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Gadallah EE, El-Borai AM, El-Aassar SA, Beltagy EA. Purification, characterization, immobilization and applications of an enzybiotic β-1,3-1,4-glucanase produced from halotolerant marine Halomonas meridiana ES021. World J Microbiol Biotechnol 2023; 39:89. [PMID: 36740637 PMCID: PMC9899757 DOI: 10.1007/s11274-023-03527-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 01/17/2023] [Indexed: 02/07/2023]
Abstract
Extracellular β-1,3-1,4-glucanase-producing strain Halomonas meridiana ES021 was isolated from Gabal El-Zeit off shore, Red Sea, Egypt. The Extracellular enzyme was partially purified by precipitation with 75% acetone followed by anion exchange chromatography on DEAE-cellulose, where a single protein band was determined with molecular mass of approximately 72 kDa. The Km value was 0.62 mg β-1,3-1,4-glucan/mL and Vmax value was 7936 U/mg protein. The maximum activity for the purified enzyme was observed at 40 °C, pH 5.0, and after 10 min of the reaction. β-1,3-1,4-glucanase showed strong antibacterial effect against Bacillus subtilis, Streptococcus agalactiae and Vibrio damsela. It also showed antifungal effect against Penicillium sp. followed by Aspergillus niger. No toxicity was observed when tested on Artemia salina. Semi-purified β-1,3-1,4-glucanase was noticed to be effective in clarification of different juices at different pH values and different time intervals. The maximum clarification yields were 51.61% and 66.67% on mango juice at 40 °C and pH 5.3 for 2 and 4 h, respectively. To our knowledge, this is the first report of β-1,3-1,4-glucanase enzyme from halotolerant Halomonas species.
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Affiliation(s)
- Eman E Gadallah
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Aliaa M El-Borai
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Samy A El-Aassar
- Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Ehab A Beltagy
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt
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Directed mutation of β-glucanases from probiotics to enhance enzymatic activity, thermal and pH stability. Arch Microbiol 2020; 202:1749-1756. [DOI: 10.1007/s00203-020-01886-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/27/2020] [Accepted: 04/11/2020] [Indexed: 12/23/2022]
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Choudhury CK, Tu S, Luzinov I, Minko S, Kuksenok O. Designing Highly Thermostable Lysozyme–Copolymer Conjugates: Focus on Effect of Polymer Concentration. Biomacromolecules 2018. [DOI: 10.1021/acs.biomac.8b00027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Chandan Kumar Choudhury
- Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Sidong Tu
- Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Igor Luzinov
- Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Sergiy Minko
- Nanostructured Materials Laboratory, The University of Georgia, Athens, Georgia 30602, United States
| | - Olga Kuksenok
- Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
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Niu C, Liu C, Li Y, Zheng F, Wang J, Li Q. Production of a thermostable 1,3-1,4-β-glucanase mutant in Bacillus subtilis WB600 at a high fermentation capacity and its potential application in the brewing industry. Int J Biol Macromol 2018; 107:28-34. [DOI: 10.1016/j.ijbiomac.2017.08.139] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/09/2017] [Accepted: 08/25/2017] [Indexed: 12/14/2022]
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Yadavalli NS, Borodinov N, Choudhury CK, Quiñones-Ruiz T, Laradji AM, Tu S, Lednev IK, Kuksenok O, Luzinov I, Minko S. Thermal Stabilization of Enzymes with Molecular Brushes. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03138] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Nataraja S. Yadavalli
- Nanostructured
Materials Laboratory, The University of Georgia, Athens, Georgia 30602, United States
| | - Nikolay Borodinov
- Department
of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Chandan K. Choudhury
- Department
of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Tatiana Quiñones-Ruiz
- Department
of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States
| | - Amine M. Laradji
- Nanostructured
Materials Laboratory, The University of Georgia, Athens, Georgia 30602, United States
| | - Sidong Tu
