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Hu G, Hong X, Zhu M, Lei L, Han Z, Meng Y, Yang J. Improving the Quality of Wheat Flour Bread by a Thermophilic Xylanase with Ultra Activity and Stability Reconstructed by Ancestral Sequence and Computational-Aided Analysis. Molecules 2024; 29:1895. [PMID: 38675714 PMCID: PMC11054572 DOI: 10.3390/molecules29081895] [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: 03/20/2024] [Revised: 04/11/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Xylanase is an essential component used to hydrolyze the xylan in wheat flour to enhance the quality of bread. Presently, cold-activated xylanase is popularly utilized to aid in the development of dough. In this study, ancestral sequence reconstruction and molecular docking of xylanase and wheat xylan were used to enhance the activity and stability of a thermophilic xylanase. The results indicated that the ancestral enzyme TmxN3 exhibited significantly improved activity and thermal stability. The Vmax increased by 2.7 times, and the catalytic efficiency (Kcat/Km) increased by 1.7 times in comparison to TmxB. After being incubated at 100 °C for 120 min, it still retained 87.3% of its activity, and the half-life in 100 °C was 330 min, while the wild type xylanase was only 55 min. This resulted in an improved shelf life of bread, while adding TmxN3 considerably enhanced its quality with excellent volume and reduced hardness, chewiness, and gumminess. The results showed that the hardness was reduced by 55.2%, the chewiness was reduced by 40.11%, and the gumminess was reduced by 53.52%. To facilitate its industrial application, we further optimized the production conditions in a 5L bioreactor, and the xylanase activity reached 1.52 × 106 U/mL culture.
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Affiliation(s)
- Guoshuai Hu
- Pilot Base of Food Microbial Resources Utilization of Hubei Province, College of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China; (G.H.); (M.Z.)
| | - Xizhi Hong
- Pilot Base of Food Microbial Resources Utilization of Hubei Province, College of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China; (G.H.); (M.Z.)
| | - Meixin Zhu
- Pilot Base of Food Microbial Resources Utilization of Hubei Province, College of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China; (G.H.); (M.Z.)
| | - Lei Lei
- Pilot Base of Food Microbial Resources Utilization of Hubei Province, College of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China; (G.H.); (M.Z.)
| | - Zhenggang Han
- Pilot Base of Food Microbial Resources Utilization of Hubei Province, College of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China; (G.H.); (M.Z.)
| | - Yong Meng
- Mianyang Habio Bioengineering Co., Ltd., Mianyang 621000, China;
| | - Jiangke Yang
- Pilot Base of Food Microbial Resources Utilization of Hubei Province, College of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China; (G.H.); (M.Z.)
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2
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Melo VSD, Gomes BM, Chambergo FS. Biochemical characterization of a xylose-tolerant GH43 β-xylosidase from Geobacillus thermodenitrificans. Carbohydr Res 2023; 532:108901. [PMID: 37487384 DOI: 10.1016/j.carres.2023.108901] [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: 05/14/2023] [Revised: 07/12/2023] [Accepted: 07/15/2023] [Indexed: 07/26/2023]
Abstract
Hemicelluloses are the second most abundant polysaccharide in plant biomass, in which xylan is the main constituent. Aiming at the total degradation of xylan and the obtention of fermentable sugars, several enzymes acting synergistically are required, especially β-xylosidases. In this study, β-xylosidase from Geobacillus thermodenitrificans (GtXyl) was expressed in E. coli BL21 and characterized. The enzyme GtXyl has been grouped within the family of glycoside hydrolases 43 (GH43). Results showed that GtXyl obtained the highest activity at pH 5.0 and temperature of 60 °C. In the additive's tests, the enzyme remained stable in the presence of metal ions and EDTA, and showed high tolerance to xylose, with a relative activity of 55.4% at 400 mM. The enzyme also presented bifunctional activity of β-xylosidase and α-l-arabinofuranosidase, with the highest activity on the substrate p-nitrophenyl-β-d-xylopyranoside. The specific activity on p-nitrophenyl-β-d-xylopyranoside was 18.33 U mg-1 and catalytic efficiency of 20.21 mM-1 s-1, which is comparable to other β-xylosidases reported in the literature. Putting together, the GtXyl enzyme presented interesting biochemical characteristics that are desirable for the application in the enzymatic hydrolysis of plant biomass, such as activity at higher temperatures, high thermostability and stability to metal ions.
