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Chang F, Wang Y, Zhang J, Tu T, Luo H, Huang H, Bai Y, Qin X, Wang Y, Yao B, Wang Y, Wang X. Efficient production of γ-aminobutyric acid using engineered Escherichia coli whole-cell catalyst. Enzyme Microb Technol 2024; 174:110379. [PMID: 38103484 DOI: 10.1016/j.enzmictec.2023.110379] [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: 10/31/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
γ-Aminobutyric acid (GABA) has been widely used in the food, feed, pharmaceutical, and chemical industry fields. Previously, we developed a whole-cell catalyst capable of converting L-glutamate (L-Glu) into GABA by overexpressing the glutamate decarboxylase gene (gadz11) from Bacillus sp. Z11 in Escherichia coli BL21(DE3). However, to enhance cell permeability, a freeze-thaw treatment is required, and to enhance GADZ11 activity, pyridoxal 5'-phosphate (PLP) must be added to the reaction system. The aim of this study is to provide a more efficient approach for GABA production by engineering the recombinant E. coli above. First, the inducible expression conditions of the gadz11 in E. coli were optimized to 37 °C for 6 h. Next, an ideal engineered strain was produced via increasing cell permeability by overexpressing sulA and eliminating PLP dependence by constructing a self-sufficient system. Furthermore, an efficient whole-cell biocatalytic process was optimized. The optimal substrate concentration, cell density, and reaction temperature were 1.0 mol/L (the molecular ratio of L-Glu to L-monosodium glutamate (L-MSG) was 4:1), 15 and 37 °C, respectively. Finally, a whole-cell bioconversion procedure was performed in a 3-L bioreactor under optimal conditions. The strain could be reused for at least two cycles with GABA yield, productivity and conversion ratio of 206.2 g/L, 117.8 g/L/h and 100.0%, respectively. This is currently the highest GABA productivity from a mixture of L-Glu and L-MSG reported without the addition of cofactors or additional treatment of cells. This work demonstrates that the novel engineered E. coli strain has the potential for application in large-scale industrial GABA production.
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Affiliation(s)
- Fangfang Chang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yuheng Wang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jie Zhang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Tao Tu
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Huiying Luo
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Huoqing Huang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yingguo Bai
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xing Qin
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yaru Wang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Bin Yao
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yuan Wang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Xiaolu Wang
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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2
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Comparison of Four Immobilization Methods for Different Transaminases. Catalysts 2023. [DOI: 10.3390/catal13020300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Biocatalytic syntheses often require unfavorable conditions, which can adversely affect enzyme stability. Consequently, improving the stability of biocatalysts is needed, and this is often achieved by immobilization. In this study, we aimed to compare the stability of soluble and immobilized transaminases from different species. A cysteine in a consensus sequence was converted to a single aldehyde by the formylglycine-generating enzyme for directed single-point attachment to amine beads. This immobilization was compared to cross-linked enzyme aggregates (CLEAs) and multipoint attachments to glutaraldehyde-functionalized amine- and epoxy-beads. Subsequently, the reactivity and stability (i.e., thermal, storage, and solvent stability) of all soluble and immobilized transaminases were analyzed and compared under different conditions. The effect of immobilization was highly dependent on the type of enzyme, the immobilization strategy, and the application itself, with no superior immobilization technique identified. Immobilization of HAGA-beads often resulted in the highest activities of up to 62 U/g beads, and amine beads were best for the hexameric transaminase from Luminiphilus syltensis. Furthermore, the immobilization of transaminases enabled its reusability for at least 10 cycles, while maintaining full or high activity. Upscaled kinetic resolutions (partially performed in a SpinChemTM reactor) resulted in a high conversion, maintained enantioselectivity, and high product yields, demonstrating their applicability.
