1
|
Chen F, Zang J, Wang Z, Wang J, Shi L, Xiu Y, Lin S, Lin W. Mandelonitrile lyase MDL2-mediated regulation of seed amygdalin and oil accumulation of Prunus Sibirica. BMC PLANT BIOLOGY 2024; 24:590. [PMID: 38902595 PMCID: PMC11191352 DOI: 10.1186/s12870-024-05300-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 06/14/2024] [Indexed: 06/22/2024]
Abstract
BACKGROUND The Prunus sibirica seeds with rich oils has great utilization, but contain amygdalin that can be hydrolyzed to release toxic HCN. Thus, how to effectively reduce seed amygdalin content of P. sibirica is an interesting question. Mandelonitrile is known as one key intermediate of amygdalin metabolism, but which mandelonitrile lyase (MDL) family member essential for its dissociation destined to low amygdalin accumulation in P. sibirica seeds still remains enigmatic. An integration of our recent 454 RNA-seq data, amygdalin and mandelonitrile content detection, qRT-PCR analysis and function determination is described as a critical attempt to determine key MDL and to highlight its function in governing mandelonitrile catabolism with low amygdalin accumulation in Prunus sibirica seeds for better developing edible oil and biodiesel in China. RESULTS To identify key MDL and to unravel its function in governing seed mandelonitrile catabolism with low amygdalin accumulation in P. sibirica. Global identification of mandelonitrile catabolism-associated MDLs, integrated with the across-accessions/developing stages association of accumulative amount of amygdalin and mandelonitrile with transcriptional level of MDLs was performed on P. sibirica seeds of 5 accessions to determine crucial MDL2 for seed mandelonitrile catabolism of P. sibirica. MDL2 gene was cloned from the seeds of P. sibirica, and yeast eukaryotic expression revealed an ability of MDL2 to specifically catalyze the dissociation of mandelonitrile with the ideal values of Km (0.22 mM) and Vmax (178.57 U/mg). A combination of overexpression and mutation was conducted in Arabidopsis. Overexpression of PsMDL2 decreased seed mandelonitrile content with an increase of oil accumulation, upregulated transcript of mandelonitrile metabolic enzymes and oil synthesis enzymes (involving FA biosynthesis and TAG assembly), but exhibited an opposite situation in mdl2 mutant, revealing a role of PsMDL2-mediated regulation in seed amygdalin and oil biosynthesis. The PsMDL2 gene has shown as key molecular target for bioengineering high seed oil production with low amygdalin in oilseed plants. CONCLUSIONS This work presents the first integrated assay of genome-wide identification of mandelonitrile catabolism-related MDLs and the comparative association of transcriptional level of MDLs with accumulative amount of amygdalin and mandelonitrile in the seeds across different germplasms and developmental periods of P. sibirica to determine MDL2 for mandelonitrile dissociation, and an effective combination of PsMDL2 expression and mutation, oil and mandelonitrile content detection and qRT-PCR assay was performed to unravel a mechanism of PsMDL2 for controlling amygdalin and oil production in P. sibirica seeds. These findings could offer new bioengineering strategy for high oil production with low amygdalin in oil plants.
Collapse
Affiliation(s)
- Feng Chen
- College of Biological Sciences and Biotechnology, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Junxin Zang
- College of Biological Sciences and Biotechnology, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Zirui Wang
- College of Biological Sciences and Biotechnology, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Jing Wang
- College of Biological Sciences and Biotechnology, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Lingling Shi
- College of Biological Sciences and Biotechnology, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Yu Xiu
- College of Biological Sciences and Biotechnology, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Shanzhi Lin
- College of Biological Sciences and Biotechnology, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China.
| | - Weijun Lin
- West China Hospital, Sichuan University, Chengdu, 610044, Sichuan, China.
| |
Collapse
|
2
|
Zhou SP, Xue YP, Zheng YG. Maximizing the potential of nitrilase: Unveiling their diversity, catalytic proficiency, and versatile applications. Biotechnol Adv 2024; 72:108352. [PMID: 38574900 DOI: 10.1016/j.biotechadv.2024.108352] [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: 11/21/2023] [Revised: 03/10/2024] [Accepted: 03/30/2024] [Indexed: 04/06/2024]
Abstract
Nitrilases represent a distinct class of enzymes that play a pivotal role in catalyzing the hydrolysis of nitrile compounds, leading to the formation of corresponding carboxylic acids. These enzymatic entities have garnered significant attention across a spectrum of industries, encompassing pharmaceuticals, agrochemicals, and fine chemicals. Moreover, their significance has been accentuated by mounting environmental pressures, propelling them into the forefront of biodegradation and bioremediation endeavors. Nevertheless, the natural nitrilases exhibit intrinsic limitations such as low thermal stability, narrow substrate selectivity, and inadaptability to varying environmental conditions. In the past decade, substantial efforts have been made in elucidating the structural underpinnings and catalytic mechanisms of nitrilase, providing basis for engineering of nitrilases. Significant breakthroughs have been made in the regulation of nitrilases with ideal catalytic properties and application of the enzymes for industrial productions. This review endeavors to provide a comprehensive discourse and summary of recent research advancements related to nitrilases, with a particular emphasis on the elucidation of the structural attributes, catalytic mechanisms, catalytic characteristics, and strategies for improving catalytic performance of nitrilases. Moreover, the exploration extends to the domain of process engineering and the multifarious applications of nitrilases. Furthermore, the future development trend of nitrilases is prospected, providing important guidance for research and application in the related fields.
Collapse
Affiliation(s)
- Shi-Peng Zhou
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ya-Ping Xue
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Yu-Guo Zheng
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China
| |
Collapse
|
3
|
Liu M, Li S. Nitrile biosynthesis in nature: how and why? Nat Prod Rep 2024; 41:649-671. [PMID: 38193577 DOI: 10.1039/d3np00028a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Covering: up to the end of 2023Natural nitriles comprise a small set of secondary metabolites which however show intriguing chemical and functional diversity. Various patterns of nitrile biosynthesis can be seen in animals, plants, and microorganisms with the characteristics of both evolutionary divergence and convergence. These specialized compounds play important roles in nitrogen metabolism, chemical defense against herbivores, predators and pathogens, and inter- and/or intraspecies communications. Here we review the naturally occurring nitrile-forming pathways from a biochemical perspective and discuss the biological and ecological functions conferred by diversified nitrile biosyntheses in different organisms. Elucidation of the mechanisms and evolutionary trajectories of nitrile biosynthesis underpins better understandings of nitrile-related biology, chemistry, and ecology and will ultimately benefit the development of desirable nitrile-forming biocatalysts for practical applications.
