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Sun Z, You Y, Xu H, You Y, He W, Wang Z, Li A, Xia Y. Food-Grade Expression of Two Laccases in Pichia pastoris and Study on Their Enzymatic Degradation Characteristics for Mycotoxins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 38600054 DOI: 10.1021/acs.jafc.4c00521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Mycotoxin contamination poses substantial health risks to humans and animals. In this study, the two laccases PpLac1 and AoLac2 from Pleurotus pulmonarius and Aspergillus oryzae were selected and heterologously expressed in Pichia pastoris in a food-grade manner to detoxify aflatoxin B1 (AFB1), zearalenone (ZEN), and deoxynivalenol (DON). Both laccases exhibited degradation activity toward these three mycotoxins, while the efficiency of these for DON was relatively low. Therefore, molecular docking between these laccases and DON was conducted to analyze their potential interaction mechanisms. Furthermore, the degradation conditions of AFB1 and ZEN by the two laccases were optimized, and the optimal degradation rates for AFB1 and ZEN by PpLac1 reached 78.51 and 78.90%, while those for AFB1 and ZEN by AoLac2 reached 72.27 and 80.60%, respectively. The laccases PpLac1 and AoLac2 successfully transformed AFB1 and ZEN into the compounds AFQ1 and 15-OH-ZEN, which were 90 and 98% less toxic than the original compounds, respectively. Moreover, the culture supernatants demonstrated effective mycotoxin degradation results for AFB1 and ZEN in contaminated feed samples. The residual levels of AFB1 and ZEN in all samples ranged from 6.61 to 8.72 μg/kg and 3.44 to 98.15 μg/kg, respectively, and these levels were below the limit set by the European Union standards. All of the results in this study indicated that the two laccases have excellent application potential in the feed industry.
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Affiliation(s)
- Zhen Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yingxin You
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Huidong Xu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yang You
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Wenjing He
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Aitao Li
- School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Yu Xia
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
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Sami N, Afzal B, Yasin D, Fatma T. Biochemical Characterization of Laccase from Spirulina CPCC-695 and Their Role in Estrone Degradation. Protein J 2024; 43:115-128. [PMID: 38127183 DOI: 10.1007/s10930-023-10169-7] [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] [Accepted: 11/13/2023] [Indexed: 12/23/2023]
Abstract
The addition of exogenous endocrine disrupting compounds (EDCs) like estrone, in the food chain through the aquatic system, disrupts steroid biosynthesis and metabolism by altering either the genomic or non-genomic pathway that eventually results in various diseases. Thus, bioremediation of these compounds is urgently required to prevent their addition and persistence in the environment. Enzymatic degradation has proven to be a knight in shining armour as it is safe and generates no toxic products. The multicopper oxidases (E.C. 1.10.3.2 benzenediol: oxygen oxidoreductase), laccase with the potential to degrade both phenolic and non-phenolic substrates has recently gained attention. In this study, the laccase was purified, characterized, and used to study estrone degradation. The culture filtrate (crude laccase) was concentrated and precipitated using cold-acetone and dialyzed against tris buffer (50 mM) giving a four-fold partially purified form, with 45.56% yield and 204.14 U/mg as specific activity and a single peak at 250-300 nm. The partially purified laccase was approximately 80 kDa as estimated by SDS-PAGE preferred ABTS as substrate. Both crude and partially purified laccase showed maximum activity at pH 3.0, 40 °C, and 4 mM ABTS. Kinetic constants (Km, Vmax) of crude and partially purified laccase were found to be 0.83 mM; 494.31 mM/min, and 0.58 mM; 480.54 mM/min respectively. Iron sulphate and sodium azide inhibited laccase maximally. Crude and partially purified laccase degradation efficiency was 87.55 and 91.35% respectively. Spirulina CPCC-695 laccase with efficient estrone degradation ability renders them promising candidates for EDCs bioremediation.
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Affiliation(s)
- Neha Sami
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Bushra Afzal
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Durdana Yasin
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Tasneem Fatma
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India.
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Hamed AA, Abd-Elaziz AM, Ghanem MME, ElAwady ME, Abdel-Aziz MS. Production of laccase enzyme from Curvularia lunata MY3: purification and characterization. Folia Microbiol (Praha) 2024; 69:221-234. [PMID: 37691075 PMCID: PMC10876717 DOI: 10.1007/s12223-023-01088-2] [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] [Received: 12/27/2022] [Accepted: 08/09/2023] [Indexed: 09/12/2023]
Abstract
Laccase-producing fungus (MY3) was successfully isolated from soil samples collected from Mansoura Governorate, Egypt. This fungal isolate has shown a high laccase production level over other isolated fungi. The identity of this isolate was determined by the molecular technique 18SrRNA as Curvularia lunata MY3. The enzyme purification was performed using ammonium sulfate precipitation followed by Sephacryl S-200 and DEAE-Sepharose column chromatography. The denatured enzyme using SDS-PAGE had a molar mass of 65 kDa. The purified laccase had an optimum temperature at 40 °C for enzyme activity with 57.3 kJ/mol activation energy for 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) oxidation. The enzyme had an optimum pH of 5.0, and it has shown a high stability at the acidic range (4.5 to 5.5). Mn2+ and Mg2+ ions enhanced the enzyme activity, while most of the enzyme activity was inhibited by Hg2+. Some compounds such as 2-mercaptoethanol, L-cysteine, and sodium azide at a concentration of 10 mmol/L had shown a high suppression effect on the enzyme activity. The enzyme strongly oxidized ABTS and syringaldazine and moderately oxidized DMP and guaiacol. The antimicrobial activity of the purified enzyme towards three pathogenic strains (Escherichia coli ATCC-25922, Staphylococcus aureus NRRLB-767, and Candida albicans ATCC-10231) was evaluated for the potential use as an antimicrobial therapeutic enzyme.
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Affiliation(s)
- Ahmed A Hamed
- Microbial Chemistry Department, National Research Center, 33-El Bohouthst, P.O.12622, Dokki, Giza, Egypt
| | - Ahmed M Abd-Elaziz
- Molecular Biology Department, National Research Center, 33-El Bohouthst, P.O.12622, Dokki, Giza, Egypt
| | - Manal M E Ghanem
- Molecular Biology Department, National Research Center, 33-El Bohouthst, P.O.12622, Dokki, Giza, Egypt.
| | - Mohamed E ElAwady
- Department of Microbial Biotechnology, National Research Center, 33-El Bohouthst, P.O.12622, Dokki, Giza, Egypt
| | - Mohamed S Abdel-Aziz
- Microbial Chemistry Department, National Research Center, 33-El Bohouthst, P.O.12622, Dokki, Giza, Egypt
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4
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Faheem M, Bokhari SAI, Malik MA, Ahmad B, Riaz M, Zahid N, Hussain A, Ghani A, Ullah H, Shah W, Mehmood R, Ahmad K, Rasheed H, Zain A, Hussain S, Khan A, Yasin MT, Tariq H, Rizwanullah, Basheir MM, Jogezai N. Production, purification, and characterization of p-diphenol oxidase (PDO) enzyme from lignolytic fungal isolate Schizophyllum commune MF-O5. Folia Microbiol (Praha) 2023; 68:867-888. [PMID: 37160524 DOI: 10.1007/s12223-023-01056-w] [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: 09/09/2022] [Accepted: 04/04/2023] [Indexed: 05/11/2023]
Abstract
Fungi are producers of lignolytic extracellular enzymes which are used in industries like textile, detergents, biorefineries, and paper pulping. This study assessed for the production, purification, and characterization of novel p-diphenol oxidase (PDO; laccase) enzyme from lignolytic white-rot fungal isolate. Fungi samples collected from different areas of Pakistan were initially screened using guaiacol plate method. The maximum PDO producing fungal isolate was identified on the basis of ITS (internal transcribed spacer sequence of DNA of ribosomal RNA) sequencing. To get optimum enzyme yield, various growth and fermentation conditions were optimized. Later PDO was purified using ammonium sulfate precipitation, size exclusion, and anion exchange chromatography and characterized. It was observed that the maximum PDO producing fungal isolate was Schizophyllum commune (MF-O5). Characterization results showed that the purified PDO was a monomeric protein with a molecular mass of 68 kDa and showed stability at lower temperature (30 °C) for 1 h. The Km and Vmax values of the purified PDO recorded were 2.48 mM and 6.20 U/min. Thermal stability results showed that at 30 °C PDO had 119.17 kJ/K/mol Ea value and 33.64 min half-life. The PDO activity was stimulated by Cu2+ ion at 1.0 mM showing enhanced activity up to 111.04%. Strong inhibition effect was noted for Fe2+ ions at 1 mM showing 12.04% activity. The enzyme showed stability against 10 mM concentration oxidizing reducing agents like DMSO, EDTA, H2O2, NaOCl, and urea and retained more than 75% of relative activity. The characterization of purified PDO enzyme confirmed its tolerance against salt, metal ions, organic solvents, and surfactants indicating its ability to be used in the versatile commercial applications.