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3
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Rajendran DS, Venkataraman S, Kumar PS, Rangasamy G, Bhattacharya T, Nguyen Vo DV, Vaithyanathan VK, Cabana H, Kumar VV. Coimmobilized enzymes as versatile biocatalytic tools for biomass valorization and remediation of environmental contaminants - A review. ENVIRONMENTAL RESEARCH 2022; 214:114012. [PMID: 35952747 DOI: 10.1016/j.envres.2022.114012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 07/20/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
Due to stringent regulatory norms, waste processing faces confrontations and challenges in adapting technology for effective management through a convenient and economical system. At the global level, attempts are underway to achieve a green and sustainable treatment for the valorization of lignocellulosic biomass as well as organic contaminants in wastewater. Enzymatic treatment in the environmental aspect thrived on being the promising rapid strategy that appeased the aforementioned predicament. On that account, coimmobilization of various enzymes on single support enhances the catalytic activity ensuing operational stability with industrial applications. This review pivoted towards the coimmobilization of enzymes on diverse supports and their applications in biomass conversion to industrial value-added products and removal of contaminants in wastewater. The limelight of this study chronicles the unique breakthroughs in biotechnology for the production of reusable biocatalysts, which inculcating various enzymes towards the scope of environment application.
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Affiliation(s)
- Devi Sri Rajendran
- Integrated Bioprocess Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Chennai - 603203, India
| | - Swethaa Venkataraman
- Integrated Bioprocess Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Chennai - 603203, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam- 603 110, Chennai, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam- 603 110, Chennai, India.
| | - Gayathri Rangasamy
- University Centre for Research and Development & Department of Civil Engineering, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India
| | - Trishita Bhattacharya
- Integrated Bioprocess Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Chennai - 603203, India
| | - Dai-Viet Nguyen Vo
- Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.
| | - Vasanth Kumar Vaithyanathan
- University of Sherbrooke Water Research Group, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, 2500 Boul. de L'Université, Sherbrooke, Quebec, J1K 2R1, Canada
| | - Hubert Cabana
- University of Sherbrooke Water Research Group, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, 2500 Boul. de L'Université, Sherbrooke, Quebec, J1K 2R1, Canada
| | - Vaidyanathan Vinoth Kumar
- Integrated Bioprocess Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Chennai - 603203, India; University of Sherbrooke Water Research Group, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, 2500 Boul. de L'Université, Sherbrooke, Quebec, J1K 2R1, Canada.
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4
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Ma T, Kong W, Liu Y, Zhao H, Ouyang Y, Gao J, Zhou L, Jiang Y. Asymmetric Hydrogenation of C = C Bonds in a SpinChem Reactor by Immobilized Old Yellow Enzyme and Glucose Dehydrogenase. Appl Biochem Biotechnol 2022; 194:4999-5016. [PMID: 35687305 DOI: 10.1007/s12010-022-03991-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2022] [Indexed: 11/27/2022]
Abstract
The application of immobilized enzymes in pharmaceutical and bulk chemical production has been shown to be economically viable. We demonstrate the exceptional performance of a method that immobilizes the old yellow enzyme YqjM and glucose dehydrogenase (GDH) on resin for the asymmetric hydrogenation (AH) of C = C bonds in a SpinChem reactor. When immobilized YqjM and GDH are reused 10 times, the conversion of 2-methylcyclopentenone could reach 78%. Which is because the rotor of the SpinChem reactor effectively reduces catalyst damage caused by shear force in the reaction system. When the substrate concentration is 175 mM, an 87% conversion of 2-methylcyclopentenone is obtained. The method is also observed to perform well for the AH of C = C bonds in other unsaturated carbonyl compounds with the SpinChem reactor. Thus, this method has great potential for application in the enzymatic production of chiral compounds.
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Affiliation(s)
- Teng Ma
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, People's Republic of China.,Tianjin Key Laboratory of Chemical Process Safety, Hebei University of Technology, Tianjin, 300130, People's Republic of China
| | - Weixi Kong
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, People's Republic of China.,Tianjin Key Laboratory of Chemical Process Safety, Hebei University of Technology, Tianjin, 300130, People's Republic of China
| | - Yunting Liu
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, People's Republic of China.,Tianjin Key Laboratory of Chemical Process Safety, Hebei University of Technology, Tianjin, 300130, People's Republic of China
| | - Hao Zhao
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, People's Republic of China.,Tianjin Key Laboratory of Chemical Process Safety, Hebei University of Technology, Tianjin, 300130, People's Republic of China
| | - Yaping Ouyang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, People's Republic of China.,Tianjin Key Laboratory of Chemical Process Safety, Hebei University of Technology, Tianjin, 300130, People's Republic of China
| | - Jing Gao
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, People's Republic of China.,Tianjin Key Laboratory of Chemical Process Safety, Hebei University of Technology, Tianjin, 300130, People's Republic of China
| | - Liya Zhou
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, People's Republic of China. .,Tianjin Key Laboratory of Chemical Process Safety, Hebei University of Technology, Tianjin, 300130, People's Republic of China.