Collapse
Affiliation(s)
- Mingyu Liu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China.
| | - Shengying Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong 266237, China
| |
Collapse
|
4
|
Bhalla TC, Thakur N, Kumar V. Arylacetonitrilases: Potential Biocatalysts for Green Chemistry. Appl Biochem Biotechnol 2024; 196:1769-1785. [PMID: 37453025 DOI: 10.1007/s12010-023-04643-2] [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] [Accepted: 07/01/2023] [Indexed: 07/18/2023]
Abstract
Nitrilases are the enzymes that catalyze the hydrolysis of nitriles to corresponding carboxylic acid and ammonia. They are broadly categorized into aromatic, aliphatic, and arylacetonitrilases based on their substrate specificity. Most of the studies pertaining to these enzymes in the literature have focused on aromatic and aliphatic nitrilases. However, arylacetonitrilases have attracted the attention of academia and industry in the last several years due to their aryl specificity and enantioselectivity. They have emerged as interesting biocatalytic tools in green chemistry to synthesize useful aryl acids such as mandelic acid and derivatives of phenylacetic acid. The aim of the present review is to collate information on the arylacetonitrilases and their catalytic properties including enantioselectivity and potential applications in organic synthesis.
Collapse
Affiliation(s)
- Tek Chand Bhalla
- Department of Biotechnology, Himachal Pradesh University, Himachal Pradesh, Gyan-Path, Shimla, 171005, India.
| | - Neerja Thakur
- Department of Biotechnology, Himachal Pradesh University, Himachal Pradesh, Gyan-Path, Shimla, 171005, India
- Department of Biotechnology and Microbiology, Himachal Pradesh, Rajkiya Kanya Mahavidyalaya, Longwood, Shimla, 171001, India
| | - Vijay Kumar
- Department of Biotechnology, Himachal Pradesh University, Himachal Pradesh, Gyan-Path, Shimla, 171005, India
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| |
Collapse
|
5
|
Schober L, Dobiašová H, Jurkaš V, Parmeggiani F, Rudroff F, Winkler M. Enzymatic reactions towards aldehydes: An overview. FLAVOUR FRAG J 2023; 38:221-242. [PMID: 38505272 PMCID: PMC10947199 DOI: 10.1002/ffj.3739] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 03/21/2024]
Abstract
Many aldehydes are volatile compounds with distinct and characteristic olfactory properties. The aldehydic functional group is reactive and, as such, an invaluable chemical multi-tool to make all sorts of products. Owing to the reactivity, the selective synthesis of aldehydic is a challenging task. Nature has evolved a number of enzymatic reactions to produce aldehydes, and this review provides an overview of aldehyde-forming reactions in biological systems and beyond. Whereas some of these biotransformations are still in their infancy in terms of synthetic applicability, others are developed to an extent that allows their implementation as industrial biocatalysts.
Collapse
Affiliation(s)
- Lukas Schober
- Institute of Molecular BiotechnologyGraz University of TechnologyGrazAustria
| | - Hana Dobiašová
- Institute of Chemical and Environmental EngineeringSlovak University of TechnologyBratislavaSlovakia
| | - Valentina Jurkaš
- Institute of Molecular BiotechnologyGraz University of TechnologyGrazAustria
| | - Fabio Parmeggiani
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”Politecnico di MilanoMilanItaly
| | - Florian Rudroff
- Institute of Applied Synthetic ChemistryTU WienViennaAustria
| | - Margit Winkler
- Institute of Molecular BiotechnologyGraz University of TechnologyGrazAustria
- Area BiotransformationsAustrian Center of Industrial BiotechnologyGrazAustria
| |
Collapse
|
6
|
Liu Q, Wu Z, Sun Z, Wang Q, Shi J. Enhanced natural degradation of cyanide tailings: Integrated application of solar drying system and UV irradiation. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131871. [PMID: 37348376 DOI: 10.1016/j.jhazmat.2023.131871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/29/2023] [Accepted: 06/14/2023] [Indexed: 06/24/2023]
Abstract
Cyanide tailings are the bulk solid waste generated by the production processes of gold mines. Since the highly toxicity of cyanide affects its disposal and comprehensive utilization, a decyanation treatment is needed. However, wide-ranging industrial uses of the current decyanation methods are restricted due to the treatment effects and costs. Based on the natural degradation method, the cyanide treatment effect was enhanced by raising the treatment temperature, increasing the ultraviolet (UV) irradiation and turning the pile periodically. Using the Arrhenius equation, the activation energies of the cyanide hydrolysis reactions were calculated as 52.22 kJ/mol and 34.59 kJ/mol for heating alone and for heating combined with UV irradiation, respectively. At 60 ℃, the cyanide tailings reached the discharge standard (leachate, total cyanide (CNt)< 5 mg/L) after 8 h of treatment. Moreover, after adding UV irradiation (with an intensity of 120 μW/cm2) and a hydrogen peroxide spray (spraying intensity, 2 mL/kg) to the above conditions and shortening the treatment time to 7 h, the cyanide tailings reached the standard for use in building materials (leachate, CNt <0.5 mg/L). Based on these results, UV irradiation, ventilation, spraying and pile-turning were integrated into the solar drying room to form an enhanced natural degradation system, which was applied in the semi-industrial scale treatment of the cyanide tailings. The results showed that the cyanide tailings consistently met the standards for discharge and use in building materials, successfully verified the conditions and effects of the laboratory treatment, and reduced the treatment cost by more than 50 %.
Collapse
Affiliation(s)
- Qiang Liu
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China; State Key of Comprehensive Utilization of Low-grade Refractory Gold Ores, Shanghang 364200, China; Xiamen Zijin Mining & Metallurgy Technology Co., Lid., Xiamen 361101, China
| | - Zengling Wu
- State Key of Comprehensive Utilization of Low-grade Refractory Gold Ores, Shanghang 364200, China; Xiamen Zijin Mining & Metallurgy Technology Co., Lid., Xiamen 361101, China
| | - Zhongmei Sun
- State Key of Comprehensive Utilization of Low-grade Refractory Gold Ores, Shanghang 364200, China; Xiamen Zijin Mining & Metallurgy Technology Co., Lid., Xiamen 361101, China
| | - Qiankun Wang
- State Key of Comprehensive Utilization of Low-grade Refractory Gold Ores, Shanghang 364200, China; Xiamen Zijin Mining & Metallurgy Technology Co., Lid., Xiamen 361101, China
| | - Jiyan Shi
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China.
| |
Collapse
|
7
|
Recent Progress in the Production of Cyanide-Converting Nitrilases—Comparison with Nitrile-Hydrolyzing Enzymes. Catalysts 2023. [DOI: 10.3390/catal13030500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023] Open
Abstract
Nitrilases have a high potential for application in organic chemistry, environmental technology, and analytics. However, their industrial uses require that they are produced in highly active and robust forms at a reasonable cost. Some organic syntheses catalyzed by nitrilases have already reached a high level of technological readiness. This has been enabled by the large-scale production of recombinant catalysts. Despite some promising small-scale methods being proposed, the production of cyanide-converting nitrilases (cyanide hydratase and cyanide dihydratase) is lagging in this regard. This review focuses on the prospects of cyanide(di)hydratase-based catalysts. The current knowledge of these enzymes is summarized and discussed in terms of the origin and distribution of their sequences, gene expression, structure, assays, purification, immobilization, and uses. Progresses in the production of other nitrilase catalysts are also tackled, as it may inspire the development of the preparation processes of cyanide(di)hydratases.
