1
|
Fan F, Liu C, Cao J, Lyu C, Qiu S, Hu S, Sun T, Mei J, Wang H, Li Y, Zhao W, Mei L, Huang J. Turning thermostability of Aspergillus terreus (R)-selective transaminase At-ATA by synthetic shuffling. J Biotechnol 2023; 364:66-74. [PMID: 36708998 DOI: 10.1016/j.jbiotec.2023.01.014] [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: 11/08/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/27/2023]
Abstract
As versatile and green biocatalysts for the asymmetric amination of ketones, the insufficient thermostability of transaminases always limits its broad application in the pharmaceutical and fine chemical industries. Here, synthetic shuffling technology was used to enhance stability of (R)-selective transaminase from Aspergillus terreus. The results showed that 30 out of 5000 mutants had improved thermostability by color-based screening method, among which mutants with residual enzyme activity higher than 50% at 45 °C for 10 min were selected for further analysis. Especially, the half-inactivation temperature (T5010), half-life (t1/2), and melting temperature (Tm) of the best mutant M14 (M280C-H210N-M150C-F115L) were 13.7 °C, 165.8 min, and 13.9 °C higher than that of the wild type (WT), respectively. M14 also exhibited a significant biocatalytic efficiency toward acetophenone and 1-acetylnaphthalene, the yield of which were 265.6% and 117.5% higher than WT, respectively. Based on molecular dynamics simulation, improved catalytic efficiency of M14 could be attributed to its increased hydrogen bonds interaction around the mutation sites. Additionally, the introduction of disulfide bond combined with above mutations has a synergistic effect on the improved protein thermostability.
Collapse
Affiliation(s)
- Fangfang Fan
- Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Chunyan Liu
- Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Jiaren Cao
- Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Changjiang Lyu
- Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Shuai Qiu
- Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Sheng Hu
- School of Biological and Chemical Engineering, Ningbo Tech University, Ningbo 315100, China
| | - Tingting Sun
- Department of Physics, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Jiaqi Mei
- Hangzhou Huadong Medicine Group Co. Ltd, Hangzhou 310011, China
| | - Hongpeng Wang
- Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Ye Li
- Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Weirui Zhao
- School of Biological and Chemical Engineering, Ningbo Tech University, Ningbo 315100, China
| | - Lehe Mei
- School of Biological and Chemical Engineering, Ningbo Tech University, Ningbo 315100, China; Jinhua Advanced Research Institute, Jinhua 321019, China; College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Jun Huang
- Key Laboratory of Chemical and Biological Processing Technology for Farm Products of Zhejiang Province, Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
| |
Collapse
|
2
|
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.
Collapse
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.)
| |
Collapse
|
3
|
Gal CA, Barabás LE, Varga A, Csuka P, Bencze LC, Toșa MI, Poppe L, Paizs C. How to identify and characterize novel transaminases? Two novel transaminases with opposite enantioselectivity for the synthesis of optically active amines. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
4
|
Ming H, Yuan B, Qu G, Sun Z. Engineering the activity of amine dehydrogenase in the asymmetric reductive amination of hydroxyl ketones. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00391k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An engineered AmDH derived from a leucine dehydrogenase was used as the starting enzyme to improve its activity in the synthesis of (R)-3-amino-1-butanol. Preparative-scale synthesis of the (R)-product (90% yield, >99%) was performed on a gram-scale.
