1
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Huang J, Zhang D, Omedi JO, Lei Y, Su X, Wu M, Huang W. Improving the inhibitory resistance of xylanase FgXyn11C from Fusarium graminearum to SyXIP-I by site-directed mutagenesis. Int J Biol Macromol 2024; 271:132434. [PMID: 38788879 DOI: 10.1016/j.ijbiomac.2024.132434] [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: 03/04/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024]
Abstract
The aim of this study was to improve the inhibitory resistance of xylanase FgXyn11C from Fusarium graminearum to XIP in cereal flour. Site saturation mutagenesis was performed using computer-aided redesign. Firstly, based on multiple primary structure alignments, the amino acid residues in the active site architecture were identified, and specific residue T144 in the thumb region of FgXyn11C was selected for site-saturation mutagenesis. After screening, FgXyn11CT144F was selected as the best mutant, as it displayed the highest enzymatic activity and resistance simultaneously compared to other mutants. The specific activity of FgXyn11CT144F was 208.8 U/mg and it exhibited complete resistance to SyXIP-I. Compared with the wild-type, FgXyn11CT144F displayed similar activity and the most resistant against SyXIP-I. The optimal temperature and pH of the wild-type and purified FgXyn11CT144F were similar at pH 5.0 and 30 °C. Our findings provided preliminary insight into how the specific residue at position 144 in the thumb region of FgXyn11C influenced the enzymatic properties and interacted with SyXIP-I. The inhibition sensitivity of FgXyn11C was reduced through directed evolution, leading to creation of the mutant enzyme FgXyn11CT144F. The FgXyn11CT144F resistance to SyXIP-I has potential application and can also provide references for engineering other resistant xylanases of the GHF11.
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Affiliation(s)
- Jing Huang
- State Key Laboratory of Food Science and Technology, the Laboratory of Baking and Fermentation Science, Cereals/Sourdough and Ingredient Functionality Research, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Dong Zhang
- School of Biotechnology, Jiangnan University, Wuxi 214122, China; Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China
| | - Jacob Ojobi Omedi
- State Key Laboratory of Food Science and Technology, the Laboratory of Baking and Fermentation Science, Cereals/Sourdough and Ingredient Functionality Research, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yuqing Lei
- School of Biotechnology, Jiangnan University, Wuxi 214122, China; Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China
| | - Xiaoya Su
- School of Biotechnology, Jiangnan University, Wuxi 214122, China; Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China
| | - Minchen Wu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, China.
| | - Weining Huang
- State Key Laboratory of Food Science and Technology, the Laboratory of Baking and Fermentation Science, Cereals/Sourdough and Ingredient Functionality Research, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
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2
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Zhang D, Zhu Z, Su X, Gao T, Li N, Huang W, Wu M. Cloning and characterization of a novel mesophilic xylanase gene Fgxyn3 from Fusarium graminearum Z-1. 3 Biotech 2024; 14:162. [PMID: 38803445 PMCID: PMC11127905 DOI: 10.1007/s13205-024-03973-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 03/01/2024] [Indexed: 05/29/2024] Open
Abstract
In order to search for high specific activity and the resistant xylanases to XIP-I and provide more alternative xylanases for industrial production, a strain of Fusarium graminearum from Triticum aestivum grains infected with filamentous fungus produced xylanases was isolated and identified. Three xylanase genes from Fusarium graminearum Z-1 were cloned and successfully expressed in E. coli and P. pastoris, respectively. The specific activities of Fgxyn1, EFgxyn2 and EFgxyn3 for birchwood xylan were 38.79, 0.85 and 243.83 U/mg in E. coli, and 40.11, 0 and 910.37 U/mg in P. pastoris, respectively. EFgxyn3 and PFgxyn3 had the similar optimum pH at 6.0 and pH stability at 5.0-9.0. However, they had different optimum temperature and thermal stability, with 30 °C for EFgxyn3 and 40 °C for PFgxyn3, and 4-35 °C for EFgxyn3 and 4-40 °C for PFgxyn3, respectively. The substrate spectrum and the kinetic parameters showed that the two xylanases also exhibited the highest xylanase activity and catalytic efficiency (kcat/km) toward birchwood xylan, with 243.83 U/mg and 61.44 mL/mg/s for EFgxyn3 and 910.37 U/mg and 910.37 mL/mg/s for PFgxyn3, respectively. This study provided a novel mesophilic xylanase with high specific activity and catalytic efficiency, thus making it a promising candidate for extensive applications in animal feed and food industry. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-03973-0.
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Affiliation(s)
- Dong Zhang
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122 China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122 China
| | - Zhu Zhu
- Science Island Branch of Graduate, University of Science and Technology of China, Hefei, 230026 China
| | - Xiaoya Su
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122 China
| | - Tiecheng Gao
- Guangzhou Puratos Food Co., Ltd., Guangzhou, 511400 China
| | - Ning Li
- Guangzhou Puratos Food Co., Ltd., Guangzhou, 511400 China
| | - Weining Huang
- State Key Laboratory of Food Science and Technology, and the Laboratory of Baking and Fermentation Science, Cereals/Sourdough and Ingredient Functionality Research, School of Food Science and Technology, Jiangnan University, Wuxi, 214122 China
| | - Minchen Wu
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122 China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122 China
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3
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Wang J, Bao C, Cao H, Huang F, Liu Y, Cao Y. Multi-copy expression of a protease-resistant xylanase with high xylan degradation ability and its application in broilers fed wheat-based diets. Int J Biol Macromol 2024; 257:128633. [PMID: 38070812 DOI: 10.1016/j.ijbiomac.2023.128633] [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: 09/09/2023] [Revised: 11/27/2023] [Accepted: 12/03/2023] [Indexed: 01/26/2024]
Abstract
The acidic thermostable xylanase (AT-xynA) has great potential in the feed industry, but its low activity is not conductive to large-scale production, and its application in poultry diets still needs to be further evaluated. In Experiment1, AT-xynA activity increased 3.10 times by constructing multi-copy strains, and the highest activity reached 10,018.29 ± 91.18 U/mL. AT-xynA showed protease resistance, high specificity for xylan substrates, xylobiose and xylotriose were the main hydrolysates. In Experiment2, 192 broilers were assigned into 3 treatments including a wheat-based diet, and the diets supplemented with AT-xynA during the entire period (XY-42) or exclusively during the early stage (XY-21). AT-xynA improved growth performance, while the performance of XY-21 and XY-42 was identical. To further clarify the mechanism underlying the particular effectiveness of AT-xynA during the early stage, 128 broilers were allotted into 2 treatments including a wheat-based diet and the diet supplemented with AT-xynA for 42 d in Experiment3. AT-xynA improved intestinal digestive function and microbiota composition, the benefits were stronger in younger broilers than older ones. Overall, the activity of AT-xynA exhibiting protease resistance and high xylan degradation ability increased by constructing multi-copy strains, and AT-xynA was particularly effective in improving broiler performance during the early stage.
