1
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Wang Y, Xie T, Ma C, Zhao Y, Li J, Li Z, Ye X. Biochemical characterization and antifungal activity of a recombinant β-1,3-glucanase FlGluA from Flavobacterium sp. NAU1659. Protein Expr Purif 2024; 224:106563. [PMID: 39122061 DOI: 10.1016/j.pep.2024.106563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 07/07/2024] [Accepted: 08/01/2024] [Indexed: 08/12/2024]
Abstract
β-1,3-glucanases can degrade β-1,3-glucoside bonds in β-glucan which is the main cell-wall component of most of fungi, and have the crucial application potential in plant protection and food processing. Herein, a β-1,3-glucanase FlGluA from Flavobacterium sp. NAU1659 composed of 333 amino acids with a predicted molecular mass of 36.6 kDa was expressed in Escherichia coli BL21, purified and characterized. The deduced amino acid sequence of FlGluA showed the high identity with the β-1,3-glucanase belonging to glycoside hydrolase (GH) family 16. Enzymological characterization indicated FlGluA had the highest activity on zymosan A, with a specific activity of 3.87 U/mg, followed by curdlan (1.16 U/mg) and pachymaran (0.88 U/mg). It exhibited optimal catalytic activity at the pH 5.0 and 40 °C, and was stable when placed at 4 °C for 12 h in the range of pH 3.0-8.0 or at a temperature below 50 °C for 3 h. Its catalytic activity was enhanced by approximately 36 % in the presence of 1 mM Cr3+. The detection of thin-layer chromatography and mass spectrometry showed FlGluA hydrolyzed zymosan A mainly to glucose and disaccharide, and trace amounts of tetrasaccharide and pentasaccharide, however, it had no action on laminaribiose, indicating its endo-β-1,3-glucanase activity. The mycelium growth of F. oxysporum treated by FlGluA was inhibited, with approximately 37 % of inhibition rate, revealing the potential antifungal activity of the enzyme. These results revealed the hydrolytic properties and biocontrol activity of FlGluA, laying a crucial foundation for its potential application in agriculture and industry.
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Affiliation(s)
- Yanxin Wang
- College of Life Sciences of Liaocheng University, 252000, Liaocheng, PR China; Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences of Nanjing Agricultural University, 210095, Nanjing, PR China.
| | - Tingting Xie
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences of Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Chenlong Ma
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences of Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Yujie Zhao
- College of Life Sciences of Liaocheng University, 252000, Liaocheng, PR China
| | - Jingchen Li
- College of Life Sciences of Liaocheng University, 252000, Liaocheng, PR China
| | - Zhendong Li
- College of Life Sciences of Liaocheng University, 252000, Liaocheng, PR China
| | - Xianfeng Ye
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences of Nanjing Agricultural University, 210095, Nanjing, PR China.
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2
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Jiang C, Miao G, Li J, Zhang Z, Li J, Zhu S, Zhang J, Zhou X. Identification and Characterization of Two Novel Extracellular β-Glucanases from Chaetomium globosum against Fusarium sporotrichioides. Appl Biochem Biotechnol 2024; 196:3199-3215. [PMID: 37642922 DOI: 10.1007/s12010-023-04698-1] [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] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
Chaetomium globosum can inhibit the growth of fusarium by means of their extracellular proteins. Two novel β-glucanases, designated Cgglu17A and Cgglu16B, were separated from the supernatant of C. globosum W7 and verified to have the ability to hydrolyze cell walls of Fusarium sporotrichioides MLS-19. Cgglu17A (397 amino acids) was classified as glycoside hydrolase family 17 while Cgglu16B belongs to the family16 (284 amino acids). Recombinant protein Cgglu17A was successfully expressed in Escherichia coli, and the enzymes were purified by affinity chromatography. Maximum activity of Cgglu17A appeared at the pH 5.5 and temperature 50 °C, but Cgglu16B shows the maximum activity at the pH 5.0 and temperature 50 °C. Most of heavy metal ions had inhibition effect on the two enzymes, but Cgglu17A and Cgglu16B were respectively activated by Ba2+ and Mn2+. Cgglu17A exhibited high substrate specificity, almost only catalyzing the cleavage of β-1,3-glycosidic bond, in various polysaccharose, to liberate glucose. However, Cgglu16B showed high catalytic activities to both β-1,3-glycosidic and β-1,3-1,4-glycosidic bonds. Cgglu17A was an exo-glucanase, but Cgglu16B was an endo-glucanase based on hydrolytic properties assay. Both of two enzymes showed potential antifungal activity, and the synergistic effect was observed in the germination experiment of pathogenic fungus. In conclusion, Cgglu17A (exo-1,3-β-glucanase) and Cgglu16B (endo-1,3(4)-β-glucanase) were confirmed to play a key role in the process of C. globosum controlling fusarium and have potential application value on industry and agriculture for the first time.
