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Liow MY, Chan ES, Ng WZ, Song CP. Stabilization of Eversa® Transform 2.0 lipase with sorbitol to enhance the efficiency of ultrasound-assisted biodiesel production. Int J Biol Macromol 2024; 276:133817. [PMID: 39002902 DOI: 10.1016/j.ijbiomac.2024.133817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/26/2024] [Accepted: 07/09/2024] [Indexed: 07/15/2024]
Abstract
Ultrasound technology has emerged as a promising tool for enhancing enzymatic biodiesel production, yet the cavitation effect induced can compromise enzyme stability. This study explored the efficiency of polyols in enhancing lipase stability under ultrasound conditions to further improve biodiesel yield. The incorporation of sorbitol resulted in the highest fatty acid methyl ester (FAME) content in the ultrasound-assisted biodiesel production catalyzed by Eversa® Transform 2.0 among the investigated polyols. Furthermore, sorbitol enhanced the stability of the lipase, allowing it to tolerate up to 100 % ultrasound amplitude, compared to 60 % amplitude in its absence. Enzyme activity assays revealed that sorbitol preserved 99 % of the lipase activity, in contrast to 84 % retention observed without sorbitol under an 80 % ultrasound amplitude. Circular dichroism (CD) and fluorescence spectroscopy analyses confirmed that sorbitol enhanced lipase rigidity and preserved its conformational structure under ultrasound exposure. Furthermore, employing a stepwise methanol addition strategy in ultrasound-assisted reactions with sorbitol achieved an 81.2 wt% FAME content in 8 h with only 0.2 wt% enzyme concentration. This promising result highlights the potential of sorbitol as a stabilizing agent in ultrasound-assisted enzymatic biodiesel production, offering a viable approach for enhancing biodiesel yield and enzyme stability in industrial applications.
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Affiliation(s)
- Min Ying Liow
- Department of Chemical Engineering, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia; Monash-Industry Plant Oils Research Laboratory (MIPO), Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia
| | - Eng-Seng Chan
- Department of Chemical Engineering, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia; Monash-Industry Plant Oils Research Laboratory (MIPO), Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia.
| | - Wei Zhe Ng
- Department of Chemical Engineering, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia; Monash-Industry Plant Oils Research Laboratory (MIPO), Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia
| | - Cher Pin Song
- Department of Chemical Engineering, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia; Monash-Industry Plant Oils Research Laboratory (MIPO), Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia.
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Vardar-Yel N, Tütüncü HE, Sürmeli Y. Lipases for targeted industrial applications, focusing on the development of biotechnologically significant aspects: A comprehensive review of recent trends in protein engineering. Int J Biol Macromol 2024; 273:132853. [PMID: 38838897 DOI: 10.1016/j.ijbiomac.2024.132853] [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: 04/15/2024] [Revised: 05/26/2024] [Accepted: 05/31/2024] [Indexed: 06/07/2024]
Abstract
Lipases are remarkable biocatalysts, adept at catalyzing the breakdown of diverse compounds into glycerol, fatty acids, and mono- and di-glycerides via hydrolysis. Beyond this, they facilitate esterification, transesterification, alcoholysis, acidolysis, and more, making them versatile in industrial applications. In industrial processes, lipases that exhibit high stability are favored as they can withstand harsh conditions. However, most native lipases are unable to endure adverse conditions, making them unsuitable for industrial use. Protein engineering proves to be a potent technology in the development of lipases that can function effectively under challenging conditions and fulfill criteria for various industrial processes. This review concentrated on new trends in protein engineering to enhance the diversity of lipase genes and employed in silico methods for predicting and comprehensively analyzing target mutations in lipases. Additionally, key molecular factors associated with industrial characteristics of lipases, including thermostability, solvent tolerance, catalytic activity, and substrate preference have been elucidated. The present review delved into how industrial traits can be enhanced through directed evolution (epPCR, gene shuffling), rational design (FRESCO, ASR), combined engineering strategies (i.e. CAST, ISM, and FRISM) as protein engineering methodologies in contexts of biodiesel production, food processing, and applications of detergent, pharmaceutics, and plastic degradation.