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Affiliation(s)
- Jian Wang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China; Department of Nutrition and Health, China Agricultural University, Beijing 100091, People's Republic of China
| | - Chengling Bao
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Heng Cao
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Fei Huang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Yajing Liu
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Yunhe Cao
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China.
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4
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Plouhinec L, Neugnot V, Lafond M, Berrin JG. Carbohydrate-active enzymes in animal feed. Biotechnol Adv 2023; 65:108145. [PMID: 37030553 DOI: 10.1016/j.biotechadv.2023.108145] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/31/2023] [Accepted: 04/01/2023] [Indexed: 04/10/2023]
Abstract
Considering an ever-growing global population, which hit 8 billion people in the fall of 2022, it is essential to find solutions to avoid the competition between human food and animal feed for croplands. Agricultural co-products have become important components of the circular economy with their use in animal feed. Their implementation was made possible by the addition of exogenous enzymes in the diet, especially carbohydrate-active enzymes (CAZymes). In this review, we describe the diversity and versatility of microbial CAZymes targeting non-starch polysaccharides to improve the nutritional potential of diets containing cereals and protein meals. We focused our attention on cellulases, hemicellulases, pectinases which were often found to be crucial in vivo. We also highlight the performance and health benefits brought by the exogenous addition of enzymatic cocktails containing CAZymes in the diets of monogastric animals. Taking the example of the well-studied commercial cocktail Rovabio™, we discuss the evolution, constraints and future challenges faced by feed enzymes suppliers. We hope that this review will promote the use and development of enzyme solutions for industries to sustainably feed humans in the future.
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Affiliation(s)
- Lauriane Plouhinec
- INRAE, Aix-Marseille Univ., UMR1163 Biodiversité et Biotechnologie Fongiques, 13009 Marseille, France; ADISSEO, 135 Avenue de Rangueil, INSA Toulouse, Hall Gilbert Durand, 31400 Toulouse, France.
| | - Virginie Neugnot
- ADISSEO, 135 Avenue de Rangueil, INSA Toulouse, Hall Gilbert Durand, 31400 Toulouse, France
| | - Mickael Lafond
- INRAE, Aix-Marseille Univ., UMR1163 Biodiversité et Biotechnologie Fongiques, 13009 Marseille, France
| | - Jean-Guy Berrin
- INRAE, Aix-Marseille Univ., UMR1163 Biodiversité et Biotechnologie Fongiques, 13009 Marseille, France.
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5
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Tundo S, Mandalà G, Sella L, Favaron F, Bedre R, Kalunke RM. Xylanase Inhibitors: Defense Players in Plant Immunity with Implications in Agro-Industrial Processing. Int J Mol Sci 2022; 23:ijms232314994. [PMID: 36499321 PMCID: PMC9739030 DOI: 10.3390/ijms232314994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 12/03/2022] Open
Abstract
Xylanase inhibitors (XIs) are plant cell wall proteins largely distributed in monocots that inhibit the hemicellulose degrading activity of microbial xylanases. XIs have been classified into three classes with different structures and inhibition specificities, namely Triticum aestivum xylanase inhibitors (TAXI), xylanase inhibitor proteins (XIP), and thaumatin-like xylanase inhibitors (TLXI). Their involvement in plant defense has been established by several reports. Additionally, these inhibitors have considerable economic relevance because they interfere with the activity of xylanases applied in several agro-industrial processes. Previous reviews highlighted the structural and biochemical properties of XIs and hypothesized their role in plant defense. Here, we aimed to update the information on the genomic organization of XI encoding genes, the inhibition properties of XIs against microbial xylanases, and the structural properties of xylanase-XI interaction. We also deepened the knowledge of XI regulation mechanisms in planta and their involvement in plant defense. Finally, we reported the recently studied strategies to reduce the negative impact of XIs in agro-industrial processes and mentioned their allergenicity potential.
