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Zhao C, Huang W, Su J, Zhang X, Xue J, Zhang C, Han J, Zhou Y, Wang Y. Purification and characterization of recombinant human superoxide dismutase integrated with resilin-like polypeptide. Protein Expr Purif 2024; 222:106535. [PMID: 38901714 DOI: 10.1016/j.pep.2024.106535] [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: 01/24/2024] [Revised: 06/10/2024] [Accepted: 06/18/2024] [Indexed: 06/22/2024]
Abstract
Human superoxide dismutase (hSOD1) plays an important role in the aerobic metabolism and free radical eliminating process in the body. However, the production of existing SOD faces problems such as complex purification methods, high costs, and poor product stability. This experiment achieved low-cost, rapid, and simple purification of hSOD1 through ammonium sulfate precipitation method and heat resistance of recombinant protein. We constructed a recombinant protein hSOD1-LR containing a resilin-like polypeptide tag and expressed it. The interest protein was purified by ammonium sulfate precipitation method, and the results showed that the purification effect of 1.5 M (NH4)2SO4 was the best, with an enzyme activity recovery rate of 80 % after purification. Then, based on its thermal stability, further purification of the interest protein at 60 °C revealed a purification fold of up to 24 folds, and the purification effect was similar to that of hSOD1-6xHis purified by nickel column affinity chromatography. The stability of hSOD1-LR showed that the recombinant protein hSOD1-LR has better stability than hSOD-6xHis. hSOD1-LR can maintain 76.57 % activity even after 150 min of reaction at 70 °C. At same time, hSOD1-LR had activity close to 80 % at pH < 5, indicating good acid resistance. In addition, after 28 days of storage at 4 °C and 40 °C, hSOD1-LR retained 92 % and 87 % activity, respectively. Therefore, the method of purifying hSOD1-LR through salt precipitation may have positive implications for the study of SOD purification.
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Affiliation(s)
- Chengli Zhao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Wenrui Huang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Jiayi Su
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Xinshuang Zhang
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Jingli Xue
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Cailiang Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Juan Han
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Yang Zhou
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - Yun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China.
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Hamre AG, Al-Sadawi R, Johannesen KM, Bisarro B, Kjendseth ÅR, Leiros HKS, Sørlie M. Initial characterization of an iron superoxide dismutase from Thermobifida fusca. J Biol Inorg Chem 2023; 28:689-698. [PMID: 37725277 PMCID: PMC10520107 DOI: 10.1007/s00775-023-02019-9] [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: 11/16/2022] [Accepted: 08/24/2023] [Indexed: 09/21/2023]
Abstract
Superoxide dismutases (SODs) are enzymes that catalyze the dismutation of the superoxide radical anion into O2 and H2O2 in a two-step reaction. They are ubiquitous to all forms of life and four different types of metal centers are detected, dividing this class of enzymes into Cu-/Zn-, Ni-, Mn-, and Fe-SODs. In this study, a superoxide dismutase from the thermophilic bacteria Thermobifida fusca (TfSOD) was cloned and expressed before the recombinant enzyme was characterized. The enzyme was found to be active for superoxide dismutation measured by inhibition of cytochrome c oxidation and the inhibition of the autoxidation of pyrogallol. Its pH-optimum was determined to be 7.5, while it has a broad temperature optimum ranging from 20 to 90 °C. Combined with the Tm that was found to be 78.5 ± 0.5 °C at pH 8.0, TfSOD can be defined as a thermostable enzyme. Moreover, the crystal structure of TfSOD was determined and refined to 1.25 Å resolution. With electron paramagnetic resonance spectroscopy, it was confirmed that iron is the metal co-factor of TfSOD. The cell potential (Em) for the TfSOD-Fe3+/TfSOD-Fe2+ redox couple was determined to be 287 mV.
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Affiliation(s)
- Anne Grethe Hamre
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, PO 5003, 1432, Ås, Norway
| | - Rim Al-Sadawi
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, PO 5003, 1432, Ås, Norway
| | - Kirsti Merete Johannesen
- Department of Chemistry, Faculty of Science and Technology, UiT The Arctic University of Norway, 9037, Tromsö, Norway
| | - Bastien Bisarro
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, PO 5003, 1432, Ås, Norway
| | - Åsmund Røhr Kjendseth
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, PO 5003, 1432, Ås, Norway
| | - Hanna-Kirsti S Leiros
- Department of Chemistry, Faculty of Science and Technology, UiT The Arctic University of Norway, 9037, Tromsö, Norway
| | - Morten Sørlie
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, PO 5003, 1432, Ås, Norway.