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Affiliation(s)
- Nurcan Vardar-Yel
- Department of Medical Laboratory Techniques, Altınbaş University, 34145 İstanbul, Turkey
| | - Havva Esra Tütüncü
- Department of Nutrition and Dietetics, Malatya Turgut Özal University, 44210 Malatya, Turkey
| | - Yusuf Sürmeli
- Department of Agricultural Biotechnology, Tekirdağ Namık Kemal University, 59030 Tekirdağ, Turkey.
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3
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Chen M, Jin T, Nian B, Cheng W. Solvent Tolerance Improvement of Lipases Enhanced Their Applications: State of the Art. Molecules 2024; 29:2444. [PMID: 38893320 PMCID: PMC11173743 DOI: 10.3390/molecules29112444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/08/2024] [Accepted: 05/17/2024] [Indexed: 06/21/2024] Open
Abstract
Lipases, crucial catalysts in biochemical synthesis, find extensive applications across industries such as food, medicine, and cosmetics. The efficiency of lipase-catalyzed reactions is significantly influenced by the choice of solvents. Polar organic solvents often result in a decrease, or even loss, of lipase activity. Conversely, nonpolar organic solvents induce excessive rigidity in lipases, thereby affecting their activity. While the advent of new solvents like ionic liquids and deep eutectic solvents has somewhat improved the activity and stability of lipases, it fails to address the fundamental issue of lipases' poor solvent tolerance. Hence, the rational design of lipases for enhanced solvent tolerance can significantly boost their industrial performance. This review provides a comprehensive summary of the structural characteristics and properties of lipases in various solvent systems and emphasizes various strategies of protein engineering for non-aqueous media to improve lipases' solvent tolerance. This study provides a theoretical foundation for further enhancing the solvent tolerance and industrial properties of lipases.
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Affiliation(s)
| | | | | | - Wenjun Cheng
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 210009, China; (M.C.); (T.J.); (B.N.)
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Zhang L, Dai W, Rong S, Schwaneberg U, Xu G, Ni Y. Engineering diaryl alcohol dehydrogenase KpADH reveals importance of retaining hydration shell in organic solvent tolerance. Protein Sci 2024; 33:e4933. [PMID: 38501647 PMCID: PMC10949390 DOI: 10.1002/pro.4933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/27/2024] [Accepted: 02/01/2024] [Indexed: 03/20/2024]
Abstract
Alcohol dehydrogenases (ADHs) are synthetically important biocatalysts for the asymmetric synthesis of chiral alcohols. The catalytic performance of ADHs in the presence of organic solvents is often important since most prochiral ketones are highly hydrophobic. Here, the organic solvent tolerance of KpADH from Kluyveromyces polyspora was semi-rationally evolved. Using tolerant variants obtained, meticulous experiments and computational studies were conducted to explore properties including stability, activity and kinetics in the presence of various organic solvents. Compared with WT, variant V231D exhibited 1.9-fold improvement in ethanol tolerance, while S237G showed a 6-fold increase in catalytic efficiency, a higherT 50 15 $$ {\mathrm{T}}_{50}^{15} $$ , as well as 15% higher tolerance in 7.5% (v/v) ethanol. Based on 3 × 100 ns MD simulations, the increased tolerance of V231D and S237G against ethanol may be ascribed to their enhanced ability in retaining water molecules and repelling ethanol molecules. Moreover, 6.3-fold decreased KM value of V231D toward hydrophilic ketone substrate confirmed its capability of retaining hydration shell. Our results suggest that retaining hydration shell surrounding KpADH is critical for its tolerance to organic solvents, as well as catalytic performance. This study provides useful guidance for engineering organic solvent tolerance of KpADH and other ADHs.
