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Zhang W, Zhang Y, Lu Y, Herman RA, Zhang S, Hu Y, Zhao W, Wang J, You S. More efficient barley malting under catalyst: thermostability improvement of a β-1,3-1,4-glucanase through surface charge engineering with higher activity. Enzyme Microb Technol 2022; 162:110151. [DOI: 10.1016/j.enzmictec.2022.110151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/22/2022] [Accepted: 10/25/2022] [Indexed: 11/25/2022]
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Yu WQ, Zheng GP, Qiu DW, Yan FC, Liu WZ, Liu WX. Draft genome sequence, disease-resistance genes, and phenotype of a Paenibacillus terrae strain (NK3-4) with the potential to control plant diseases. Genome 2018; 61:725-734. [PMID: 30184440 DOI: 10.1139/gen-2018-0113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Paenibacillus terrae NK3-4 is a plant growth-promoting rhizobacterium that may be useful for controlling plant diseases. We conducted a genomic analysis and identified the genes mediating antimicrobial functions. Additionally, an extracellular antifungal protein component was isolated and identified. The draft genome sequence was assembled into 54 contigs, with 5 458 568 bp and a G+C content of 47%. Moreover, 4 690 015 bp encoded 5090 proteins, 7 rRNAs, and 54 tRNAs. Forty-four genes involved in antimicrobial functions were detected. They mainly encode 19 non-ribosomal peptide synthetases (NRPSs); one polyketide synthase/NRPSs hybrid enzyme; four Zn-dependent metalloproteases; three antilisterial bacteriocin subtilosin biosynthesis proteins (AlbA); four serine proteases; five pectate lyases; three beta-glucanases; and four 1,4-beta-xylanases. These include four novel NRPSs that have not been found in any species of Paenibacillus. Furthermore, five proteins exhibiting antifungal activity were identified from the antifungal extracellular protein component based on MS/MS and the strain NK3-4 predicted protein library. On the basis of these features, we propose that strain NK3-4 represents a promising biocontrol agent for protecting plant from diseases. The draft genome sequence described herein may provide the genetic basis for the characterization of the molecular mechanisms underlying the biocontrol functions. It may also facilitate the development of rational strategies for improving the strain.
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Affiliation(s)
- Wen Qing Yu
- a College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China.,b Heilongjiang Academy of Land Reclamation, Haerbin, Heilongjiang Province, 150038, China.,c Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100094, China
| | - Gui Ping Zheng
- a College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China
| | - De Wen Qiu
- c Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100094, China
| | - Feng Chao Yan
- b Heilongjiang Academy of Land Reclamation, Haerbin, Heilongjiang Province, 150038, China
| | - Wen Zhi Liu
- b Heilongjiang Academy of Land Reclamation, Haerbin, Heilongjiang Province, 150038, China
| | - Wan Xue Liu
- c Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100094, China
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The features that distinguish lichenases from other polysaccharide-hydrolyzing enzymes and the relevance of lichenases for biotechnological applications. Appl Microbiol Biotechnol 2018; 102:3951-3965. [DOI: 10.1007/s00253-018-8904-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/23/2018] [Accepted: 02/26/2018] [Indexed: 01/16/2023]
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Cho HJ, Jang WJ, Moon SY, Lee JM, Kim JH, Han HS, Kim KW, Lee BJ, Kong IS. Immobilization of β-1,3-1,4-glucanase from Bacillus sp. on porous silica for production of β-glucooligosaccharides. Enzyme Microb Technol 2018; 110:30-37. [DOI: 10.1016/j.enzmictec.2017.12.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/26/2017] [Accepted: 12/18/2017] [Indexed: 10/18/2022]
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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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Zhang B, Liu Y, Yang H, Yan Q, Yang S, Jiang ZQ, Li S. Biochemical properties and application of a novel β-1,3-1,4-glucanase from Paenibacillus barengoltzii. Food Chem 2017; 234:68-75. [DOI: 10.1016/j.foodchem.2017.04.162] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/25/2017] [Accepted: 04/25/2017] [Indexed: 11/30/2022]
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Niu C, Zhu L, Xu X, Li Q. Rational design of thermostability in bacterial 1,3-1,4-β-glucanases through spatial compartmentalization of mutational hotspots. Appl Microbiol Biotechnol 2016; 101:1085-1097. [DOI: 10.1007/s00253-016-7826-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/15/2016] [Accepted: 08/22/2016] [Indexed: 11/28/2022]
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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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Feng X, Tang H, Han B, Lv B, Li C. Enhancing the Thermostability of β-Glucuronidase by Rationally Redesigning the Catalytic Domain Based on Sequence Alignment Strategy. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00535] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Xudong Feng
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Heng Tang