Collapse
|
8
|
Zhang K, Pan T, Wang L, Wang H, Ren Y, Wei D. Screening and characterization of a nitrilase with significant nitrile hydratase activity. Biotechnol Lett 2022; 44:1163-1173. [PMID: 36050605 DOI: 10.1007/s10529-022-03291-6] [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: 03/22/2022] [Accepted: 08/09/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE We screened nitrilases with significant nitrile hydratase activity to exploit their potential in benzylic amide biosynthesis. We also investigated the factors affecting their hydration activity to support further research on benzylic amide production by nitrilase. METHODS A sequence-based screening method using previously reported crucial positions identified to be essential for amide-forming capacity of nitrilase (referred to as "amide-formation hotspots") as molecular probes to identify putative amide-forming nitrilases. RESULTS Based on the previously reported "amide-formation hotspots," we identified a nitrilase NitPG from Paraburkholderia graminis DSM 17151 that could produce a significant amount of mandelamide toward mandelonitrile and exhibited general hydration activity toward various benzylic nitriles. The time-course experiment with NitPG demonstrated that amide was also a true reaction product of nitrilase, suggesting that the nitrile catalysis by amide-forming nitrilase could be a post-transition state bifurcation-mediated enzymatic reaction. Further research demonstrated that low temperature, metal ion addition, and specific substrate structure could profoundly improve the amide formation capability of nitrilase. CONCLUSIONS NitPG with broad hydration activity is a potential candidate for the enzymatic synthesis of benzylic amides for biotechnological applications. Studying the effect of nitrilase hydration activity could promote our understanding of the factors that influence amide and acid distribution.
Collapse
Affiliation(s)
- Ke Zhang
- State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Tingze Pan
- State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Liuzhu Wang
- State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Hualei Wang
- State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
| | - Yuhong Ren
- State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Dongzhi Wei
- State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| |
Collapse
|
9
|
Vaishnav A, Kumar R, Singh HB, Sarma BK. Extending the benefits of PGPR to bioremediation of nitrile pollution in crop lands for enhancing crop productivity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 826:154170. [PMID: 35227717 DOI: 10.1016/j.scitotenv.2022.154170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/06/2022] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Incessant release of nitrile group of compounds such as cyanides into agricultural land through industrial effluents and excessive use of nitrile pesticides has resulted in increased nitrile pollution. Release of nitrile compounds (NCs) as plant root exudates is also contributing to the problem. The released NCs interact with soil elements and persists for a long time. Persistent higher concentration of NCs in soil cause toxicity to beneficial microflora and affect crop productivity. The NCs can cause more problems to human health if they reach groundwater and enter the food chain. Nitrile degradation by soil bacteria can be a solution to the problem if thoroughly exploited. However, the impact of such bacteria in plant and soil environments is still not properly explored. Plant growth-promoting rhizobacteria (PGPR) with nitrilase activity has recently gained attention as potential solution to address the problem. This paper reviews the core issue of nitrile pollution in soil and the prospects of application of nitrile degrading bacteria for soil remediation, soil health improvement and plant growth promotion in nitrile-polluted soils. The possible mechanisms of PGPR that can be exploited to degrade NCs, converting them into plant useful compounds and synthesis of the phytohormone IAA from degraded NCs are also discussed at length.
Collapse
Affiliation(s)
- Anukool Vaishnav
- Department of Biotechnology, GLA University, Mathura 281406, India; Agroecology and Environment, Agroscope (Reckenholz), Zürich 8046, Switzerland
| | - Roshan Kumar
- National Centre for Biological Sciences (TIFR-NCBS), Bengaluru 560065, India
| | | | - Birinchi Kumar Sarma
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221110, India.
| |
Collapse
|
10
|
De Luca M, Occhiuzzi MA, Rizzuti B, Ioele G, Ragno G, Garofalo A, Grande F. Interaction of letrozole and its degradation products with aromatase: chemometric assessment of kinetics and structure-based binding validation. J Enzyme Inhib Med Chem 2022; 37:1600-1609. [PMID: 35635194 PMCID: PMC9176668 DOI: 10.1080/14756366.2022.2081845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Letrozole is one of the most prescribed drugs for the treatment of breast cancer in post-menopausal women, and it is endowed with selective peripheral aromatase inhibitory activity. The efficacy of this drug is also a consequence of its long-lasting activity, likely due to its metabolic stability. The reactivity of cyano groups in the letrozole structure could, however, lead to chemical derivatives still endowed with residual biological activity. Herein, the chemical degradation process of the drug was studied by coupling multivariate curve resolution and spectrophotometric methodologies in order to assess a detailed kinetic profile. Three main derivatives were identified after drug exposure to different degradation conditions, consisting of acid-base and oxidative environments and stressing light. Molecular docking confirmed the capability of these compounds to accommodate into the active site of the enzyme, suggesting that the sustained inhibitory activity of letrozole may be at least in part attributed to the degradation compounds.
Collapse
Affiliation(s)
- Michele De Luca
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
| | | | - Bruno Rizzuti
- CNR-NANOTEC, SS Rende (CS), Department of Physics, University of Calabria, Rende, Italy
- Institute for Biocomputation and Physics of Complex Systems (BIFI), Joint Unit GBsC-CSIC-BIFI, University of Zaragoza, Zaragoza, Spain
| | - Giuseppina Ioele
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
| | - Gaetano Ragno
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
| | - Antonio Garofalo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
| | - Fedora Grande
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
| |
Collapse
|
11
|
Peng H, Dong W, Chen Q, Song H, Sun H, Li R, Chang Y, Luo H. Encapsulation of Nitrilase in Zeolitic Imidazolate Framework-90 to Improve Its Stability and Reusability. Appl Biochem Biotechnol 2022; 194:3527-3540. [PMID: 35386065 DOI: 10.1007/s12010-022-03890-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/14/2022] [Indexed: 01/06/2023]
Abstract
In this study, nitrilase (Nit) was immobilized in zeolite imidazole framework-90 (ZIF-90) by one-pot biomimetic mineralization strategy. The structure, morphology and functional groups of ZIF-90 and immobilized enzyme Nit@ZIF-90 were characterized by scanning electron microscopy (SEM)/energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FT-IR). Circular dichroism (CD) proved that the immobilized method of encapsulation in ZIF-90 could effectively maintain the intrinsic conformation of Nit. Meanwhile, the stability and reusability of Nit@ZIF-90 were systematically evaluated. Compared with the free enzyme, the thermal, pH and organic solvents stability of Nit@ZIF-90 were significantly increased. Further, Nit@ZIF-90 exhibited better reusability during the hydrolysis of acrylonitrile and retained 48.34% of the initial activity after 10 cycles. Besides, the Ni@ZIF-90 had preferable storage stability, which showed a high degree of residual activity (more than 64 %) after storage at 4 °C for 7 d. The improved stability and reusability of the Nit@ZIF-90 implied that it could be used as a potential effective biocatalyst for hydrolysis of nitrile compounds in industrial application.