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Affiliation(s)
- Muhammad Faheem
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan.
| | - Syed Ali Imran Bokhari
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Muhammad Arshad Malik
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Bashir Ahmad
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Muhammad Riaz
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Nafeesa Zahid
- Department of Botany, Mirpur University of Science and Technology (MUST), Mirpur, Azad Kashmir, 10250, Pakistan
| | - Adil Hussain
- Food and Biotechnology Research Centre, Pakistan, Council of Scientific and Industrial Research (PCSIR), Laboratories Complex , Ferozepur Road, Lahore, 54600, Pakistan
| | - Abdul Ghani
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Hanif Ullah
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Waseem Shah
- Department of Biosciences, Comsats University, Islamabad, 45550, Pakistan
| | - Rashid Mehmood
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Khurshid Ahmad
- College of Food Sciences and Engineering, Ocean University of China, Shandong Province, 266003, Qingdao, China
| | - Hassam Rasheed
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Ali Zain
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Saddam Hussain
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Abrar Khan
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Muhammad Talha Yasin
- Insititute of Biological Sciences, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, 64200, Pakistan
| | - Hasnat Tariq
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Rizwanullah
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
| | - Muhammad Mudassir Basheir
- Department of Biological Sciences, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, 44000, Pakistan
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da Rocha AB, de Aquino Saraiva R, de Siqueira VM, Yogui GT, de Souza Bezerra R, de Assis CRD, Sousa MSB, de Souza Buarque D. Shrimp laccase degrades polycyclic aromatic hydrocarbons from an oil spill disaster in Brazil: A tool for marine environmental bioremediation. MARINE POLLUTION BULLETIN 2023; 194:115445. [PMID: 37639916 DOI: 10.1016/j.marpolbul.2023.115445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/19/2023] [Accepted: 08/20/2023] [Indexed: 08/31/2023]
Abstract
Our work aims to purify, characterize and evaluate a laccase from by-products of the shrimp farming industry (Litopenaeus vannamei) for the degradation of Polycyclic Aromatic Hydrocarbons (PAHs) from 2019 oil spill in Brazilian coast. The enzyme was purified by affinity chromatography and characterized as thermostable, with activity above 90 °C and at alkaline pH. In addition, the laccase was also tolerant to copper, lead, cadmium, zinc, arsenic, hexane and methanol, with significant enzymatic activation in acetone and 10 mM mercury. Concerning PAHs' degradation, the enzyme degraded 42.40 % of the total compounds, degrading >50 % of fluorene, C4-naphthalenes, C3-naphthalenes, C2-naphthalenes, anthracene, acenaphthene, 1-methylnaphthalene and 2-methylnaphthalene. Thus, this laccase demonstrated important characteristics for bioremediation of marine environments contaminated by crude oil spills, representing a viable and ecological alternative for these purposes.
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Affiliation(s)
- Amanda Barbosa da Rocha
- Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Pernambuco, Fazenda Saco, s/n, Serra Talhada, PE 55608-680, Brazil; Programa de Pós-graduação em Biodiversidade e Conservação, UFRPE/UAST, 55608-680, Brazil
| | - Rogério de Aquino Saraiva
- Programa de Pós-graduação em Biodiversidade e Conservação, UFRPE/UAST, 55608-680, Brazil; Universidade Federal do Cariri, Campus Brejo Santo, Brejo Santo, Ceará 63048-080, Brazil
| | - Virgínia Medeiros de Siqueira
- Programa de Pós-graduação em Biodiversidade e Conservação, UFRPE/UAST, 55608-680, Brazil; Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, Pernambuco 52171-900, Brazil.
| | - Gilvan Takeshi Yogui
- Departamento de Oceanografia, Universidade Federal de Pernambuco, Recife, Pernambuco 50740-550, Brazil.
| | - Ranilson de Souza Bezerra
- Departamento de Bioquímica, Universidade Federal de Pernambuco, Recife, Pernambuco 50670-901, Brazil
| | | | | | - Diego de Souza Buarque
- Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Pernambuco, Fazenda Saco, s/n, Serra Talhada, PE 55608-680, Brazil; Programa de Pós-graduação em Biodiversidade e Conservação, UFRPE/UAST, 55608-680, Brazil.
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Rawal RS, Mehant A, Suman SK. Deciphering ligninolytic enzymes in the secretome of Pycnoporus sp. and their potential in degradation of 2-chlorophenol. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:92830-92841. [PMID: 37495802 DOI: 10.1007/s11356-023-28932-9] [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: 01/03/2023] [Accepted: 07/18/2023] [Indexed: 07/28/2023]
Abstract
Chlorophenols and their derivatives are persistent environmental pollutants, posing a threat to terrestrial and aquatic life. The biological approach for eliminating toxic contaminants is an effective, sustainable, and environmental friendly method. In this study, the crude enzymes present in the secretome of white-rot fungus (Pycnoporus sp.) were explored for the degradation of 2-chlorophenol. The activity of ligninolytic enzymes in the secretome was analyzed and characterized for their kinetics and thermodynamic properties. Laccase and manganese peroxidase were prevalent ligninolytic enzymes and exhibited temperature stability in the range of 50-65 °C and pH 4-5, respectively. The kinetic parameters Michaelis constant (Km) and turnover number (Kcat) for Lac were 42.54 μM and 45 s-1 for 2,2'-azino-bis (3-ethylben- zothiazoline-6-sulfonic acid), and 93.56 μM and 48 s-1 towards 2,6-dimethoxyphenol whereas Km and Kcat for MnP were 2039 μM and 294 s-1 for guaiacol as substrate. Treatment with the crude enzymes laccase and manganese peroxidase results in the reduction of 2-chlorophenol concentration, confirmed by UV-visible absorption spectra and high-performance liquid chromatography analysis. The detoxification of 2-chlorophenol into less toxic forms was confirmed by the plate toxicity assay. This study demonstrated that crude enzymes produced by Pycnoporus sp. could potentially minimize the toxicity of phenolic compounds in a sustainable way.
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Affiliation(s)
- Raja Singh Rawal
- Material Resource Efficiency Division, CSIR-Indian Institute of Petroleum, Haridwar Road, Dehradun, 248005, Uttarakhand, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Aditri Mehant
- Jamia Hamdard University, Hamdard Nagar, New Delhi, 110062, India
| | - Sunil Kumar Suman
- Material Resource Efficiency Division, CSIR-Indian Institute of Petroleum, Haridwar Road, Dehradun, 248005, Uttarakhand, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Msimbira LA, Naamala J, Subramanian S, Smith DL. Cell-Free Supernatant (CFS) from Bacillus subtilis EB2004S and Lactobacillus helveticus EL2006H Cultured at a Range of pH Levels Modulates Potato Plant Growth under Greenhouse Conditions. Int J Mol Sci 2023; 24:ijms24076620. [PMID: 37047598 PMCID: PMC10095402 DOI: 10.3390/ijms24076620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/29/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Agriculture involving industrial fertilizers is another major human made contributing factor to soil pH variation after natural factors such as soil parent rock, weathering time span, climate, and vegetation. The current study assessed the potential effect of cell-free supernatant (CFS) obtained from Bacillus subtilis EB2004S and Lactobacillus helveticus EL2006H cultured at three pH levels (5, 7, and 8) on potato (var Goldrush) growth enhancement in a greenhouse pot experiment. The results showed that CFSs obtained from B. subtilis EB2004S and L. helveticus EL2006H cultured at pH 5 significantly improved photosynthetic rates, stomatal conductance, root fresh weight, and whole plant fresh weight. interactive effects of pot pH and that of CFSs obtained from pH 5 influenced chlorophyll, plant height, and shoot and whole plant fresh weight. Moreover, treatment 52EB2004S~0.4% initiated early tuberization for potato grown at pH 7 and 8. Potato grown at pH 5, which received a 72EB2004S~0.4% CFS treatment, had greater whole plant fresh and dry weight than that treated with L. helveticus EL2006H CFS and a positive control. Taken together, the findings of this study are unique in that it probed the effect of CFS produced under differing pH conditions which revealed a new possibility to mitigate stresses in plants.