| | - Yanjun Jiang
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, People's Republic of China. .,Tianjin Key Laboratory of Chemical Process Safety, Hebei University of Technology, Tianjin, 300130, People's Republic of China.
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Engineering Novel ( R)-Selective Transaminase for Efficient Symmetric Synthesis of d-Alanine. Appl Environ Microbiol 2022; 88:e0006222. [PMID: 35465694 DOI: 10.1128/aem.00062-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
d-Alanine belongs to nonessential amino acids that have diverse applications in the fields of food and health care. (R)-transaminase [(R)-TA]-catalyzed asymmetric amination of pyruvate is a feasible alternative for the synthesis of d-alanine, but low catalytic efficiency and thermostability limit enzymatic utilization. In this work, several potential (R)-TAs were discovered using NCBI database mining synchronously with enzymatic structure-function analysis, among which Capronia epimyces TA (CeTA) showed the highest activity for amination of pyruvate using (R)-α-methylbenzylamine as the donor. Furthermore, enzymatic residues surrounding a large catalysis pocket were subjected to saturation and combinatorial mutagenesis, and positive mutant F113T showed dramatic improvement in activity and thermostability. Molecular modeling indicated that the substitution of phenylalanine with threonine afforded alleviation of steric hindrance in the pocket and induced formation of additional hydrogen bonds with neighboring residues. Finally, using recombinant cells containing F113T as a biocatalyst, the conversion yield of amination of 100 mM pyruvate to d-alanine achieved up to 95.2%, which seemed to be the highest level in the literature regarding synthesis of d-alanine using TAs. The inherent characteristics rendered CeTA F113T a promising platform for efficient preparation of d-alanine operating with high productivity. IMPORTANCE d-Alanine is an important compound with many valuable applications. Its asymmetric synthesis employing (R)-ω-TA is considered an attractive choice. According to the stereoselectivity, ω-TAs have either (R)- or (S)-enantiopreference. There has been a variety of literature regarding screening, characterizing, and molecular modification of (S)-ω-TAs; in contrast, the research about (R)-ω-TA has lagged behind. In this work, we identify several (R)-ω-TAs and succeeded in creating mutant F113T, which showed not only better efficiency toward pyruvate but also higher thermostability compared with the original enzyme. The obtained original enzymes and positive mutants displayed important application value for pushing symmetric synthesis of d-alanine to a higher level.
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Creation of a robust and R-selective ω-amine transaminase for the asymmetric synthesis of sitagliptin intermediate on a kilogram scale. Enzyme Microb Technol 2020; 141:109655. [PMID: 33051014 DOI: 10.1016/j.enzmictec.2020.109655] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/23/2020] [Accepted: 09/01/2020] [Indexed: 12/17/2022]
Abstract
The creation of an R-selective ω-amine transaminase (ω-ATA) as biocatalyst is crucial for the asymmetric amination of prochiral ketones to produce sitagliptin intermediates because rare ω-ATAs are R-selective in nature and most of them suffer from poor stability and low activity toward bulky prochiral ketones. Here, the gene of an R-selective ω-ATA was cloned from Arthrobacter cumminsii ZJUT212 (AcATA) and expressed in Escherichia coli. The best variants (M1 + M122H and M1+T134 G) were obtained using a semi-rational protein design after screening. These variants not only exhibited improved activity and substrate affinity but also enhanced stability in aqueous phase containing 20 % dimethyl sulfoxide. The conversion of asymmetric amination on 50 g/L pro-sitagliptin ketone PTfpB (1-[1-piperidinyl]-4-[2,4,5-trifluorophenyl]-1,3-butanedione) achieved 92 %, with an extremely high e.e. of >99 %, using 2 gDCW/L E. coli cells harboring M1 + M122H as biocatalyst. In the kilogram-scale experiment, approximately 40 kg of (R)-APTfpB (e.e. >99 %) was produced within 30 h when 50 kg PTfpB was used as the substrate. Furthermore, the space-time yield reached ≈32 g/(L·d).