Collapse
Affiliation(s)
- Hui Peng
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Department of Biological Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China
| | - Wenge Dong
- Department of Biological Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Qiwei Chen
- Department of Biological Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Haiyan Song
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Department of Biological Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China
| | - Hongxu Sun
- Department of Biological Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Ren Li
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Department of Biological Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China
| | - Yanhong Chang
- Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China.
| | - Hui Luo
- Department of Biological Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| |
Collapse
|
12
|
Sharma H, Singh RV, Ganjoo A, Kumar A, Singh R, Babu V. Development of effective biotransformation process for benzohydroxamic acid production using Bacillus smithii IIIMB2907. 3 Biotech 2022; 12:44. [PMID: 35096501 PMCID: PMC8761202 DOI: 10.1007/s13205-022-03109-2] [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: 07/01/2021] [Accepted: 01/01/2022] [Indexed: 02/03/2023] Open
Abstract
The present study entails the usefulness of thermophilic amidase-producing bacterium in the biotransformation of benzamide to benzohydroxamic acid (BHA). A bacterium Bacillus smithii IIIMB2907 was isolated from a soil sample collected from hot springs of Manikaran, Himachal Pradesh, India. The whole cells of the bacterium displayed versatile substrate specificity by exhibiting significant activity with a diverse range of amides. In addition, amidase from thermophilic bacterium was induced by adding Ɛ-caprolactam in the mineral base media. The optimum temperature and pH of acyltransferase activity of amidase enzyme were found to be 50 °C and 7.0, respectively. Interestingly, half-life (t 1/2) of this enzyme was 17.37 h at 50 °C. Bench-scale production and purification of BHA was carried out at optimized conditions which resulted in the recovery of 64% BHA with a purity of 96%. Owing to this, the reported process in the present study can be considered of immense industrial significance for the production of BHA. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-022-03109-2.
Collapse
Affiliation(s)
- Hitesh Sharma
- grid.418225.80000 0004 1802 6428Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001 India ,grid.469887.c0000 0004 7744 2771Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Rahul Vikram Singh
- grid.418225.80000 0004 1802 6428Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001 India ,grid.469887.c0000 0004 7744 2771Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Ananta Ganjoo
- grid.418225.80000 0004 1802 6428Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001 India ,grid.469887.c0000 0004 7744 2771Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Amit Kumar
- grid.418225.80000 0004 1802 6428Instrumentation Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180001 India
| | - Ravail Singh
- grid.469887.c0000 0004 7744 2771Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India ,grid.418225.80000 0004 1802 6428Plant Sciences and Agrotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180001 India
| | - Vikash Babu
- grid.418225.80000 0004 1802 6428Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001 India ,grid.469887.c0000 0004 7744 2771Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| |
Collapse
|
13
|
Biological Properties of Vitamins of the B-Complex, Part 1: Vitamins B1, B2, B3, and B5. Nutrients 2022; 14:nu14030484. [PMID: 35276844 PMCID: PMC8839250 DOI: 10.3390/nu14030484] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 02/06/2023] Open
Abstract
This review summarizes the current knowledge on essential vitamins B1, B2, B3, and B5. These B-complex vitamins must be taken from diet, with the exception of vitamin B3, that can also be synthetized from amino acid tryptophan. All of these vitamins are water soluble, which determines their main properties, namely: they are partly lost when food is washed or boiled since they migrate to the water; the requirement of membrane transporters for their permeation into the cells; and their safety since any excess is rapidly eliminated via the kidney. The therapeutic use of B-complex vitamins is mostly limited to hypovitaminoses or similar conditions, but, as they are generally very safe, they have also been examined in other pathological conditions. Nicotinic acid, a form of vitamin B3, is the only exception because it is a known hypolipidemic agent in gram doses. The article also sums up: (i) the current methods for detection of the vitamins of the B-complex in biological fluids; (ii) the food and other sources of these vitamins including the effect of common processing and storage methods on their content; and (iii) their physiological function.
Collapse
|
14
|
Crochet P, Cadierno V. Access to
α
‐ and
β
‐Hydroxyamides and Ureas Through Metal‐Catalyzed C≡N Bond Hydration and Transfer Hydration Reactions. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pascale Crochet
- Departamento de Química Orgánica e Inorgánica Universidad de Oviedo Julián Clavería 8 33006 Oviedo Spain
| | - Victorio Cadierno
- Departamento de Química Orgánica e Inorgánica Universidad de Oviedo Julián Clavería 8 33006 Oviedo Spain
| |
Collapse
|
15
|
Teepakorn C, Zajkoska P, Cwicklinski G, De Berardinis V, Zaparucha A, Nonglaton G, Anxionnaz-Minvielle Z. Nitrilase immobilization and transposition from a micro-scale batch to a continuous process increase the nicotinic acid productivity. Biotechnol J 2021; 16:e2100010. [PMID: 34270173 DOI: 10.1002/biot.202100010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 07/05/2021] [Accepted: 07/09/2021] [Indexed: 01/14/2023]
Abstract
In recent years, many biocatalytic processes have been developed for the production of chemicals and pharmaceuticals. In this context, enzyme immobilization methods have attracted attention for their advantages, such as continuous production and increased stability. Here, enzyme immobilization methods and a collection of nitrilases from biodiversity for the conversion of 3-cyanopyridine to nicotinic acid were screened. Substrate conversion over 10 conversion cycles was monitored to optimize the process. The best immobilization conditions were found with cross-linking using glutaraldehyde to modify the PMMA beads. This method showed good activity over 10 cycles in a batch reactor at 30 and 40°C. Finally, production with a new thermostable nitrilase was examined in a continuous packed bed reactor, showing very high stability of the biocatalytic process at a flow rate of 0.12 ml min-1 and a temperature of 50°C. The complete conversion of 3-cyanopyridine was obtained over 30 days of operation. Future steps will concern reactor scale-up to increase the production rate with reasonable pressure drops.