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Affiliation(s)
- Levini A. Msimbira
- Department of Plant Science, McGill University, Montreal, QC H9X 3V9, Canada
| | - Judith Naamala
- Department of Plant Science, McGill University, Montreal, QC H9X 3V9, Canada
| | | | - Donald L. Smith
- Department of Plant Science, McGill University, Montreal, QC H9X 3V9, Canada
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Edoamodu CE, Nwodo UU. Decolourization of synthetic dyes by laccase produced from Bacillus sp. NU2. BIOTECHNOL BIOTEC EQ 2022. [DOI: 10.1080/13102818.2022.2053341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Chiedu Epiphany Edoamodu
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
| | - Uchechukwu Uchechukwu Nwodo
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
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Soil microbes and associated extracellular enzymes largely impact nutrient bioavailability in acidic and nutrient poor grassland ecosystem soils. Sci Rep 2022; 12:12601. [PMID: 35871260 PMCID: PMC9308775 DOI: 10.1038/s41598-022-16949-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/19/2022] [Indexed: 11/26/2022] Open
Abstract
Understanding the role of soil microbes and their associated extracellular enzymes in long-term grassland experiments presents an opportunity for testing relevant ecological questions on grassland nutrient dynamics and functioning. Veld fertilizer trials initiated in 1951 in South Africa were used to assess soil functional microbial diversity and their metabolic activities in the nutrient-poor grassland soils. Phosphorus and liming trials used for this specific study comprised of superphosphate (336 kg ha−1) and dolomitic lime (2250 kg ha−1) (P + L), superphosphate (336 kg ha−1) (+ P) and control trials. These soils were analyzed for their nutrient concentrations, pH, total cations and exchange acidity, microflora and extracellular enzyme activities. The analysed soil characteristics showed significant differences except nitrogen (N) and organic carbon (C) concentrations showing no significant differences. P-solubilizing, N-cycling and N-fixing microbial diversity varied among the different soil treatments. β-glucosaminidase enzyme activity was high in control soils compared to P-fertilized and limed soils. Alkaline phosphatase showed increased activity in P-fertilized soils, whereas acid phosphatase showed increased activity in control soils. Therefore, the application of superphosphate and liming influences the relative abundance of bacterial communities with nutrient cycling and fixing functions which account for nutrient bioavailability in acidic and nutrient stressed grassland ecosystem soils.
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Cen Q, Wu X, Cao L, Lu Y, Lu X, Chen J, Fu G, Liu Y, Ruan R. Green production of a yellow laccase by Coriolopsis gallica for phenolic pollutants removal. AMB Express 2022; 12:96. [PMID: 35841420 PMCID: PMC9288578 DOI: 10.1186/s13568-022-01434-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 07/05/2022] [Indexed: 11/12/2022] Open
Abstract
As a group of green biocatalysts, fungal laccases have aroused great interest in diverse biotechnological fields. Therein, yellow laccase has advantages over blue laccase in catalytic performance, but it is not common in the reported fungal laccases. Here, we report a yellow laccase from white-rot fungus Coriolopsis gallica NCULAC F1 about its production, purification, characterization, and application. Laccase production in the co-fermentation of pomelo peel and wheat bran reached the enzyme activity by 10,690 U/L after 5 days with a 13.58-time increase. After three steps of purification, laccase increased the specific activity from 30.78 to 188.79 U/mg protein with an activity recovery of 45.64%. The purified C. gallica laccase (CGLac) showed a molecular mass of about 57 kDa. CGLac had a yellow color and no absorption peaks at 610 nm and 330 nm, suggesting that it’s a yellow laccase. CGLac exhibited stability towards temperature (40–60 °C) and neutral pH (6.0–8.0). Fe3+ and Mn2+ strongly stimulated CGLac activity by 162.56% and 226.05%, respectively. CGLac remained high activities when exposed to organic reagents and putative inhibitors. Additionally, CGLac contributed to 90.78%, 93.26%, and 99.66% removal of phenol, p-chlorophenol and bisphenol A after 120 min, respectively. In conclusion, a green efficient production strategy was introduced for fungal laccase, and the obtained CGLac presented great enzymatic properties and catalytic potential in the removal of phenolic pollutants. Pomelo peels and wheat bran are great nutritional sources and laccase inducers. CGLac showed the spectral characteristic of yellow laccase. CGLac had great stability and catalytic ability for phenolic pollutants removal.
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Affiliation(s)
- Qingjing Cen
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion of Ministry of Education, Nanchang University, Nanchang, 330047, Jiangxi, China
| | - Xiaodan Wu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion of Ministry of Education, Nanchang University, Nanchang, 330047, Jiangxi, China. .,International Institute of Food Innovation, Nanchang University, Nanchang, 330047, Jiangxi, China.
| | - Leipeng Cao
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion of Ministry of Education, Nanchang University, Nanchang, 330047, Jiangxi, China
| | - Yanjuan Lu
- Beijing Fairyland Environmental Technology CO., LTD, Beijing, 100096, China
| | - Xuan Lu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion of Ministry of Education, Nanchang University, Nanchang, 330047, Jiangxi, China
| | - Jianwen Chen
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion of Ministry of Education, Nanchang University, Nanchang, 330047, Jiangxi, China
| | - Guiming Fu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion of Ministry of Education, Nanchang University, Nanchang, 330047, Jiangxi, China.,International Institute of Food Innovation, Nanchang University, Nanchang, 330047, Jiangxi, China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion of Ministry of Education, Nanchang University, Nanchang, 330047, Jiangxi, China
| | - Roger Ruan
- Department of Bioproducts and Biosystems Engineering, Center for Biorefining, University of Minnesota, St. Paul, MN, 55108, USA
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Edoamodu CE, Nwodo UU. Thermo-active and alkaliphilic amalgamated laccase immobilized on sodium alginate for synthetic dye decolourization. BIOCATAL BIOTRANSFOR 2022. [DOI: 10.1080/10242422.2022.2078661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Chiedu E. Edoamodu
- Faculty of Science and Agriculture, University of Fort Hare, Alice, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
| | - Uchechukwu U. Nwodo
- Faculty of Science and Agriculture, University of Fort Hare, Alice, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
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12
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Enzymatically triggered delignification through a novel stable laccase: A mixed in-silico /in-vitro exploration of a complex environmental microbiota. Int J Biol Macromol 2022; 211:328-341. [PMID: 35551951 DOI: 10.1016/j.ijbiomac.2022.05.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/20/2022] [Accepted: 05/05/2022] [Indexed: 11/23/2022]
Abstract
Laccases have been broadly applied as a multitasking biocatalyst in various industries, but their applications tend to be limited by easy deactivation, lack of adequate stability, and susceptibility under complex conditions. Identifying stable laccase as a green-biocatalyst is crucial for developing cost-effective biorefining processes. In this direction, we attempted in-silico screening a stable metagenome-derived laccase (PersiLac1) from tannery wastewater in a complex environment. The laccase exhibited high thermostability, retaining 53.19% activity after 180 min at 70 °C, and it was stable in a wide range of pH (4.0-9.0). After 33 days of storage at 50°C, pH 6.0, the enzyme retained 71.65% of its activity. Various metal ions, inhibitors, and organic solvents showed that PersiLac1 has a stable structure. The stable PersiLac1 could successfully remove lignin and phenolic from quinoa husk and rice straw. In the separate hydrolysis and fermentation process (SHF) after 72 h, hydrolysis was obtained 100% and 73.4% for quinoa husk and rice straw, and fermentation by the S. cerevisiae was be produced 41.46 g/L and 27.75g/L ethanol, respectively. Results signified that the novel lignin-degrading enzyme was confirmed to have great potential for industrial application as a green-biocatalyst based on enzymatically triggered to delignification and detoxify lignocellulosic biomass.
