1
|
Yuan L, Qin YL, Zou ZC, Appiah B, Huang H, Yang ZH, Qun C. Enhancing intracellular NADPH bioavailability through improving pentose phosphate pathway flux and its application in biocatalysis asymmetric reduction reaction. J Biosci Bioeng 2022; 134:528-533. [PMID: 36224065 DOI: 10.1016/j.jbiosc.2022.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/27/2022] [Accepted: 08/29/2022] [Indexed: 11/17/2022]
Abstract
The intracellular NAD(P)H insufficiency is the key factor which limits the reduced product (such as chiral alcohols) synthesis by whole cell biocatalysis or microbial cell factory. In this paper, we reported a novel solution to increase NADPH supply through strengthening the pentose phosphate pathway (PPP) flux with overexpression of extra zwf (gene for glucose 6-phosphatedehydrogenase) and glk (gene for glucokinase) by recombinant Escherichia coli BL21(DE3)/pETDuet-1-glk-zwf and pET28a-bccr containing a carbonyl reductase gene bccr. The amount of intracellular NADPH was significantly increased from 150.3 μmol/L to 681.8 μmol/L after strengthening the PPP flux, which was 4.5-fold to that of the control. It was applied to improve the asymmetric reduction of 4-chloroacetoacetate to ethyl S-4-chloro-3-hydroxybutylate catalyzed by the BcCR, which increased the reaction yield 2.8-fold to the control. This strategy provides a new way to increase NADPH supply in E. coli cell factories.
Collapse
Affiliation(s)
- Lin Yuan
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Yan-Li Qin
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Zhi-Cheng Zou
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Bright Appiah
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Hao Huang
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Zhong-Hua Yang
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, Wuhan University of Science and Technology, Wuhan 430081, China.
| | - Can Qun
- Division of Chemical Metrology and Analytical Science, National Institute of Metrology, Beijing 100029, China
| |
Collapse
|
2
|
Li Y, Bai Y, Fan TP, Zheng X, Cai Y. Characterization of a putative tropinone reductase from Tarenaya hassleriana with a broad substrate specificity. Biotechnol Appl Biochem 2022; 69:2530-2539. [PMID: 34902878 DOI: 10.1002/bab.2302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 12/07/2021] [Indexed: 12/27/2022]
Abstract
A novel short-chain alcohol dehydrogenase from Tarenaya hassleriana labeled as putative tropinone reductase was heterologously expressed in Escherichia coli. Purified recombinant protein had molecular weight of approximately 30 kDa on 12% sodium dodecyl sulfate-polyacrylamide gel electrophoresis. T. hassleriana tropinone reductase-like enzyme (ThTRL) had not detected oxidative activity. The optimum pH for enzyme activity of ThTRL was weakly acidic (pH 5.0). 50°C was the optimum temperature for ThTRL. The highest catalytic efficiency and substrate affinity for recombinant ThTRL were observed with (+)-camphorquinone (kcat /Km = 814.3 s-1 mM-1 , Km = 44.25 μM). ThTRL exhibited a broad substrate specificity and reduced various carbonyl compounds, including small lipophilic aldehydes and ketones, terpene ketones, and their structural analogs.
Collapse
Affiliation(s)
- Yixiang Li
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Yajun Bai
- College of Life Sciences, Northwest University, Xi'an, Shanxi, China
| | - Tai-Ping Fan
- Department of Pharmacology, University of Cambridge, Cambridge, UK
| | - Xiaohui Zheng
- College of Life Sciences, Northwest University, Xi'an, Shanxi, China
| | - Yujie Cai
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| |
Collapse
|
3
|
de Sá Queiroz JHF, dos Santos Barbosa M, Miranda LGO, de Oliveira NR, Dellagostin OA, Marchioro SB, Simionatto S. Tp0684, Tp0750, and Tp0792 Recombinant Proteins as Antigens for the Serodiagnosis of Syphilis. Indian J Microbiol 2022; 62:419-427. [PMID: 35974924 PMCID: PMC9375814 DOI: 10.1007/s12088-022-01017-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 03/20/2022] [Indexed: 11/28/2022] Open
Abstract
The incidence of syphilis has increased alarmingly over the years. Its diagnosis continues to be a challenge, leading to the search for new alternative and effective methods. The objective of this study was to select and evaluate three Treponema pallidum recombinant proteins for potential use in syphilis serodiagnosis. Bioinformatics analysis was performed with three T. pallidum antigens (Tp0684, Tp0750, and Tp0792) to assess their physical, antigenic, and structural characteristics. The antigens were chemically synthesized, recombinant plasmids were expressed in Escherichia coli BL21 Star™ (DE3), and the recombinant proteins were purified by nickel affinity chromatography. The antigenicity of the recombinant proteins was evaluated by western blotting and enzyme-linked immunosorbent assay (ELISA), using the sera from patients with primary and latent syphilis. In silico analysis indicated the antigenic potential once the exposed B cell epitopes were detected in the evaluated proteins. Sera from patients with primary and latent syphilis specifically recognized rTp0684, rTp0750, and rTp0792 recombinant antigens. Moreover, the rTp0684-ELISA receiver operating characteristic (ROC) analysis showed an area under the ROC curve of 0.99, indicating high diagnostic efficacy with 97.62% specificity and 95% sensitivity. In conclusion, rTp0684 showed better potential as an antigen for the development of syphilis serodiagnosis. Thus, bioinformatic analysis can be an important tool to guide the selection of antigens for serological diagnosis. Supplementary Information The online version contains supplementary material available at 10.1007/s12088-022-01017-w.