Collapse
Affiliation(s)
- Chalore Teepakorn
- CEA, LITEN, DTCH, Laboratoire Composants et Systèmes Thermiques (LCST), Univ. Grenoble Alpes, Grenoble, France.,CEA, LETI, DTBS, Laboratoire des Systèmes Microfluidiques pour la Biologie (LSMB), Univ. Grenoble Alpes, Grenoble, France
| | - Petra Zajkoska
- CEA, LETI, DTBS, Laboratoire Chimie, Capteurs et Biomatériaux (L2CB), Univ. Grenoble Alpes, Grenoble, France.,Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Univ. Paris-Saclay, Paris, France
| | - Gregory Cwicklinski
- CEA, LITEN, DTCH, Laboratoire Composants et Systèmes Thermiques (LCST), Univ. Grenoble Alpes, Grenoble, France
| | - Véronique De Berardinis
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Univ. Paris-Saclay, Paris, France
| | - Anne Zaparucha
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ. Evry, Univ. Paris-Saclay, Paris, France
| | - Guillaume Nonglaton
- CEA, LETI, DTBS, Laboratoire Chimie, Capteurs et Biomatériaux (L2CB), Univ. Grenoble Alpes, Grenoble, France
| | - Zoé Anxionnaz-Minvielle
- CEA, LITEN, DTCH, Laboratoire Composants et Systèmes Thermiques (LCST), Univ. Grenoble Alpes, Grenoble, France
| |
Collapse
|
16
|
Bessonnet T, Mariage A, Petit JL, Pellouin V, Debard A, Zaparucha A, Vergne-Vaxelaire C, de Berardinis V. Purification and Characterization of Nit phym , a Robust Thermostable Nitrilase From Paraburkholderia phymatum. Front Bioeng Biotechnol 2021; 9:686362. [PMID: 34277586 PMCID: PMC8280356 DOI: 10.3389/fbioe.2021.686362] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 05/27/2021] [Indexed: 11/13/2022] Open
Abstract
Despite the success of some nitrilases in industrial applications, there is a constant demand to broaden the catalog of these hydrolases, especially robust ones with high operational stability. By using the criteria of thermoresistance to screen a collection of candidate enzymes heterologously expressed in Escherichia coli, the enzyme Nit phym from the mesophilic organism Paraburkholderia phymatum was selected and further characterized. Its quick and efficient purification by heat treatment is of major interest for large-scale applications. The purified nitrilase displayed a high thermostability with 90% of remaining activity after 2 days at 30°C and a half-life of 18 h at 60°C, together with a broad pH range of 5.5-8.5. Its high resistance to various miscible cosolvents and tolerance to high substrate loadings enabled the quantitative conversion of 65.5 g⋅L-1 of 3-phenylpropionitrile into 3-phenylpropionic acid at 50°C in 8 h at low enzyme loadings of 0.5 g⋅L-1, with an isolated yield of 90%. This study highlights that thermophilic organisms are not the only source of industrially relevant thermostable enzymes and extends the scope of efficient nitrilases for the hydrolysis of a wide range of nitriles, especially trans-cinnamonitrile, terephthalonitrile, cyanopyridines, and 3-phenylpropionitrile.
Collapse
Affiliation(s)
- Thomas Bessonnet
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
| | - Aline Mariage
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
| | - Jean-Louis Petit
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
| | - Virginie Pellouin
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
| | - Adrien Debard
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
| | - Anne Zaparucha
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
| | - Carine Vergne-Vaxelaire
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
| | - Véronique de Berardinis
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
| |
Collapse
|
17
|
Sun S, Fan Z, Zhao J, Dai Z, Zhao Y, Dai Y. Copper stimulates neonicotinoid insecticide thiacloprid degradation by Ensifer adhaerens TMX-23. J Appl Microbiol 2021; 131:2838-2848. [PMID: 34075672 DOI: 10.1111/jam.15172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 05/05/2021] [Accepted: 05/27/2021] [Indexed: 11/28/2022]
Abstract
AIMS Aims of this study are to elucidate the molecular mechanism of copper-improved thiacloprid (THI) degradation by Ensifer adhaerens TMX-23 and characterize copper resistance of this strain. METHODS AND RESULTS Resting cells of E. adhaerens TMX-23 were used to degrade THI, with formation of THI amide and 98·31% of 0·59 mmol l-1 THI was degraded in 100 min. The addition of copper improved the degradation of THI and showed little inhibitory effects on the growth of E. adhaerens TMX-23. E. adhaerens TMX-23 degraded THI to THI amide by nitrile hydratases (NhcA and NhpA). QPCR analysis indicated that the expression of nhpA was up-regulated in the presence of copper. E. adhaerens TMX-23 nitrile hydratases were purified, and enzyme assay of NhpA exhibited the highest NHase activity toward THI. The addition of copper activated the activity of NhcA. Soil degradation experiment indicated that E. adhaerens TMX-23 could quickly eliminate THI residual in copper-added soil. CONCLUSIONS Copper improved THI degradation by E. adhaerens TMX-23 was attributed to the induced expression of nhpA and activated NhcA. SIGNIFICANCE AND IMPACT OF THE STUDY This study broadens the investigation of regulatory mechanism of NHase expression and provided theoretical basis for using metal-resistant microbes to degrade pesticide in heavy metal co-contaminated environments.
Collapse
Affiliation(s)
- S Sun
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China.,The Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province and School of Life Science, Jiangsu Normal University, Xuzhou, People's Republic of China
| | - Z Fan
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - J Zhao
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Z Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Y Zhao
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| | - Y Dai
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, Nanjing, People's Republic of China
| |
Collapse
|
18
|
De novo biosynthesis of a nonnatural cobalt porphyrin cofactor in E. coli and incorporation into hemoproteins. Proc Natl Acad Sci U S A 2021; 118:2017625118. [PMID: 33850014 DOI: 10.1073/pnas.2017625118] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Enzymes that bear a nonnative or artificially introduced metal center can engender novel reactivity and enable new spectroscopic and structural studies. In the case of metal-organic cofactors, such as metalloporphyrins, no general methods exist to build and incorporate new-to-nature cofactor analogs in vivo. We report here that a common laboratory strain, Escherichia coli BL21(DE3), biosynthesizes cobalt protoporphyrin IX (CoPPIX) under iron-limited, cobalt-rich growth conditions. In supplemented minimal media containing CoCl2, the metabolically produced CoPPIX is directly incorporated into multiple hemoproteins in place of native heme b (FePPIX). Five cobalt-substituted proteins were successfully expressed with this new-to-nature cobalt porphyrin cofactor: myoglobin H64V V68A, dye decolorizing peroxidase, aldoxime dehydratase, cytochrome P450 119, and catalase. We show conclusively that these proteins incorporate CoPPIX, with the CoPPIX making up at least 95% of the total porphyrin content. In cases in which the native metal ligand is a sulfur or nitrogen, spectroscopic parameters are consistent with retention of native metal ligands. This method is an improvement on previous approaches with respect to both yield and ease-of-implementation. Significantly, this method overcomes a long-standing challenge to incorporate nonnatural cofactors through de novo biosynthesis. By utilizing a ubiquitous laboratory strain, this process will facilitate spectroscopic studies and the development of enzymes for CoPPIX-mediated biocatalysis.