- Department for Physics and Technology, Faculty of Science and Technology, UiT The Arctic University of Norway, 9037, Tromsö, Norway.
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Dong X, Wang W, Li S, Han H, Lv P, Yang C. Thermoacidophilic Alicyclobacillus Superoxide Dismutase: Good Candidate as Additives in Food and Medicine. Front Microbiol 2021; 12:577001. [PMID: 33815303 PMCID: PMC8014015 DOI: 10.3389/fmicb.2021.577001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 02/26/2021] [Indexed: 11/30/2022] Open
Abstract
Thermoacidophilic Alicyclobacillus strains attract great interests as the resource of thermostable or acidic enzymes. In this study, a putative gene encoding superoxide dismutase (AaSOD) was identified in a thermoacidophilic Alicyclobacillus strain. With a 16-fold activity observed, the AaSOD activity expressing in the medium of manganese enrichment was much higher than that in the iron medium. In addition, the purified AaSOD can be reconstituted exclusively with either Fe2+ or Mn2+, with its Mn-bound protein showing 25-fold activity than that of Fe-bound form. The optimal temperature for AaSOD reaction was 35°C, and was highly stable at any certain temperature up to 80°C. Of particular interest, the enzyme is found to be very stable across a wide pH range spanning from 2.0 to 10.0, which confers its robust stability in the acidic stomach environment and implies striking potentials as food additive and for medical use.
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Affiliation(s)
- Xueqian Dong
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao, China.,Shandong Food Ferment Industry Research & Design Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Wei Wang
- Shandong Food Ferment Industry Research & Design Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Shannan Li
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao, China
| | - Hongyu Han
- Shandong Food Ferment Industry Research & Design Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Peiwen Lv
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao, China
| | - Chunyu Yang
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao, China
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Bhatia K, Mal G, Bhar R, Jyoti, Attri C, Seth A. Purification and characterization of thermostable superoxide dismutase from Anoxybacillus gonensis KA 55 MTCC 12684. Int J Biol Macromol 2018; 117:1133-1139. [DOI: 10.1016/j.ijbiomac.2018.06.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 05/25/2018] [Accepted: 06/07/2018] [Indexed: 12/20/2022]
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Guo FX, E SJ, Liu SA, Chen J, Li DC. Purification and characterization of a thermostable MnSOD from the thermophilic fungusChaetomium thermophilum. Mycologia 2017; 100:375-80. [DOI: 10.3852/06-111r] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fang-xian Guo
- Department of Environmental Biology, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Shi-jin E
- Department of Environmental Biology, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Shou-an Liu
- Department of Environmental Biology, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Jing Chen
- Department of Environmental Biology, Shandong Agricultural University, Taian, Shandong, 271018, China
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Unique Characteristics of Recombinant Hybrid Manganese Superoxide Dismutase from Staphylococcus equorum and S. saprophyticus. Protein J 2016; 35:136-44. [DOI: 10.1007/s10930-016-9650-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Yang E, Yi S, Bai F, Niu D, Zhong J, Wu Q, Chen S, Zhou R, Wang F. Cloning, Characterization and Expression Pattern Analysis of a Cytosolic Copper/Zinc Superoxide Dismutase (SaCSD1) in a Highly Salt Tolerant Mangrove (Sonneratia alba). Int J Mol Sci 2015; 17:ijms17010004. [PMID: 26703583 PMCID: PMC4730251 DOI: 10.3390/ijms17010004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/22/2015] [Accepted: 11/26/2015] [Indexed: 11/16/2022] Open
Abstract
Mangroves are critical marine resources for their remarkable ability to tolerate seawater. Antioxidant enzymes play an especially significant role in eliminating reactive oxygen species and conferring abiotic stress tolerance. In this study, a cytosolic copper/zinc superoxide dismutase (SaCSD1) cDNA of Sonneratia alba, a mangrove species with high salt tolerance, was successfully cloned and then expressed in Escherichia coli Rosetta-gami (designated as SaCSD1). SaCSD1 comprised a complete open reading frame (ORF) of 459 bp which encoded a protein of 152 amino acids. Its mature protein is predicted to be 15.32 kDa and the deduced isoelectric point is 5.78. SaCSD1 has high sequence similarity (85%-90%) with the superoxide dismutase (CSD) of some other plant species. SaCSD1 was expressed with 30.6% yield regarding total protein content after being introduced into the pET-15b (Sma I) vector for expression in Rosetta-gami and being induced with IPTG. After affinity chromatography on Ni-NTA, recombinant SaCSD1 was obtained with 3.2-fold purification and a specific activity of 2200 U/mg. SaCSD1 showed good activity as well as stability in the ranges of pH between 3 and 7 and temperature between 25 and 55 °C. The activity of recombinant SaCSD1 was stable in 0.25 M NaCl, Dimethyl Sulphoxide (DMSO), glycerol, and chloroform, and was reduced to a great extent in β-mercaptoethanol, sodium dodecyl sulfate (SDS), H₂O2, and phenol. Moreover, the SaCSD1 protein was very susceptive to pepsin digestion. Real-time Quantitative Polymerase Chain Reaction (PCR) assay demonstrated that SaCSD1 was expressed in leaf, stem, flower, and fruit organs, with the highest expression in fruits. Under 0.25 M and 0.5 M salt stress, the expression of SaCSD1 was down-regulated in roots, but up-regulated in leaves.