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Beijia Han
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Bo Lv
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Chun Li
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
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Niu C, Zhu L, Xu X, Li Q. Rational Design of Disulfide Bonds Increases Thermostability of a Mesophilic 1,3-1,4-β-Glucanase from Bacillus terquilensis. PLoS One 2016; 11:e0154036. [PMID: 27100881 PMCID: PMC4839689 DOI: 10.1371/journal.pone.0154036] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 04/07/2016] [Indexed: 11/19/2022] Open
Abstract
1,3-1,4-β-glucanase is an important biocatalyst in brewing industry and animal feed industry, while its low thermostability often reduces its application performance. In this study, the thermostability of a mesophilic β-glucanase from Bacillus terquilensis was enhanced by rational design and engineering of disulfide bonds in the protein structure. Protein spatial configuration was analyzed to pre-exclude the residues pairs which negatively conflicted with the protein structure and ensure the contact of catalytic center. The changes in protein overall and local flexibility among the wild-type enzyme and the designated mutants were predicted to select the potential disulfide bonds for enhancement of thermostability. Two residue pairs (N31C-T187C and P102C-N125C) were chosen as engineering targets and both of them were proved to significantly enhance the protein thermostability. After combinational mutagenesis, the double mutant N31C-T187C/P102C-N125C showed a 48.3% increase in half-life value at 60°C and a 4.1°C rise in melting temperature (Tm) compared to wild-type enzyme. The catalytic property of N31C-T187C/P102C-N125C mutant was similar to that of wild-type enzyme. Interestingly, the optimal pH of double mutant was shifted from pH6.5 to pH6.0, which could also increase its industrial application. By comparison with mutants with single-Cys substitutions, the introduction of disulfide bonds and the induced new hydrogen bonds were proved to result in both local and overall rigidification and should be responsible for the improved thermostability. Therefore, the introduction of disulfide bonds for thermostability improvement could be rationally and highly-effectively designed by combination with spatial configuration analysis and molecular dynamics simulation.
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Affiliation(s)
- Chengtuo Niu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of biotechnology, Jiangnan University, Wuxi, China
| | - Linjiang Zhu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of biotechnology, Jiangnan University, Wuxi, China
| | - Xin Xu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of biotechnology, Jiangnan University, Wuxi, China
| | - Qi Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of biotechnology, Jiangnan University, Wuxi, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- * E-mail:
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Niu C, Zhu L, Zhu P, Li Q. Lysine-Based Site-Directed Mutagenesis Increased Rigid β-Sheet Structure and Thermostability of Mesophilic 1,3-1,4-β-Glucanase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5249-5256. [PMID: 25953154 DOI: 10.1021/acs.jafc.5b00480] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
1,3-1,4-β-Glucanase is widely applied in the food industry, while its low thermostability often reduces its performance. In a previous study, chemical modification of surface lysine residues was proved to increase the thermostability of β-glucanase. To improve the thermostability, the mesophilic β-glucanase from Bacillus terquilensis was rationally engineered through site-directed mutagenesis of the 12 lysines into serines. The results showed that the K20S, K117S, and K165S mutants could both enhance the specific activities and thermostability of β-glucanase. The triple mutant (K20S/K117S/K165S) could increase the optimal temperature and T50 value by 15 and 14 °C, respectively. Five percent more structured residues were observed in the mutant, which formed new β-sheet structures in the concave side. Molecular dynamics simulation analysis showed that the flexibility in the mutation regions was decreased, which resulted in the overall rigidity of the β-glucanase. Therefore, the lysine-based site-directed mutagenesis is a simple and effective method for improving the thermostability of β-glucanase.
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Affiliation(s)
- Chengtuo Niu
- †Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, and ‡Synergetic Innovation Center of Food Safety and Nutrition, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Linjiang Zhu
- †Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, and ‡Synergetic Innovation Center of Food Safety and Nutrition, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Pei Zhu
- †Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, and ‡Synergetic Innovation Center of Food Safety and Nutrition, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Qi Li
- †Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, and ‡Synergetic Innovation Center of Food Safety and Nutrition, School of Biotechnology, Jiangnan University, Wuxi 214122, China
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