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Affiliation(s)
- Cheng Jiang
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China.
- Key Laboratory of Bioresource and Environmental Biotechnology of Anhui Higher Education Institutes, Huainan Normal University, Huainan, People's Republic of China.
- School of Biological Engineering & Institute of Digital Ecology and Health, Huainan Normal University, Huainan, People's Republic of China.
| | - Guopeng Miao
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
- Key Laboratory of Bioresource and Environmental Biotechnology of Anhui Higher Education Institutes, Huainan Normal University, Huainan, People's Republic of China
- School of Biological Engineering & Institute of Digital Ecology and Health, Huainan Normal University, Huainan, People's Republic of China
| | - Jialu Li
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
- Lanzhou Institute of Biological Products, Lanzhou, People's Republic of China
| | - Ziyu Zhang
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
| | - Jiamin Li
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
| | - Shuyan Zhu
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
| | - Jinhu Zhang
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
| | - Xingyu Zhou
- School of Biological Engineering, Huainan Normal University, Huainan, People's Republic of China
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Belair M, Restrepo-Leal JD, Praz C, Fontaine F, Rémond C, Fernandez O, Besaury L. Botryosphaeriaceae gene machinery: Correlation between diversity and virulence. Fungal Biol 2023; 127:1010-1031. [PMID: 37142361 DOI: 10.1016/j.funbio.2023.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 03/09/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023]
Abstract
The Botryosphaeriaceae family comprises numerous fungal pathogens capable of causing economically meaningful diseases in a wide range of crops. Many of its members can live as endophytes and turn into aggressive pathogens following the onset of environmental stress events. Their ability to cause disease may rely on the production of a broad set of effectors, such as cell wall-degrading enzymes, secondary metabolites, and peptidases. Here, we conducted comparative analyses of 41 genomes representing six Botryosphaeriaceae genera to provide insights into the genetic features linked to pathogenicity and virulence. We show that these Botryosphaeriaceae genomes possess a large diversity of carbohydrate-active enzymes (CAZymes; 128 families) and peptidases (45 families). Botryosphaeria, Neofusicoccum, and Lasiodiplodia presented the highest number of genes encoding CAZymes involved in the degradation of the plant cell wall components. The genus Botryosphaeria also exhibited the highest abundance of secreted CAZymes and peptidases. Generally, the secondary metabolites gene cluster profile was consistent in the Botryosphaeriaceae family, except for Diplodia and Neoscytalidium. At the strain level, Neofusicoccum parvum NpBt67 stood out among all the Botryosphaeriaceae genomes, presenting a higher number of secretome constituents. In contrast, the Diplodia strains showed the lowest richness of the pathogenicity- and virulence-related genes, which may correlate with their low virulence reported in previous studies. Overall, these results contribute to a better understanding of the mechanisms underlying pathogenicity and virulence in remarkable Botryosphaeriaceae species. Our results also support that Botryosphaeriaceae species could be used as an interesting biotechnological tool for lignocellulose fractionation and bioeconomy.
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Zha ZQ, You S, Hu YH, Zhang F, Chen YW, Wang J. Asn57 N-glycosylation promotes the degradation of hemicellulose by β-1,3-1,4-glucanase from Rhizopus homothallicus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:8707-8721. [PMID: 35366731 DOI: 10.1007/s11356-022-19959-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
N-glycosylation alters the properties of different enzymes in different ways. Rhizopus homothallicus was first described as an environmental isolate from desert soil in Guatemala. A new gene encoding glucanase RhGlu16B was identified in R. homothallicus. It had high specific activity (9673 U/mg) when barley glucan was used as a substrate, and β-glucan is hemicellulose that is abundant in nature. RhGlu16B has only one N-glycosylation site in its Ala55-Gly64 loop. It was found that N-glycosylation increased its Tm value and catalytic efficiency by 5.1 °C and 59%, respectively. Adding N-glycosylation to the same region of GH16 family glucanases TlGlu16A (from Talaromyces leycettanus) increased its thermostability and catalytic efficiency by 6.4 °C and 38%, respectively. In a verification experiment using GH16 family glucanases BisGlu16B (from Bisporus) in which N-glycosylation was removed, N-glycosylation also appeared to promote thermostability and catalytic efficiency. N-glycosylation reduced the overall root mean square deviation of the enzyme structure, creating rigidity and increasing overall thermostability. This study provided a reference for the molecular modification of GH16 family glucanases and guided the utilization of β-glucan in hemicellulose.