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Affiliation(s)
- Enze Yang
- College of Pharmacy, Jinan University, Guangzhou 510632, China.
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China.
| | - Shanze Yi
- College of Pharmacy, Jinan University, Guangzhou 510632, China.
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China.
| | - Fang Bai
- School of Life Sciences, Shenzhen University, Shenzhen 518060, China.
| | - Dewei Niu
- College of Pharmacy, Jinan University, Guangzhou 510632, China.
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China.
| | - Junjie Zhong
- College of Pharmacy, Jinan University, Guangzhou 510632, China.
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China.
| | - Qiuhong Wu
- College of Pharmacy, Jinan University, Guangzhou 510632, China.
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China.
| | - Shufang Chen
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Renchao Zhou
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Feng Wang
- College of Pharmacy, Jinan University, Guangzhou 510632, China.
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China.
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A novel mechanism of protein thermostability: a unique N-terminal domain confers heat resistance to Fe/Mn-SODs. Sci Rep 2014; 4:7284. [PMID: 25445927 PMCID: PMC4250934 DOI: 10.1038/srep07284] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 11/14/2014] [Indexed: 11/22/2022] Open
Abstract
Superoxide dismutases (SODs), especially thermostable SODs, are widely applied in medical treatments, cosmetics, food, agriculture, and other industries given their excellent antioxidant properties. A novel thermostable cambialistic SOD from Geobacillus thermodenitrificans NG80-2 exhibits maximum activity at 70°C and high thermostability over a broad range of temperatures (20–80°C). Unlike other reported SODs, this enzyme contains an extra repeat-containing N-terminal domain (NTD) of 244 residues adjacent to the conserved functional SODA domain. Deletion of the NTD dramatically decreased its optimum active temperature (OAT) to 30°C and also impaired its thermostability. Conversely, appending the NTD to a mesophilic counterpart from Bacillus subtilis led to a moderately thermophilic enzyme (OAT changed from 30 to 55°C) with improved heat resistance. Temperature-dependant circular dichroism analysis revealed the enhanced conformational stability of SODs fused with this NTD. Furthermore, the NTD also contributes to the stress resistance of host proteins without altering their metal ion specificity or oligomerisation form except for a slight effect on their pH profile. We therefore demonstrate that the NTD confers outstanding thermostability to the host protein. To our knowledge, this is the first discovery of a peptide capable of remarkably improving protein thermostability and provides a novel strategy for bioengineering thermostable SODs.
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Molecular characterization of a recombinant manganese superoxide dismutase from Lactococcus lactis M4. BIOMED RESEARCH INTERNATIONAL 2014; 2014:469298. [PMID: 24592392 PMCID: PMC3921932 DOI: 10.1155/2014/469298] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 10/12/2013] [Accepted: 11/03/2013] [Indexed: 11/18/2022]
Abstract
A superoxide dismutase (SOD) gene of Lactococcus lactis M4 was cloned and expressed in a prokaryotic system. Sequence analysis revealed an open reading frame of 621 bp which codes for 206 amino acid residues. Expression of sodA under T7 promoter exhibited a specific activity of 4967 U/mg when induced with 1 mM of isopropyl-β-D-thiogalactopyranoside. The recombinant SOD was purified to homogeneity by immobilised metal affinity chromatography and Superose 12 gel filtration chromatography. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis and western blot analyses of the recombinant SOD detected a molecular mass of approximately 27 kDa. However, the SOD was in dimer form as revealed by gel filtration chromatography. The purified recombinant enzyme had a pI of 4.5 and exhibited maximal activity at 25°C and pH 7.2. It was stable up to 45°C. The insensitivity of this lactococcal SOD to cyanide and hydrogen peroxide established that it was a MnSOD. Although it has 98% homology to SOD of L. lactis IL1403, this is the first elucidated structure of lactococcal SOD revealing active sites containing the catalytic manganese coordinated by four ligands (H-27, H-82, D-168, and H-172).
