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Qin Z, Zhou Y, Li Z, Höhne M, Bornscheuer UT, Wu S. Production of Biobased Ethylbenzene by Cascade Biocatalysis with an Engineered Photodecarboxylase. Angew Chem Int Ed Engl 2024; 63:e202314566. [PMID: 37947487 DOI: 10.1002/anie.202314566] [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: 09/28/2023] [Revised: 11/06/2023] [Accepted: 11/10/2023] [Indexed: 11/12/2023]
Abstract
Production of commodity chemicals, such as benzene, toluene, ethylbenzene, and xylenes (BTEX), from renewable resources is key for a sustainable society. Biocatalysis enables one-pot multistep transformation of bioresources under mild conditions, yet it is often limited to biochemicals. Herein, we developed a non-natural three-enzyme cascade for one-pot conversion of biobased l-phenylalanine into ethylbenzene. The key rate-limiting photodecarboxylase was subjected to structure-guided semirational engineering, and a triple mutant CvFAP(Y466T/P460A/G462I) was obtained with a 6.3-fold higher productivity. With this improved photodecarboxylase, an optimized two-cell sequential process was developed to convert l-phenylalanine into ethylbenzene with 82 % conversion. The cascade reaction was integrated with fermentation to achieve the one-pot bioproduction of ethylbenzene from biobased glycerol, demonstrating the potential of cascade biocatalysis plus enzyme engineering for the production of biobased commodity chemicals.
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Affiliation(s)
- Zhaoyang Qin
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Street, Wuhan, 430070, P. R. China
| | - Yi Zhou
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Street, Wuhan, 430070, P. R. China
| | - Zhi Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Matthias Höhne
- Institute of Chemistry, Technische Universität Berlin, Müller-Breslau-Str. 10, 10623, Berlin, Germany
| | - Uwe T Bornscheuer
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix Hausdorff-Str. 4, 17489, Greifswald, Germany
| | - Shuke Wu
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Street, Wuhan, 430070, P. R. China
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix Hausdorff-Str. 4, 17489, Greifswald, Germany
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Wang J, Dong R, Yin J, Liang J, Gao H. Optimization of multi-enzyme cascade process for the biosynthesis of benzylamine. Biosci Biotechnol Biochem 2023; 87:1373-1380. [PMID: 37567780 DOI: 10.1093/bbb/zbad111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023]
Abstract
Benzylamine is a valuable intermediate in the synthesis of organic compounds such as curing agents and antifungal drugs. To improve the efficiency of benzylamine biosynthesis, we identified the enzymes involved in the multi-enzyme cascade, regulated the expression strength by using RBS engineering in Escherichia coli, and established a regeneration-recycling system for alanine. This is a cosubstrate, coupled to cascade reactions, which resulted in E. coli RARE-TP and can synthesize benzylamine using phenylalanine as a precursor. By optimizing the supply of cosubstrates alanine and ammonia, the yield of benzylamine produced by whole-cell catalysis was increased by 1.5-fold and 2.7-fold, respectively, and the final concentration reached 6.21 mM. In conclusion, we achieved conversion from l-phenylalanine to benzylamine and increased the yield through enzyme screening, expression regulation, and whole-cell catalytic system optimization. This demonstrated a green and sustainable benzylamine synthesis method, which provides a reference and additional information for benzylamine biosynthesis research.