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Affiliation(s)
- Vandierly Sampaio de Melo
- Laboratory of Biochemistry and Protein Biotechnology, School of Arts, Sciences and Humanities, University of São Paulo, Av. Arlindo Bettio, 1000, São Paulo, CEP: 03828000, Brazil
| | - Brisa Moreira Gomes
- Laboratory of Biochemistry and Protein Biotechnology, School of Arts, Sciences and Humanities, University of São Paulo, Av. Arlindo Bettio, 1000, São Paulo, CEP: 03828000, Brazil
| | - Felipe Santiago Chambergo
- Laboratory of Biochemistry and Protein Biotechnology, School of Arts, Sciences and Humanities, University of São Paulo, Av. Arlindo Bettio, 1000, São Paulo, CEP: 03828000, Brazil.
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3
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Mombeni M, Arjmand S, Siadat SOR, Alizadeh H, Abbasi A. pMOX: a new powerful promoter for recombinant protein production in yeast Pichia pastoris. Enzyme Microb Technol 2020; 139:109582. [DOI: 10.1016/j.enzmictec.2020.109582] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 04/17/2020] [Accepted: 04/18/2020] [Indexed: 11/27/2022]
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4
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Tomazini A, Higasi P, Manzine LR, Stott M, Sparling R, Levin DB, Polikarpov I. A novel thermostable GH5 β-xylosidase from Thermogemmatispora sp. T81. N Biotechnol 2019; 53:57-64. [DOI: 10.1016/j.nbt.2019.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 06/09/2019] [Accepted: 07/06/2019] [Indexed: 10/26/2022]
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5
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Cintra LC, da Costa IC, de Oliveira ICM, Fernandes AG, Faria SP, Jesuíno RSA, Ravanal MC, Eyzaguirre J, Ramos LP, de Faria FP, Ulhoa CJ. The boosting effect of recombinant hemicellulases on the enzymatic hydrolysis of steam-treated sugarcane bagasse. Enzyme Microb Technol 2019; 133:109447. [PMID: 31874680 DOI: 10.1016/j.enzmictec.2019.109447] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/17/2019] [Accepted: 10/10/2019] [Indexed: 10/25/2022]
Abstract
To increase the efficiency of enzyme cocktails in deconstructing cellulose and hemicelluloses present in the plant cell wall, a combination of enzymes with complementary activities is required. Xylan is the main hemicellulose component of energy crops and for its complete hydrolysis a system consisting of several enzymes acting cooperatively, including endoxylanases (XYN), β-xylosidases (XYL) and α-l-arabinofuranosidases (ABF) is necessary. The current work aimed at evaluating the effect of recombinant hemicellulolytic enzymes on the enzymatic hydrolysis of steam-exploded sugarcane bagasse (SEB). One recombinant endoxylanase (HXYN2) and one recombinant β-xylosidase (HXYLA) from Humicola grisea var thermoidea, together with an α-l-arabinofuranosidase (AFB3) from Penicillium pupurogenum, all produced in Pichia pastoris, were used to formulate an efficient enzyme mixture for SEB hydrolysis using a 23 Central Composite Rotatable Design (CCRD). The most potent enzyme for SEB hydrolysis was ABF3. Subsequently, the optimal enzyme mixture was used in combination with commercial cellulases (Accellerase 1500), either simultaneously or in sequential experiments. The supplementation of Accellerase 1500 with hemicellulases enhanced the glucose yield from SEB hydrolysis by 14.6%, but this effect could be raised to 50% when hemicellulases were added prior to hydrolysis with commercial cellulases. These results were supported by scanning electron microscopy, which revealed the effect of enzymatic hydrolysis on SEB fibers. Our results show the potential of complementary enzyme activities to improve enzymatic hydrolysis of SEB, thus improving the efficiency of the hydrolytic process.