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10
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Cloning and characterization of a new manganese superoxide dismutase from deep-sea thermophile Geobacillus sp. EPT3. World J Microbiol Biotechnol 2013; 30:1347-57. [DOI: 10.1007/s11274-013-1536-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 10/21/2013] [Indexed: 10/26/2022]
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11
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Detection and Characterisation of Mutations Responsible for Allele-Specific Protein Thermostabilities at the Mn-Superoxide Dismutase Gene in the Deep-Sea Hydrothermal Vent Polychaete Alvinella pompejana. J Mol Evol 2013; 76:295-310. [DOI: 10.1007/s00239-013-9559-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 03/27/2013] [Indexed: 12/19/2022]
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Mandelli F, Franco Cairo J, Citadini A, Büchli F, Alvarez T, Oliveira R, Leite V, Paes Leme A, Mercadante A, Squina F. The characterization of a thermostable and cambialistic superoxide dismutase from Thermus filiformis. Lett Appl Microbiol 2013; 57:40-6. [DOI: 10.1111/lam.12071] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 03/15/2013] [Accepted: 03/15/2013] [Indexed: 01/06/2023]
Affiliation(s)
- F. Mandelli
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE); do Centro Nacional de Pesquisa em Energia e Materiais (CNPEM); Campinas Brazil
- Departamento de Ciência de Alimentos da Faculdade de Engenharia de Alimentos; UNICAMP; Campinas Brazil
| | - J.P.L. Franco Cairo
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE); do Centro Nacional de Pesquisa em Energia e Materiais (CNPEM); Campinas Brazil
| | - A.P.S. Citadini
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE); do Centro Nacional de Pesquisa em Energia e Materiais (CNPEM); Campinas Brazil
| | - F. Büchli
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE); do Centro Nacional de Pesquisa em Energia e Materiais (CNPEM); Campinas Brazil
| | - T.M. Alvarez
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE); do Centro Nacional de Pesquisa em Energia e Materiais (CNPEM); Campinas Brazil
| | - R.J. Oliveira
- Departamento de Física; Instituto de Biociências, Letras e Ciências Exatas; Universidade Estadual Paulista; São José do Rio Preto Brazil
| | - V.B.P. Leite
- Departamento de Física; Instituto de Biociências, Letras e Ciências Exatas; Universidade Estadual Paulista; São José do Rio Preto Brazil
| | - A.F. Paes Leme
- Laboratório Nacional de Biociências (LNBio); do Centro Nacional de Pesquisa em Energia e Materiais (CNPEM); Campinas Brazil
| | - A.Z. Mercadante
- Departamento de Ciência de Alimentos da Faculdade de Engenharia de Alimentos; UNICAMP; Campinas Brazil
| | - F.M. Squina
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE); do Centro Nacional de Pesquisa em Energia e Materiais (CNPEM); Campinas Brazil
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Cheng GY, Liu J, Tao MX, Lu CM, Wu GR. Activity, thermostability and isozymes of superoxide dismutase in 17 edible mushrooms. J Food Compost Anal 2012. [DOI: 10.1016/j.jfca.2012.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Chambergo FS, Valencia EY, Ferreira-Júnior JR, Camilo CM, Campana PT. Conformational stability of recombinant manganese superoxide dismutase from the filamentous fungus Trichoderma reesei. Int J Biol Macromol 2012; 50:19-24. [DOI: 10.1016/j.ijbiomac.2011.09.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 09/14/2011] [Accepted: 09/14/2011] [Indexed: 11/27/2022]
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Expression of a novel thermostable Cu, Zn-superoxide dismutase from Chaetomium thermophilum in Pichia pastoris and its antioxidant properties. Biotechnol Lett 2011; 33:1127-32. [DOI: 10.1007/s10529-011-0543-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Accepted: 01/20/2011] [Indexed: 01/23/2023]
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Areekit S, Kanjanavas P, Khawsak P, Pakpitchareon A, Potivejkul K, Chansiri G, Chansiri K. Cloning, expression, and characterization of thermotolerant manganese superoxide dismutase from Bacillus sp. MHS47. Int J Mol Sci 2011; 12:844-56. [PMID: 21340017 PMCID: PMC3039983 DOI: 10.3390/ijms12010844] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 01/11/2011] [Accepted: 01/21/2011] [Indexed: 11/28/2022] Open