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Affiliation(s)
- Zi-Qian Zha
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212100, People's Republic of China
| | - Shuai You
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212100, People's Republic of China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, 212100, People's Republic of China
| | - Yang-Hao Hu
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212100, People's Republic of China
| | - Fang Zhang
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212100, People's Republic of China
| | - Yi-Wen Chen
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212100, People's Republic of China
| | - Jun Wang
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212100, People's Republic of China.
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, 212100, People's Republic of China.
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Characterization of a GH5 endoxylanase from Penicillium funiculosum and its synergism with GH16 endo-1,3(4)-glucanase in saccharification of sugarcane bagasse. Sci Rep 2022; 12:17219. [PMID: 36241677 PMCID: PMC9568505 DOI: 10.1038/s41598-022-21529-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 09/28/2022] [Indexed: 01/06/2023] Open
Abstract
The production of second-generation fuels from lignocellulosic residues such as sugarcane bagasse (SCB) requires the synergistic interaction of key cellulose-degrading enzymes and accessory proteins for their complete deconstruction to useful monomeric sugars. Here, we recombinantly expressed and characterized unknown GH5 xylanase from P. funiculosum (PfXyn5) in Pichia pastoris, which was earlier found in our study to be highly implicated in SCB saccharification. The PfXyn5 has a molecular mass of ~ 55 kDa and showed broad activity against a range of substrates like xylan, xyloglucan, laminarin and p-nitrophenyl-β-D-xylopyranoside, with the highest specific activity of 0.7 U/mg against xylan at pH 4.5 and 50 °C. Analysis of the degradation products of xylan and SCB by PfXyn5 showed significant production of xylooligosaccharides (XOS) with a degree of polymerization (DP) ranging from two (DP2) to six (DP6), thus, suggesting that the PfXyn5 is an endo-acting enzyme. The enzyme synergistically improved the saccharification of SCB when combined with the crude cellulase cocktail of P. funiculosum with a degree of synergism up to 1.32. The PfXyn5 was further expressed individually and simultaneously with a notable GH16 endoglucanase (PfEgl16) in a catabolite-derepressed strain of P. funiculosum, PfMig188, and the saccharification efficiency of the secretomes from the resulting transformants were investigated on SCB. The secretome of PfMig188 overexpressing Xyn5 or Egl16 increased the saccharification of SCB by 9% or 7%, respectively, over the secretome of PfMig188, while the secretome of dual transformant increased SCB saccharification by ~ 15% at the same minimal protein concentration.
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6
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Hu Q, Yin X, Li H, Wang X, Jiang Z, Li L, Ni H, Li Q, Zhu Y. Characterisation of a novel laminarinase from
Microbulbifer
sp. ALW1 and the antioxidant activity of its hydrolysates. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15041] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Qingsong Hu
- College of Food and Biological Engineering Jimei University No. 43 Yindou Road Xiamen361021China
| | - Xiaoqian Yin
- College of Food and Biological Engineering Jimei University No. 43 Yindou Road Xiamen361021China
| | - Hebin Li
- Xiamen Medical College Xiamen361008China
| | - Xinghua Wang
- College of Food and Biological Engineering Jimei University No. 43 Yindou Road Xiamen361021China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen361021China
- Research Center of Food Biotechnology of Xiamen City Xiamen361021China
| | - Zedong Jiang
- College of Food and Biological Engineering Jimei University No. 43 Yindou Road Xiamen361021China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen361021China
- Research Center of Food Biotechnology of Xiamen City Xiamen361021China
| | - Lijun Li
- College of Food and Biological Engineering Jimei University No. 43 Yindou Road Xiamen361021China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen361021China
- Research Center of Food Biotechnology of Xiamen City Xiamen361021China
| | - Hui Ni
- College of Food and Biological Engineering Jimei University No. 43 Yindou Road Xiamen361021China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen361021China
- Research Center of Food Biotechnology of Xiamen City Xiamen361021China
| | - Qingbiao Li
- College of Food and Biological Engineering Jimei University No. 43 Yindou Road Xiamen361021China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen361021China
- Research Center of Food Biotechnology of Xiamen City Xiamen361021China
| | - Yanbing Zhu
- College of Food and Biological Engineering Jimei University No. 43 Yindou Road Xiamen361021China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen361021China
- Research Center of Food Biotechnology of Xiamen City Xiamen361021China
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7
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Liu C, Yan S, Zhao J, Lin M, Duan B, Zhang Z, Yang Y, Liu Z, Yuan S. An Aspergillus nidulans endo-β-1,3-glucanase exhibited specific catalytic features and was used to prepare 3-O-β-cellobiosyl-d-glucose and 3-O-β-gentiobiosyl-d-glucose with high antioxidant activity from barley β-glucan and laminarin, respectively. Int J Biol Macromol 2021; 186:424-432. [PMID: 34246678 DOI: 10.1016/j.ijbiomac.2021.07.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/07/2021] [Accepted: 07/07/2021] [Indexed: 12/01/2022]
Abstract