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Affiliation(s)
- Lu Zhang
- Key Laboratory of Industrial Biotechnology, Ministry of EducationSchool of Biotechnology, Jiangnan UniversityWuxiChina
| | - Wei Dai
- Key Laboratory of Industrial Biotechnology, Ministry of EducationSchool of Biotechnology, Jiangnan UniversityWuxiChina
| | - Shuo Rong
- Key Laboratory of Industrial Biotechnology, Ministry of EducationSchool of Biotechnology, Jiangnan UniversityWuxiChina
| | | | - Guochao Xu
- Key Laboratory of Industrial Biotechnology, Ministry of EducationSchool of Biotechnology, Jiangnan UniversityWuxiChina
| | - Ye Ni
- Key Laboratory of Industrial Biotechnology, Ministry of EducationSchool of Biotechnology, Jiangnan UniversityWuxiChina
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Xing S, Long J, Xie W, Luo C, He L, Li C, Zeng X. Characterization of a recombinant Aspergillus niger GZUF36 lipase immobilized by ionic liquid modification strategy. Appl Microbiol Biotechnol 2024; 108:233. [PMID: 38400957 PMCID: PMC10894092 DOI: 10.1007/s00253-024-13071-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 01/22/2024] [Accepted: 02/13/2024] [Indexed: 02/26/2024]
Abstract
Enzyme immobilized on magnetic nanomaterials is a promising biocatalyst with efficient recovery under applied magnets. In this study, a recombinant extracellular lipase from Aspergillus niger GZUF36 (PEXANL1) expressed in Pichia pastoris GS115 was immobilized on ionic liquid-modified magnetic nano ferric oxide (Fe3O4@SiO2@ILs) via electrostatic and hydrophobic interaction. The morphology, structure, and properties of Fe3O4@SiO2@ILs and immobilized PEXANL1 were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, x-ray diffraction, vibration sample magnetometer, and zeta potential analysis. Under optimized conditions, the immobilization efficiency and activity recovery of immobilized PEXANL1 were 52 ± 2% and 122 ± 2%, respectively. The enzymatic properties of immobilized PEXANL1 were also investigated. The results showed that immobilized PEXANL1 achieved the maximum activity at pH 5.0 and 45 °C, and the lipolytic activity of immobilized PEXANL1 was more than twice that of PEXANL1. Compared to PEXANL1, immobilized PEXANL1 exhibited enhanced tolerance to temperature, metal ions, surfactants, and organic solvents. The operation stability experiments revealed that immobilized PEXANL1 maintained 86 ± 3% of its activity after 6 reaction cycles. The enhanced catalytic performance in enzyme immobilization on Fe3O4@SiO2@ILs made nanobiocatalysts a compelling choice for bio-industrial applications. Furthermore, Fe3O4@SiO2@ILs could also benefit various industrial enzymes and their practical uses. KEY POINTS: • Immobilized PEXANL1 was confirmed by SEM, FT-IR, and XRD. • The specific activity of immobilized PEXANL1 was more than twice that of PEXANL1. • Immobilized PEXANL1 had improved properties with good operational stability.
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Affiliation(s)
- Shuqi Xing
- Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, People's Republic of China
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang, 550025, People's Republic of China
- College of Liquor and Food Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Jia Long
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang, 550025, People's Republic of China
- College of Liquor and Food Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Wei Xie
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang, 550025, People's Republic of China
- College of Liquor and Food Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Chaocheng Luo
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang, 550025, People's Republic of China
- College of Liquor and Food Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Laping He
- Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, People's Republic of China.
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang, 550025, People's Republic of China.
- College of Liquor and Food Engineering, Guizhou University, Guiyang, 550025, People's Republic of China.
| | - Cuiqin Li
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang, 550025, People's Republic of China.
- College of Liquor and Food Engineering, Guizhou University, Guiyang, 550025, People's Republic of China.