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Affiliation(s)
- Lorena Cardoso Cintra
- Department of Cellular Biology, University of Brasília, Brasília, Brazil; School of Veterinary and Animal Sciences, Federal University of Goiás, Goiânia, GO, Brazil
| | | | - Izadora Cristina Moreira de Oliveira
- Department of Cellular Biology, University of Brasília, Brasília, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Goiás, Goiânia, GO, Brazil
| | - Amanda Gregorim Fernandes
- Department of Cellular Biology, University of Brasília, Brasília, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Goiás, Goiânia, GO, Brazil
| | - Syd Pereira Faria
- Department of Biochemistry and Molecular Biology, Federal University of Goiás, Goiânia, GO, Brazil
| | | | - Maria Cristina Ravanal
- Department of Biological Sciences, Andrés Bello University, Santiago, Chile; Instituto de Ciencia y Tecnología de los Alimentos (ICYTAL), Facultad de Ciencias Agrarias, Universidad Austral de Chile, Valdivia, Chile
| | - Jaime Eyzaguirre
- Department of Biological Sciences, Andrés Bello University, Santiago, Chile
| | - Luiz Pereira Ramos
- Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil
| | - Fabrícia Paula de Faria
- Department of Biochemistry and Molecular Biology, Federal University of Goiás, Goiânia, GO, Brazil
| | - Cirano José Ulhoa
- Department of Cellular Biology, University of Brasília, Brasília, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Goiás, Goiânia, GO, Brazil.
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Improving the thermostability and catalytic efficiency of glucose oxidase from Aspergillus niger by molecular evolution. Food Chem 2019; 281:163-170. [DOI: 10.1016/j.foodchem.2018.12.099] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 01/29/2023]
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7
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Zheng F, Liu J, Basit A, Miao T, Jiang W. Insight to Improve α-L-Arabinofuranosidase Productivity in Pichia pastoris and Its Application on Corn Stover Degradation. Front Microbiol 2018; 9:3016. [PMID: 30631307 PMCID: PMC6315152 DOI: 10.3389/fmicb.2018.03016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 11/22/2018] [Indexed: 12/20/2022] Open
Abstract
α-L-arabinofuranosidase (ARA) with enhanced specific activity and in large amounts, is needed for a variety of industrial applications. To improve ARA production with engineered methylotrophic yeast Pichia pastoris, a genetically modified ara gene from Aspergillus niger ND-1 was investigated. Through codon optimization and rational replacement of α-factor signal peptide with the native propeptide (MFSRRNLVALGLAATVSA), ARA production was improved from 2.61 ± 0.13 U/mL to 14.37 ± 0.22 U/mL in shaking flask culture (a 5.5-fold increase). Results of N-terminal sequencing showed that secreted active ARA of recombinant strain p-oARA had theoretical initial five amino acids (GPCDI) comparable to the mature sequences of α-oARA (EAEAG) and αp-oARA (NLVAL). The kinetic values have been determined for ARA of recombinant strain p-oARA (Vmax = 747.55 μmol/min/mg, Km = 5.36 mmol/L), optimal activity temperature 60°C and optimal pH 4.0. Scaling up of ARA production by p-oARA in a 7.5-L fermentor resulted in remarkably high extracellular ARA specific activity (479.50 ± 12.83 U/mg) at 168 h, and maximal production rate 164.47 ± 4.40 U/mL. In studies of corn stover degradation activity, degree of synergism for ARA and xylanase was 32.4% and enzymatic hydrolysis yield for ARA + xylanase addition was 15.9% higher than that of commercial cellulase, indicating significant potential of ARA for catalytic conversion of corn stover to fermentable sugars for biofuel production.