An endo-β-1,3(4)-glucanase AnENG16A from Aspergillus nidulans shows distinctive catalytic features for hydrolysis of β-glucans. AnENG16A hydrolyzed Eisenia bicyclis laminarin to mainly generate 3-O-β-gentiobiosyl-d-glucose and hydrolyzed barley β-glucan to mainly produce 3-O-β-cellobiosyl-d-glucose. Using molecular exclusion chromatography, we isolated and purified 3-O-β-cellobiosyl-d-glucose and 3-O-β-gentiobiosyl-d-glucose, respectively, from AnENG16A-hydrolysate of barley β-glucan and E. bicyclis laminarin. Further study reveals that 3-O-β-cellobiosyl-d-glucose had 8.99-fold higher antioxidant activity than barley β-glucan and 3-O-β-gentiobiosyl-d-glucose exhibited 43.0% higher antioxidant activity than E. bicyclis laminarin. Notably, 3-O-β-cellobiosyl-d-glucose and 3-O-β-gentiobiosyl-d-glucose exhibited 148.9% and 116.0% higher antioxidant activity than laminaritriose, respectively, indicating that β-1,4-linkage or -1,6-linkage at non-reducing end of β-glucotrioses had enhancing effect on antioxidant activity compared to β-1,3-linkage. Furthermore, 3-O-β-cellobiosyl-d-glucose showed 237.9% higher antioxidant activity than cellotriose, and laminarin showed 5.06-fold higher antioxidant activity than barley β-glucan, indicating that β-1,4-linkage at reducing end of β-glucans or oligosaccharides resulted in decrease of antioxidant activity compared to β-1,3-linkage.
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Affiliation(s)
- Cuicui Liu
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Songling Yan
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Jing Zhao
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Miao Lin
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Baiyun Duan
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Zhenqing Zhang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, PR China
| | - Yao Yang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing, Jiangsu 210023, PR China.
| | - Zhonghua Liu
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China.
| | - Sheng Yuan
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China.
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8
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Méndez-Líter JA, de Eugenio LI, Nieto-Domínguez M, Prieto A, Martínez MJ. Hemicellulases from Penicillium and Talaromyces for lignocellulosic biomass valorization: A review. BIORESOURCE TECHNOLOGY 2021; 324:124623. [PMID: 33434871 DOI: 10.1016/j.biortech.2020.124623] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 05/26/2023]
Abstract
The term hemicellulose groups different polysaccharides with heterogeneous structures, mannans, xyloglucans, mixed-linkage β-glucans and xylans, which differ in their backbone and branches, and in the type and distribution of glycosidic linkages. The enzymatic degradation of these complex polymers requires the concerted action of multiple hemicellulases and auxiliary enzymes. Most commercial enzymes are produced by Trichoderma and Aspergillus species, but recent studies have disclosed Penicillium and Talaromyces as promising sources of hemicellulases. In this review, we summarize the current knowledge on the hemicellulolytic system of these genera, and the role of hemicellulases in the disruption and synthesis of glycosidic bonds. In both cases, the enzymes from Penicillium and Talaromyces represent an interesting alternative for valorization of lignocellulosic biomass in the current framework of circular economy.
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Affiliation(s)
- Juan A Méndez-Líter
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CIB-CSIC), c/ Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Laura I de Eugenio
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CIB-CSIC), c/ Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Manuel Nieto-Domínguez
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CIB-CSIC), c/ Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Alicia Prieto
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CIB-CSIC), c/ Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - María Jesús Martínez
- Biotechnology for Lignocellulosic Biomass Group, Centro de Investigaciones Biológicas Margarita Salas (CIB-CSIC), c/ Ramiro de Maeztu 9, 28040 Madrid, Spain.
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9
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Fed-Batch Cultivation and Adding Supplements to Increase Yield of β-1,3-1,4-Glucanase by Genetically Engineered Escherichia coli. Catalysts 2021. [DOI: 10.3390/catal11020269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The aim of this study was to analyze the major influence factors of culture medium on the expression level of β-1,3-1,4-glucanase, and to further develop an optimized process for the extracellular production of β-glucanase at a bioreactor scale (7 L) with a genetically engineered Escherichia coli (E. coli) JM109-pLF3. In this study, batch cultivation and fed-batch cultivation including the constant rate feeding strategy and the DO-stat (DO: Dissolved Oxygen) feeding strategy were conducted. At a 7 L bioreactor scale for batch cultivation, biomass reached 3.14 g/L and the maximum β-glucanase activity was 506.94 U/mL. Compared with batch cultivation, the addition of glycerol, complex nitrogen and complete medium during fed-batch cultivation increased the production of biomass and β-1,3-1,4-glucanase. The maximum biomass and β-glucanase activity, which were 7.67 g/L and 1680 U/mL, respectively, that is, 2.45 and 3.31 times higher than those obtained with batch cultivation, were obtained by feeding a complex nitrogen source at a constant rate of 1.11 mL/min. Therefore, these nutritional supplements and strategies can be used as a reference to enhance the production of other bioproducts from E. coli.