Collapse
Affiliation(s)
- Júlio Henrique Ferreira de Sá Queiroz
- Laboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados - UFGD, Rodovia Dourados - Itahum, km 12, Cidade Universitária, Dourados, MS 79804970 Brazil
| | - Marcelo dos Santos Barbosa
- Laboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados - UFGD, Rodovia Dourados - Itahum, km 12, Cidade Universitária, Dourados, MS 79804970 Brazil
| | - Lais Gonçalves Ortolani Miranda
- Laboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados - UFGD, Rodovia Dourados - Itahum, km 12, Cidade Universitária, Dourados, MS 79804970 Brazil
| | | | | | - Silvana Beutinger Marchioro
- Laboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados - UFGD, Rodovia Dourados - Itahum, km 12, Cidade Universitária, Dourados, MS 79804970 Brazil
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, BA Brazil
| | - Simone Simionatto
- Laboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados - UFGD, Rodovia Dourados - Itahum, km 12, Cidade Universitária, Dourados, MS 79804970 Brazil
| |
Collapse
|
4
|
Wen X, Lin H, Ning Y, Liu G, Ren Y, Li C, Zhang C, Lin J, Song X, Lin J. D-Allulose (D-Psicose) Biotransformation From Allitol by a Newly Found NAD(P)-Dependent Alcohol Dehydrogenase From Gluconobacter frateurii NBRC 3264 and the Enzyme Characterization. Front Microbiol 2022; 13:870168. [PMID: 35547110 PMCID: PMC9083112 DOI: 10.3389/fmicb.2022.870168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 03/17/2022] [Indexed: 11/29/2022] Open
Abstract
The NAD(P)-dependent alcohol dehydrogenase (ADH) gene was cloned from Gluconobacter frateurii NBRC 3264 and expressed in Escherichia coli BL21 star (DE3). The expressed enzyme was purified and the characteristics were investigated. The results showed that this ADH can convert allitol into D-allulose (D-psicose), which is the first reported enzyme with this catalytic ability. The optimum temperature and pH of this enzyme were 50°C and pH 7.0, respectively, and the enzyme showed a maximal activity in the presence of Co2+. At 1 mM Co2+ and allitol concentrations of 50, 150, and 250 mM, the D-allulose yields of 97, 56, and 38%, respectively, were obtained after reaction for 4 h under optimal conditions, which were much higher than that obtained by using the epimerase method of about 30%.
Collapse
Affiliation(s)
- Xin Wen
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Huibin Lin
- Shandong Academy of Chinese Medicine, Jinan, China
| | - Yuhang Ning
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Guangwen Liu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Yilin Ren
- Qingdao Longding Biotech Limited Company, Qingdao, China
| | - Can Li
- School of Biological Engineering, Qilu University of Technology, Jinan, China
| | - Chengjia Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Jianqun Lin
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Xin Song
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Jianqiang Lin
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| |
Collapse
|
5
|
Muneeswaran G, Patel SKS, Kondaveeti S, Shanmugam R, Gopinath K, Kumar V, Kim SY, Lee JK, Kalia VC, Kim IW. Biotin and Zn 2+ Increase Xylitol Production by Candida tropicalis. Indian J Microbiol 2021; 61:331-337. [PMID: 34294999 PMCID: PMC8263835 DOI: 10.1007/s12088-021-00960-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 06/12/2021] [Indexed: 12/29/2022] Open
Abstract
In this study, the medium requirements to increase the production of xylitol by using Candida tropicalis (CT) have been investigated. The technique of single addition or omission of medium components was applied to determine the nutritional requirements. The addition of amino acids such as Asp, Glu, Gln, Asn, Thr, and Gly had no significant effect on CT growth. However, in the absence of other metal ions, there was a higher concentration of cell growth and xylitol production when only Zn2+ was present in the medium. The analysis of various vitamins unveiled that biotin and thiamine were the only vitamins required for the growth of CT. Surprisingly, when only biotin was present in the medium as a vitamin, there was less growth of CT than when the medium was complete, but the amount of xylitol released was significantly higher. Overall, this study will increase the xylitol production using the single omission or addtion technique.