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang, 550025, People's Republic of China.
| | - Xuefeng Zeng
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang, 550025, People's Republic of China
- College of Liquor and Food Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
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Hong SY, Yoon J, An YJ, Lee S, Cha HG, Pandey A, Yoo YJ, Joo JC. Statistical Analysis of the Role of Cavity Flexibility in Thermostability of Proteins. Polymers (Basel) 2024; 16:291. [PMID: 38276699 PMCID: PMC10819066 DOI: 10.3390/polym16020291] [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: 12/15/2023] [Revised: 01/14/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
Conventional statistical investigations have primarily focused on the comparison of the simple one-dimensional characteristics of protein cavities, such as number, surface area, and volume. These studies have failed to discern the crucial distinctions in cavity properties between thermophilic and mesophilic proteins that contribute to protein thermostability. In this study, the significance of cavity properties, i.e., flexibility and location, in protein thermostability was investigated by comparing structural differences between homologous thermophilic and mesophilic proteins. Three dimensions of protein structure were categorized into three regions (core, boundary, and surface) and a comparative analysis of cavity properties using this structural index was conducted. The statistical analysis revealed that cavity flexibility is closely related to protein thermostability. The core cavities of thermophilic proteins were less flexible than those of mesophilic proteins (averaged B' factor values, -0.6484 and -0.5111), which might be less deleterious to protein thermostability. Thermophilic proteins exhibited fewer cavities in the boundary and surface regions. Notably, cavities in mesophilic proteins, across all regions, exhibited greater flexibility than those in thermophilic proteins (>95% probability). The increased flexibility of cavities in the boundary and surface regions of mesophilic proteins, as opposed to thermophilic proteins, may compromise stability. Recent protein engineering investigations involving mesophilic xylanase and protease showed results consistent with the findings of this study, suggesting that the manipulation of flexible cavities in the surface region can enhance thermostability. Consequently, our findings suggest that a rational or computational approach to the design of flexible cavities in surface or boundary regions could serve as an effective strategy to enhance the thermostability of mesophilic proteins.
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Affiliation(s)
- So Yeon Hong
- Department of Chemical and Biological Engineering, Inha Technical College, Inha-ro 100, Michuhol-gu, Incheon 22212, Republic of Korea;
| | - Jihyun Yoon
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si 14662, Republic of Korea (S.L.)
| | - Young Joo An
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si 14662, Republic of Korea (S.L.)
| | - Siseon Lee
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si 14662, Republic of Korea (S.L.)
| | - Haeng-Geun Cha
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si 14662, Republic of Korea (S.L.)
| | - Ashutosh Pandey
- Institute for Water and Wastewater Technology, Durban University of Technology, 19 Steve Biko Road, Durban 4000, South Africa;
- Department of Biotechnology, Faculty of Life Science and Technology, AKS University, Satna 485001, Madhya Pradesh, India
| | - Young Je Yoo
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea;
| | - Jeong Chan Joo
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si 14662, Republic of Korea (S.L.)