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10
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Duman-Özdamar ZE, Binay B. Production of Industrial Enzymes via Pichia pastoris as a Cell Factory in Bioreactor: Current Status and Future Aspects. Protein J 2021; 40:367-376. [DOI: 10.1007/s10930-021-09968-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2021] [Indexed: 02/06/2023]
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11
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Chen L, Yi Z, Fang Y, Jin Y, Xiao Y, Zhao D, Luo H, He H, Sun Q, Zhao H. Uncovering key residues responsible for the thermostability of a thermophilic 1,3(4)-β-d-glucanase from Nong flavor Daqu by rational design. Enzyme Microb Technol 2020; 142:109672. [PMID: 33220875 DOI: 10.1016/j.enzmictec.2020.109672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/20/2020] [Accepted: 09/16/2020] [Indexed: 11/17/2022]
Abstract
Fungal 1,3(4)-β-D-glucanases were usually applied in brewing and feedstuff industries, however, the thermostability limits the most their application. The characterized 1,3(4)-β-D-glucanase (NFEg16A) from Chinese Nong-flavor (NF) Daqu showed the highest thermostability among GH16 fungal 1,3(4)-β-D-glucanases, with half-lives of thermal inactivation (t1/2) of 44.9 min at 90 °C, so multiple rational designs were used to identify the key residues for its thermostability. Based on protein sequence and 3D structure analyses around the catalytic regions. Nine site-mutants were constructed, among which N173Y and S187A were identified as the most thermotolerant and thermolabile ones, with t1/2 values of 61 min and 14.0 min at 90 °C, respectively. Therefore, N173 and S187 were then selected as "hotspots" for site-saturation mutagenesis. Interestingly, most of the N173 and S187 variants exhibited a similar thermostability to that of N173Y and S187A, respectively, confirming their different roles in the thermostability of NFEg16A. In addition, each S187A and its surrounding substitutions (D144 N and T164 N) was independently detrimental to the thermostability of NFEg16A, since the t1/2 (90 °C) of S187A, D144 N and T164 N were 14.0 min, 20.6 min and 27.2 min, respectively. Surprisingly, combinatorial substitution of S187A with D144 N or T164 N showed positive effects on the thermostability, with the increase of t1/2 (90 °C) to 30.9 min and 63.5 min for S187A-D144 N and S187A-T164 N, respectively. More importantly, S187A-T164 N showed higher thermostability than that of wild type. In short, we successfully identified two key sites and their surrounding residues in response to the thermostability of NFEg16A and further improved its thermostability by several rational designs. These findings could be used for the protein engineering of homologous 1,3(4)-β-D-glucanases, as well as other enzyme family members with high similarities.
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Affiliation(s)
- Lanchai Chen
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, PR China; Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Zhuolin Yi
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Yang Fang
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Yanling Jin
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Yao Xiao
- Analytical and Testing Center, Sichuan University of Science and Engineering, Zigong 643000, PR China
| | - Dong Zhao
- Wuliangye Group, Yibin 644007, PR China
| | - Huibo Luo
- Liquor Making Bio-Technology & Application of Key Laboratory of Sichuan Province, Bioengineering College, Sichuan University of Science & Engineering, Zigong 64300, PR China
| | - Hui He
- Department of Liquor Making Engineering, Moutai College, Renhuai 564501, PR China
| | - Qun Sun
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, PR China.
| | - Hai Zhao
- Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China.
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Liu X, Jiang Z, Ma S, Yan Q, Chen Z, Liu H. High-level production and characterization of a novel β-1,3-1,4-glucanase from Aspergillus awamori and its potential application in the brewing industry. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.01.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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13
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Karbalaei M, Rezaee SA, Farsiani H. Pichia pastoris: A highly successful expression system for optimal synthesis of heterologous proteins. J Cell Physiol 2020; 235:5867-5881. [PMID: 32057111 PMCID: PMC7228273 DOI: 10.1002/jcp.29583] [Citation(s) in RCA: 273] [Impact Index Per Article: 68.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 01/09/2020] [Indexed: 01/09/2023]
Abstract
One of the most important branches of genetic engineering is the expression of recombinant proteins using biological expression systems. Nowadays, different expression systems are used for the production of recombinant proteins including bacteria, yeasts, molds, mammals, plants, and insects. Yeast expression systems such as Saccharomyces cerevisiae (S. cerevisiae) and Pichia pastoris (P. pastoris) are more popular. P. pastoris expression system is one of the most popular and standard tools for the production of recombinant protein in molecular biology. Overall, the benefits of protein production by P. pastoris system include appropriate folding (in the endoplasmic reticulum) and secretion (by Kex2 as signal peptidase) of recombinant proteins to the external environment of the cell. Moreover, in the P. pastoris expression system due to its limited production of endogenous secretory proteins, the purification of recombinant protein is easy. It is also considered a unique host for the expression of subunit vaccines which could significantly affect the growing market of medical biotechnology. Although P. pastoris expression systems are impressive and easy to use with well‐defined process protocols, some degree of process optimization is required to achieve maximum production of the target proteins. Methanol and sorbitol concentration, Mut forms, temperature and incubation time have to be adjusted to obtain optimal conditions, which might vary among different strains and externally expressed protein. Eventually, optimal conditions for the production of a recombinant protein in P. pastoris expression system differ according to the target protein.