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13
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Nayak B, Choudhary R. Optimization, purification and characterization of laccase from lignocellulolytic fungi Dichotomopilus funicola NFCCI 4534 and Alternaria padwickii NFCCI 4535. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Enterobacter sp. AI1 produced a thermo-acidic-tolerant laccase with a high potential for textile dyes degradation. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102206] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Mao G, Wang K, Wang F, Li H, Zhang H, Xie H, Wang Z, Wang F, Song A. An Engineered Thermostable Laccase with Great Ability to Decolorize and Detoxify Malachite Green. Int J Mol Sci 2021; 22:11755. [PMID: 34769185 PMCID: PMC8583942 DOI: 10.3390/ijms222111755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/20/2021] [Accepted: 10/26/2021] [Indexed: 11/28/2022] Open
Abstract
Laccases can catalyze the remediation of hazardous synthetic dyes in an eco-friendly manner, and thermostable laccases are advantageous to treat high-temperature dyeing wastewater. A novel laccase from Geothermobacter hydrogeniphilus (Ghlac) was cloned and expressed in Escherichia coli. Ghlac containing 263 residues was characterized as a functional laccase of the DUF152 family. By structural and biochemical analyses, the conserved residues H78, C119, and H136 were identified to bind with one copper atom to fulfill the laccase activity. In order to make it more suitable for industrial use, Ghlac variant Mut2 with enhanced thermostability was designed. The half-lives of Mut2 at 50 °C and 60 °C were 80.6 h and 9.8 h, respectively. Mut2 was stable at pH values ranging from 4.0 to 8.0 and showed a high tolerance for organic solvents such as ethanol, acetone, and dimethyl sulfoxide. In addition, Mut2 decolorized approximately 100% of 100 mg/L of malachite green dye in 3 h at 70 °C. Furthermore, Mut2 eliminated the toxicity of malachite green to bacteria and Zea mays. In summary, the thermostable laccase Ghlac Mut2 could effectively decolorize and detoxify malachite green at high temperatures, showing great potential to remediate the dyeing wastewater.
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Affiliation(s)
- Guotao Mao
- Department of Microbiology, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China; (G.M.); (K.W.); (F.W.); (H.L.); (H.Z.); (H.X.); (F.W.)
- The Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Henan Agricultural University, Zhengzhou 450002, China
| | - Kai Wang
- Department of Microbiology, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China; (G.M.); (K.W.); (F.W.); (H.L.); (H.Z.); (H.X.); (F.W.)
| | - Fangyuan Wang
- Department of Microbiology, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China; (G.M.); (K.W.); (F.W.); (H.L.); (H.Z.); (H.X.); (F.W.)
| | - Hao Li
- Department of Microbiology, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China; (G.M.); (K.W.); (F.W.); (H.L.); (H.Z.); (H.X.); (F.W.)
| | - Hongsen Zhang
- Department of Microbiology, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China; (G.M.); (K.W.); (F.W.); (H.L.); (H.Z.); (H.X.); (F.W.)
- The Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Henan Agricultural University, Zhengzhou 450002, China
| | - Hui Xie
- Department of Microbiology, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China; (G.M.); (K.W.); (F.W.); (H.L.); (H.Z.); (H.X.); (F.W.)
- The Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Henan Agricultural University, Zhengzhou 450002, China
| | - Zhimin Wang
- Department of Applied Chemistry, College of Science, Henan Agricultural University, Zhengzhou 450002, China;
| | - Fengqin Wang
- Department of Microbiology, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China; (G.M.); (K.W.); (F.W.); (H.L.); (H.Z.); (H.X.); (F.W.)
- The Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Henan Agricultural University, Zhengzhou 450002, China
| | - Andong Song
- Department of Microbiology, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China; (G.M.); (K.W.); (F.W.); (H.L.); (H.Z.); (H.X.); (F.W.)
- The Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture, Henan Agricultural University, Zhengzhou 450002, China
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16
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Edoamodu CE, Nwodo UU. Marine sediment derived bacteria Enterobacter asburiae ES1 and Enterobacter sp. Kamsi produce laccase with high dephenolisation potentials. Prep Biochem Biotechnol 2021; 52:748-761. [PMID: 34689726 DOI: 10.1080/10826068.2021.1992781] [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] [Indexed: 12/07/2022]
Abstract
Purified laccases from bacterial species isolated from marine sediment were applied to degrade Bisphenol A (BPA). The Bacterial species were isolated from marine water sediments sampled from Cove Rock and Bonza Bay beach of the Eastern Cape Province, South Africa was tested for laccase activity on varied phenolic plates. The two most promising strains, Enterobacter asburiae ES1 and Enterobacter sp. Kamsi was subjected to extracellular laccase production and were identified using molecular methods. Both extracted bacterial laccases showed an affinity for ABTS and PFC substrates and were purified to homogeneity by ammonium sulfate precipitation, anion exchange, and size exclusion chromatography. A specific laccase activity of 231.67 and 218.15 U/mg of protein and a molecular weight of 50 and 55 kDa was obtained from the purified ES1 and Kamsi laccases. Laccase activity was optimum at pH8 and 5 and at 80 °C and 60 °C for ES1 and Kamsi laccases, and they manifested 71.7% and 65.8% BPA decolorizing effects. The optimized treatment condition applied showed maximum BPA removal effects of 85% and 86% at pH7 and 6, while 78% and 79% was degraded at 70 °C and 80 °C while at 250 µL enzyme volume, BPA was actively degraded to 85%, and 75% removal effect showed by ES1 and Kamsi laccases. The molecular identification of the pure colonies using 16S rRNA showed the isolate belonged to the class of gammaproteobacterial. Their nucleotide sequence has been deposited in NCBI with the accession number MN686602 and MN686603. Conclusively, marine habitat serves as a reservoir for active bacterial laccase producers suitable for bioprocess application.
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Affiliation(s)
- Chiedu E Edoamodu
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
| | - Uchechukwu U Nwodo
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
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17
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Myco-remediation of Chlorinated Pesticides: Insights Into Fungal Metabolic System. Indian J Microbiol 2021; 61:237-249. [PMID: 34294989 DOI: 10.1007/s12088-021-00940-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 04/03/2021] [Indexed: 12/22/2022] Open
Abstract
Synthetic chemicals including organochlorine pesticides pose environment and health hazard due to persistent and bio-accumulation property. Majority of them are recognized as endocrine disruptors. Fungi are ubiquitous in nature and employs efficient enzymatic machinery for the biotransformation and degradation of toxic, recalcitrant pollutants. This review critically discusses the organochlorine biotransformation process mediated by fungi and highlights the role of enzymatic system responsible for biotransformation, especially distribution of dehalogenase homologs among fungal classes. It also explores the potential use of fungal derived biomaterial, mainly chitosan as an adsorbing biomaterial for pesticides and heavy metals removal. Further, prospects of employing fungus to over-come the existing bioremediation limitations are discussed. The study highlights the potential scope of utilizing fungi for initial biotransformation purposes, preceding final biodegradation by bacterial species under environmental conditions. Supplementary Information The online version contains supplementary material available at 10.1007/s12088-021-00940-8.
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18
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Gogotya A, Nnolim NE, Digban TO, Okoh AI, Nwodo UU. Characterization of a thermostable and solvent-tolerant laccase produced by Streptomyces sp. LAO. Biotechnol Lett 2021; 43:1429-1442. [PMID: 33864196 DOI: 10.1007/s10529-021-03131-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Decaying wood samples were collected, and actinomycetes were isolated and screened for laccase production. The identity of the efficient laccase-producing isolate was confirmed by using a molecular approach. Fermentation conditions for laccase production were optimized, and laccase biochemical properties were studied. RESULTS Based on the 16S rRNA gene sequencing and phylogenetic analysis, the isolate coded as HWP3 was identified as Streptomyces sp. LAO. The time-course study showed that the isolate optimally produced laccase at 84 h with 40.58 ± 2.35 U/mL activity. The optimized physicochemical conditions consisted of pH 5.0, ferulic acid (0.04%; v/v), pine back (0.2 g/L), urea (1.0 g/L), and lactose (1 g/L). Streptomyces sp. LAO laccase was optimally active at pH and temperature of 8.0 and 90 °C, respectively, with remarkable pH and thermal stability. Furthermore, the enzyme had a sufficient tolerance for organic solvents after 16 h of preincubation, with laccase activity > 70%. Additionally, the laccase maintained considerable residual activity after pretreatment with 100 mM of chemical agents, including sodium dodecyl sulphate (69.93 ± 0.89%), ethylenediaminetetraacetic acid (93.1 ± 7.85%), NaN3 (96.28 ± 3.34%) and urea (106.03 ± 10.72%). CONCLUSION The laccase's pH and thermal stability; and robust catalytic efficiency in the presence of organic solvents suggest its industrial and biotechnological application potentials for the sustainable development of green chemistry.