Collapse
Affiliation(s)
- Hui Ming
- Department of Life Sciences and Medicine, University of Science and technology of China, Hefei 230022, China
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
| | - Bo Yuan
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
- National Technology Innovation Center of Synthetic Biology, Tianjin 300308, China
| | - Ge Qu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
- National Technology Innovation Center of Synthetic Biology, Tianjin 300308, China
| | - Zhoutong Sun
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
- National Technology Innovation Center of Synthetic Biology, Tianjin 300308, China
| |
Collapse
|
5
|
Improving the catalytic thermostability of Bacillus altitudinis W3 ω-transaminase by proline substitutions. 3 Biotech 2020; 10:323. [PMID: 32656056 DOI: 10.1007/s13205-020-02321-2] [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: 03/26/2020] [Accepted: 06/24/2020] [Indexed: 01/10/2023] Open
Abstract
As a green biocatalyst, transaminase with high thermostability can be better employed to synthesize many pharmaceutical intermediates in industry. To improve the thermostability of (R)-selective amine transaminase from Bacillus altitudinis W3, related mutation sites were determined by multiple amino acid sequence alignment between wild-type ω-transaminase and four potential thermophilic ω-transaminases, followed by replacement of the related amino acid residues with proline by site-directed mutagenesis. Three stabilized mutants (D192P, T237P, and D192P/T237P) showing the highest stability were obtained and used for further analysis. Comparison with the wild-type enzyme revealed that the double mutant D192P/T237P exhibited the largest shift in thermostability, with a 2.5-fold improvement of t 1/2 at 40 °C, and a 6.3 °C increase in T 50 15, and a 5 °C higher optimal catalytic temperature. Additionally, this mutant exhibited an increase in catalytic efficiency (k cat/K m) relative to the wild-type enzyme. Modeling analysis indicated that the improved thermostability of the mutants could be associated with newly formed hydrophobic interactions and hydrogen bonds. This study shown that proline substitutions guided by sequence alignment to improve the thermostability of (R)-selective amine transaminase was effective and this method can also be used to engineering other enzymes.
Collapse
|
6
|
Gao X, Zhang X, Zhu N, Mou Y, Zhang H, Liu X, Wei P. Reshaping the substrate binding region of (R)-selective ω-transaminase for asymmetric synthesis of (R)-3-amino-1-butanol. Appl Microbiol Biotechnol 2020; 104:3959-3969. [PMID: 32185434 DOI: 10.1007/s00253-020-10539-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 03/02/2020] [Accepted: 03/11/2020] [Indexed: 01/27/2023]
Abstract
(R)-Selective ω-transaminase (ω-TA) is a key enzyme for the asymmetric reductive amination of carbonyl compounds to produce chiral amines which are essential parts of many therapeutic compounds. However, its practical industrial applications are hindered by the low catalytic efficiency and poor thermostability of naturally occurring enzymes. In this work, we report the molecular modification of (R)-selective ω-TA from Aspergillus terreus (AtTA) to allow asymmetric reductive amination of 4-hydroxy-2-butanone, producing (R)-3-amino-1-butanol. Based on substrate docking analysis, 4 residues in the substrate tunnel and binding pocket of AtTA were selected as mutation hotspots. The screening procedure was facilitated by the construction of a "small-intelligent" library and the use of thin-layer chromatography for preliminary screening. The resulting mutant AtTA-M5 exhibited a 9.6-fold higher kcat/Km value and 9.4 °C higher [Formula: see text] than that of wild-type AtTA. Furthermore, the conversion of 20 and 50 g L-1 4-hydroxy-2-butanone by AtTA-M5 reached 90.8% and 79.1%, suggesting significant potential for production of (R)-3-amino-1-butanol. Under the same conditions, wild-type AtTA achieved less than 5% conversion. Moreover, the key mutation (S215P in AtTA) was validated in 7 other (R)-selective ω-TAs, indicating its general applicability in improving the catalytic efficiency of homologous (R)-selective ω-TAs.
Collapse
Affiliation(s)
- Xinxing Gao
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, China.