Collapse
Affiliation(s)
- Gurusamy Muneeswaran
- Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Sanjay K. S. Patel
- Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Sanath Kondaveeti
- Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Ramasamy Shanmugam
- Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Krishnasamy Gopinath
- Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Virendra Kumar
- Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Sang-Yong Kim
- Department of Food Science and Biotechnology, Shin-Ansan University, Ansan, 15435 Republic of Korea
| | - Jung-Kul Lee
- Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Vipin Chandra Kalia
- Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - In-Won Kim
- Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| |
Collapse
|
6
|
Wang T, Yang K, Tian Q, Han R, Zhang X, Li A, Zhang L. Acetoacetyl-CoA reductase PhaB as an excellent anti-Prelog biocatalyst for the synthesis of chiral β-hydroxyl ester and the molecular basis of its catalytic performance. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
7
|
Zhou L, Li R, Li X, Zhang Y. One-step selective affinity purification and immobilization of His-tagged enzyme by recyclable magnetic nanoparticles. Eng Life Sci 2021; 21:364-373. [PMID: 34140847 PMCID: PMC8182278 DOI: 10.1002/elsc.202000093] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 02/21/2021] [Accepted: 03/02/2021] [Indexed: 11/07/2022] Open
Abstract
The NiFe2O4 magnetic nanoparticles (NF-MNPs) were prepared for one-step selective affinity purification and immobilization of His-tagged recombinant glucose dehydrogenase (GluDH). The prepared nanoparticles were characterized by a Fourier-transform infrared spectrophotometer and microscopy. The immobilization and purification of His-tagged GluDH on NF-MNPs were investigated. The optimal immobilization conditions were obtained that mixed cell lysis and carriers in a ratio of 0.13 in pH 8.0 Tris-HCl buffer at 30℃ and incubated for 2 h. The highest activity recovery and protein bindings were 71.39% and 38.50 μg mg-1 support, respectively. The immobilized GluDH exhibited high thermostability, pH-stability and it can retain more than 65% of the initial enzyme after 10 cycles for the conversion of glucose to gluconolactone. Comparing with a commercial Ni-NTA resin, the NF-MNPs displayed a higher specific affinity with His-tagged recombinant GluDH.
Collapse
Affiliation(s)
- Li‐Jian Zhou
- The People's Hospital of DanyangAffiliated Danyang Hospital of Nantong UniversityDanyangJiangsu ProvinceP. R. China
| | - Rui‐Fang Li
- School of PharmacyJiangsu UniversityZhenjiangP. R. China
| | - Xue‐Yong Li
- School of PharmacyJiangsu UniversityZhenjiangP. R. China
| | - Ye‐Wang Zhang
- School of PharmacyJiangsu UniversityZhenjiangP. R. China
| |
Collapse
|
8
|
Covalent immobilization of glucose dehydrogenase onto graphene oxide magnetic nanoparticles to improve the stability. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1007/s43153-021-00102-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
9
|
Wang N, Xu Y, Peng C, Wang X, Wei Y, Li K, Wang S, Xu A, Gao J. Identification of a newly isolated Rhodotorula mucilaginosa NQ1 and its development for the synthesis of bulky carbonyl compounds by whole-cell bioreduction. Lett Appl Microbiol 2020; 72:399-407. [PMID: 33217003 DOI: 10.1111/lam.13431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/13/2020] [Accepted: 11/14/2020] [Indexed: 11/29/2022]
Abstract
A strain NQ1, which showed efficient asymmetric reduction of 3,5-bis(trifluoromethyl) acetophenone (BTAP) to enantiopure (S)-[3,5-bis(trifluoromethyl)phenyl]ethanol ((S)-BTPE), which is the key intermediate for the synthesis of a receptor antagonist and antidepressant, was isolated from a soil sample. Based on its morphological and internal transcribed spacer sequence, the strain NQ1 was identified to be Rhodotorula mucilaginosa NQ1. Some key reaction parameters involved in the bioreduction catalyzed by whole cells of R. mucilaginosa NQ1 were subsequently optimized, and the optimized conditions for the synthesis of (S)-BTPE were determined to be as follows: 5·0 ml phosphate buffer (200 mmol l-1 , pH 7·0), 80 mmol l-1 of BTAP, 250 g (wet weight) l-1 of resting cell, 35 g l-1 of glucose and a reaction for 18 h at 30°C and 180 rev min-1 . The strain NQ1 exhibited a best yield of 99% and an excellent enantiomeric excess of 99% for the preparation of (S)-BTPE under the above optimal conditions, and could also asymmetrically reduce a variety of bulky prochiral carbonyl compounds to their corresponding optical hydroxyl compound with excellent enantioselectivity. These results indicated that R. mucilaginosa NQ1 had a good capacity to reduce BTAP to its corresponding (S)-BTPE, and might be a new potential biocatalyst for the production of valuable chiral hydroxyl compounds in industry.