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Affiliation(s)
- Silvio Tundo
- Department of Land, Environment, Agriculture, and Forestry (TESAF), University of Padova, 35020 Legnaro, Italy
- Correspondence:
| | - Giulia Mandalà
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Luca Sella
- Department of Land, Environment, Agriculture, and Forestry (TESAF), University of Padova, 35020 Legnaro, Italy
| | - Francesco Favaron
- Department of Land, Environment, Agriculture, and Forestry (TESAF), University of Padova, 35020 Legnaro, Italy
| | - Renesh Bedre
- Texas A&M AgriLife Research and Extension Center, Texas A&M University System, Weslaco, TX 78596, USA
| | - Raviraj M. Kalunke
- Donald Danforth Plant Science Center, 975 N Warson Rd, 7 Olivette, St. Louis, MO 63132, USA
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6
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Sürmeli Y. Comparative investigation of bacterial thermoalkaliphilic GH11 xylanases at molecular phylogeny, sequence and structure level. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01169-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Characterisation of biomass degrading xylanolytic enzymes of Penicillium chrysogenum produced using sugarcane bagasse. Process Biochem 2022. [DOI: 10.1016/j.procbio.2021.11.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Aiewviriyasakul K, Bunterngsook B, Lekakarn H, Sritusnee W, Kanokratana P, Champreda V. Biochemical characterization of xylanase GH11 isolated from Aspergillus niger BCC14405 (XylB) and its application in xylooligosaccharide production. Biotechnol Lett 2021; 43:2299-2310. [PMID: 34718907 DOI: 10.1007/s10529-021-03202-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 10/22/2021] [Indexed: 01/03/2023]
Abstract
OBJECTIVE To develop an endo-β-1,4-xylanase with high specificity for production of prebiotic xylooligosaccharides that optimally works at moderate temperature desirable to reduce the energy cost in the production process. RESULTS The xylB gene, encoding for a glycosyl hydrolase family 11 xylanase from a thermoresistant fungus, Aspergillus niger BCC14405 was expressed in a methylotrophic yeast P. pastoris KM71 in a secreted form. The recombinant XylB showed a high specific activity of 3852 and 169 U mg-1 protein on beechwood xylan and arabinoxylan, respectively with no detectable side activities against different forms of cellulose (Avicel Ò PH101 microcrystalline cellulose, phosphoric acid swollen cellulose and carboxymethylcellulose). The enzyme worked optimally at 45 °C, pH 6.0. It showed a specific cleavage pattern by releasing xylobiose (X2) as the major product from xylooligosaccharides (X3 to X6) substrates. The highest XOS yield of 708 mg g-1 substrate comprising X2, X3 and X6 was obtained from beechwood xylan hydrolysis. CONCLUSION The enzyme is potent for XOS production and for saccharification of lignocellulosic biomass.
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Affiliation(s)
- Katesuda Aiewviriyasakul
- Enzyme Technology Research Team, Biorefinery Technology and Bioproduct Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand
| | - Benjarat Bunterngsook
- Enzyme Technology Research Team, Biorefinery Technology and Bioproduct Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand.
| | - Hataikarn Lekakarn
- Department of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand
| | - Wipawee Sritusnee
- Enzyme Technology Research Team, Biorefinery Technology and Bioproduct Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand
| | - Pattanop Kanokratana
- Enzyme Technology Research Team, Biorefinery Technology and Bioproduct Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand
| | - Verawat Champreda
- Enzyme Technology Research Team, Biorefinery Technology and Bioproduct Research Group, National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani, 12120, Thailand
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9
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The contribution of specific subsites to catalytic activities in active site architecture of a GH11 xylanase. Appl Microbiol Biotechnol 2020; 104:8735-8745. [DOI: 10.1007/s00253-020-10865-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/11/2020] [Accepted: 08/26/2020] [Indexed: 12/14/2022]
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10
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Zhu D, Liu X, Xie X, Yang S, Lin H, Chen H. Characteristics of a
XIP
‐resistant xylanase from
Neocallimastix
sp.
GMLF
1 and its advantage in barley malt saccharification. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dongdong Zhu
- College of Life Sciences Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 China
| | - Xinyu Liu
- College of Life Sciences Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 China
| | - Xia Xie
- College of Life Sciences Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 China
| | - Sen Yang
- College of Life Sciences Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 China
| | - Hui Lin
- College of Life Sciences Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 China
| | - Hongge Chen
- College of Life Sciences Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 China
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11
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Xiang L, Lu Y, Wang H, Wang M, Zhang G. Improving the specific activity and pH stability of xylanase XynHBN188A by directed evolution. BIORESOUR BIOPROCESS 2019. [DOI: 10.1186/s40643-019-0262-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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12
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Champreda V, Mhuantong W, Lekakarn H, Bunterngsook B, Kanokratana P, Zhao XQ, Zhang F, Inoue H, Fujii T, Eurwilaichitr L. Designing cellulolytic enzyme systems for biorefinery: From nature to application. J Biosci Bioeng 2019; 128:637-654. [PMID: 31204199 DOI: 10.1016/j.jbiosc.2019.05.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/06/2019] [Accepted: 05/11/2019] [Indexed: 12/14/2022]
Abstract
Cellulolytic enzymes play a key role on conversion of lignocellulosic plant biomass to biofuels and biochemicals in sugar platform biorefineries. In this review, we survey composite carbohydrate-active enzymes (CAZymes) among groups of cellulolytic fungi and bacteria that exist under aerobic and anaerobic conditions. Recent advances in designing effective cellulase mixtures are described, starting from the most complex microbial consortium-based enzyme preparations, to single-origin enzymes derived from intensively studied cellulase producers such as Trichoderma reesei, Talaromyces cellulolyticus, and Penicellium funiculosum, and the simplest minimal enzyme systems comprising selected sets of mono-component enzymes tailor-made for specific lignocellulosic substrates. We provide a comprehensive update on studies in developing high-performance cellulases for biorefineries.