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Affiliation(s)
- Jinli Wang
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Runan Dong
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Jingxin Yin
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Jianhua Liang
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China
| | - Haijun Gao
- School of Life Science, Beijing Institute of Technology, Beijing, China
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3
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Xu B, Bai X, Zhang J, Li B, Zhang Y, Su R, Wang R, Wang Z, Lv Q, Zhang J, Li J. Metabolomic analysis of seminal plasma to identify goat semen freezability markers. Front Vet Sci 2023; 10:1132373. [PMID: 36968471 PMCID: PMC10036599 DOI: 10.3389/fvets.2023.1132373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/21/2023] [Indexed: 03/12/2023] Open
Abstract
Factors affecting sperm freezability in goat seminal plasma were investigated. Based on the total motility of thawed sperm, goats were divided into a high-freezability (HF) group with >60% total motility (n = 8) and a low-freezability (LF) group with <45% total motility (n = 8). Sperm and seminal plasma from the HF and LF groups were separated, HF seminal plasma was mixed with LF spermatozoa, LF seminal plasma was mixed with HF sperm, and the products were subjected to a freeze-thaw procedure. Semen from individual goats exhibited differences in freezability. HF semen had higher sperm motility parameters and plasma membrane and acrosome integrity after thawing; this difference could be related to the composition of seminal plasma. Seminal plasma from the HF and LF groups was evaluated using metabolomic analysis, and multivariate statistical analysis revealed a clear separation of metabolic patterns in the seminal plasma of goats with different freezability classifications. Forty-one differential metabolites were identified using the following screening conditions: variable importance in the projection > 1 and 0.05 < P-value < 0.1. Kyoto Encyclopedia of Genes and Genomes pathway analysis revealed significant enrichment of central carbon metabolism in cancer, protein digestion and absorption, aminoacyl-tRNA, and other pathways and significant differences in the abundance of seven differential metabolites, including L-glutamine, L-aspartate, L-arginine, phenylpyruvate, benzoic acid, ketoisocaproic acid, and choline between seminal plasma from the HF and LF groups (P-value < 0.05). These significantly differentially-expressed metabolites may be potential biomarkers for sperm freezability. L-glutamine, L-aspartate, and L-arginine may directly affect sperm freezability. Benzoic acid, ketoisocaproic acid, and choline may regulate sperm freezability by participating in anabolic processes involving phenylalanine, leucine, and phosphatidylcholine in sperm.
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Affiliation(s)
- Bingbing Xu
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Xue Bai
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Jian Zhang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Boyuan Li
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Yanjun Zhang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Rui Su
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Ruijun Wang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Zhiying Wang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Qi Lv
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Jiaxin Zhang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
- *Correspondence: Jiaxin Zhang
| | - Jinquan Li
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Hohhot, China
- Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hohhot, China
- Inner Mongolia Jinlai Animal Husbandry Technology Co., Ltd., Hohhot, China
- Jinquan Li
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Yi J, Li Z. Artificial multi-enzyme cascades for natural product synthesis. Curr Opin Biotechnol 2022; 78:102831. [PMID: 36308987 DOI: 10.1016/j.copbio.2022.102831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/19/2022] [Accepted: 09/30/2022] [Indexed: 12/14/2022]
Abstract
Artificial multi-enzyme cascades bear great potential for offering sustainable synthesis of useful and valuable natural molecules. In the past two years, many new cascades were developed to produce natural alcohols, acids, esters, amino compounds, fatty acid derivatives, alkaloids, terpenoids, terpenes and monosaccharides from natural substrates and simple chemicals, respectively. These artificial cascades were constructed by combining individual enzymes designed using the retro-synthesis strategy and based on the available natural substrates and simple chemicals. While performing the cascades in vivo is often simple and straightforward, in vitro cascades usually require cofactor regeneration that was achieved by introducing one or more cofactor-regeneration modules in one pot. Protein engineering is frequently used to improve the performances of some enzymes in the cascades.
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Affiliation(s)
- Jieran Yi
- 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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Sekar BS, Li X, Li Z. Bioproduction of Natural Phenethyl Acetate, Phenylacetic Acid, Ethyl Phenylacetate, and Phenethyl Phenylacetate from Renewable Feedstock. CHEMSUSCHEM 2022; 15:e202102645. [PMID: 35068056 DOI: 10.1002/cssc.202102645] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/19/2022] [Indexed: 06/14/2023]
Abstract
Natural phenethyl acetate (PEA), phenylacetic acid (PAA), ethyl phenylacetate (Et-PA), and phenethyl phenylacetate (PE-PA) are highly desirable aroma chemicals, but with limited availability and high price. Here, green, sustainable, and efficient bioproduction of these chemicals as natural products from renewable feedstocks was developed. PEA and PAA were synthesized from l-phenylalanine (l-Phe) via novel six- and five-enzyme cascades, respectively. Whole-cell-based cascade biotransformation of 100 mm l-Phe in a two-phase system (aqueous/organic: 1 : 0.5 v/v) containing ethyl oleate or biodiesel as green solvent gave 13.6 g L-1 PEA (83.1 % conv.) and 11.6 g L-1 PAA (87.1 % conv.), respectively. Coupled fermentation and biotransformation approach produced 10.4 g L-1 PEA and 9.2 g L-1 PAA from glucose or glycerol, respectively. The biosynthesized PAA was converted to natural Et-PA and PE-PA by esterification using lipases with ethanol or 2-phenylethanol derived from sugar, affording 2.7 g L-1 Et-PA (83.1 % conv.) and 4.6 g L-1 PE-PA (96.3 % conv.), respectively.