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Affiliation(s)
- Asemahle Gogotya
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa
| | - Nonso E Nnolim
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa
| | - Tennison O Digban
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa
| | - Anthony I Okoh
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa.,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa
| | - Uchechukwu U Nwodo
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa. .,Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314 Eastern Cape, Alice, 5700, South Africa.
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19
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An alkaline thermostable laccase from termite gut associated strain of Bacillus stratosphericus. Int J Biol Macromol 2021; 179:270-278. [PMID: 33676982 DOI: 10.1016/j.ijbiomac.2021.02.205] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 02/20/2021] [Accepted: 02/27/2021] [Indexed: 02/01/2023]
Abstract
Laccase, an important oxidoreductase, is widely distributed in various organisms. Termites are known to decompose lignocellulose efficiently with the aid of gut microorganisms. However, few laccases have been characterized from termite or its gut microbes. We aimed to screen the strain capable of degrading lignocellulose from fungus-growing termites. In this study, Bacillus stratosphericus BCMC2 with lignocellulolytic activity was firstly isolated from the hindgut of fungus-growing termite Macrotermes barneyi. The laccase gene (BaCotA) was cloned both from the BCMC2 strain and termite intestinal metagenomic DNA. BaCotA was overexpressed in E. coli, and the recombinant BaCotA showed high specific activity (554.1 U/mg). BaCotA was thermostable with an optimum temperature of 70 °C, pH 5.0. Furthermore, BaCotA was resistant to alkali and organic solvents. The enzyme remained more than 70% residual activity at pH 8.0 for 120 min; and the organic solvents such as methanol, ethanol and acetone (10%) had no inhibitory effect on laccase activity. Additionally, BaCotA exhibited efficient decolorization ability towards indigo and crystal violet. The multiple enzymatic properties suggested the presented laccase as a potential candidate for industrial applications. Moreover, this study highlighted that termite intestine is a good resource for either new strains or enzymes.
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20
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Ezike TC, Udeh JO, Joshua PE, Ezugwu AL, Isiwu CV, Eze SO, Chilaka FC. Substrate specificity of a new laccase from Trametes polyzona WRF03. Heliyon 2021; 7:e06080. [PMID: 33537494 PMCID: PMC7841367 DOI: 10.1016/j.heliyon.2021.e06080] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/29/2020] [Accepted: 01/20/2021] [Indexed: 01/18/2023] Open
Abstract
Various aromatic compounds that are structurally analogous to lignin were tested as possible/preferred substrates for purified laccase from newly isolated white rote fungi, Trametes polyzona WRF03. The pH optima were tested using different substrates and kinetic studies were conducted at these pH optima. The pH optima in the presence of ABTS, α-naphthol, o-dianisidine, and catechol were 4.5 but 5.0 and 5.5 in the presence of guaiacol and pyrogallol, respectively. The initial velocities obtained from the kinetic study were analyzed using Graph Pad Prism 7 and Lineweaver-Burk plot to obtain kinetic constants (km and Vmax) which were used to calculate substrate specificity. Amongst all the substrates tested, ABTS had the highest specificity-constant (181.51 M−1s−1), and therefore, the most preferred substrate was followed by α-naphthol, o-dianisidine, guaiacol, pyrogallol, and catechol. Resorcinol, orcinol, and veratryl alcohol did not display any considerable chemical shift in the presence of Trametes polyzona WRF03 laccase. Also, oxidation of phenolic substrates appeared to be dependent on the nature of the substituent groups and their relative position on the aromatic nucleus. Since most of these substrates are structural analogs of lignin and many recalcitrant environmental pollutants, the enzyme may find application in delignification, treatment of wastewater containing dyes, and polycyclic aromatic hydrocarbons (PAHs).
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21
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Ren D, Wang Z, Jiang S, Yu H, Zhang S, Zhang X. Recent environmental applications of and development prospects for immobilized laccase: a review. Biotechnol Genet Eng Rev 2021; 36:81-131. [PMID: 33435852 DOI: 10.1080/02648725.2020.1864187] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Laccases have enormous potential as promising 'green' biocatalysts in environmental applications including wastewater treatment and polluted soil bioremediation. The catalytic oxidation reaction they perform uses only molecular oxygen without other cofactors, and the only product after the reaction is water. The immobilization of laccase offers several improvements such as protected activity and enhanced stability over free laccase. In addition, the reusability of immobilized laccase is adistinct advantage for future applications. This review covers the sources of and progress in laccase research, and discusses the different methodologies of laccase immobilization that have emerged in the recent 5-10 years, as well as its applications to environmental fields, and evaluates these emerging technologies. Abbreviations: (2,4,6-TCP): 2,4,6-trichlorophenol; (2,4-DCP): 2,4-dichlorophenol; (ABTS), 2,2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid); (ACE), acetaminophen; (BC-AS), almond shell; (BC-PM), pig manure; (BC-PW), pine wood; (BPA), bisphenol A; (BPA), bisphenol A; (BPF), bisphenol F; (BPS), bisphenol S; (C60), fullerene; (Ca-AIL), calcium-alginate immobilized laccase; (CBZ), carbamazepine; (CETY), cetirizine; (CHT-PGMA-PEI-Cu (II) NPs), Cu (II)-chelated chitosan nanoparticles; (CLEAs), cross-linked enzyme aggregates; (CMMC), carbon-based mesoporous magnetic composites; (COD), chemical oxygen demand; (CPH), ciprofloxacin hydrochloride; (CS), chitosan; (CTC), chlortetracycline; (Cu-AIL), copper-alginate immobilized laccase; (DBR K-4BL), Drimarene brilliant red K-4BL; (DCF), diclofenac; (E1),estrone; (E2), 17 β-estradiol; (EDC), 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride; (EDCs), endocrine disrupting chemicals; (EE2), 17α-ethinylestradiol; (EFMs), electrospun fibrous membranes; (FL), free laccase; (fsMP), fumed silica microparticles; (GA-CBs), GLU-crosslinked chitosan beads; (GA-CBs), glutaraldehyde-crosslinked chitosan beads; (GA-Zr-MOF), graphene aerogel-zirconium-metal organic framework; (GLU), glutaraldehyde; (GO), graphene oxide; (HMCs), hollow mesoporous carbon spheres; (HPEI/PES), hyperbranched polyethyleneimine/polyether sulfone; (IC), indigo carmine; (IL), immobilized laccase; (kcat), catalytic constant; (Km), Michealis constant; (M-CLEAs), Magnetic cross-linked enzyme aggregates; (MMSNPs-CPTS-IDA-Cu2+), Cu2+-chelated magnetic mesoporous silica nanoparticles; (MSS), magnetic mesoporous silica spheres; (MWNTs), multi-walled carbon nanotubes; (MWNTs), multi-walled carbon nanotubes; (NHS), N-hydroxy succinimide; (O-MWNTs), oxidized-MWNTs; (P(AAm-NIPA)), poly(acrylamide-N-isopropylacrylamide); (p(GMA)), poly(glycidyl methacrylate); (p(HEMA)), poly(hydroxyethyl methacrylate); (p(HEMA-g-GMA)-NH2, poly(glycidyl methacrylate) brush grafted poly(hydroxyethyl methacrylate); (PA6/CHIT), polyamide 6/chitosan; (PAC), powdered active carbon; (PAHs), polycyclic aromatic hydrocarbons; (PAM-CTS), chitosan grafted polyacrylamide hydrogel; (PAN/MMT/GO), polyacrylonitrile/montmorillonite/graphene oxide; (PAN/PVdF), polyacrylonitrile/polyvinylidene fluoride; (PEG), poly ethylene glycol; (PEI), Poly(ethyleneimine); (poly(4-VP)), poly(4-vinyl pyridine); (poly(GMA-MAA)), poly(glycidyl methacrylate-methacrylic acid); (PVA), polyvinyl alcohol; (RBBR), Remazol Brilliant Blue R; (SDE), simulated dye effluent; (semi-IPNs), semi-interpenetrating polymer networks; (TC), tetracycline; (TCH), tetracycline hydrochloride; (TCS), triclosan; (Vmax), maximum activity; (Zr-MOF, MMU), micro-mesoporous Zr-metal organic framework.