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Affiliation(s)
- Verawat Champreda
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani 12120, Thailand.
| | - Wuttichai Mhuantong
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani 12120, Thailand
| | - Hataikarn Lekakarn
- Department of Biotechnology, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Phahonyothin Road, Khlong Luang, Pathumthani 12120, Thailand
| | - Benjarat Bunterngsook
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani 12120, Thailand
| | - Pattanop Kanokratana
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani 12120, Thailand
| | - Xin-Qing Zhao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Fei Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hiroyuki Inoue
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, 3-11-32 Kagamiyama, Hiroshima 739-0046, Japan
| | - Tatsuya Fujii
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, 3-11-32 Kagamiyama, Hiroshima 739-0046, Japan
| | - Lily Eurwilaichitr
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathumthani 12120, Thailand
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13
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Vangsøe CT, Sørensen JF, Bach Knudsen KE. Aleurone cells are the primary contributor to arabinoxylan oligosaccharide production from wheat bran after treatment with cell wall‐degrading enzymes. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14201] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Cecilie Toft Vangsøe
- Department of Animal Science Aarhus University Blichers Allé 20 DK‐8830 Tjele Denmark
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14
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Solid-state cultivation of recombinant Aspergillus nidulans to co-produce xylanase, arabinofuranosidase, and xylooligosaccharides from soybean fibre. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.05.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Qian C, Liu N, Yan X, Wang Q, Zhou Z, Wang Q. Engineering a high-performance, metagenomic-derived novel xylanase with improved soluble protein yield and thermostability. Enzyme Microb Technol 2015; 70:35-41. [DOI: 10.1016/j.enzmictec.2014.11.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 11/03/2014] [Accepted: 11/21/2014] [Indexed: 11/29/2022]
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16
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Molecular characterization of a new alkaline-tolerant xylanase from Humicola insolens Y1. BIOMED RESEARCH INTERNATIONAL 2015; 2015:149504. [PMID: 25629035 PMCID: PMC4299769 DOI: 10.1155/2015/149504] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 12/20/2014] [Indexed: 11/28/2022]
Abstract
An endo-1,4-β-xylanase-encoding gene, xyn11B, was cloned from the thermophilic fungus Humicola insolens Y1. The gene encodes a multimodular xylanase that consists of a typical hydrophobic signal sequence, a catalytic domain of glycoside hydrolase (GH) family 11, a glycine-rich linker, and a family 1 carbohydrate binding module (CBM1). Deduced Xyn11B shares the highest identity of 74% with a putative xylanase from Podospora anserina S mat+. Recombinant Xyn11B was successfully expressed in Pichia pastoris and purified to electrophoretic homogeneity. Xyn11B had a high specific activity of 382.0 U mg−1 towards beechwood xylan and showed optimal activity at pH 6.0 and 50°C. Distinct from most reported acidic fungal xylanases, Xyn11B was alkaline-tolerant, retaining 30.7% of the maximal activity at pH 9.0. The Km and Vmax values for beechwood xylan were 2.2 mg mL−1 and 462.8 μmol min−1 mg−1, respectively. The enzyme exhibited a wider substrate specificity and produced a mixture of xylooligosaccharides. All these favorable enzymatic properties make Xyn11B attractive for potential applications in various industries.
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17
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Substrate-Binding Site of Family 11 Xylanase fromBacillus firmusK-1 by Molecular Docking. Biosci Biotechnol Biochem 2014; 73:833-9. [DOI: 10.1271/bbb.80731] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Lafond M, Guais O, Maestracci M, Bonnin E, Giardina T. Four GH11 xylanases from the xylanolytic fungus Talaromyces versatilis act differently on (arabino)xylans. Appl Microbiol Biotechnol 2014; 98:6339-52. [DOI: 10.1007/s00253-014-5606-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/05/2014] [Accepted: 02/07/2014] [Indexed: 12/12/2022]
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19
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Valenzuela SV, Diaz P, Pastor FIJ. Xyn11E from Paenibacillus barcinonensis BP-23: a LppX-chaperone-dependent xylanase with potential for upgrading paper pulps. Appl Microbiol Biotechnol 2014; 98:5949-57. [DOI: 10.1007/s00253-014-5565-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 12/20/2013] [Accepted: 01/21/2014] [Indexed: 12/21/2022]
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20
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Driss D, Berrin JG, Juge N, Bhiri F, Ghorbel R, Chaabouni SE. Functional characterization of Penicillium occitanis Pol6 and Penicillium funiculosum GH11 xylanases. Protein Expr Purif 2013; 90:195-201. [DOI: 10.1016/j.pep.2013.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 06/05/2013] [Accepted: 06/07/2013] [Indexed: 10/26/2022]
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21
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Zhao L, Meng K, Bai Y, Shi P, Huang H, Luo H, Wang Y, Yang P, Song W, Yao B. Two family 11 xylanases from Achaetomium sp. Xz-8 with high catalytic efficiency and application potentials in the brewing industry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:6880-6889. [PMID: 23790084 DOI: 10.1021/jf4001296] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This study identified two family-11 xylanase genes (xynC81 and xynC83) in Achaetomium sp. Xz-8, a thermophilic strain from a desert area with substantial xylanase activity, and successfully expressed them in Pichia pastoris . Their deduced amino acid sequences showed the highest identity of ≤90% to known fungal xylanases and of ≤62% with each other. The purified recombinant xylanases showed optimal activities at pH 5.5 and 60-65 °C and exhibited stability over pH 5.0-10.0 and temperatures at 55 °C and below. XynC81 had high catalytic efficiency (6082 mL/s/mg), and XynC83 was favorable for xylooligosaccharide production. Under simulated mashing conditions, combination of XynC83 and a commercial β-glucanase improved the filtration rate by 34.76%, which is much better than that of Novozymes Ultraflo (20.71%). XynC81 and XynC83 had a synergistic effect on viscosity reduction (7.08%), which is comparable with that of Ultraflo (8.47%). Thus, XynC81 and XynC83 represent good candidates for application in the brewing industry.