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7
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Velasco-Lozano S, Jackson E, Ripoll M, López-Gallego F, Betancor L. Stabilization of ω-transaminase from Pseudomonas fluorescens by immobilization techniques. Int J Biol Macromol 2020; 164:4318-4328. [PMID: 32898544 DOI: 10.1016/j.ijbiomac.2020.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 10/23/2022]
Abstract
Transaminases are a class of enzymes with promising applications for the preparation and resolution of a vast diversity of valued amines. Their poor operational stability has fueled many investigations on its stabilization due to their biotechnological relevance. In this work, we screened the stabilization of the tetrameric ω-transaminase from Pseudomonas fluorescens (PfωTA) through both carrier-bound and carrier-free immobilization techniques. The best heterogeneous biocatalyst was the PfωTA immobilized as cross-linked enzyme aggregates (PfωTA-CLEA) which resulted after studying different parameters as the precipitant, additives and glutaraldehyde concentrations. The best conditions for maximum recovered activity (29 %) and maximum thermostability at 60 ºC and 70 ºC (100 % and 71 % residual activity after 1 h, respectively) were achieved by enzyme precipitation with 90% acetone or ethanol, in presence of BSA (100 mg/mL) and employing glutaraldehyde (100 mM) as cross-linker. Studies on different conditions for PfωTA-CLEA preparation yielded a biocatalyst that exhibited 31 and 4.6 times enhanced thermal stability at 60 °C and 70 °C, respectively, compared to its soluble counterpart. The PfωTA-CLEA was successfully used in the bioamination of 4-hydroxybenzaldehyde to 4-hydroxybenzylamine. To the best of our knowledge, this is the first report describing a transaminase cross-linked enzyme aggregates as immobilization strategy to generate a biocatalyst with outstanding thermostability.
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Affiliation(s)
- Susana Velasco-Lozano
- Catálisis Heterogénea en Síntesis Orgánicas Selectivas, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH-CSIC), University of Zaragoza, Pedro Cerbuna, 12, 50009 Zaragoza, Spain; Heterogeneous Biocatalysis Laboratory, CICbiomaGUNE Basque Research and Technology Alliance (BRTA), Paseo de Miramón, 182, 20014 Donostia-San Sebastián, Spain.
| | - Erienne Jackson
- Laboratorio de Biotecnología, Universidad ORT Uruguay, Cuareim 1441, 11100 Montevideo, Uruguay
| | - Magdalena Ripoll
- Laboratorio de Biotecnología, Universidad ORT Uruguay, Cuareim 1441, 11100 Montevideo, Uruguay
| | - Fernando López-Gallego
- Catálisis Heterogénea en Síntesis Orgánicas Selectivas, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH-CSIC), University of Zaragoza, Pedro Cerbuna, 12, 50009 Zaragoza, Spain; Heterogeneous Biocatalysis Laboratory, CICbiomaGUNE Basque Research and Technology Alliance (BRTA), Paseo de Miramón, 182, 20014 Donostia-San Sebastián, Spain; IKERBASQUE, Basque Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain
| | - Lorena Betancor
- Laboratorio de Biotecnología, Universidad ORT Uruguay, Cuareim 1441, 11100 Montevideo, Uruguay.