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Affiliation(s)
- Balaji Sundara Sekar
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore
- Synthetic Biology for Clinical and Technological Innovation (SynCTI), Life Sciences Institute, National University of Singapore, 28 Medical Drive, 117456, Singapore, Singapore
| | - Xirui Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore
| | - Zhi Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore
- Synthetic Biology for Clinical and Technological Innovation (SynCTI), Life Sciences Institute, National University of Singapore, 28 Medical Drive, 117456, Singapore, Singapore
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6
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Wang Q, Geng S, Wang L, Wen Z, Sun X, Huang H. Bacterial mandelic acid degradation pathway and its application in biotechnology. J Appl Microbiol 2022; 133:273-286. [PMID: 35294082 DOI: 10.1111/jam.15529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 12/22/2021] [Accepted: 03/09/2022] [Indexed: 11/28/2022]
Abstract
Mandelic acid and its derivatives are an important class of chemical synthetic blocks, which is widely used in drug synthesis and stereochemistry research. In nature, mandelic acid degradation pathway has been widely identified and analyzed as a representative pathway of aromatic compounds degradation. The most studied mandelic acid degradation pathway from Pseudomonas putida consists of mandelate racemase, S-mandelate dehydrogenase, benzoylformate decarboxylase, benzaldehyde dehydrogenase and downstream benzoic acid degradation pathways. Because of the ability to catalyze various reactions of aromatic substrates, pathway enzymes have been widely used in biocatalysis, kinetic resolution, chiral compounds synthesis or construction of new metabolic pathways. In this paper, the physiological significance and the existing range of the mandelic acid degradation pathway were introduced first. Then each of the enzymes in the pathway is reviewed one by one, including the researches on enzymatic properties and the applications in biotechnology as well as efforts that have been made to modify the substrate specificity or improving catalytic activity by enzyme engineering to adapt different applications. The composition of the important metabolic pathway of bacterial mandelic acid degradation pathway as well as the researches and applications of pathway enzymes is summarized in this review for the first time.
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Affiliation(s)
- Qingzhuo Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Qixia District, Nanjing, People's Republic of China
| | - Shanshan Geng
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Qixia District, Nanjing, People's Republic of China
| | - Lingru Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Qixia District, Nanjing, People's Republic of China
| | - Zhiqiang Wen
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Qixia District, Nanjing, People's Republic of China
| | - Xiaoman Sun
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Qixia District, Nanjing, People's Republic of China
| | - He Huang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2# Xuelin Road, Qixia District, Nanjing, People's Republic of China.,College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, People's Republic of China
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7
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Gómez-Álvarez H, Iturbe P, Rivero-Buceta V, Mines P, Bugg TDH, Nogales J, Díaz E. Bioconversion of lignin-derived aromatics into the building block pyridine 2,4-dicarboxylic acid by engineering recombinant Pseudomonas putida strains. BIORESOURCE TECHNOLOGY 2022; 346:126638. [PMID: 34971782 DOI: 10.1016/j.biortech.2021.126638] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
2,4 pyridine dicarboxylic acid (2,4 PDCA) is an analogue of terephthalate, and hence a target chemical in the field of bio-based plastics. Here, Pseudomonas putida KT2440 strains were engineered to efficiently drive the metabolism of lignin-derived monoaromatics towards 2,4 PDCA in a resting cells-based bioprocess that alleviates growth-coupled limitations and allows biocatalysts recycling. Native β-ketoadipate pathway was blocked by replacing protocatechuate 3,4-dioxygenase by the exogenous LigAB extradiol dioxygenase. Overexpression of pcaK encoding a transporter increased 8-fold 2,4 PDCA productivity from protocatechuate, reaching the highest value reported so far (0.58 g L-1h-1). Overexpression of the 4-hydroxybenzoate monooxygenase (pobA) speed up drastically the production of 2,4 PDCA from 4-hydroxybenzoate (0.056 g L-1h-1) or p-coumarate (0.012 g L-1h-1) achieving values 15-fold higher than those reported with Rhodococcus jostii biocatalysts. 2,4 PDCA was also bioproduced by using soda lignin as feedstock, paving the way for future polymeric lignin valorization approaches.