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Affiliation(s)
- Liang Zhao
- 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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22
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Two novel GH11 endo-xylanases from Myceliophthora thermophila C1 act differently toward soluble and insoluble xylans. Enzyme Microb Technol 2013; 53:25-32. [DOI: 10.1016/j.enzmictec.2013.03.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 02/27/2013] [Accepted: 03/21/2013] [Indexed: 11/24/2022]
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23
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Couturier M, Roussel A, Rosengren A, Leone P, Stålbrand H, Berrin JG. Structural and biochemical analyses of glycoside hydrolase families 5 and 26 β-(1,4)-mannanases from Podospora anserina reveal differences upon manno-oligosaccharide catalysis. J Biol Chem 2013; 288:14624-14635. [PMID: 23558681 DOI: 10.1074/jbc.m113.459438] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The microbial deconstruction of the plant cell wall is a key biological process that is of increasing importance with the development of a sustainable biofuel industry. The glycoside hydrolase families GH5 (PaMan5A) and GH26 (PaMan26A) endo-β-1,4-mannanases from the coprophilic ascomycete Podospora anserina contribute to the enzymatic degradation of lignocellulosic biomass. In this study, P. anserina mannanases were further subjected to detailed comparative analysis of their substrate specificities, active site organization, and transglycosylation capacity. Although PaMan5A displays a classical mode of action, PaMan26A revealed an atypical hydrolysis pattern with the release of mannotetraose and mannose from mannopentaose resulting from a predominant binding mode involving the -4 subsite. The crystal structures of PaMan5A and PaMan26A were solved at 1.4 and 2.85 Å resolution, respectively. Analysis of the PaMan26A structure supported strong interaction with substrate at the -4 subsite mediated by two aromatic residues Trp-244 and Trp-245. The PaMan26A structure appended to its family 35 carbohydrate binding module revealed a short and proline-rich rigid linker that anchored together the catalytic and the binding modules.
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Affiliation(s)
- Marie Couturier
- INRA, UMR1163 BCF, Aix Marseille Université, Polytech Marseille, F-13288 Marseille, France
| | - Alain Roussel
- Architecture et Fonction des Macromolécules Biologiques, Aix Marseille Université, CNRS UMR7257, F-13288 Marseille, France
| | - Anna Rosengren
- Department of Biochemistry and Structural Biology, Lund University, P. O. Box 124, S-221 00, Lund, Sweden
| | - Philippe Leone
- Architecture et Fonction des Macromolécules Biologiques, Aix Marseille Université, CNRS UMR7257, F-13288 Marseille, France
| | - Henrik Stålbrand
- Department of Biochemistry and Structural Biology, Lund University, P. O. Box 124, S-221 00, Lund, Sweden
| | - Jean-Guy Berrin
- INRA, UMR1163 BCF, Aix Marseille Université, Polytech Marseille, F-13288 Marseille, France.
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Singh RK, Tiwari MK, Kim D, Kang YC, Ramachandran P, Lee JK. Molecular cloning and characterization of a GH11 endoxylanase from Chaetomium globosum, and its use in enzymatic pretreatment of biomass. Appl Microbiol Biotechnol 2012. [PMID: 23184220 DOI: 10.1007/s00253-012-4577-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
An endo-1,4-β-xylanase gene, xylcg, was cloned from Chaetomium globosum and successfully expressed in Escherichia coli. The complete gene of 675 bp was amplified, cloned into the pET 28(a) vector, and expressed. The optimal conditions for the highest activity of the purified recombinant XylCg were observed at a temperature of 40 °C and pH of 5.5. Using oat-spelt xylan, the determined K m, V max, and k cat/K m values were 0.243 mg ml⁻¹, 4,530 U mg⁻¹ protein, and 7,640 ml s⁻¹ mg⁻¹, respectively. A homology model and sequence analysis of XylCg, along with the biochemical properties, confirmed that XylCg belongs to the GH11 family. Rice straw pretreated with XylCg showed 30 % higher conversion yield than the rice straw pretreated with a commercial xylanase. Although xylanases have been characterized from fungal and bacterial sources, C. globosum XylCg is distinguished from other xylanases by its high catalytic efficiency and its effectiveness in the pretreatment of lignocellulosic biomass.
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Affiliation(s)
- Raushan Kumar Singh
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-Dong, Gwangjin-Gu, Seoul 143-701, South Korea
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25
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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: 35] [Impact Index Per Article: 2.9] [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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Delcour JA, Rouau X, Courtin CM, Poutanen K, Ranieri R. Technologies for enhanced exploitation of the health-promoting potential of cereals. Trends Food Sci Technol 2012. [DOI: 10.1016/j.tifs.2012.01.007] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Beloqui A, Sanchez-Ruiz A, Martin-Lomas M, Reichardt NC. A surface-based mass spectrometry method for screening glycosidase specificity in environmental samples. Chem Commun (Camb) 2011; 48:1701-3. [PMID: 22189916 DOI: 10.1039/c2cc16537f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A new surface-based MALDI-Tof-MS glycosyl hydrolase assay has been developed in which lipid-tagged oligosaccharides, representing defined fragments of major plant cell wall polysaccharides, are immobilized via hydrophobic interactions on an alkylthiol functionalised gold sample plate and employed in the functional screening of several purified enzymes, environmental samples and saliva.