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Han H, Xu B, Zeng W, Zhou J. Regulating the biosynthesis of pyridoxal 5'-phosphate with riboswitch to enhance L-DOPA production by Escherichia coli whole-cell biotransformation. J Biotechnol 2020; 321:68-77. [DOI: 10.1016/j.jbiotec.2020.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 05/17/2020] [Accepted: 05/18/2020] [Indexed: 02/06/2023]
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9
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Covalent immobilization of recombinant Citrobacter koseri transaminase onto epoxy resins for consecutive asymmetric synthesis of L-phosphinothricin. Bioprocess Biosyst Eng 2020; 43:1599-1607. [DOI: 10.1007/s00449-020-02351-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 04/11/2020] [Indexed: 12/16/2022]
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Semproli R, Vaccaro G, Ferrandi EE, Vanoni M, Bavaro T, Marrubini G, Annunziata F, Conti P, Speranza G, Monti D, Tamborini L, Ubiali D. Use of Immobilized Amine Transaminase from
Vibrio fluvialis
under Flow Conditions for the Synthesis of (
S
)‐1‐(5‐Fluoropyrimidin‐2‐yl)‐ethanamine. ChemCatChem 2020. [DOI: 10.1002/cctc.201902080] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Riccardo Semproli
- Department of Drug SciencesUniversity of Pavia Viale Taramelli 12 Pavia I-27100 Italy
| | - Gianmarco Vaccaro
- Department of Drug SciencesUniversity of Pavia Viale Taramelli 12 Pavia I-27100 Italy
- Department of Pharmaceutical SciencesUniversity of Milano Via Mangiagalli 25 Milano I-20133 Italy
| | - Erica E. Ferrandi
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC) - CNR Via Bianco 9 Milano I-20131 Italy
| | - Marta Vanoni
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC) - CNR Via Bianco 9 Milano I-20131 Italy
| | - Teodora Bavaro
- Department of Drug SciencesUniversity of Pavia Viale Taramelli 12 Pavia I-27100 Italy
| | - Giorgio Marrubini
- Department of Drug SciencesUniversity of Pavia Viale Taramelli 12 Pavia I-27100 Italy
| | - Francesca Annunziata
- Department of Pharmaceutical SciencesUniversity of Milano Via Mangiagalli 25 Milano I-20133 Italy
| | - Paola Conti
- Department of Pharmaceutical SciencesUniversity of Milano Via Mangiagalli 25 Milano I-20133 Italy
| | - Giovanna Speranza
- Department of ChemistryUniversity of Milano Via Golgi 19 Milano I-20133 Italy
| | - Daniela Monti
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC) - CNR Via Bianco 9 Milano I-20131 Italy
| | - Lucia Tamborini
- Department of Pharmaceutical SciencesUniversity of Milano Via Mangiagalli 25 Milano I-20133 Italy
| | - Daniela Ubiali
- Department of Drug SciencesUniversity of Pavia Viale Taramelli 12 Pavia I-27100 Italy
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Asymmetric synthesis of tert-butyl (3R,5S)-6-chloro-3,5-dihydroxyhexanoate using a self-sufficient biocatalyst based on carbonyl reductase and cofactor co-immobilization. Bioprocess Biosyst Eng 2019; 43:21-31. [PMID: 31542820 DOI: 10.1007/s00449-019-02201-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 07/15/2019] [Accepted: 08/19/2019] [Indexed: 02/07/2023]
Abstract
tert-Butyl (3R,5S)-6-chloro-3,5-dihydroxyhexanoate [(3R,5S)-CDHH] is the key chiral intermediate to synthesize the side chain of the lipid-lowering drug rosuvastatin. Carbonyl reductases showed excellent activity for the biosynthesis of (3R,5S)-CDHH. The requirement of cofactor NADH/NADPH leads to high cost for the industrial application of carbonyl reductases. In this study, a self-sufficient biocatalyst based on carbonyl reductase and NADP+ co-immobilization strategy was developed on an amino resin carrier LX-1000HAA (SCR-NADP+@LX-1000HAA). The self-sufficient biocatalyst achieved in situ cofactor regeneration and showed the activity recovery of 77.93% and the specific activity of 70.45 U/g. Asymmetric synthesis of (3R,5S)-CDHH using SCR-NADP+@LX-1000HAA showed high enantioselectivity (> 99% e.e.) and yield (98.54%). Batch reactions were performed for ten cycles without extra addition of NADP+, and the total yield of (3R,5S)-CDHH achieved at 10.56 g/g biocatalyst. The present work demonstrated the potential of the self-sufficient biocatalyst for the asymmetric biosynthesis of rosuvastatin intermediate.
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