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Affiliation(s)
- Dajun Ren
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology , Wuhan, China.,Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology , Wuhan, Hubei, China
| | - Zhaobo Wang
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology , Wuhan, China.,Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology , Wuhan, Hubei, China
| | - Shan Jiang
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology , Wuhan, China.,Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology , Wuhan, Hubei, China
| | - Hongyan Yu
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology , Wuhan, China.,Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology , Wuhan, Hubei, China
| | - Shuqin Zhang
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology , Wuhan, China.,Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology , Wuhan, Hubei, China
| | - Xiaoqing Zhang
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology , Wuhan, China.,Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology , Wuhan, Hubei, China
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22
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Ezike TC, Ezugwu AL, Udeh JO, Eze SOO, Chilaka FC. Purification and characterisation of new laccase from Trametes polyzona WRF03. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2020; 28:e00566. [PMID: 33299811 PMCID: PMC7701954 DOI: 10.1016/j.btre.2020.e00566] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 11/03/2020] [Accepted: 11/19/2020] [Indexed: 11/05/2022]
Abstract
Trametes polyzona WRF03 produced high yield of true laccase. Trametes polyzona WRF03 laccase was relatively pH and temperature stable. Fe2+, sodium azide and sodium cyanide greatly inhibited laccase activity. Trametes polyzona WRF03 laccase decolorised many classes of synthetic dyes.
The molecular screening for laccase specific gene sequences in Trametes polyzona WRF03 (TpWRF03) using designed oligonucleotide primers analogous to the conserved sequences on the copper-binding regions of known laccases showed positive amplification with an amplicon size corresponding to 1500 bp. The purified TpWRF03 laccase (TpL) is a monomer with a molecular weight corresponding to 66 kDa. The enzyme had an optimal pH of 4.5 and temperature of 55 °C. TpL was most stable within pH of 5.5–6.5 and at a temperature range of 40–50 °C. Sodium azide, sodium cyanide and Fe2+ greatly inhibited the enzyme activity. TpL showed more than 50 % decolourisation efficiency on coomassie brilliant blue (72.35 %) and malachite green (57.84 %) but displayed low decolourisation efficiency towards Azure B (1.78 %) and methylene blue (0.38 %). The results showed that TpWRF03 produces high-yield of true laccase with robust properties for biotechnological applications.
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Affiliation(s)
| | - Arinze Linus Ezugwu
- Department of Biochemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Jerry Okwudili Udeh
- Department of Biochemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
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23
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Sun K, Cheng X, Yu J, Chen L, Wei J, Chen W, Wang J, Li S, Liu Q, Si Y. Isolation of Trametes hirsuta La-7 with high laccase-productivity and its application in metabolism of 17β-estradiol. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 263:114381. [PMID: 32203859 DOI: 10.1016/j.envpol.2020.114381] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/13/2020] [Accepted: 03/13/2020] [Indexed: 06/10/2023]
Abstract
Estrogens, which are extensive in the eco-environments, are a category of high-toxic emerging contaminants that induce metabolic disorders and even carcinogenic risks in wildlife and humans. Here we investigate whether fungus-secreted laccase can be used as a green catalyst to eliminate a representative estrogen, 17β-estradiol (E2). A white-rot fungus Trametes hirsuta La-7 with high laccase-productivity, was isolated from pig manure-contaminated soil. Extracellular laccase activity expressed by strain La-7 was 65.4 U·mL-1 for a 3 d inoculation under the optimal fermentation parameters. The concentrated-crude laccase from Trametes hirsuta La-7 (CC-ThLac) was capable of effectively metabolizing E2 at pH 4-6, and the apparent pseudo first-order reaction rate constant and half-life values were respectively 0.027-0.055 min-1 and 25.86-12.67 min (R2 > 0.98). The mass measurement of high-resolution mass spectrometry in combination with 13C-isotope labeling identified that the main by-products of E2 metabolism were dimers, trimers, and tetramers, which are consistent with radical-driven C-C and/or C-O-C covalent coupling pathway, involving the initial enzymatic production of phenoxy radical intermediates and then the successive oxidative-oligomerization of radical intermediates. The formation of oligomers dramatically reduced the estrogenic activity of E2. Additionally, CC-ThLac also exhibited high-efficiency metabolism capability toward E2 in the natural water and pig manure, with more than 94.4% and 91.0% of E2 having been metabolized, respectively. These findings provide a broad prospect for the clean biotechnological applications of Trametes hirsuta La-7 in estrogen-contaminated ecosystems.
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Affiliation(s)
- Kai Sun
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Xing Cheng
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Jialin Yu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Luojian Chen
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Jiajun Wei
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Wenjun Chen
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Jun Wang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Shunyao Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qingzhu Liu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Youbin Si
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China.
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Purification, Biochemical Characterization, and Facile Immobilization of Laccase from Sphingobacterium ksn-11 and its Application in Transformation of Diclofenac. Appl Biochem Biotechnol 2020; 192:831-844. [PMID: 32601857 DOI: 10.1007/s12010-020-03371-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/23/2020] [Indexed: 12/11/2022]
Abstract
An extracellular laccase enzyme secreted from Sphingobacterium ksn-11 was purified to electrophoretic homogeneity, showing a molecular weight of 90 kDa. The purified enzyme was monomeric in nature confirmed by sodium dodecyl gel electrophoresis. The optimum temperature and pH were found to be 40 °C and 4.5 respectively. The enzyme showed highest substrate specificity for 2,2 azino-bis (ethylthiozoline-6-sulfonate) (ABTS), followed by syringaldazine. The Km value for ABTS was 2.12 mM with a Vmax value of 33.33 U/mg which was higher when compared with syringaldazine and guaiacol substrates. Sodium azide and EDTA inhibited the activity by 30%, whereas presence of Ca2+ and iron increased activity by 50%. The purified enzyme was immobilized in sodium alginate-silicon dioxide-polyvinyl alcohol beads and evaluated for diclofenac transformation studies. LC-MS analysis confirmed that immobilized laccase transformed diclofenac to 4-OH diclofenac after 4 h of incubation. 45 % of diclofenac was able to transform even at 3rd cycle of immobilized laccase use. Therefore, immobilized laccase can be used to transform or degrade several recalcitrant compounds from industrial effluents.
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Sayyed RZ, Bhamare HM, Sapna, Marraiki N, Elgorban AM, Syed A, El-Enshasy HA, Dailin DJ. Tree bark scrape fungus: A potential source of laccase for application in bioremediation of non-textile dyes. PLoS One 2020; 15:e0229968. [PMID: 32497077 PMCID: PMC7272029 DOI: 10.1371/journal.pone.0229968] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 04/22/2020] [Indexed: 01/31/2023] Open
Abstract
Although laccase has been recognized as a wonder molecule and green enzyme, the use of low yielding fungal strains, poor production, purification, and low enzyme kinetics have hampered its large-scale application. Thus,this study aims to select high yielding fungal strains and optimize the production, purification, and kinetics of laccase of Aspergillus sp. HB_RZ4. The results obtained indicated that Aspergillus sp. HB_RZ4 produced a significantly large amount of laccase under meso-acidophilic shaking conditions in a medium containing glucose and yeast extract. A 25 μM CuSO4 was observed to enhance the enzyme yield. The enzyme was best purified on a Sephadex G-100 column. The purified enzyme resembled laccase of A. flavus. The kinetics of the purified enzyme revealed high substrate specificity and good velocity of reaction,using ABTS as a substrate. The enzyme was observed to be stable over various pH values and temperatures. The peptide structure of the purified enzyme was found to resemble laccase of A. kawachii IFO 4308. The fungus was observed to decolorize various dyes independent of the requirement of a laccase mediator system.Aspergillus sp. HB_RZ4 was observed to be a potent natural producer of laccase, and it decolorized the dyes even in the absence of a laccase mediator system. Thus, it can be used for bioremediation of effluent that contains non-textile dyes.