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Affiliation(s)
- Ana Beloqui
- Biofunctional Nanomaterials Department, CICbiomaGUNE, Paseo Miramon 182, 20009 San Sebastian, Spain
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28
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A thermostable GH45 endoglucanase from yeast: impact of its atypical multimodularity on activity. Microb Cell Fact 2011; 10:103. [PMID: 22145993 PMCID: PMC3247070 DOI: 10.1186/1475-2859-10-103] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Accepted: 12/06/2011] [Indexed: 11/21/2022] Open
Abstract
Background The gene encoding an atypical multi-modular glycoside hydrolase family 45 endoglucanase bearing five different family 1 carbohydrate binding modules (CBM1), designated PpCel45A, was identified in the Pichia pastoris GS115 genome. Results PpCel45A (full-length open reading frame), and three derived constructs comprising (i) the catalytic module with its proximal CBM1, (ii) the catalytic module only, and (iii) the five CBM1 modules without catalytic module, were successfully expressed to high yields (up to 2 grams per litre of culture) in P. pastoris X33. Although the constructs containing the catalytic module displayed similar activities towards a range of glucans, comparison of their biochemical characteristics revealed striking differences. We observed a high thermostability of PpCel45A (Half life time of 6 h at 80°C), which decreased with the removal of CBMs and glycosylated linkers. However, both binding to crystalline cellulose and hydrolysis of crystalline cellulose and cellohexaose were substantially boosted by the presence of one CBM rather than five. Conclusions The present study has revealed the specific features of the first characterized endo β-1,4 glucanase from yeast, whose thermostability is promising for biotechnological applications related to the saccharification of lignocellulosic biomass such as consolidated bioprocessing.
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Paës G, Berrin JG, Beaugrand J. GH11 xylanases: Structure/function/properties relationships and applications. Biotechnol Adv 2011; 30:564-92. [PMID: 22067746 DOI: 10.1016/j.biotechadv.2011.10.003] [Citation(s) in RCA: 284] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 10/06/2011] [Accepted: 10/13/2011] [Indexed: 01/02/2023]
Abstract
For technical, environmental and economical reasons, industrial demands for process-fitted enzymes have evolved drastically in the last decade. Therefore, continuous efforts are made in order to get insights into enzyme structure/function relationships to create improved biocatalysts. Xylanases are hemicellulolytic enzymes, which are responsible for the degradation of the heteroxylans constituting the lignocellulosic plant cell wall. Due to their variety, xylanases have been classified in glycoside hydrolase families GH5, GH8, GH10, GH11, GH30 and GH43 in the CAZy database. In this review, we focus on GH11 family, which is one of the best characterized GH families with bacterial and fungal members considered as true xylanases compared to the other families because of their high substrate specificity. Based on an exhaustive analysis of the sequences and 3D structures available so far, in relation with biochemical properties, we assess biochemical aspects of GH11 xylanases: structure, catalytic machinery, focus on their "thumb" loop of major importance in catalytic efficiency and substrate selectivity, inhibition, stability to pH and temperature. GH11 xylanases have for a long time been used as biotechnological tools in various industrial applications and represent in addition promising candidates for future other uses.
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Affiliation(s)
- Gabriel Paës
- INRA, UMR614 FARE, 2 esplanade Roland-Garros, F-51686 Reims, France.
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30
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Aga1, the first alpha-Galactosidase from the human bacteria Ruminococcus gnavus E1, efficiently transcribed in gut conditions. Res Microbiol 2011; 163:14-21. [PMID: 22036918 DOI: 10.1016/j.resmic.2011.10.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Accepted: 09/14/2011] [Indexed: 11/23/2022]
Abstract
Differential gene expression analysis was performed in monoxenic mice colonized with Ruminococcus gnavus strain E1, a major endogenous member of the gut microbiota. RNA arbitrarily primed-PCR fingerprinting assays allowed to specifically detect the in vivo expression of the aga1 gene, which was further confirmed by RT-PCR. The aga1 gene encoded a protein of 744 residues with calculated molecular mass of 85,207 Da. Aga1 exhibited significant similarity with previously characterized α-Galactosidases of the GH 36 family. Purified recombinant protein demonstrated high catalytic activity (104 ± 7 U mg(-1)) and efficient p-nitrophenyl-α-d-galactopyranoside hydrolysis [k(cat)/K(m) = 35.115 ± 8.82 s(-1) mM(-1) at 55 °C and k(cat)/K(m) = 17.48 ± 4.25 s(-1) mM(-1) at 37 °C].
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31
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Driss D, Bhiri F, Elleuch L, Bouly N, Stals I, Miled N, Blibech M, Ghorbel R, Chaabouni SE. Purification and properties of an extracellular acidophilic endo-1,4-β-xylanase, naturally deleted in the “thumb”, from Penicillium occitanis Pol6. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.02.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Lafond M, Tauzin A, Desseaux V, Bonnin E, Ajandouz EH, Giardina T. GH10 xylanase D from Penicillium funiculosum: biochemical studies and xylooligosaccharide production. Microb Cell Fact 2011; 10:20. [PMID: 21466666 PMCID: PMC3083334 DOI: 10.1186/1475-2859-10-20] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Accepted: 04/05/2011] [Indexed: 11/20/2022] Open
Abstract
Background The filamentous fungus Penicillium funiculosum produces a range of glycoside hydrolases (GH). The XynD gene, encoding the sole P. funiculosum GH10 xylanase described so far, was cloned into the pPICZαA vector and expressed in methylotrophe yeast Pichia pastoris, in order to compare the results obtained with the P. funiculosum GH11 xylanases data. Results High level expression of recombinant XynD was obtained with a secretion of around 60 mg.L-1. The protein was purified to homogeneity using one purification step. The apparent size on SDS-PAGE was around 64 kDa and was 46 kDa by mass spectrometry thus higher than the expected molecular mass of 41 kDa. The recombinant protein was N- and O-glycosylated, as demonstrated using glycoprotein staining and deglycosylation reactions, which explained the discrepancy in molecular mass. Enzyme-catalysed hydrolysis of low viscosity arabinoxylan (LVAX) was maximal at pH 5.0 with Km(app) and kcat/Km(app) of 3.7 ± 0.2 (mg.mL-1) and 132 (s-1mg-1.mL), respectively. The activity of XynD was optimal at 80°C and the recombinant enzyme has shown an interesting high thermal stability at 70°C for at least 180 min without loss of activity. The enzyme had an endo-mode of action on xylan forming mainly xylobiose and short-chain xylooligosaccharides (XOS). The initial rate data from the hydrolysis of short XOS indicated that the catalytic efficiency increased slightly with increasing their chain length with a small difference of the XynD catalytic efficiency against the different XOS. Conclusion Because of its attractive properties XynD might be considered for biotechnological applications. Moreover, XOS hydrolysis suggested that XynD possess four catalytic subsites with a high energy of interaction with the substrate and a fifth subsite with a small energy of interaction, according to the GH10 xylanase literature data.