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Affiliation(s)
- Fengzhen Zheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Junquan Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Abdul Basit
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Ting Miao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Wei Jiang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, State Key Laboratory of Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
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8
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Zhuo R, Yu H, Qin X, Ni H, Jiang Z, Ma F, Zhang X. Heterologous expression and characterization of a xylanase and xylosidase from white rot fungi and their application in synergistic hydrolysis of lignocellulose. CHEMOSPHERE 2018; 212:24-33. [PMID: 30138852 DOI: 10.1016/j.chemosphere.2018.08.062] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 08/04/2018] [Accepted: 08/13/2018] [Indexed: 05/10/2023]
Abstract
Endo-xylanase and β-xylosidase are the major enzymes for hemicellulose hydrolysis, which play a significant role in biomass conversion. In our previous work, the white-rot fungi Pleurotus ostreatus HAUCC 162 and Irpex lacteus CD2 were demonstrated to have strong ability in lignocellulose degradation, and the related lignin degradation enzymes were characterized. However, little was known about their hemicellulases. In this work, a novel endo-1, 4-xylanase and a β-xylosidase from Pleurotus ostreatus HAUCC 162 and Irpex lacteus CD2 were heterologously expressed and characterized. The optima of pH and temperature were 5.0 and 55 °C for rXyn162, and 6.5 and 30 °C for rXylCD2. rXyn162 showed high tolerance to metal ions such as Ca2+, Cr3+, Zn2+, Na+, and Al3+. The recombinant rXyn162 and rXylCD2 exhibited synergistic hydrolysis of oat spelts xylan and sodium hydroxide pretreated cornstalk (SHPC), where the degree of synergy (DS) was 2.26 for SHPC hydrolysis. MALDI-TOF-MS and HPLC analysis showed that xylooligosaccharides (XOS) with small degrees of polymerization (DP2-DP4) were the major XOS hydrolyzate during SHPC degradation by rXyn162 and rXylCD2. In addition, rXyn162 and rXylCD2 could efficiently improve the hydrolysis of SHPC by commercial cellulase. The present study suggested the potential application of rXyn162 and rXylCD2 in the field of biomass pretreatment and biofuel production.
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Affiliation(s)
- Rui Zhuo
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China; College of Biology, Hunan University, Changsha 410082, PR China
| | - Hongbo Yu
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Xing Qin
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Haoxiang Ni
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Zhen Jiang
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Fuying Ma
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China.
| | - Xiaoyu Zhang
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China.
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9
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Boyce A, Walsh G. Purification and Characterisation of a Thermostable β-Xylosidase from Aspergillus niger van Tieghem of Potential Application in Lignocellulosic Bioethanol Production. Appl Biochem Biotechnol 2018; 186:712-730. [DOI: 10.1007/s12010-018-2761-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/11/2018] [Indexed: 12/30/2022]
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10
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Xu T, Huang X, Li Z, Ki Lin CS, Li S. Enhanced Purification Efficiency and Thermal Tolerance of Thermoanaerobacterium aotearoense β-Xylosidase through Aggregation Triggered by Short Peptides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:4182-4188. [PMID: 29633613 DOI: 10.1021/acs.jafc.8b00551] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
To simplify purification and improve heat tolerance of a thermostable β-xylosidase (ThXylC), a short ELK16 peptide was attached to its C-terminus, which is designated as ThXylC-ELK. Wild-type ThXylC was normally expressed in soluble form. However, ThXylC-ELK assembled into aggregates with 98.6% of total β-xylosidase activity. After simple centrifugation and buffer washing, the ThXylC-ELK particles were collected with 92.57% activity recovery and 95% purity, respectively. Meanwhile, the wild-type ThXylC recovery yield was less than 55% after heat inactivation, affinity and desalting chromatography followed by HRV 3C protease cleavage purification. Catalytic efficiency ( Kcat/ Km) was increased from 21.31 mM-1 s-1 for ThXylC to 32.19 mM-1 s-1 for ThXylC-ELK accompanied by a small increase in Km value. Heat tolerance of ThXylC-ELK at high temperatures was also increased. The ELK16 peptide attachment resulted in 6.2-fold increase of half-life at 65 °C. Released reducing sugars were raised 1.3-fold during sugar cane bagasse hydrolysis when ThXylC-ELK was supplemented into the combination of XynAΔSLH and Cellic CTec2.