Collapse
Affiliation(s)
- N Wang
- School of Life Science, Hunan University of Science and Technology, Xiangtan, People's Republic of China.,Hunan key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Xiangtan, People's Republic of China
| | - Y Xu
- School of Life Science, Hunan University of Science and Technology, Xiangtan, People's Republic of China
| | - C Peng
- School of Life Science, Hunan University of Science and Technology, Xiangtan, People's Republic of China
| | - X Wang
- School of Life Science, Hunan University of Science and Technology, Xiangtan, People's Republic of China
| | - Y Wei
- School of Life Science, Hunan University of Science and Technology, Xiangtan, People's Republic of China
| | - K Li
- School of Life Science, Hunan University of Science and Technology, Xiangtan, People's Republic of China
| | - S Wang
- School of Life Science, Hunan University of Science and Technology, Xiangtan, People's Republic of China
| | - A Xu
- School of Life Science, Hunan University of Science and Technology, Xiangtan, People's Republic of China
| | - J Gao
- School of Life Science, Hunan University of Science and Technology, Xiangtan, People's Republic of China
| |
Collapse
|
10
|
Wang N, Luo Z, Li K, Xu Y, Peng C. Identification of a newly isolated Sphingomonas sp. LZ1 and its application to biosynthesize chiral alcohols. J GEN APPL MICROBIOL 2020; 66:289-296. [PMID: 32741888 DOI: 10.2323/jgam.2019.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A strain LZ1, which showed efficient asymmetric reduction of 3,5-bis(trifluoromethyl) acetophenone to enantiopure (S)-[3,5-bis(trifluoromethyl)phenyl]ethanol, which is the key intermediate for the synthesis of a receptor antagonist and antidepressant, was isolated from a soil sample. Based on its morphological, 16S rDNA sequence, and phylogenetic analysis, the strain LZ1 was identified to be Sphingomonas sp. LZ1. To our knowledge, this is the first reported case of the species Sphingomonas exhibiting stricter S-enantioselectivity and its use for the asymmetric reduction of 3,5-bis(trifluoromethyl) acetophenone. Some key reaction parameters involved in the bioreduction catalyzed by whole cells of Sphingomonas sp. LZ1 were subsequently optimized, and the optimized conditions for the synthesis of (S)-[3,5-bis(trifluoromethyl)phenyl]ethanol were determined to be as follows: phosphate buffer pH 7.5, 70 mM of 3,5-bis(trifluoromethyl) acetophenone, 30 g/L of glucose as a co-substrate, 300 g (wet weight)/L of resting cell as the biocatalyst, and a reaction for 24 h at 30°C and 180 rpm. Under the above conditions, a best yield of 94% and an excellent enantiomeric excess of 99.6% were obtained, respectively. Sphingomonas sp. LZ1 could also asymmetrically reduce a variety of prochiral ketones to their corresponding optical alcohols with excellent enantioselectivity. These results indicated that Sphingomonas sp. LZ1 had a remarkable capacity to reduce 3,5-bis(trifluoromethyl)acetophenone to its corresponding (S)-[3,5-bis(trifluoromethyl)phenyl]ethanol, and might be a new potential biocatalyst for the production of valuable chiral alcohols in industry.