Collapse
|
19
|
Designing of Nanomaterials-Based Enzymatic Biosensors: Synthesis, Properties, and Applications. ELECTROCHEM 2021. [DOI: 10.3390/electrochem2010012] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Among the many biological entities employed in the development of biosensors, enzymes have attracted the most attention. Nanotechnology has been fostering excellent prospects in the development of enzymatic biosensors, since enzyme immobilization onto conductive nanostructures can improve characteristics that are crucial in biosensor transduction, such as surface-to-volume ratio, signal response, selectivity, sensitivity, conductivity, and biocatalytic activity, among others. These and other advantages of nanomaterial-based enzymatic biosensors are discussed in this work via the compilation of several reports on their applications in different industrial segments. To provide detailed insights into the state of the art of this technology, all the relevant concepts around the topic are discussed, including the properties of enzymes, the mechanisms involved in their immobilization, and the application of different enzyme-derived biosensors and nanomaterials. Finally, there is a discussion around the pressing challenges in this technology, which will be useful for guiding the development of future research in the area.
Collapse
|
20
|
Arene-ruthenium(II) and osmium(II) complexes as catalysts for nitrile hydration and aldoxime rearrangement reactions. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120180] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
21
|
Du W, Huang J, Cui B, Guo Y, Wang L, Liang C. Efficient biodegradation of nitriles by a novel nitrile hydratase derived from Rhodococcus erythropolis CCM2595. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1941253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Wenjing Du
- Lab of Advanced Materials and Catalytic Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, PR China
| | - Jiao Huang
- Lab of Biocalyalysis and Transformation, School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, Liaoning, PR China
| | - Baocheng Cui
- Lab of Biocalyalysis and Transformation, School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, Liaoning, PR China
| | - Yi Guo
- Lab of Biocalyalysis and Transformation, School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, Liaoning, PR China
| | - Li Wang
- Lab of Biocalyalysis and Transformation, School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, Liaoning, PR China
| | - Changhai Liang
- Lab of Advanced Materials and Catalytic Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, PR China
| |
Collapse
|
22
|
Shen JD, Cai X, Liu ZQ, Zheng YG. Nitrilase: a promising biocatalyst in industrial applications for green chemistry. Crit Rev Biotechnol 2020; 41:72-93. [PMID: 33045860 DOI: 10.1080/07388551.2020.1827367] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Nitrilases are widely distributed in nature and are able to hydrolyze nitriles into their corresponding carboxylic acids and ammonia. In industry, nitrilases have been used as green biocatalysts for the production of high value-added products. To date, biocatalysts are considered to be important alternatives to chemical catalysts due to increasing environmental problems and resource scarcity. This review provides an overview of recent advances of nitrilases in aspects of distribution, enzyme screening, molecular structure and catalytic mechanism, protein engineering, and their potential applications in industry.
Collapse
Affiliation(s)
- Ji-Dong Shen
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China.,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Xue Cai
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China.,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Zhi-Qiang Liu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China.,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Yu-Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China.,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P.R. China
| |
Collapse
|
23
|
Breaking Molecular Symmetry through Biocatalytic Reactions to Gain Access to Valuable Chiral Synthons. Symmetry (Basel) 2020. [DOI: 10.3390/sym12091454] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
In this review the recent reports of biocatalytic reactions applied to the desymmetrization of meso-compounds or symmetric prochiral molecules are summarized. The survey of literature from 2015 up to date reveals that lipases are still the most used enzymes for this goal, due to their large substrate tolerance, stability in different reaction conditions and commercial availability. However, a growing interest is focused on the use of other purified enzymes or microbial whole cells to expand the portfolio of exploitable reactions and the molecular diversity of substrates to be transformed. Biocatalyzed desymmetrization is nowadays recognized as a reliable and efficient approach for the preparation of pharmaceuticals or natural bioactive compounds and many processes have been scaled up for multigram preparative purposes, also in continuous-flow conditions.
Collapse
|
24
|
Sunder AV, Shah S, Rayavarapu P, Wangikar PP. Expanding the repertoire of nitrilases with broad substrate specificity and high substrate tolerance for biocatalytic applications. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
25
|
Mareya TM, Coady TM, O'Reilly C, Kinsella M, Coffey L, Lennon CM. Process Optimisation Studies and Aminonitrile Substrate Evaluation of Rhodococcus erythropolis SET1, A Nitrile Hydrolyzing Bacterium. ChemistryOpen 2020; 9:512-520. [PMID: 32346499 PMCID: PMC7184877 DOI: 10.1002/open.202000088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Indexed: 11/16/2022] Open
Abstract
A comprehensive series of optimization studies including pH, solvent and temperature were completed on the nitrile hydrolyzing Rhodococcus erythropolis bacterium SET1 with the substrate 3-hydroxybutyronitrile. These identified temperature of 25 °C and pH of 7 as the best conditions to retain enantioselectivity and activity. The effect of the addition of organic solvents to the biotransformation mixture was also determined. The results of the study suggested that SET1 is suitable for use in selected organo-aqueous media at specific ratios only. The functional group tolerance of the isolate with unprotected and protected β-aminonitriles, structural analogues of β-hydroxynitriles was also investigated with disappointingly poor isolated yields and selectivity obtained. The isolate was further evaluated with the α- aminonitrile phenylglycinonitrile generating acid in excellent yield and ee (>99 % (S) - isomer and 50 % yield). A series of pH studies with this substrate indicated pH 7 to be the optimum pH to avoid product and substrate degradation.