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Affiliation(s)
- R. Z. Sayyed
- Department of Microbiology, PSGVP Mandal’s Arts, Science and Commerce College, Shahada, India
| | - H. M. Bhamare
- Department of Biotechnology, SSVP Sansth’s Late Karmveer Dr. P. R. Ghogrey Science College, Dhule, India
| | - Sapna
- ICAR-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Najat Marraiki
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abdallah M. Elgorban
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
- Centre of Excellence in Biotechnology Research, King Saud University, Riyadh, Saudi Arabia
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Hesham Ali El-Enshasy
- Institute of Bioproduct Development, Universiti Teknologi Malaysia (UTM), Skudai, Johor Bahru, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Johor Bahru, Malaysia
- City of Scientific Research and Technology Applications, New Burg Al Arab, Alexandria, Egypt
| | - Daniel J. Dailin
- Institute of Bioproduct Development, Universiti Teknologi Malaysia (UTM), Skudai, Johor Bahru, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Johor Bahru, Malaysia
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Yang X, Wu Y, Zhang Y, Yang E, Qu Y, Xu H, Chen Y, Irbis C, Yan J. A Thermo-Active Laccase Isoenzyme From Trametes trogii and Its Potential for Dye Decolorization at High Temperature. Front Microbiol 2020; 11:241. [PMID: 32140151 PMCID: PMC7042201 DOI: 10.3389/fmicb.2020.00241] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 01/31/2020] [Indexed: 02/01/2023] Open
Abstract
A thermo-activation and thermostable laccase isoenzyme (Lac 37 II) produced by Trametes trogii S0301 at 37°C was purified to apparent homogeneity by anionic exchange chromatography and sephadex G-75 chromatography, with 12.3% of yeiled and a specific activity of 343.1 U mg-1. The molecular weight of the purified Lac 37 II was estimated to be approximately 56 kDa in 12% sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). The optimal pH and temperature for the protein was 2.7 and 60°C, respectively. The purified Lac 37 II showed higher resistance to all tested metal ions and organic solvents except for Fe2+ and Cd2+ at 37°C and the activity of the purified Lac 37 was significantly enhanced by Cu2+ at 50 mM. The K cat , K m , and K cat /K m of Lac 37 II were 2.977 s-1, 16.1 μM, and 184.9 s-1 μM-1, respecively, in the condition of pH 2.7 and 60°C using ABTS as a substrate. Peptide-mass fingerprinting analysis showed that the Lac 37 II matched to the gene-deduced sequences of lcc3 in T. trogii BAFC 463, other than Lcc1, Lcc 2, and Lcc 4. Compared with laccase prepared at 28°C, the onset of thermo-activation of Lac 37 II activity occurred at 30°C with an increase of 10%, and reached its maximum at the temperatures range of 40-60°C with an increase of about 40% of their original activity. Furthermore, Lac 37 II showed the efficient decolorization ability toward triphenylmethane dyes at 60°C, with decolorization rates of 100 and 99.1% for 25 mg L-1 malachite and crystal violet in 5 h, respectively, when hydroxybenzotriazole (HBT) was used as a mediator. In conclusion, it is the first time to report a thermo-activation laccase from a thermophilic T. trogii strain, which has a better enzyme property and higher decolorization ability among fungal laccases, and it also has a further application prospective in the field of biotechnology.
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Affiliation(s)
- Xulei Yang
- Laboratory of Bioconversion, Life Science and Technology College, Kunming University of Science and Technology, Kunming, China
| | - Yuanyuan Wu
- Laboratory of Bioconversion, Life Science and Technology College, Kunming University of Science and Technology, Kunming, China
| | - Yu Zhang
- Laboratory of Bioconversion, Life Science and Technology College, Kunming University of Science and Technology, Kunming, China
| | - En Yang
- Laboratory of Bioconversion, Life Science and Technology College, Kunming University of Science and Technology, Kunming, China
| | - Yuan Qu
- Laboratory of Bioconversion, Life Science and Technology College, Kunming University of Science and Technology, Kunming, China
| | - Huini Xu
- Laboratory of Bioconversion, Life Science and Technology College, Kunming University of Science and Technology, Kunming, China
| | - Yuhui Chen
- College of Life Science, Southwest Forest University, Kunming, China
| | - Chagan Irbis
- Laboratory of Bioconversion, Life Science and Technology College, Kunming University of Science and Technology, Kunming, China
| | - Jinping Yan
- Laboratory of Bioconversion, Life Science and Technology College, Kunming University of Science and Technology, Kunming, China
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Mohit E, Tabarzad M, Faramarzi MA. Biomedical and Pharmaceutical-Related Applications of Laccases. Curr Protein Pept Sci 2020; 21:78-98. [DOI: 10.2174/1389203720666191011105624] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 08/17/2019] [Accepted: 08/21/2019] [Indexed: 12/07/2022]
Abstract
The oxidation of a vast range of phenolic and non-phenolic substrates has been catalyzed by
laccases. Given a wide range of substrates, laccases can be applied in different biotechnological applications.
The present review was conducted to provide a broad context in pharmaceutical- and biomedical-
related applications of laccases for academic and industrial researchers. First, an overview of biological
roles of laccases was presented. Furthermore, laccase-mediated strategies for imparting antimicrobial
and antioxidant properties to different surfaces were discussed. In this review, laccase-mediated
mechanisms for endowing antimicrobial properties were divided into laccase-mediated bio-grafting of
phenolic compounds on lignocellulosic fiber, chitosan and catheters, and laccase-catalyzed iodination.
Accordingly, a special emphasis was placed on laccase-mediated functionalization for creating antimicrobials,
particularly chitosan-based wound dressings. Additionally, oxidative bio-grafting and oxidative
polymerization were described as the two main laccase-catalyzed reactions for imparting antioxidant
properties. Recent laccase-related studies were also summarized regarding the synthesis of antibacterial
and antiproliferative agents and the degradation of pharmaceuticals and personal care products.
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Affiliation(s)
- Elham Mohit
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Tabarzad
- Protein Technology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran
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Abstract
There is a high number of well characterized, commercially available laccases with different redox potentials and low substrate specificity, which in turn makes them attractive for a vast array of biotechnological applications. Laccases operate as batteries, storing electrons from individual substrate oxidation reactions to reduce molecular oxygen, releasing water as the only by-product. Due to society’s increasing environmental awareness and the global intensification of bio-based economies, the biotechnological industry is also expanding. Enzymes such as laccases are seen as a better alternative for use in the wood, paper, textile, and food industries, and they are being applied as biocatalysts, biosensors, and biofuel cells. Almost 140 years from the first description of laccase, industrial implementations of these enzymes still remain scarce in comparison to their potential, which is mostly due to high production costs and the limited control of the enzymatic reaction side product(s). This review summarizes the laccase applications in the last decade, focusing on the published patents during this period.
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Olajuyigbe FM, Adetuyi OY, Fatokun CO. Characterization of free and immobilized laccase from Cyberlindnera fabianii and application in degradation of bisphenol A. Int J Biol Macromol 2018; 125:856-864. [PMID: 30557644 DOI: 10.1016/j.ijbiomac.2018.12.106] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/10/2018] [Accepted: 12/12/2018] [Indexed: 01/15/2023]
Abstract
Recovery difficulty and inactivation of laccases are major challenges that hamper their application in biotechnology. In this study, laccase was purified from Cyberlindnera fabianii using ion-exchange and gel filtration chromatography with homogeneity confirmed by sodium dodecyl sulphate polyacrylamide gel electrophoresis. Purified laccase of 52 kDa was immobilized on calcium and copper alginate beads by entrapment method. Free and immobilized enzymes were characterized, and efficiency of bisphenol A (BPA) degradation was determined. pH optima for free and immobilized laccases were 5.0 and 6.0, respectively. Ca and Cu alginate immobilized laccase (Ca-AIL and Cu-AIL) had optimum activity at 60 °C and 50 °C, respectively while free laccase (FL) was at 40 °C. Km and Vmax of FL, Ca-AIL and Cu-AIL were 0.032 mM and 15 mM/min, 0.078 mM and 6.98 mM/min, and 0.091 mM and 5.61 mM/min, respectively. Remarkably, immobilized laccases had higher operational stability than FL over 21 d at 4°C. Reusability of immobilized laccase was effective for 3 cycles with residual activity above 70%. Notably, Ca-AIL and Cu-AIL exhibited 71% and 65.5% BPA degradation efficiency on 14 d. Results reveal good kinetic parameters, improved thermal stability and enhanced reusability of immobilized laccase from C. fabianii with potentials for various industrial applications and bioremediation.