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Affiliation(s)
- Helena Gómez-Álvarez
- Margarita Salas Center for Biological Research, Spanish National Research Council, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Pablo Iturbe
- Margarita Salas Center for Biological Research, Spanish National Research Council, Ramiro de Maeztu 9, 28040 Madrid, Spain; Navarrabiomed, University of Navarra, Irunlarrea 3, 31008 Pamplona, Spain
| | - Virginia Rivero-Buceta
- Margarita Salas Center for Biological Research, Spanish National Research Council, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Paul Mines
- Biome Bioplastics Ltd, North Road, Marchwood, Southampton SO40 4BL, UK
| | - Timothy D H Bugg
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Juan Nogales
- National Centre for Biotechnology, Spanish National Research Council, Darwin 3, 28049 Madrid, Spain; Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), Madrid, Spain
| | - Eduardo Díaz
- Margarita Salas Center for Biological Research, Spanish National Research Council, Ramiro de Maeztu 9, 28040 Madrid, Spain; Interdisciplinary Platform for Sustainable Plastics towards a Circular Economy-Spanish National Research Council (SusPlast-CSIC), Madrid, Spain.
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8
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Microbial synthesis of 4-hydroxybenzoic acid from renewable feedstocks. FOOD CHEMISTRY. MOLECULAR SCIENCES 2021; 3:100059. [PMID: 35415641 PMCID: PMC8991815 DOI: 10.1016/j.fochms.2021.100059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 11/15/2021] [Accepted: 11/27/2021] [Indexed: 01/10/2023]
Abstract
4-Hydroxybenzoic acid (4HBA) and its esterified forms can be used as preservatives in the pharmaceutical and food industries. Here, we reported the establishment of a coenzyme-A (CoA) free multi-enzyme cascade in Escherichia coli to utilize biobased L-tyrosine for efficient synthesis of 4HBA. The multi-enzyme cascade contains L-amino acid deaminase from Proteus mirabilis, hydroxymandelate synthase from Amycolatopsis orientalis, (S)-mandelate dehydrogenase and benzoylformate decarboxylase from Pseudomonas putida, and aldehyde dehydrogenase from Saccharomyces cerevisiae. The whole-cell biocatalysis afforded the synthesis of 128 ± 1 mM of 4HBA (17.7 ± 0.1 g/L) from 150 mM L-tyrosine with > 85% conversion within 96 h. In addition, the artificial enzymatic cascade also allowed the synthesis of benzoic acid from 100 mM L-phenylalanine with a conversion ∼ 90%. In summary, our research offers a sustainable alternative for synthesizing 4HBA and benzoic acid from renewable feedstocks.
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Zhou Y, Wu S, Bornscheuer UT. Recent advances in (chemo)enzymatic cascades for upgrading bio-based resources. Chem Commun (Camb) 2021; 57:10661-10674. [PMID: 34585190 DOI: 10.1039/d1cc04243b] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Developing (chemo)enzymatic cascades is very attractive for green synthesis, because they streamline multistep synthetic processes. In this Feature Article, we have summarized the recent advances in in vitro or whole-cell cascade reactions with a focus on the use of renewable bio-based resources as starting materials. This includes the synthesis of rare sugars (such as ketoses, L-ribulose, D-tagatose, myo-inositol or aminosugars) from readily available carbohydrate sources (cellulose, hemi-cellulose, starch), in vitro enzyme pathways to convert glucose to various biochemicals, cascades to convert 5-hydroxymethylfurfural and furfural obtained from lignin or xylose into novel precursors for polymer synthesis, the syntheses of phenolic compounds, cascade syntheses of aliphatic and highly reduced chemicals from plant oils and fatty acids, upgrading of glycerol or ethanol as well as cascades to transform natural L-amino acids into high-value (chiral) compounds. In several examples these processes have demonstrated their efficiency with respect to high space-time yields and low E-factors enabling mature green chemistry processes. Also, the strengths and limitations are discussed and an outlook is provided for improving the existing and developing new cascades.