Collapse
Affiliation(s)
- Tatenda M. Mareya
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Tracey M. Coady
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Catherine O'Reilly
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Michael Kinsella
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Lee Coffey
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| | - Claire M. Lennon
- Department of ScienceWaterford Institute of TechnologyCork RoadWaterfordX91K0EKIreland
| |
Collapse
|
26
|
Kumari P, Poddar R. Computational modeling for mutational analysis of nitrilase enzyme towards enhancement of binding empathy. J Biomol Struct Dyn 2020; 39:2289-2301. [PMID: 32216606 DOI: 10.1080/07391102.2020.1747546] [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: 10/24/2022]
Abstract
Nitrilase enzyme (a green catalyst) is an industrially important enzyme which hydrolyses various nitrile compounds (containing -CN functional group) into amides and corresponding carboxylic acids. The current study explored the binding affinity and a method to enhance the catalysis activity of the enzyme using computational approaches. Four mutants were generated using sequential site-directed mutagenesis aiming that an increase in hydrogen bonds that will further increase binding efficiency towards the ligand. Molecular dynamics simulation was rigorously performed to check the stability of those mutants followed by docking to verify its interaction with the ligand. Various statistical dynamics analyses were performed to validate the structure. All the studies predict that built mutants are stable. Mutants 2 and 3 showed a better affinity towards acrylamide by forming the highest number of hydrogen bonds implying better catalysis. The binding affinity values of the Mutant 2 and Mutant 3 with acrylamide are -7.44 kcal/mol and -7.17 kcal/mol, respectively. This study may prove useful for the industry to develop efficient nitrilase enzymes with improved catalytic activity.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Priya Kumari
- Department of Bioengineering, Birla Institute of Technology-Mesra, Ranchi, JH, India
| | - Raju Poddar
- Department of Bioengineering, Birla Institute of Technology-Mesra, Ranchi, JH, India
| |
Collapse
|
27
|
Mashweu AR, Chhiba-Govindjee VP, Bode ML, Brady D. Substrate Profiling of the Cobalt Nitrile Hydratase from Rhodococcus rhodochrous ATCC BAA 870. Molecules 2020; 25:molecules25010238. [PMID: 31935987 PMCID: PMC6983157 DOI: 10.3390/molecules25010238] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 12/22/2019] [Accepted: 12/26/2019] [Indexed: 02/04/2023] Open
Abstract
The aromatic substrate profile of the cobalt nitrile hydratase from Rhodococcus rhodochrous ATCC BAA 870 was evaluated against a wide range of nitrile containing compounds (>60). To determine the substrate limits of this enzyme, compounds ranging in size from small (90 Da) to large (325 Da) were evaluated. Larger compounds included those with a bi-aryl axis, prepared by the Suzuki coupling reaction, Morita-Baylis-Hillman adducts, heteroatom-linked diarylpyridines prepared by Buchwald-Hartwig cross-coupling reactions and imidazo[1,2-a]pyridines prepared by the Groebke-Blackburn-Bienaymé multicomponent reaction. The enzyme active site was moderately accommodating, accepting almost all of the small aromatic nitriles, the diarylpyridines and most of the bi-aryl compounds and Morita-Baylis-Hillman products but not the Groebke-Blackburn-Bienaymé products. Nitrile conversion was influenced by steric hindrance around the cyano group, the presence of electron donating groups (e.g., methoxy) on the aromatic ring, and the overall size of the compound.
Collapse
Affiliation(s)
- Adelaide R. Mashweu
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa; (A.R.M.); (V.P.C.-G.)
| | - Varsha P. Chhiba-Govindjee
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa; (A.R.M.); (V.P.C.-G.)
- CSIR Chemical Production Cluster, PO Box 395, Pretoria 0001, South Africa
| | - Moira L. Bode
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa; (A.R.M.); (V.P.C.-G.)
- Correspondence: (M.L.B.); (D.B.); Tel.: +27-117176745 (D.B.)
| | - Dean Brady
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa; (A.R.M.); (V.P.C.-G.)
- Correspondence: (M.L.B.); (D.B.); Tel.: +27-117176745 (D.B.)
| |
Collapse
|
28
|
Genetic and Functional Diversity of Nitrilases in Agaricomycotina. Int J Mol Sci 2019; 20:ijms20235990. [PMID: 31795104 PMCID: PMC6928751 DOI: 10.3390/ijms20235990] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/20/2019] [Accepted: 11/22/2019] [Indexed: 12/27/2022] Open
Abstract
Nitrilases participate in the nitrile metabolism in microbes and plants. They are widely used to produce carboxylic acids from nitriles. Nitrilases were described in bacteria, Ascomycota and plants. However, they remain unexplored in Basidiomycota. Yet more than 200 putative nitrilases are found in this division via GenBank. The majority of them occur in the subdivision Agaricomycotina. In this work, we analyzed their sequences and classified them into phylogenetic clades. Members of clade 1 (61 proteins) and 2 (25 proteins) are similar to plant nitrilases and nitrilases from Ascomycota, respectively, with sequence identities of around 50%. The searches also identified five putative cyanide hydratases (CynHs). Representatives of clade 1 and 2 (NitTv1 from Trametes versicolor and NitAg from Armillaria gallica, respectively) and a putative CynH (NitSh from Stereum hirsutum) were overproduced in Escherichia coli. The substrates of NitTv1 were fumaronitrile, 3-phenylpropionitrile, β-cyano-l-alanine and 4-cyanopyridine, and those of NitSh were hydrogen cyanide (HCN), 2-cyanopyridine, fumaronitrile and benzonitrile. NitAg only exhibited activities for HCN and fumaronitrile. The substrate specificities of these nitrilases were largely in accordance with substrate docking in their homology models. The phylogenetic distribution of each type of nitrilase was determined for the first time.
Collapse
|
29
|
Comparative Analysis of the Conversion of Mandelonitrile and 2-Phenylpropionitrile by a Large Set of Variants Generated from a Nitrilase Originating from Pseudomonas fluorescens EBC191. Molecules 2019; 24:molecules24234232. [PMID: 31766372 PMCID: PMC6930498 DOI: 10.3390/molecules24234232] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 11/15/2019] [Accepted: 11/18/2019] [Indexed: 11/17/2022] Open
Abstract
The arylacetonitrilase from the bacterium Pseudomonas fluorescens EBC191 has been intensively studied as a model to understand the molecular basis for the substrate-, reaction-, and enantioselectivity of nitrilases. The nitrilase converts various aromatic and aliphatic nitriles to the corresponding acids and varying amounts of the corresponding amides. The enzyme has been analysed by site-specific mutagenesis and more than 50 different variants have been generated and analysed for the conversion of (R,S)-mandelonitrile and (R,S)-2-phenylpropionitrile. These comparative analyses demonstrated that single point mutations are sufficient to generate enzyme variants which hydrolyse (R,S)-mandelonitrile to (R)-mandelic acid with an enantiomeric excess (ee) of 91% or to (S)-mandelic acid with an ee-value of 47%. The conversion of (R,S)-2-phenylpropionitrile by different nitrilase variants resulted in the formation of either (S)- or (R)-2-phenylpropionic acid with ee-values up to about 80%. Furthermore, the amounts of amides that are produced from (R,S)-mandelonitrile and (R,S)-2-phenylpropionitrile could be changed by single point mutations between 2%–94% and <0.2%–73%, respectively. The present study attempted to collect and compare the results obtained during our previous work, and to obtain additional general information about the relationship of the amide forming capacity of nitrilases and the enantiomeric composition of the products.