| | - Xin Zhang
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, China
| | - Nianqing Zhu
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, China
| | - Yi Mou
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, China
| | - Hailing Zhang
- Department of Biological Engineering, College of Life Science, Yantai University, Yantai, 264005, Shandong, China
| | - Xin Liu
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, China
| | - Pinghe Wei
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, 225300, Jiangsu, China
| |
Collapse
|
7
|
Kelly SA, Magill DJ, Megaw J, Skvortsov T, Allers T, McGrath JW, Allen CCR, Moody TS, Gilmore BF. Characterisation of a solvent-tolerant haloarchaeal (R)-selective transaminase isolated from a Triassic period salt mine. Appl Microbiol Biotechnol 2019; 103:5727-5737. [PMID: 31123770 PMCID: PMC6597733 DOI: 10.1007/s00253-019-09806-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 03/26/2019] [Accepted: 03/29/2019] [Indexed: 12/11/2022]
Abstract
Transaminase enzymes (TAms) are becoming increasingly valuable in the chemist’s toolbox as a biocatalytic route to chiral amines. Despite high profile successes, the lack of (R)-selective TAms and robustness under harsh industrial conditions continue to prove problematic. Herein, we report the isolation of the first haloarchaeal TAm (BC61-TAm) to be characterised for the purposes of pharmaceutical biocatalysis. BC61-TAm is an (R)-selective enzyme, cloned from an extremely halophilic archaeon, isolated from a Triassic period salt mine. Produced using a Haloferax volcanii–based expression model, the resulting protein displays a classic halophilic activity profile, as well as thermotolerance (optimum 50 °C) and organic solvent tolerance. Molecular modelling predicts the putative active site residues of haloarchaeal TAms, with molecular dynamics simulations providing insights on the basis of BC61-TAm’s organic solvent tolerance. These results represent an exciting advance in the study of transaminases from extremophiles, providing a possible scaffold for future discovery of biocatalytic enzymes with robust properties.
Collapse
Affiliation(s)
| | - Damian J Magill
- School of Biological Sciences, Queen's University Belfast, Belfast, UK
| | - Julianne Megaw
- School of Pharmacy, Queen's University Belfast, Belfast, UK
| | | | - Thorsten Allers
- School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, UK
| | - John W McGrath
- School of Biological Sciences, Queen's University Belfast, Belfast, UK
| | | | - Thomas S Moody
- Almac, Department of Biocatalysis & Isotope Chemistry, 20 Seagoe Industrial Estate, Craigavon, UK
- Arran Chemical Company Limited, Unit 1 Monksland Industrial Estate, Athlone, Co. Roscommon, Ireland
| | | |
Collapse
|
8
|
Efficient biosynthesis of (R)-3-amino-1-butanol by a novel (R)-selective transaminase from Actinobacteria sp. J Biotechnol 2019; 295:49-54. [PMID: 30853639 DOI: 10.1016/j.jbiotec.2019.02.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 02/17/2019] [Accepted: 02/18/2019] [Indexed: 11/23/2022]
Abstract
(R)-3-amino-1-butanol is a key intermediate of Dolutegravir for the treatment of HIV/AIDS and its green and efficient biosynthesis has attracted a great deal of attention. Transaminases are currently used as promising biocatalyst for the synthesis of chiral amines. However, many transaminases have (S)-specificity and (R)-selective transaminases were less exploited and studied, making the production of (R)-amines remain challenging. In this study, a novel transaminase from Actinobacteria sp. (As-TA) was obtained and applied for the biosynthesis of (R)-3-amino-1-butanol by transferring the amino group from isopropylamine to 4-hydroxy-2-butanone. After optimization of the reaction condition and using a substrate fed-batch strategy, the conversion of 100, 200, 300, 400 and 500 mM 4-hydroxy-2-butanone reached 100%, 94.9%, 86.1%, 76.1% and 70.9%, respectively. (R)-3-amino-1-butanol with a maximum yield of 29.6 g/L and 99.9% e.e. value was obtained. This was the first time demonstrating the successful biosynthesis of (R)-3-amino-1-butanol with transaminase as biocatalyst and the obtained As-TA enriched the enzyme pool of transaminase with (R)-specificity.
Collapse
|
9
|
Kim GH, Jeon H, Khobragade TP, Patil MD, Sung S, Yoon S, Won Y, Choi IS, Yun H. Enzymatic synthesis of sitagliptin intermediate using a novel ω-transaminase. Enzyme Microb Technol 2019; 120:52-60. [DOI: 10.1016/j.enzmictec.2018.10.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 09/17/2018] [Accepted: 10/05/2018] [Indexed: 01/10/2023]
|