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Affiliation(s)
- Yi Zhou
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Street, Wuhan 430070, P. R. China.
| | - Shuke Wu
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Street, Wuhan 430070, P. R. China. .,Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University Greifswald, Felix-Hausdorff-Str. 4, D-17487 Greifswald, Germany.
| | - Uwe T Bornscheuer
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University Greifswald, Felix-Hausdorff-Str. 4, D-17487 Greifswald, Germany.
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Wang Z, Sundara Sekar B, Li Z. Recent advances in artificial enzyme cascades for the production of value-added chemicals. BIORESOURCE TECHNOLOGY 2021; 323:124551. [PMID: 33360113 DOI: 10.1016/j.biortech.2020.124551] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 06/12/2023]
Abstract
Enzyme cascades are efficient tools to perform multi-step synthesis in one-pot in a green and sustainable manner, enabling non-natural synthesis of valuable chemicals from easily available substrates by artificially combining two or more enzymes. Bioproduction of many high-value chemicals such as chiral and highly functionalised molecules have been achieved by developing new enzyme cascades. This review summarizes recent advances on engineering and application of enzyme cascades to produce high-value chemicals (alcohols, aldehydes, ketones, amines, carboxylic acids, etc) from simple starting materials. While 2-step enzyme cascades are developed for versatile enantioselective synthesis, multi-step enzyme cascades are engineered to functionalise basic chemicals, such as styrenes, cyclic alkanes, and aromatic compounds. New cascade reactions have also been developed for producing valuable chemicals from bio-based substrates, such as ʟ-phenylalanine, and renewable feedstocks such as glucose and glycerol. The challenges in current process and future outlooks in the development of enzyme cascades are also addressed.
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Affiliation(s)
- Zilong Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
| | - Balaji Sundara Sekar
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
| | - Zhi Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore.
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Sekar BS, Mao J, Lukito BR, Wang Z, Li Z. Bioproduction of Enantiopure (
R
)‐ and (
S
)‐2‐Phenylglycinols from Styrenes and Renewable Feedstocks. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001322] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Balaji Sundara Sekar
- Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive Singapore 117585 Singapore
- Synthetic Biology for Clinical and Technological Innovation (SynCTI) Life Sciences Institute National University of Singapore 28 Medical Drive Singapore 117456 Singapore
| | - Jiwei Mao
- Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive Singapore 117585 Singapore
- Synthetic Biology for Clinical and Technological Innovation (SynCTI) Life Sciences Institute National University of Singapore 28 Medical Drive Singapore 117456 Singapore
| | - Benedict Ryan Lukito
- Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive Singapore 117585 Singapore
| | - Zilong Wang
- Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive Singapore 117585 Singapore
- Synthetic Biology for Clinical and Technological Innovation (SynCTI) Life Sciences Institute National University of Singapore 28 Medical Drive Singapore 117456 Singapore
| | - Zhi Li
- Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive Singapore 117585 Singapore
- Synthetic Biology for Clinical and Technological Innovation (SynCTI) Life Sciences Institute National University of Singapore 28 Medical Drive Singapore 117456 Singapore
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12
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Luo ZW, Lee SY. Metabolic engineering of Escherichia coli for the production of benzoic acid from glucose. Metab Eng 2020; 62:298-311. [DOI: 10.1016/j.ymben.2020.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/25/2020] [Accepted: 10/05/2020] [Indexed: 12/19/2022]
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13
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Liu L, He W, Fang Z, Yang Z, Guo K, Wang Z. From Core–Shell to Yolk–Shell: Improved Catalytic Performance toward CoFe 2O 4@ Hollow@ Mesoporous TiO 2 toward Selective Oxidation of Styrene. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03884] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Liang Liu
- College of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
| | - Wei He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Zhao Yang
- College of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Zhixiang Wang
- College of Engineering, China Pharmaceutical University, Nanjing 211198, P. R. China
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