Collapse
|
30
|
Busch H, Hagedoorn PL, Hanefeld U. Rhodococcus as A Versatile Biocatalyst in Organic Synthesis. Int J Mol Sci 2019; 20:E4787. [PMID: 31561555 PMCID: PMC6801914 DOI: 10.3390/ijms20194787] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 09/23/2019] [Accepted: 09/24/2019] [Indexed: 12/11/2022] Open
Abstract
The application of purified enzymes as well as whole-cell biocatalysts in synthetic organic chemistry is becoming more and more popular, and both academia and industry are keen on finding and developing novel enzymes capable of performing otherwise impossible or challenging reactions. The diverse genus Rhodococcus offers a multitude of promising enzymes, which therefore makes it one of the key bacterial hosts in many areas of research. This review focused on the broad utilization potential of the genus Rhodococcus in organic chemistry, thereby particularly highlighting the specific enzyme classes exploited and the reactions they catalyze. Additionally, close attention was paid to the substrate scope that each enzyme class covers. Overall, a comprehensive overview of the applicability of the genus Rhodococcus is provided, which puts this versatile microorganism in the spotlight of further research.
Collapse
Affiliation(s)
- Hanna Busch
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
| | - Peter-Leon Hagedoorn
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
| | - Ulf Hanefeld
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
| |
Collapse
|
31
|
Heidari A, Asoodeh A. A novel nitrile-degrading enzyme (nitrile hydratase) from Ralstonia sp.ZA96 isolated from oil-contaminated soils. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
32
|
Conversion of phenylglycinonitrile by recombinant Escherichia coli cells synthesizing variants of the arylacetonitrilase from Pseudomonas fluorescens EBC191. Appl Microbiol Biotechnol 2019; 103:6737-6746. [PMID: 31222384 DOI: 10.1007/s00253-019-09957-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/06/2019] [Accepted: 05/29/2019] [Indexed: 10/26/2022]
Abstract
The conversion of phenylglycinonitrile (2-aminophenylacetonitrile) by Escherichia coli strains was studied, which recombinantly expressed the arylacetonitrilase (NitA) from Pseudomonas fluorescens EBC191 and different nitrilase variants with altered reaction specificities. The whole-cell catalysts which formed the wild-type nitrilase converted (R,S)-phenylglycinonitrile preferentially to (S)-phenylglycine with a low degree of enantioselectivity. A recombinant strain which formed a variant of NitA produced mainly (S)-phenylglycine amide from (R,S)-phenylglycinonitrile and a second variant showed an almost complete enantioconversion and produced (R)-phenylglycine and left (S)-phenylglycinonitrile. The microbial-produced (S)-phenylglycinonitrile was used to study the chemical racemisation of (S)-phenylglycinonitrile at alkaline pH values in order to establish a dynamic kinetic resolution of the substrate. Subsequently, the conversion of (R,S)-phenylglycinonitrile by the whole-cell catalysts was studied at a pH of 10.8 which allowed a sufficient racemisation rate of phenylglycinonitrile. Surprisingly, under these conditions, strongly increased amounts of (S)-phenylglycine were formed by the recombinant E. coli cells expressing the amide-forming nitrilase variant. The aminopeptidase PepA from E. coli was identified by the construction of a deletion mutant and subsequent complementation as responsible amidase activity, which converted (S)-phenylglycine amide to (S)-phenylglycine.
Collapse
|
33
|
Sharma M, Akhter Y, Chatterjee S. A review on remediation of cyanide containing industrial wastes using biological systems with special reference to enzymatic degradation. World J Microbiol Biotechnol 2019; 35:70. [DOI: 10.1007/s11274-019-2643-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 04/08/2019] [Indexed: 11/24/2022]
|
34
|
Thakur N, Sharma NK, Thakur S, Monika, Bhalla TC. Bioprocess Development for the Synthesis of 4-Aminophenylacetic Acid Using Nitrilase Activity of Whole Cells of Alcaligenes faecalis MTCC 12629. Catal Letters 2019. [DOI: 10.1007/s10562-019-02762-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
35
|
Martínková L. Nitrile metabolism in fungi: A review of its key enzymes nitrilases with focus on their biotechnological impact. FUNGAL BIOL REV 2019. [DOI: 10.1016/j.fbr.2018.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
36
|
Yu H, Jiao S, Wang M, Liang Y, Tang L. Biodegradation of Nitriles by Rhodococcus. BIOLOGY OF RHODOCOCCUS 2019. [DOI: 10.1007/978-3-030-11461-9_7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
37
|
Lavrov KV, Shemyakina AO, Grechishnikova EG, Novikov AD, Kalinina TI, Yanenko AS. In vivo metal selectivity of metal-dependent biosynthesis of cobalt-type nitrile hydratase in Rhodococcus bacteria: a new look at the nitrile hydratase maturation mechanism? Metallomics 2019; 11:1162-1171. [DOI: 10.1039/c8mt00129d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Metal-dependent cblA-mediated mechanism of transcription regulation of NHase could not discriminate Ni and Co, but mechanism of NHase enzyme maturation could do this.
Collapse
Affiliation(s)
- Konstantin V. Lavrov
- Laboratory of Molecular Biotechnology
- State Research Institute of Genetics and Selection of Industrial Microorganisms of the National Research Center “Kurchatov Institute”
- Moscow
- Russia
| | - Anna O. Shemyakina
- Laboratory of Molecular Biotechnology
- State Research Institute of Genetics and Selection of Industrial Microorganisms of the National Research Center “Kurchatov Institute”
- Moscow
- Russia
| | - Elena G. Grechishnikova
- Laboratory of Molecular Biotechnology
- State Research Institute of Genetics and Selection of Industrial Microorganisms of the National Research Center “Kurchatov Institute”
- Moscow
- Russia
| | - Andrey D. Novikov
- Laboratory of Molecular Biotechnology
- State Research Institute of Genetics and Selection of Industrial Microorganisms of the National Research Center “Kurchatov Institute”
- Moscow
- Russia
| | - Tatyana I. Kalinina
- Laboratory of Molecular Biotechnology
- State Research Institute of Genetics and Selection of Industrial Microorganisms of the National Research Center “Kurchatov Institute”
- Moscow
- Russia
| | - Alexander S. Yanenko
- Laboratory of Molecular Biotechnology
- State Research Institute of Genetics and Selection of Industrial Microorganisms of the National Research Center “Kurchatov Institute”
- Moscow
- Russia
| |
Collapse
|
38
|
Xu Z, Xiong N, Zou SP, Liu YX, liu ZQ, Xue YP, Zheng YG. Highly efficient conversion of 1-cyanocycloalkaneacetonitrile using a “super nitrilase mutant”. Bioprocess Biosyst Eng 2018; 42:455-463. [DOI: 10.1007/s00449-018-2049-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/21/2018] [Indexed: 10/27/2022]
|