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Affiliation(s)
- Folasade M Olajuyigbe
- Enzyme Biotechnology and Environmental Health Unit, Department of Biochemistry, Federal University of Technology, Akure 340252, Ondo State, Nigeria.
| | - Oluwafijimi Y Adetuyi
- Enzyme Biotechnology and Environmental Health Unit, Department of Biochemistry, Federal University of Technology, Akure 340252, Ondo State, Nigeria
| | - Cornelius O Fatokun
- Enzyme Biotechnology and Environmental Health Unit, Department of Biochemistry, Federal University of Technology, Akure 340252, Ondo State, Nigeria
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30
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Mtibaà R, Barriuso J, de Eugenio L, Aranda E, Belbahri L, Nasri M, Martínez MJ, Mechichi T. Purification and characterization of a fungal laccase from the ascomycete Thielavia sp. and its role in the decolorization of a recalcitrant dye. Int J Biol Macromol 2018; 120:1744-1751. [PMID: 30268749 DOI: 10.1016/j.ijbiomac.2018.09.175] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/20/2018] [Accepted: 09/26/2018] [Indexed: 01/25/2023]
Abstract
A laccase-producing ascomycete was isolated from arid soil in Tunisia. This fungus was identified as Thielavia sp. using the phylogenetic analysis of rDNA internal transcribed spacers. The extracellular laccase produced by the fungus was purified to electrophoretic homogeneity, showing a molecular mass around 70 kDa. The enzyme had an optimum pH of 5.0 and 6.0 for ABTS and 2,6‑DMP, respectively and it showed remarkable high thermal stability, showing its optimal temperature at 70 °C (against 2,6‑DMP). It presented slight inhibiting effect by EDTA, SDS and l‑cyst although this effect was more marked by sodium azide (0.1 mM). On the other hand, it showed tolerance to up to 300 mM NaCl, retaining around 50% of its activity at 900 mM. Among the metal ions tested on TaLac1, Mn2+ showed an activating effect. Their kinetic parameters Km and kcat were 23.7 μM and 4.14 s-1 for ABTS, and 24.3 μM and 3.46 s-1 towards 2,6‑DMP. The purified enzyme displayed greater efficiency in Remazol Brilliant Blue R decolorization (90%) in absence of redox mediator, an important property for biotechnological applications.
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Affiliation(s)
- Rim Mtibaà
- Laboratory of Enzyme Engineering and Microbiology, University of Sfax, National School of Engineers of Sfax, BP «1173», 3038 Sfax, Tunisia.
| | - Jorge Barriuso
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientίficas, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Laura de Eugenio
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientίficas, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Elisabet Aranda
- Department of Microbiology, Institute of Water Research, University of Granada, Calle Ramón y Cajal 4, E-18071 Granada, Spain
| | - Lasaad Belbahri
- Laboratory of Soil Biology, University of Neuchâtel, Rue Emile Argand 11, CH-2009 Neuchâtel, Switzerland
| | - Moncef Nasri
- Laboratory of Enzyme Engineering and Microbiology, University of Sfax, National School of Engineers of Sfax, BP «1173», 3038 Sfax, Tunisia
| | - María Jesùs Martínez
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientίficas, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Tahar Mechichi
- Laboratory of Enzyme Engineering and Microbiology, University of Sfax, National School of Engineers of Sfax, BP «1173», 3038 Sfax, Tunisia
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Purification and biochemical characterization of two isolated laccase isoforms from Agaricus bisporus CU13 and their potency in dye decolorization. Int J Biol Macromol 2018; 113:1142-1148. [DOI: 10.1016/j.ijbiomac.2018.03.043] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 03/07/2018] [Accepted: 03/11/2018] [Indexed: 11/21/2022]
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32
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Reda FM, Hassan NS, El-Moghazy AN. Decolorization of synthetic dyes by free and immobilized laccases from newly isolated strain Brevibacterium halotolerans N11 (KY883983). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.05.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Kumar M, Mishra A, Singh SS, Srivastava S, Thakur IS. Expression and characterization of novel laccase gene from Pandoraea sp. ISTKB and its application. Int J Biol Macromol 2018; 115:308-316. [PMID: 29665388 DOI: 10.1016/j.ijbiomac.2018.04.079] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 04/09/2018] [Accepted: 04/13/2018] [Indexed: 01/16/2023]
Abstract
In the present study, a non-blue laccase gene from previously reported lignin degrading bacterium, Pandoraea sp. ISTKB, was isolated, cloned and expressed in E. coli. Bioinformatics analysis of sequence discovered twin-arginine translocation signal sequence, copper binding motifs and presence of more random coil compare to helices and sheets in structure. The enzyme was found to be active on wide pH range and the pH optima was observed at pH 4 and 8 on substrate 2,2'-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) and 2,6-Dimethoxyphenol respectively. This is a thermophilic enzyme with maximum activity around 50-70 °C. The enzyme was further characterized by spectroscopy, reaction kinetics and effect of metal ions and inhibitors were studied. Compared to laccase alone; the treatment of dyes with laccase plus mediator resulted in enhanced decolorization of crystal violet, methylene blue, azure B, carmine and Congo red but the effect of mediator was not observed on trypan blue. Laccase treatment triggered polymerization on vanillic acid (VA) and kraft lignin (KL). Laccase plus mediator treatment reversed the polymerization and resulted in transformation or degradation of VA and KL. This thermophilic and alkalophilic non-blue laccase from Pandoraea sp. ISTKB is promising with prospective biotechnological application.
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Affiliation(s)
- Madan Kumar
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Arti Mishra
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Shashi Shekhar Singh
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Shaili Srivastava
- Amity School of Earth and Environmental Science, Amity University, Gurugram, India
| | - Indu Shekhar Thakur
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
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Xu X, Huang X, Liu D, Lin J, Ye X, Yang J. Inhibition of metal ions on Cerrena sp. laccase: Kinetic, decolorization and fluorescence studies. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2017.12.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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35
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Kumar VP, Kolte AP, Dhali A, Naik C, Sridhar M. Enhanced delignification of lignocellulosic substrates by Pichia GS115 expressed recombinant laccase. J GEN APPL MICROBIOL 2018; 64:180-189. [DOI: 10.2323/jgam.2017.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Vidya Pradeep Kumar
- Bioenergetics and Environmental Sciences Division, National Institute of Animal Nutrition and Physiology
| | - Atul P. Kolte
- Animal Nutrition Division, National Institute of Animal Nutrition and Physiology
| | - Arindam Dhali
- Bioenergetics and Environmental Sciences Division, National Institute of Animal Nutrition and Physiology
| | | | - Manpal Sridhar
- Bioenergetics and Environmental Sciences Division, National Institute of Animal Nutrition and Physiology
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36
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Yang J, Li W, Ng TB, Deng X, Lin J, Ye X. Laccases: Production, Expression Regulation, and Applications in Pharmaceutical Biodegradation. Front Microbiol 2017; 8:832. [PMID: 28559880 PMCID: PMC5432550 DOI: 10.3389/fmicb.2017.00832] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 04/24/2017] [Indexed: 01/08/2023] Open
Abstract
Laccases are a family of copper-containing oxidases with important applications in bioremediation and other various industrial and biotechnological areas. There have been over two dozen reviews on laccases since 2010 covering various aspects of this group of versatile enzymes, from their occurrence, biochemical properties, and expression to immobilization and applications. This review is not intended to be all-encompassing; instead, we highlighted some of the latest developments in basic and applied laccase research with an emphasis on laccase-mediated bioremediation of pharmaceuticals, especially antibiotics. Pharmaceuticals are a broad class of emerging organic contaminants that are recalcitrant and prevalent. The recent surge in the relevant literature justifies a short review on the topic. Since low laccase yields in natural and genetically modified hosts constitute a bottleneck to industrial-scale applications, we also accentuated a genus of laccase-producing white-rot fungi, Cerrena, and included a discussion with regards to regulation of laccase expression.
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Affiliation(s)
- Jie Yang
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
| | - Wenjuan Li
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
| | - Tzi Bun Ng
- Faculty of Medicine, School of Biomedical Sciences, The Chinese University of Hong KongShatin, Hong Kong
| | - Xiangzhen Deng
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
| | - Juan Lin
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
| | - Xiuyun Ye
- Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou UniversityFujian, China
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