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Qiao J, Yang D, Feng Y, Wei W, Liu X, Zhang Y, Zheng J, Ying X. Engineering a Bacillus subtilis esterase for selective hydrolysis of d, l-menthyl acetate in an organic solvent-free system †. RSC Adv 2023; 13:10468-10475. [PMID: 37021103 PMCID: PMC10068921 DOI: 10.1039/d3ra00490b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/20/2023] [Indexed: 04/05/2023] Open
Abstract
Esterase/lipase-catalyzed selective hydrolysis of d, l-menthyl esters has become one of the promising approaches for producing l-menthol, one of the most important flavoring chemicals with extensive uses. However, the activity and l-enantioselectivity of the biocatalyst are not sufficient for meeting the industrial requirements. Herein, a highly active para-nitrobenzyl esterase from Bacillus subtilis 168 (pnbA-BS) was cloned and then engineered to enhance its l-enantioselectivity. On the basis of the strategy tailoring the steric exclusion effect and structural flexibility of the region adjacent to the substrate, the substitution of Ala400 to Pro caused a remarkable improvement in the E value from 1.0 to 466.6. The variant A400P was purified and further confirmed with strict l-enantioselectivity in the selective hydrolysis of d, l-menthyl acetate, whereas the improved l-enantioselectivity caused decreased activity. To develop an efficient, easy-to-use, and green methodology, organic solvent was omitted and substrate constant feeding was integrated into the whole-cell catalyzed system. During the catalytic process, the selective hydrolysis of 1.0 M d, l-menthyl acetate in 14 h offered a conversion of 48.9%, e.e.p value of >99%, and space-time yield of 160.52 g (l d)−1. Esterase/lipase-catalyzed selective hydrolysis of d, l-menthyl esters has become one of the promising approaches for producing l-menthol, one of the most important flavoring chemicals with extensive uses.![]()
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Affiliation(s)
- Jingjing Qiao
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of TechnologyHangzhou 310014China
| | - Duxia Yang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of TechnologyHangzhou 310014China
| | - Yingting Feng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of TechnologyHangzhou 310014China
| | - Wan Wei
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of TechnologyHangzhou 310014China
| | - Xun Liu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of TechnologyHangzhou 310014China
| | - Yinjun Zhang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of TechnologyHangzhou 310014China
| | - Jianyong Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of TechnologyHangzhou 310014China
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Kim SY, Choi KY. Enhanced isobutanol production using engineered E. coli and B. subtilis host by UV-induced mutation. 3 Biotech 2022; 12:283. [PMID: 36276452 PMCID: PMC9485403 DOI: 10.1007/s13205-022-03340-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 08/29/2022] [Indexed: 11/26/2022] Open
Abstract
Recombinant Escherichia coli and Bacillus subtilis strains were engineered by simultaneous chemical and ultraviolet-induced random mutagenesis to enhance bio-alcohol production. Our study investigated the bio-alcohol production of six variants of E. coli (EM1-6) and B. subtilis mutants (BM1-6). The induced mutation in the EM variants increased isobutanol (C4 alcohol) production most effectively, whereas pH adjustment and additional l-valine feeding increased isobutanol production by the BM variants. In contrast, pH adjustment or l-valine addition negatively affected isobutanol production by the EM variants. The highest titer of 5.07 g/L of isobutanol from a 40 g/L yeast extract medium (YEM) was achieved by the EM1 variant, whereas 0.57 g/L of isobutanol from YEM supplemented with 5 g/L of l-valine was obtained from the BM5 variant. These results can be applied in further research on engineering production hosts and improving production titers to utilize heterogenous bioresources in the future.
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Affiliation(s)
- Seo Yeong Kim
- Environmental Research Institute, Ajou University, Suwon, Gyeonggi-do South Korea
- Department of Environmental Engineering, College of Engineering, Ajou University, Suwon, Gyeonggi-do South Korea
| | - Kwon-Young Choi
- Environmental Research Institute, Ajou University, Suwon, Gyeonggi-do South Korea
- Department of Environmental Engineering, College of Engineering, Ajou University, Suwon, Gyeonggi-do South Korea
- Department of Environmental and Safety Engineering, College of Engineering, Ajou University, Suwon, Gyeonggi-do South Korea
- Department of Energy Systems Research, Ajou University, Suwon, Gyeonggi-do South Korea
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Priyanka P, Kinsella GK, Henehan GT, Ryan BJ. Listeria monocytogenes is a solvent tolerant organism secreting a solvent stable lipase: potential biotechnological applications. Biotechnol Lett 2022; 44:1139-1147. [PMID: 36006575 PMCID: PMC9481501 DOI: 10.1007/s10529-022-03284-5] [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: 04/10/2022] [Accepted: 07/18/2022] [Indexed: 11/30/2022]
Abstract