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Affiliation(s)
- Tianwang Xu
- Provincial Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering , South China University of Technology , Guangzhou 510006 , China
| | - Xiongliang Huang
- Provincial Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering , South China University of Technology , Guangzhou 510006 , China
| | - Zhe Li
- Provincial Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering , South China University of Technology , Guangzhou 510006 , China
| | - Carol Sze Ki Lin
- School of Energy and Environment , City University of Hong Kong , Tat Chee Avenue , Kowloon , Hong Kong
| | - Shuang Li
- Provincial Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering , South China University of Technology , Guangzhou 510006 , China
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11
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Li T, Wu YR, He J. Heterologous expression, characterization and application of a new β-xylosidase identified in solventogenic Clostridium sp. strain BOH3. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.02.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Production and Characteristics of a Novel Xylose- and Alkali-tolerant GH 43 β-xylosidase from Penicillium oxalicum for Promoting Hemicellulose Degradation. Sci Rep 2017; 7:11600. [PMID: 28912429 PMCID: PMC5599605 DOI: 10.1038/s41598-017-11573-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 08/23/2017] [Indexed: 11/09/2022] Open
Abstract
β-xylosidase is a pivotal enzyme for complete degradation of xylan in hemicelluloses of lignocelluloses, and the xylose- and alkali-tolerant β-xylosidase with high catalytic activity is very attractive for promoting enzymatic hydrolysis of alkaline-pretreated lignocellulose. In this study, a novel intracellular glycoside hydrolase family 43 β-xylosidase gene (xyl43) from Penicillium oxalicum 114-2 was successfully high-level overexpressed in Pichia pastoris, and the secreted enzyme was characterized. The β-xylosidase Xyl43 exhibited great pH stability and high catalytic activity in the range of pH 6.0 to 8.0, and high tolerance to xylose with the Ki value of 28.09 mM. The Xyl43 could effectively promote enzymatic degradation of different source of xylan and hemicellulose contained in alkaline-pretreated corn stover, and high conversion of xylan to xylose could be obtained.
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13
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Sornlake W, Rattanaphanjak P, Champreda V, Eurwilaichitr L, Kittisenachai S, Roytrakul S, Fujii T, Inoue H. Characterization of cellulolytic enzyme system of Schizophyllum commune mutant and evaluation of its efficiency on biomass hydrolysis. Biosci Biotechnol Biochem 2017; 81:1289-1299. [PMID: 28489493 DOI: 10.1080/09168451.2017.1320937] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Schizophyllum commune is a basidiomycete equipped with an efficient cellulolytic enzyme system capable of growth on decaying woods. In this study, production of lignocellulose-degrading enzymes from S. commune mutant G-135 (SC-Cel) on various cellulosic substrates was examined. The highest cellulase activities including CMCase, FPase, and β-glucosidase were obtained on Avicel-PH101 while a wider range of enzymes attacking non-cellulosic polysaccharides and lignin were found when grown on alkaline-pretreated biomass. Proteomic analysis of SC-Cel also revealed a complex enzyme system comprising seven glycosyl hydrolase families with an accessory carbohydrate esterase, polysaccharide lyase, and auxiliary redox enzymes. SC-Cel obtained on Avicel-PH101 effectively hydrolyzed all agricultural residues with the maximum glucan conversion of 98.0% using corn cobs with an enzyme dosage of 5 FPU/g-biomass. The work showed potential of SC-Cel on hydrolysis of various herbaceous biomass with enhanced efficiency by addition external β-xylosidase.