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Affiliation(s)
- Mohsen Karbalaei
- Department of Microbiology and Virology, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran
| | - Seyed A Rezaee
- School of Medicine, Mashhad University of Medical Sciences, Inflammation and Inflammatory Diseases Research Centre, Mashhad, Iran
| | - Hadi Farsiani
- Mashhad University of Medical Sciences, Antimicrobial Resistance Research Center, Mashhad, Iran
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14
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Borshchevskaya LN, Gordeeva TL, Kalinina AN, Fedorov AS, Sineoky SP. Comparison of β-Glucanases from Bacillus pumilus, Paenibacillus polymyxa, Bacillus subtilis, and Bacillus amyloliquefaciens in the Expression System of Pichia pastoris: Biochemical Characteristics and Potential in Fodder Production. APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819080040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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HPAEC-PAD and Q-TOF-MS/MS analysis reveal a novel mode of action of endo-β-1,3(4)-d-glucanase Eng16A from coprinopsis cinerea on barley β-glucan. Food Chem 2019; 287:160-166. [DOI: 10.1016/j.foodchem.2019.02.086] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 01/22/2019] [Accepted: 02/18/2019] [Indexed: 11/19/2022]
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16
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Ali B, Yi Z, Fang Y, Chen L, He K, Liu D, Luo H, Zhao D, Zheng J, He H, Jin Y, Zhao H. Characterization of a fungal thermostable endoglucanase from Chinese Nong-flavor daqu by metatranscriptomic method. Int J Biol Macromol 2019; 121:183-190. [DOI: 10.1016/j.ijbiomac.2018.09.173] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/12/2018] [Accepted: 09/25/2018] [Indexed: 02/01/2023]
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17
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You S, Tu T, Ma R, Huang HQ, Wang Y, Bai YG, Su XY, Cai HY, Yao B, Luo HY. Functional Analysis of a Highly Active β-Glucanase from Bispora sp. MEY-1 Using Its C-terminally Truncated Mutant. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:9728-9737. [PMID: 30043608 DOI: 10.1021/acs.jafc.8b01928] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A β-1,3-1,4-glucanase-encoding gene, Bisglu16B, was identified in Bispora sp. MEY-1. The deduced BisGlu16B consists of an N-terminal signal peptide, a catalytic module of glycoside hydrolase family 16 (GH16), and a C-terminal serine/proline-rich module. After expression in Pichia pastoris GS115, the purified recombinant BisGlu16B showed maximal activity at pH 4.0 and 55 °C and had broad substrate specificity (β-1,3-/β-1,4-mixed, β-1,3-, β-1,4-, and β-1,6-linked glucan, and β-1,4-mannan). The enzyme possessed high specific activities toward barley β-glucan (34 700 U·mg-1), lichenan (23 900 U·mg-1), and laminarin (9 000 U·mg-1). After removing the C-terminal module, the truncated mutant, BisGlu16B-ΔC, retained similar enzymatic properties to the wild type but displayed significantly enhanced activities (up to 2.5-fold). Functional and structural analyses indicated that the C-terminal module plays a key role in the substrate binding of BisGlu16B. This study provided an excellent candidate glucanase for industrial purposes and revealed the functions of a C-terminal serine/proline-rich region.