Collapse
Affiliation(s)
- Nengqiang Wang
- School of Life Science, Hunan University of Science and Technology.,Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization
| | - Zhen Luo
- School of Life Science, Hunan University of Science and Technology
| | - Kaiqin Li
- School of Life Science, Hunan University of Science and Technology
| | - Yingcui Xu
- School of Life Science, Hunan University of Science and Technology
| | - Cheng Peng
- School of Life Science, Hunan University of Science and Technology
| |
Collapse
|
11
|
Expanding the Application Range of Microbial Oxidoreductases by an Alcohol Dehydrogenase from Comamonas testosteroni with a Broad Substrate Spectrum and pH Profile. Catalysts 2020. [DOI: 10.3390/catal10111281] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Alcohol dehydrogenases catalyse the conversion of a large variety of ketone substrates to the corresponding chiral products. Due to their high regio- and stereospecificity, they are key components in a wide range of industrial applications. A novel alcohol dehydrogenase from Comamonas testosteroni (CtADH) was identified in silico, recombinantly expressed and purified, enzymatically and biochemically investigated as well as structurally characterized. These studies revealed a broad pH profile and an extended substrate spectrum with the highest activity for compounds containing halogens as substituents and a moderate activity for bulky–bulky ketones. Biotransformations with selected ketones—performed with a coupled regeneration system for the co-substrate NADPH—resulted in conversions of more than 99% with all tested substrates and with excellent enantioselectivity for the corresponding S-alcohol products. CtADH/NADPH/substrate complexes modelled on the basis of crystal structures of CtADH and its closest homologue suggested preliminary hints to rationalize the enzyme’s substrate preferences
Collapse
|
12
|
Shah S, Sunder AV, Singh P, Wangikar PP. Characterization and Application of a Robust Glucose Dehydrogenase from Paenibacillus pini for Cofactor Regeneration in Biocatalysis. Indian J Microbiol 2020; 60:87-95. [PMID: 32089578 DOI: 10.1007/s12088-019-00834-w] [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: 08/08/2019] [Accepted: 10/23/2019] [Indexed: 02/06/2023] Open
Abstract
Glucose dehydrogenases are important auxiliary enzymes in biocatalysis, employed in the regeneration of reduced nicotinamide cofactors for oxidoreductase catalysed reactions. Here we report the identification and characterization of a novel glucose-1-dehydrogenase (GDH) from Paenibacillus pini that prefers NAD+ as cofactor over NADP+. The purified recombinant P. pini GDH displayed a specific activity of 247.5 U/mg. The enzyme was stable in the pH range 4-8.5 and exhibited excellent thermostability till 50 °C for 24 h, even in the absence of NaCl or glycerol. Paenibacillus pini GDH was also tolerant to organic solvents, demonstrating its potential for recycling cofactors for biotransformation. The potential application of the enzyme was evaluated by coupling with a NAD+-dependent alcohol dehydrogenase for the reduction of acetophenone and ethyl-4-chloro-3-oxo-butanoate. Conversions higher than 95% were achieved within 2 h with low enzyme loading using lyophilized cell lysate, suggesting that P. pini GDH could be highly effective for recycling NADH in redox biocatalysis.
Collapse
Affiliation(s)
- Shikha Shah
- 1Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 India
| | - Avinash Vellore Sunder
- 1Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 India
| | - Pooja Singh
- 1Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 India.,2Department of Biochemistry, Savitribai Phule Pune University, Pune, 411007 India
| | - Pramod P Wangikar
- 1Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076 India
| |
Collapse
|
13
|
Xu MQ, Li FL, Yu WQ, Li RF, Zhang YW. Combined cross-linked enzyme aggregates of glycerol dehydrogenase and NADH oxidase for high efficiency in situ NAD + regeneration. Int J Biol Macromol 2019; 144:1013-1021. [PMID: 31669469 DOI: 10.1016/j.ijbiomac.2019.09.178] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/10/2019] [Accepted: 09/21/2019] [Indexed: 02/06/2023]
Abstract
Cofactor regeneration is an important method to avoid the consumption of large quantities of oxidized cofactor NAD+ in enzyme-catalyzed reactions. Herein, glycerol dehydrogenase (GDH) and NADH oxidase preparations by aggregating enzymes with ammonium sulphate followed by cross-linking formed aggregates for effective regeneration of NAD+. After optimization, the activity of combi-CLEAs and separate CLEAs mixtures were 950 and 580 U/g, respectively. And the catalytic stability of combi-CLEAs against pH and temperature was superior to the free enzyme mixture. After ten cycles of reuse, the catalytic efficiency could still retain 63.3% of its initial activity, indicating that the constructed combi-CLEAs system had excellent reusability. Also, the conversion of glycerol to 1,3-dihydroxyacetone (DHA) was improved by the constructed NAD+ regeneration system, resulting in 4.6%, which was 2.5 times of the free enzyme system. Thus, wide applications of this co-immobilization method in the production of various chiral chemicals could be expected in the industry for its high efficiency at a low cost.