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Affiliation(s)
- Mickael Lafond
- Université Paul Cézanne, Faculté des Sciences et Techniques Saint-Jérôme, 13397 Marseille Cedex 20, France
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Podospora anserina hemicellulases potentiate the Trichoderma reesei secretome for saccharification of lignocellulosic biomass. Appl Environ Microbiol 2010; 77:237-46. [PMID: 21037302 DOI: 10.1128/aem.01761-10] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
To improve the enzymatic hydrolysis (saccharification) of lignocellulosic biomass by Trichoderma reesei, a set of genes encoding putative polysaccharide-degrading enzymes were selected from the coprophilic fungus Podospora anserina using comparative genomics. Five hemicellulase-encoding genes were successfully cloned and expressed as secreted functional proteins in the yeast Pichia pastoris. These novel fungal CAZymes belonging to different glycoside hydrolase families (PaMan5A and PaMan26A mannanases, PaXyn11A xylanase, and PaAbf51A and PaAbf62A arabinofuranosidases) were able to break down their predicted cognate substrates. Although PaMan5A and PaMan26A displayed similar specificities toward a range of mannan substrates, they differed in their end products, suggesting differences in substrate binding. The N-terminal CBM35 module of PaMan26A displayed dual binding specificity toward xylan and mannan. PaXyn11A harboring a C-terminal CBM1 module efficiently degraded wheat arabinoxylan, releasing mainly xylobiose as end product. PaAbf51A and PaAbf62A arabinose-debranching enzymes exhibited differences in activity toward arabinose-containing substrates. Further investigation of the contribution made by each P. anserina auxiliary enzyme to the saccharification of wheat straw and spruce demonstrated that the endo-acting hemicellulases (PaXyn11A, PaMan5A, and PaMan26A) individually supplemented the secretome of the industrial T. reesei CL847 strain. The most striking effect was obtained with PaMan5A that improved the release of total sugars by 28% and of glucose by 18%, using spruce as lignocellulosic substrate.
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Gusakov AV. Proteinaceous inhibitors of microbial xylanases. BIOCHEMISTRY (MOSCOW) 2010; 75:1185-99. [DOI: 10.1134/s0006297910100019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Rasmussen LE, Sørensen JF, Meyer AS. Kinetics and substrate selectivity of a Triticum aestivum xylanase inhibitor (TAXI) resistant D11F/R122D variant of Bacillus subtilis XynA xylanase. J Biotechnol 2010; 146:207-14. [DOI: 10.1016/j.jbiotec.2010.02.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2009] [Revised: 02/13/2010] [Accepted: 02/16/2010] [Indexed: 11/28/2022]
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36
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Pollet A, Delcour JA, Courtin CM. Structural determinants of the substrate specificities of xylanases from different glycoside hydrolase families. Crit Rev Biotechnol 2010; 30:176-91. [DOI: 10.3109/07388551003645599] [Citation(s) in RCA: 176] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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37
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Lagaert S, Beliën T, Volckaert G. Plant cell walls: Protecting the barrier from degradation by microbial enzymes. Semin Cell Dev Biol 2009; 20:1064-73. [DOI: 10.1016/j.semcdb.2009.05.008] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Accepted: 05/25/2009] [Indexed: 10/20/2022]
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38
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Gusakov AV, Ustinov BB. ORIGINAL RESEARCH: Assaying sensitivity of fungal xylanases to proteinaceous inhibitors from a rye extract: Two GH10 family xylanases resistant to XIP-like inhibitors. Ind Biotechnol (New Rochelle N Y) 2009. [DOI: 10.1089/ind.2009.5.104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Alexander V. Gusakov
- Division of Chemical Enzymology, Department of Chemistry MV Lomonosov Moscow State University, Moscow 119991, Russia; Corresponding author
| | - Boris B. Ustinov
- Division of Chemical Enzymology, Department of Chemistry MV Lomonosov Moscow State University, Moscow 119991, Russia
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39
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Fusarium graminearum xylanases show different functional stabilities, substrate specificities and inhibition sensitivities. Enzyme Microb Technol 2009. [DOI: 10.1016/j.enzmictec.2008.12.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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40
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Carapito R, Carapito C, Jeltsch JM, Phalip V. Efficient hydrolysis of hemicellulose by a Fusarium graminearum xylanase blend produced at high levels in Escherichia coli. BIORESOURCE TECHNOLOGY 2009; 100:845-850. [PMID: 18707875 DOI: 10.1016/j.biortech.2008.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2008] [Revised: 07/01/2008] [Accepted: 07/02/2008] [Indexed: 05/26/2023]
Abstract
A Fusarium graminearum-based enzyme blend for the efficient hydrolysis of hemicellulose, a crucial step for competitive bioethanol production, is described. The heretofore-uncharacterized endo-1,4-beta-xylanase (XylD), 1,4-beta-xylosidase (XyloA), and bifunctional xylosidase/arabinofuranosidase (Xylo/ArabA) were produced at high levels in Escherichia coli (10-38 mg/l). They displayed compatible pH and temperature-dependences, allowing their utilization for simultaneous substrate digestions. Monosaccharide analysis indicated a strong positive synergism between the enzymes during the degradation of oat spelt xylan. Two units of each protein catalyzed the release of 61% and 15% of the total amount of available d-xylose and l-arabinose, respectively, in only 4 h. The detailed cooperative mechanism of the three hydrolases was elucidated by polysaccharide analysis using carbohydrate gel electrophoresis (PACE) and the enzymes were shown to be suitable for the partial hydrolysis of pretreated crude plant biomass.
