJiangnan University Wuxi 214122 P. R. China
| | - Qiuling Luo
- State Key Laboratory of Food Science and TechnologyJiangnan University Wuxi 214122 P. R. China
- Key Laboratory of Industrial Biotechnology Ministry of EducationJiangnan University Wuxi 214122 P. R. China
| | - Liming Liu
- State Key Laboratory of Food Science and TechnologyJiangnan University Wuxi 214122 P. R. China
- Key Laboratory of Industrial Biotechnology Ministry of EducationJiangnan University Wuxi 214122 P. R. China
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28
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Yang Z, Pei X, Xu G, Wu J, Yang L. N-terminal engineering of overlapping genes in the nitrile hydratase gene cluster improved its activity. Enzyme Microb Technol 2018; 117:9-14. [PMID: 30037557 DOI: 10.1016/j.enzmictec.2018.05.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 05/23/2018] [Accepted: 05/25/2018] [Indexed: 01/06/2023]
Abstract
Nitrile hydratase which catalyzes the hydration of nitriles to the corresponding amides is operon-encoded. However, when heterologously expressed, genes in the same operon are usually not equally expressed, and the ratio needs to be fine-tuned. A gene cluster of three genes (corresponding to α-subunit, β-subunit and activator) encoding the nitrile hydratase was cloned from Aurantimonas manganoxydans ATCC BAA-1229 and expressed in Escherichia coli. However, difficulty was encountered in heterologous expression of the activator and the expression level of β-subunit was lower than that of α-subunit, which together resulted in low catalytic efficiency. To improve the expression of activator, a set of SKIK tags were fused to the N-terminus of the activator. To elevate the expression level of β-subunit, a silent mutation strategy was applied in the overlapping sequence with α-subunit around its translation initial region. Finally, the expression of β-subunit and activator were improved and the maximum activity of NHase1229 was doubled, reaching 160 U/mL towards 3-cyanopyridine. These results indicate that N-terminal engineering is an efficient strategy for optimizing the expression of multiple genes in operons.
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Affiliation(s)
- Zhengfei Yang
- Institute of Bioengineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xiaolin Pei
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310012, China
| | - Gang Xu
- Institute of Bioengineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Jianping Wu
- Institute of Bioengineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Lirong Yang
- Institute of Bioengineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
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29
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Affiliation(s)
- Shuke Wu
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 Singapore 117585 Singapore
| | - Zhi Li
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 Singapore 117585 Singapore
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30
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Affiliation(s)
- Josef M. Sperl
- Chair of Chemistry of Biogenic
Resources, Technical University of Munich, Campus Straubing for Biotechnology
and Sustainability, Schulgasse 16, 94315 Straubing, Germany
| | - Volker Sieber
- Chair of Chemistry of Biogenic
Resources, Technical University of Munich, Campus Straubing for Biotechnology
and Sustainability, Schulgasse 16, 94315 Straubing, Germany
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31
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Efficient biosynthesis of l-phenylglycine by an engineered Escherichia coli with a tunable multi-enzyme-coordinate expression system. Appl Microbiol Biotechnol 2018; 102:2129-2141. [DOI: 10.1007/s00253-018-8741-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/13/2017] [Accepted: 12/26/2017] [Indexed: 02/06/2023]
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32
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Berlec A, Škrlec K, Kocjan J, Olenic M, Štrukelj B. Single plasmid systems for inducible dual protein expression and for CRISPR-Cas9/CRISPRi gene regulation in lactic acid bacterium Lactococcus lactis. Sci Rep 2018; 8:1009. [PMID: 29343791 PMCID: PMC5772564 DOI: 10.1038/s41598-018-19402-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 12/29/2017] [Indexed: 12/17/2022] Open
Abstract
Lactococcus lactis is a food-grade lactic acid bacterium that is used in the dairy industry as a cell factory and as a host for recombinant protein expression. The nisin-controlled inducible expression (NICE) system is frequently applied in L. lactis; however new tools for its genetic modification are highly desirable. In this work NICE was adapted for dual protein expression. Plasmid pNZDual, that contains two nisin promoters and multiple cloning sites (MCSs), and pNZPolycist, that contains a single nisin promoter and two MCSs separated by the ribosome binding site, were constructed. Genes for the infrared fluorescent protein and for the human IgG-binding DARPin were cloned in all possible combinations to assess the protein yield. The dual promoter plasmid pNZDual enabled balanced expression of the two model proteins. It was exploited for the development of a single-plasmid inducible CRISPR-Cas9 system (pNZCRISPR) by using a nisin promoter, first to drive Cas9 expression and, secondly, to drive single guide RNA transcription. sgRNAs against htrA and ermR directed Cas9 against genomic or plasmid DNA and caused changes in bacterial growth and survival. Replacing Cas9 by dCas9 enabled CRISPR interference-mediated silencing of the upp gene. The present study introduces a new series of plasmids for advanced genetic modification of lactic acid bacterium L. lactis.