Collapse
Affiliation(s)
- Meng-Qiu Xu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Fei-Long Li
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Wen-Qian Yu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Rui-Fang Li
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Ye-Wang Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, People's Republic of China.
| |
Collapse
|
14
|
Fernandes HS, Teixeira CSS, Sousa SF, Cerqueira NMFSA. Formation of Unstable and very Reactive Chemical Species Catalyzed by Metalloenzymes: A Mechanistic Overview. Molecules 2019; 24:E2462. [PMID: 31277490 PMCID: PMC6651669 DOI: 10.3390/molecules24132462] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/26/2019] [Accepted: 07/03/2019] [Indexed: 11/16/2022] Open
Abstract
Nature has tailored a wide range of metalloenzymes that play a vast array of functions in all living organisms and from which their survival and evolution depends on. These enzymes catalyze some of the most important biological processes in nature, such as photosynthesis, respiration, water oxidation, molecular oxygen reduction, and nitrogen fixation. They are also among the most proficient catalysts in terms of their activity, selectivity, and ability to operate at mild conditions of temperature, pH, and pressure. In the absence of these enzymes, these reactions would proceed very slowly, if at all, suggesting that these enzymes made the way for the emergence of life as we know today. In this review, the structure and catalytic mechanism of a selection of diverse metalloenzymes that are involved in the production of highly reactive and unstable species, such as hydroxide anions, hydrides, radical species, and superoxide molecules are analyzed. The formation of such reaction intermediates is very difficult to occur under biological conditions and only a rationalized selection of a particular metal ion, coordinated to a very specific group of ligands, and immersed in specific proteins allows these reactions to proceed. Interestingly, different metal coordination spheres can be used to produce the same reactive and unstable species, although through a different chemistry. A selection of hand-picked examples of different metalloenzymes illustrating this diversity is provided and the participation of different metal ions in similar reactions (but involving different mechanism) is discussed.
Collapse
Affiliation(s)
- Henrique S Fernandes
- UCIBIO@REQUIMTE, BioSIM, Departamento de Biomedicina, Faculdade de Medicina da Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Carla S Silva Teixeira
- UCIBIO@REQUIMTE, BioSIM, Departamento de Biomedicina, Faculdade de Medicina da Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Sérgio F Sousa
- UCIBIO@REQUIMTE, BioSIM, Departamento de Biomedicina, Faculdade de Medicina da Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Nuno M F S A Cerqueira
- UCIBIO@REQUIMTE, BioSIM, Departamento de Biomedicina, Faculdade de Medicina da Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal.
| |
Collapse
|
15
|
Switching the substrate specificity from NADH to NADPH by a single mutation of NADH oxidase from Lactobacillus rhamnosus. Int J Biol Macromol 2019; 135:328-336. [PMID: 31128193 DOI: 10.1016/j.ijbiomac.2019.05.146] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 05/14/2019] [Accepted: 05/14/2019] [Indexed: 02/07/2023]
Abstract
Enzymatic NADP+ regeneration is a promising approach to produce valuable chemicals under economic conditions. Among all the enzymatic routes, using water-forming NADH oxidase is an ideal one because there is no by-product. However, most NADH oxidases have a low specific activity to NADPH. In this work, a thermostable NADH oxidase from Lactobacillus rhamnosus (LrNox) was rationally engineered to switch its specificity from NADH to NADPH. The results show that mutants D177A, G178R, D177A/G178R, D177A/G178R/L179S improved the NADPH activity by a factor of 4-6. The highest NADPH catalytic efficiency (Kcat/Km 223.71 S-1 μm-1, 47.6-fold higher than wild-type LrNox) and 51% of NADH activity retention were achieved by replacing the single amino acid Leu179 for serine (L179S) in LrNox. Modeling of L179S-NADPH complex reveals that the phosphate group of NADPH interacts with the hydroxyl of Ser179 with a strong hydrogen bond and several shorter hydrogen bonds with the amino group of Lys185 could stabilize the binding of NADPH in the L179S mutant. This work provides an efficient method for converting NAD(P)H specificity and shows that L179S mutant is a potential and efficient auxiliary enzyme for NADP+ regeneration.
Collapse
|