Abstract
A superoxide dismutase gene from thermotolerant Bacillus sp. MHS47 (MnSOD47) was cloned, sequenced, and expressed. The gene has an open reading frame of 612 bp, corresponding to 203 deduced amino acids, with high homology to the amino acid sequences of B. thuringiensis (accession no. EEN01322), B. anthracis (accession no. NP_846724), B. cereus (accession no. ZP_04187911), B. weihenstephanensis (accession no. YP_001646918), and B. pseudomycoides. The conserved manganese-binding sites (H28, H83, D165, and H169) show that MnSOD47 has the specific characteristics of the manganese superoxide dismutase (MnSOD) enzymes. MnSOD47 expressed an enzyme with a molecular weight of approximately 22.65 kDa and a specific activity of 3537.75 U/mg. The enzyme is active in the pH range 7–8.5, with an optimum pH of 7.5, and at temperatures in the range 30–45 °C, with an optimum temperature of 37 °C. Tests of inhibitors and metal ions indicated that the enzyme activity is inhibited by sodium azide, but not by hydrogen peroxide or potassium cyanide. These data should benefit future studies of MnSODs in other microorganisms and the biotechnological production of MnSOD47, and could also be used to develop a biosensor for the detection of antioxidants and free radical activity. In the future, this basic knowledge could be applicable to the detection of cancer risks in humans and therapeutic treatments.
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Affiliation(s)
- Supatra Areekit
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok 10110, Thailand; E-Mails: (S.A.); (P.K.); (A.P.)
| | - Pornpimon Kanjanavas
- Department of Biology, Faculty of Science and Technology, Rambhai Barni Rajabhat University, Chanthaburi 22000, Thailand; E-Mail:
| | - Paisarn Khawsak
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok 10110, Thailand; E-Mails: (S.A.); (P.K.); (A.P.)
| | - Arda Pakpitchareon
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok 10110, Thailand; E-Mails: (S.A.); (P.K.); (A.P.)
| | - Kajeenart Potivejkul
- Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand; E-Mail:
| | - Gaysorn Chansiri
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; E-Mail:
| | - Kosum Chansiri
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok 10110, Thailand; E-Mails: (S.A.); (P.K.); (A.P.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +662-664-1000(4605); Fax: +662-664-1000(4618)
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Liu J, Yin M, Zhu H, Lu J, Cui Z. Purification and characterization of a hyperthermostable Mn-superoxide dismutase from Thermus thermophilus HB27. Extremophiles 2011; 15:221-6. [DOI: 10.1007/s00792-010-0350-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Accepted: 12/08/2010] [Indexed: 11/28/2022]
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19
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A novel, thermostable manganese-containing superoxide dismutase from Bacillus licheniformis. Biotechnol Lett 2010; 32:1893-6. [DOI: 10.1007/s10529-010-0368-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Accepted: 07/28/2010] [Indexed: 11/28/2022]
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20
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García Echauri SA, Gidekel M, Moraga AG, Ordóñez LG, Rojas Contreras JA, Barba de la Rosa AP, De León Rodríguez A. Heterologous expression of a novel psychrophilic Cu/Zn superoxide dismutase from Deschampsia antarctica. Process Biochem 2009. [DOI: 10.1016/j.procbio.2009.04.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Cloning, expression, and characterization of thermostable Manganese superoxide dismutase from Thermoascus aurantiacus var. levisporus. J Microbiol 2009; 47:123-30. [DOI: 10.1007/s12275-008-0217-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2008] [Accepted: 12/01/2008] [Indexed: 10/21/2022]
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22
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Wang X, Yang H, Ruan L, Liu X, Li F, Xu X. Cloning and characterization of a thermostable superoxide dismutase from the thermophilic bacterium Rhodothermus sp. XMH10. J Ind Microbiol Biotechnol 2007; 35:133-9. [DOI: 10.1007/s10295-007-0274-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2007] [Accepted: 10/10/2007] [Indexed: 10/22/2022]
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