Purpose The emerging biobased economy will require robust, adaptable, organisms for the production and processing of biomaterials as well as for bioremediation. Recently, the search for solvent tolerant organisms and solvent tolerant enzymes has intensified. Resilient organisms secreting solvent stable lipases are of particular interest for biotechnological applications. Methods Screening of soil samples for lipase-producing organisms was carried out on Rhodamine B plates. The most productive lipase-producing organisms were further screened for their resistance to solvents commonly used in biotechnological applications. Results In the course of screening, one of the isolated organisms that exhibited extracellular lipase activity, was identified as the human pathogen Listeria monocytogenes through 16S rRNA sequencing. Further exploration revealed that this organism was resistant to solvents ranging from log P − 0.81 to 4.0. Moreover, in the presence of these solvents, L. monocytogenes secreted an extracellular, solvent tolerant, lipase activity. This lipase retained approximately 80% activity when incubated in 30% (v/v) methanol for 24 h. Conclusion These findings identify L. monocytogenes as a potentially useful organism for biotechnological applications. However, the fact that Listeria is a pathogen is problematic and it will require the use of non-pathogenic or attenuated Listeria strains for practical applications. Nonetheless, the ability to adapt to rapidly changing environmental conditions, to grow at low temperatures, to resist solvents and to secrete an extracellular solvent tolerant lipase are unique and highly useful characteristics. The potential application of L. monocytogenes in wastewater bioremediation and plastics degradation is discussed. Supplementary Information The online version contains supplementary material available at 10.1007/s10529-022-03284-5.
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Affiliation(s)
- Priyanka Priyanka
- School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, D07 ADY7, Ireland
| | - Gemma K Kinsella
- School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, D07 ADY7, Ireland.
| | - Gary T Henehan
- School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, D07 ADY7, Ireland
| | - Barry J Ryan
- School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, D07 ADY7, Ireland
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Lee S, Jung YJ, Park SJ, Ryu MH, Kim JE, Song HM, Kang KH, Song BK, Sung BH, Kim YH, Kim HT, Joo JC. Microbial production of 2-pyrone-4,6-dicarboxylic acid from lignin derivatives in an engineered Pseudomonas putida and its application for the synthesis of bio-based polyester. BIORESOURCE TECHNOLOGY 2022; 352:127106. [PMID: 35378283 DOI: 10.1016/j.biortech.2022.127106] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
Lignin valorization depends on microbial upcycling of various aromatic compounds in the form of a complex mixture, including p-coumaric acid and ferulic acid. In this study, an engineered Pseudomonas putida strain utilizing lignin-derived monomeric compounds via biological funneling was developed to produce 2-pyrone-4,6-dicarboxylic acid (PDC), which has been considered a promising building block for bioplastics. The biosynthetic pathway for PDC production was established by introducing the heterologous ligABC genes under the promoter Ptac in a strain lacking pcaGH genes to accumulate a precursor of PDC, i.e., protocatechuic acid. Based on the culture optimization, fed-batch fermentation of the final strain resulted in 22.7 g/L PDC with a molar yield of 1.0 mol/mol and productivity of 0.21 g/L/h. Subsequent purification of PDC at high purity was successfully implemented, which was consequently applied for the novel polyester.
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Affiliation(s)
- Siseon Lee
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si, Gyeonggi-do 14662, Republic of Korea
| | - Ye Jean Jung
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si, Gyeonggi-do 14662, Republic of Korea
| | - Si Jae Park
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science & Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Mi-Hee Ryu
- Green Carbon Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Joo Eon Kim
- Research Center for Bio-based Chemicals, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Hye Min Song
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science & Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Kyoung Hee Kang
- Research Center for Bio-based Chemicals, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Bong Keun Song
- Research Center for Bio-based Chemicals, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Bong Hyun Sung
- Synthetic Biology and Bioengineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Yong Hwan Kim
- Department of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 44919, Republic of Korea
| | - Hee Taek Kim
- Department of Food Science and Technology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jeong Chan Joo
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si, Gyeonggi-do 14662, Republic of Korea; Research Center for Bio-based Chemicals, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.
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