- Department
of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Igor K. Lednev
- Department
of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States
| | - Olga Kuksenok
- Department
of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Igor Luzinov
- Department
of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
| | - Sergiy Minko
- Nanostructured
Materials Laboratory, The University of Georgia, Athens, Georgia 30602, United States
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Baek SC, Ho TH, Lee HW, Jung WK, Gang HS, Kang LW, Kim H. Improvement of enzyme activity of β-1,3-1,4-glucanase from Paenibacillus sp. X4 by error-prone PCR and structural insights of mutated residues. Appl Microbiol Biotechnol 2017; 101:4073-4083. [PMID: 28180917 DOI: 10.1007/s00253-017-8145-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 01/16/2017] [Accepted: 01/22/2017] [Indexed: 11/29/2022]
Abstract
β-1,3-1,4-Glucanase (BGlc8H) from Paenibacillus sp. X4 was mutated by error-prone PCR or truncated using termination primers to improve its enzyme properties. The crystal structure of BGlc8H was determined at a resolution of 1.8 Å to study the possible roles of mutated residues and truncated regions of the enzyme. In mutation experiments, three clones of EP 2-6, 2-10, and 5-28 were finally selected that exhibited higher specific activities than the wild type when measured using their crude extracts. Enzyme variants of BG2-6, BG2-10, and BG5-28 were mutated at two, two, and six amino acid residues, respectively. These enzymes were purified homogeneously by Hi-Trap Q and CHT-II chromatography. Specific activity of BG5-28 was 2.11-fold higher than that of wild-type BGwt, whereas those of BG2-6 and BG2-10 were 0.93- and 1.19-fold that of the wild type, respectively. The optimum pH values and temperatures of the variants were nearly the same as those of BGwt (pH 5.0 and 40 °C, respectively). However, the half-life of the enzyme activity and catalytic efficiency (k cat/K m) of BG5-28 were 1.92- and 2.12-fold greater than those of BGwt at 40 °C, respectively. The catalytic efficiency of BG5-28 increased to 3.09-fold that of BGwt at 60 °C. These increases in the thermostability and catalytic efficiency of BG5-28 might be useful for the hydrolysis of β-glucans to produce fermentable sugars. Of the six mutated residues of BG5-28, five residues were present in mature BGlc8H protein, and two of them were located in the core scaffold of BGlc8H and the remaining three residues were in the substrate-binding pocket forming loop regions. In truncation experiments, three forms of C-terminal truncated BGlc8H were made, which comprised 360, 286, and 215 amino acid residues instead of the 409 residues of the wild type. No enzyme activity was observed for these truncated enzymes, suggesting the complete scaffold of the α6/α6-double-barrel structure is essential for enzyme activity.
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Affiliation(s)
- Seung Cheol Baek
- Department of Pharmacy, Sunchon National University, Suncheon, 57922, Republic of Korea.,Department of Agricultural Chemistry, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Thien-Hoang Ho
- Department of Biological Sciences, Konkuk University, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Hyun Woo Lee
- Department of Pharmacy, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Won Kyeong Jung
- Research Institute of Life Pharmaceutical Sciences, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Hyo-Seung Gang
- Department of Agricultural Chemistry, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Lin-Woo Kang
- Department of Biological Sciences, Konkuk University, Gwangjin-gu, Seoul, 05029, Republic of Korea.
| | - Hoon Kim
- Department of Pharmacy, Sunchon National University, Suncheon, 57922, Republic of Korea. .,Research Institute of Life Pharmaceutical Sciences, Sunchon National University, Suncheon, 57922, Republic of Korea.
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Niu C, Zhu L, Hill A, Alex Speers R, Li Q. Construction of a highly thermostable 1,3-1,4-β-glucanase by combinational mutagenesis and its potential application in the brewing industry. Biotechnol Lett 2016; 39:113-122. [DOI: 10.1007/s10529-016-2212-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 09/08/2016] [Indexed: 10/21/2022]
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