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Affiliation(s)
- Shuai You
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Tao Tu
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Rui Ma
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Huo-Qing Huang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Yuan Wang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Ying-Guo Bai
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Xiao-Yun Su
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Hui-Yi Cai
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Bin Yao
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Hui-Ying Luo
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
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18
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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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19
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Li J, Xu X, Shi P, Liu B, Zhang Y, Zhang W. Overexpression and characterization of a novel endo-β-1,3(4)-glucanase from thermophilic fungus Humicola insolens Y1. Protein Expr Purif 2017; 138:63-68. [DOI: 10.1016/j.pep.2015.11.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 11/10/2015] [Accepted: 11/15/2015] [Indexed: 11/27/2022]
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20
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Gene cloning, heterologous expression and characterization of a Coprinopsis cinerea endo-β-1,3(4)-glucanase. Fungal Biol 2017; 121:61-68. [DOI: 10.1016/j.funbio.2016.09.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 09/05/2016] [Accepted: 09/06/2016] [Indexed: 11/18/2022]
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21
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Mustafa G, Kousar S, Rajoka MI, Jamil A. Molecular cloning and comparative sequence analysis of fungal β-Xylosidases. AMB Express 2016; 6:30. [PMID: 27080227 PMCID: PMC5471287 DOI: 10.1186/s13568-016-0202-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 04/06/2016] [Indexed: 01/21/2023] Open
Abstract
Commercial scale degradation of hemicelluloses into easily accessible sugar residues is practically crucial in industrial as well as biochemical processes. Xylanolytic enzymes have a great number of possible applications in many biotechnological processes and therefore, these enzymes are continuously attracting the attention of scientists. Due to this fact, different β-Xylosidases have been isolated, purified and characterized from several bacteria and fungi. Microorganisms in this respect have gained much momentum for production of these significant biocatalysts with remarkable features. It is difficult to propagate microorganisms for efficient and cost-competitive production of β-Xylosidase from hemicelluloses due to expensive conditions of fermentation. The screening of new organisms with an enhanced production of β-Xylosidases has been made possible with the help of recombinant DNA technology. β-Xylosidase genes haven been cloned and expressed on large scale in both homologous and heterologous hosts with the advent of genetic engineering. Therefore, we have reviewed the literature regarding cloning of β-Xylosidase genes into various hosts for their heterologous production along with sequence similarities among different β-Xylosidases. The study provides insight into the current status of cloning, expression and sequence analysis of β-Xylosidases for industrial applications.
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You S, Tu T, Zhang L, Wang Y, Huang H, Ma R, Shi P, Bai Y, Su X, Lin Z, Luo H, Yao B. Improvement of the thermostability and catalytic efficiency of a highly active β-glucanase from Talaromyces leycettanus JCM12802 by optimizing residual charge-charge interactions. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:124. [PMID: 27303445 PMCID: PMC4906821 DOI: 10.1186/s13068-016-0544-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 06/02/2016] [Indexed: 05/31/2023]
Abstract
BACKGROUND β-Glucanase is one of the most extensively used biocatalysts in biofuel, food and animal feed industries. However, the poor thermostability and low catalytic efficiency of most reported β-glucanases limit their applications. Currently, two strategies are used to overcome these bottlenecks, i.e., mining for novel enzymes from extremophiles and engineering existing enzymes. RESULTS A novel endo-β-1,3-1,4-glucanase of GH16 (Tlglu16A) from the thermophilic fungus Talaromyces leycettanus JCM12802 was produced in Pichia pastoris and characterized. For potential industrial applications, recombinant TlGlu16A exhibits favorable enzymatic properties over most reported glucanases, i.e., remarkable stability over a wide pH range from 1.0 to 10.0 and superior activity on glucan substrates (up to 15,197 U/mg). The only weakness of TlGlu16A is the thermolability at 65 °C and higher. To improve the thermostability, the enzyme thermal stability system was then used to engineer TlGlu16A through optimization of residual charge-charge interactions. Eleven mutants were constructed and compared to the wild-type TlGlu16A. Four mutants, H58D, E134R, D235G and D296K, showed longer half-life time at 80 °C (31, 7, 25, 22 vs. 0.5 min), and two mutants, D235G and D296K, had greater specific activities (158.2 and 122.2 %, respectively) and catalytic efficiencies (k cat/K m, 170 and 114 %, respectively). CONCLUSIONS The engineered TlGlu16A has great application potentials from the perspectives of enzyme yield and properties. Its thermostability and activity were apparently improved in the engineered enzymes through charge optimization. This study spans the genetic, functional and structural fields, and provides a combination of gene mining and protein engineering approaches for the systematic improvement of enzyme performance.