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Affiliation(s)
- Aleš Berlec
- Department of Biotechnology, Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia.
| | - Katja Škrlec
- Department of Biotechnology, Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
- Graduate School of Biomedicine, Faculty of Medicine, University of Ljubljana, SI-1000, Ljubljana, Slovenia
| | - Janja Kocjan
- Department of Biotechnology, Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, SI-1000, Ljubljana, Slovenia
| | - Maria Olenic
- Department of Biotechnology, Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
- Faculty of Pharmacy, Charles University in Prague, 500 05, Hradec Králové, Czech Republic
| | - Borut Štrukelj
- Department of Biotechnology, Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, SI-1000, Ljubljana, Slovenia
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33
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Farnberger JE, Lorenz E, Richter N, Wendisch VF, Kroutil W. In vivo plug-and-play: a modular multi-enzyme single-cell catalyst for the asymmetric amination of ketoacids and ketones. Microb Cell Fact 2017; 16:132. [PMID: 28754115 PMCID: PMC5534079 DOI: 10.1186/s12934-017-0750-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 07/24/2017] [Indexed: 11/24/2022] Open
Abstract
Background Transaminases have become a key tool in biocatalysis to introduce the amine functionality into a range of molecules like prochiral α-ketoacids and ketones. However, due to the necessity of shifting the equilibrium towards the product side (depending on the amine donor) an efficient amination system may require three enzymes. So far, this well-established transformation has mainly been performed in vitro by assembling all biocatalysts individually, which comes along with elaborate and costly preparation steps. We present the design and characterization of a flexible approach enabling a quick set-up of single-cell biocatalysts producing the desired enzymes. By choosing an appropriate co-expression strategy, a modular system was obtained, allowing for flexible plug-and-play combination of enzymes chosen from the toolbox of available transaminases and/or recycling enzymes tailored for the desired application. Results By using a two-plasmid strategy for the recycling enzyme and the transaminase together with chromosomal integration of an amino acid dehydrogenase, two enzyme modules could individually be selected and combined with specifically tailored E. coli strains. Various plug-and-play combinations of the enzymes led to the construction of a series of single-cell catalysts suitable for the amination of various types of substrates. On the one hand the fermentative amination of α-ketoacids coupled both with metabolic and non-metabolic cofactor regeneration was studied, giving access to the corresponding α-amino acids in up to 96% conversion. On the other hand, biocatalysts were employed in a non-metabolic, “in vitro-type” asymmetric reductive amination of the prochiral ketone 4-phenyl-2-butanone, yielding the amine in good conversion (77%) and excellent stereoselectivity (ee = 98%). Conclusions The described modularized concept enables the construction of tailored single-cell catalysts which provide all required enzymes for asymmetric reductive amination in a flexible fashion, representing a more efficient approach for the production of chiral amines and amino acids. Electronic supplementary material The online version of this article (doi:10.1186/s12934-017-0750-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Judith E Farnberger
- Austrian Centre of Industrial Biotechnology, ACIB GmbH, c/o University of Graz, Heinrichstrasse 28, 8010, Graz, Austria
| | - Elisabeth Lorenz
- Genetics of Prokaryotes, Faculty of Biology & CeBiTec, Bielefeld University, 33501, Bielefeld, Germany
| | - Nina Richter
- Austrian Centre of Industrial Biotechnology, ACIB GmbH, c/o University of Graz, Heinrichstrasse 28, 8010, Graz, Austria
| | - Volker F Wendisch
- Genetics of Prokaryotes, Faculty of Biology & CeBiTec, Bielefeld University, 33501, Bielefeld, Germany.
| | - Wolfgang Kroutil
- Austrian Centre of Industrial Biotechnology, ACIB GmbH, c/o University of Graz, Heinrichstrasse 28, 8010, Graz, Austria. .,Institute of Chemistry, University of Graz, NAWI Graz, BioTechMed Graz, Heinrichstrasse 28, 8010, Graz, Austria.
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34
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Schrittwieser JH, Velikogne S, Hall M, Kroutil W. Artificial Biocatalytic Linear Cascades for Preparation of Organic Molecules. Chem Rev 2017; 118:270-348. [DOI: 10.1021/acs.chemrev.7b00033] [Citation(s) in RCA: 371] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Joerg H. Schrittwieser
- Institute
of Chemistry, Organic and Bioorganic Chemistry, University of Graz, NAWI Graz, BioTechMed Graz, Heinrichstrasse 28, 8010 Graz, Austria
| | - Stefan Velikogne
- ACIB
GmbH, Department of Chemistry, University of Graz, Heinrichstrasse
28, 8010 Graz, Austria
| | - Mélanie Hall
- Institute
of Chemistry, Organic and Bioorganic Chemistry, University of Graz, NAWI Graz, BioTechMed Graz, Heinrichstrasse 28, 8010 Graz, Austria
| | - Wolfgang Kroutil
- Institute
of Chemistry, Organic and Bioorganic Chemistry, University of Graz, NAWI Graz, BioTechMed Graz, Heinrichstrasse 28, 8010 Graz, Austria
- ACIB
GmbH, Department of Chemistry, University of Graz, Heinrichstrasse
28, 8010 Graz, Austria
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