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Affiliation(s)
- Warasirin Sornlake
- a Bioresouces Technology Unit , National Center for Genetic Engineering and Biotechnology , Khlong Luang , Thailand
| | - Phatcharamon Rattanaphanjak
- a Bioresouces Technology Unit , National Center for Genetic Engineering and Biotechnology , Khlong Luang , Thailand
| | - Verawat Champreda
- a Bioresouces Technology Unit , National Center for Genetic Engineering and Biotechnology , Khlong Luang , Thailand
| | - Lily Eurwilaichitr
- a Bioresouces Technology Unit , National Center for Genetic Engineering and Biotechnology , Khlong Luang , Thailand
| | - Suthathip Kittisenachai
- b Genome Technology Research Unit , National Center for Genetic Engineering and Biotechnology , Khlong Luang , Thailand
| | - Sittiruk Roytrakul
- b Genome Technology Research Unit , National Center for Genetic Engineering and Biotechnology , Khlong Luang , Thailand
| | - Tatsuya Fujii
- c Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST) , Higashi-Hiroshima , Japan
| | - Hiroyuki Inoue
- c Research Institute for Sustainable Chemistry , National Institute of Advanced Industrial Science and Technology (AIST) , Higashi-Hiroshima , Japan
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14
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de Sousa Gomes K, Maitan-Alfenas GP, de Andrade LGA, Falkoski DL, Guimarães VM, Alfenas AC, de Rezende ST. Purification and Characterization of Xylanases from the Fungus Chrysoporthe cubensis for Production of Xylooligosaccharides and Fermentable Sugars. Appl Biochem Biotechnol 2016; 182:818-830. [DOI: 10.1007/s12010-016-2364-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/07/2016] [Indexed: 11/24/2022]
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15
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Kumar S, Arumugam N, Permaul K, Singh S. Chapter 5 Thermostable Enzymes and Their Industrial Applications. Microb Biotechnol 2016. [DOI: 10.1201/9781315367880-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023] Open
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16
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Research Progress Concerning Fungal and Bacterial β-Xylosidases. Appl Biochem Biotechnol 2015; 178:766-95. [DOI: 10.1007/s12010-015-1908-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 10/22/2015] [Indexed: 01/08/2023]
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17
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Choengpanya K, Arthornthurasuk S, Wattana-amorn P, Huang WT, Plengmuankhae W, Li YK, Kongsaeree PT. Cloning, expression and characterization of β-xylosidase from Aspergillus niger ASKU28. Protein Expr Purif 2015; 115:132-40. [DOI: 10.1016/j.pep.2015.07.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 07/06/2015] [Accepted: 07/07/2015] [Indexed: 10/23/2022]
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18
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Huy ND, Nguyen CL, Seo JW, Kim DH, Park SM. Putative endoglucanase PcGH5 from Phanerochaete chrysosporium is a β-xylosidase that cleaves xylans in synergistic action with endo-xylanase. J Biosci Bioeng 2015; 119:416-20. [DOI: 10.1016/j.jbiosc.2014.09.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 08/12/2014] [Accepted: 09/14/2014] [Indexed: 10/24/2022]
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Biochemical characterization of two thermostable xylanolytic enzymes encoded by a gene cluster of Caldicellulosiruptor owensensis. PLoS One 2014; 9:e105264. [PMID: 25127169 PMCID: PMC4134300 DOI: 10.1371/journal.pone.0105264] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 07/19/2014] [Indexed: 02/04/2023] Open
Abstract
The xylanolytic extremely thermophilic bacterium Caldicellulosiruptor owensensis provides a promising platform for xylan utilization. In the present study, two novel xylanolytic enzymes, GH10 endo-β-1,4-xylanase (Coxyn A) and GH39 β-1,4-xylosidase (Coxyl A) encoded in one gene cluster of C.owensensis were heterogeneously expressed and biochemically characterized. The optimum temperature of the two xylanlytic enzymes was 75°C, and the respective optimum pH for Coxyn A and Coxyl A was 7.0 and 5.0. The difference of Coxyn A and Coxyl A in solution was existing as monomer and homodimer respectively, it was also observed in predicted secondary structure. Under optimum condition, the catalytic efficiency (kcat/Km) of Coxyn A was 366 mg ml−1 s−1 on beechwood xylan, and the catalytic efficiency (kcat/Km) of Coxyl A was 2253 mM−1 s−1 on pNP-β-D-xylopyranoside. Coxyn A degraded xylan to oligosaccharides, which were converted to monomer by Coxyl A. The two intracellular enzymes might be responsible for xylooligosaccharides utilization in C.owensensis, also provide a potential way for xylan degradation in vitro.
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