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Affiliation(s)
- Shuai You
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Tao Tu
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Lujia Zhang
- />State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237 People’s Republic of China
| | - Yuan Wang
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Huoqing Huang
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Rui Ma
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Pengjun Shi
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Yingguo Bai
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Xiaoyun Su
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Zhemin Lin
- />Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100 People’s Republic of China
| | - Huiying Luo
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
| | - Bin Yao
- />Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, No. 12 Zhongguancun South Street, Beijing, 100081 People’s Republic of China
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Spohner SC, Müller H, Quitmann H, Czermak P. Expression of enzymes for the usage in food and feed industry with Pichia pastoris. J Biotechnol 2015; 202:118-34. [DOI: 10.1016/j.jbiotec.2015.01.027] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 12/28/2014] [Accepted: 01/07/2015] [Indexed: 12/29/2022]
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24
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Xia W, Shi P, Xu X, Qian L, Cui Y, Xia M, Yao B. High level expression of a novel family 3 neutral β-xylosidase from Humicola insolens Y1 with high tolerance to D-xylose. PLoS One 2015; 10:e0117578. [PMID: 25658646 PMCID: PMC4320052 DOI: 10.1371/journal.pone.0117578] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 12/28/2014] [Indexed: 11/18/2022] Open
Abstract
A novel β-xylosidase gene of glycosyl hydrolase (GH) family 3, xyl3A, was identified from the thermophilic fungus Humicola insolens Y1, which is an innocuous and non-toxic fungus that produces a wide variety of GHs. The cDNA of xyl3A, 2334 bp in length, encodes a 777-residue polypeptide containing a putative signal peptide of 19 residues. The gene fragment without the signal peptide-coding sequence was cloned and overexpressed in Pichia pastoris GS115 at a high level of 100 mg/L in 1-L Erlenmeyer flasks without fermentation optimization. Recombinant Xyl3A showed both β-xylosidase and α-arabinfuranosidase activities, but had no hydrolysis capacity towards polysaccharides. It was optimally active at pH 6.0 and 60°C with a specific activity of 11.6 U/mg. It exhibited good stability over pH 4.0-9.0 (incubated at 37°C for 1 h) and at temperatures of 60°C and below, retaining over 80% maximum activity. The enzyme had stronger tolerance to xylose than most fungal GH3 β-xylosidases with a high Ki value of 29 mM, which makes Xyl3A more efficient to produce xylose in fermentation process. Sequential combination of Xyl3A following endoxylanase Xyn11A of the same microbial source showed significant synergistic effects on the degradation of various xylans and deconstructed xylo-oligosaccharides to xylose with high efficiency. Moreover, using pNPX as both the donor and acceptor, Xyl3A exhibited a transxylosylation activity to synthesize pNPX2. All these favorable properties suggest that Xyl3A has good potential applications in the bioconversion of hemicelluloses to biofuels.
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Affiliation(s)
- Wei Xia
- College of Animal Science, Zhejiang University, Hangzhou 310058, P. R. China
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China
| | - Pengjun Shi
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China
| | - Xinxin Xu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China
| | - Lichun Qian
- College of Animal Science, Zhejiang University, Hangzhou 310058, P. R. China
- * E-mail: (BY); (LQ)
| | - Ying Cui
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China
| | - Mengjuan Xia
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China
| | - Bin Yao
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China
- * E-mail: (BY); (LQ)
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Wang K, Luo H, Shi P, Huang H, Bai Y, Yao B. A highly-active endo-1,3-1,4-β-glucanase from thermophilic Talaromyces emersonii CBS394.64 with application potential in the brewing and feed industries. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.06.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Characterization of a broad-specificity β-glucanase acting on β-(1,3)-, β-(1,4)-, and β-(1,6)-glucans that defines a new glycoside hydrolase family. Appl Environ Microbiol 2012; 78:8540-6. [PMID: 23023747 DOI: 10.1128/aem.02572-12] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Here we report the cloning of the Pa_3_10940 gene from the coprophilic fungus Podospora anserina, which encodes a C-terminal family 1 carbohydrate binding module (CBM1) linked to a domain of unknown function. The function of the gene was investigated by expression of the full-length protein and a truncated derivative without the CBM1 domain in the yeast Pichia pastoris. Using a library of polysaccharides of different origins, we demonstrated that the full-length enzyme displays activity toward a broad range of β-glucan polysaccharides, including laminarin, curdlan, pachyman, lichenan, pustulan, and cellulosic derivatives. Analysis of the products released from polysaccharides revealed that this β-glucanase is an exo-acting enzyme on β-(1,3)- and β-(1,6)-linked glucan substrates and an endo-acting enzyme on β-(1,4)-linked glucan substrates. Hydrolysis of short β-(1,3), β-(1,4), and β-(1,3)/β-(1,4) gluco-oligosaccharides confirmed this striking feature and revealed that the enzyme performs in an exo-type mode on the nonreducing end of gluco-oligosaccharides. Excision of the CBM1 domain resulted in an inactive enzyme on all substrates tested. To our knowledge, this is the first report of an enzyme that displays bifunctional exo-β-(1,3)/(1,6) and endo-β-(1,4) activities toward beta-glucans and therefore cannot readily be assigned to existing Enzyme Commission groups. The amino acid sequence has high sequence identity to hypothetical proteins within the fungal taxa and thus defines a new family of glycoside hydrolases, the GH131 family.
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