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Affiliation(s)
- Raphaël Carapito
- U.M.R. 7175, Ecole Supérieure de Biotechnologie de Strasbourg, Université Louis Pasteur-CNRS, Boulevard Sébastien Brandt, BP 10413, 67412 Illkirch-Graffenstaden, France
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Cervera Tison M, André-Leroux G, Lafond M, Georis J, Juge N, Berrin JG. Molecular determinants of substrate and inhibitor specificities of the Penicillium griseofulvum family 11 xylanases. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2008; 1794:438-45. [PMID: 19118652 DOI: 10.1016/j.bbapap.2008.11.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Revised: 11/21/2008] [Accepted: 11/24/2008] [Indexed: 11/18/2022]
Abstract
Penicillium griseofulvum possesses two endo-(1,4)-beta-xylanase genes, PgXynA and PgXynB, belonging to family 11 glycoside hydrolases. The enzymes share 69% identity, a similar hydrolysis profile i.e. the predominant production of xylobiose and xylotriose as end products from wheat arabinoxylan and a specificity region of six potential xylose subsites, but differ in terms of catalytic efficiency which can be explained by subtle structural differences in the positioning of xylohexaose in the PgXynB model. Site-directed mutagenesis of the "thumb" region revealed structural basis of PgXynB substrate and inhibitor specificities. We produced variants displaying increased catalytic efficiency towards wheat arabinoxylan and xylo-oligosaccharides and identified specific determinants in PgXynB "thumb" region responsible for resistance to the wheat xylanase inhibitor XIP-I. Based on kinetic analysis and homology modeling, we suggested that Pro130(PgXynB), Lys131(PgXynB) and Lys132(PgXynB) hamper flexibility of the loop forming the "thumb" and interfere by steric hindrance with the inhibitor.
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Affiliation(s)
- Marine Cervera Tison
- Biosciences ISM(2) UMR-CNRS-6263, Université Paul Cézanne Aix Marseille III, Av. Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
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André-Leroux G, Berrin JG, Georis J, Arnaut F, Juge N. Structure-based mutagenesis of Penicillium griseofulvum xylanase using computational design. Proteins 2008; 72:1298-307. [DOI: 10.1002/prot.22029] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Crystallographic analysis shows substrate binding at the -3 to +1 active-site subsites and at the surface of glycoside hydrolase family 11 endo-1,4-beta-xylanases. Biochem J 2008; 410:71-9. [PMID: 17983355 DOI: 10.1042/bj20071128] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
GH 11 (glycoside hydrolase family 11) xylanases are predominant enzymes in the hydrolysis of heteroxylan, an abundant structural polysaccharide in the plant cell wall. To gain more insight into the protein-ligand interactions of the glycone as well as the aglycone subsites of these enzymes, catalytically incompetent mutants of the Bacillus subtilis and Aspergillus niger xylanases were crystallized, soaked with xylo-oligosaccharides and subjected to X-ray analysis. For both xylanases, there was clear density for xylose residues in the -1 and -2 subsites. In addition, for the B. subtilis xylanase, there was also density for xylose residues in the -3 and +1 subsite showing the spanning of the -1/+1 subsites. These results, together with the observation that some residues in the aglycone subsites clearly adopt a different conformation upon substrate binding, allowed us to identify the residues important for substrate binding in the aglycone subsites. In addition to substrate binding in the active site of the enzymes, the existence of an unproductive second ligand-binding site located on the surface of both the B. subtilis and A. niger xylanases was observed. This extra binding site may have a function similar to the separate carbohydrate-binding modules of other glycoside hydrolase families.
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Factors affecting xylanase functionality in the degradation of arabinoxylans. Biotechnol Lett 2008; 30:1139-50. [DOI: 10.1007/s10529-008-9669-6] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2007] [Revised: 02/04/2008] [Accepted: 02/07/2008] [Indexed: 10/22/2022]
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Understanding the structural basis for substrate and inhibitor recognition in eukaryotic GH11 xylanases. J Mol Biol 2007; 375:1293-305. [PMID: 18078955 DOI: 10.1016/j.jmb.2007.11.007] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Revised: 11/01/2007] [Accepted: 11/02/2007] [Indexed: 11/21/2022]
Abstract
Endo-beta1,4-xylanases (xylanases) hydrolyse the beta1,4 glycosidic bonds in the backbone of xylan. Although xylanases from glycoside hydrolase family 11 (GH11) have been extensively studied, several issues remain unresolved. Thus, the mechanism by which these enzymes hydrolyse decorated xylans is unclear and the structural basis for the variation in catalytic activity within this family is unknown. Furthermore, the mechanism for the differences in the inhibition of fungal GH11 enzymes by the wheat protein XIP-I remains opaque. To address these issues we report the crystal structure and biochemical properties of the Neocallimastix patriciarum xylanase NpXyn11A, which displays unusually high catalytic activity and is one of the few fungal GH11 proteins not inhibited by XIP-I. Although the structure of NpXyn11A could not be determined in complex with substrates, we have been able to investigate how GH11 enzymes hydrolyse decorated substrates by solving the crystal structure of a second GH11 xylanase, EnXyn11A (encoded by an environmental DNA sample), bound to ferulic acid-1,5-arabinofuranose-alpha1,3-xylotriose (FAX(3)). The crystal structure of the EnXyn11A-FAX(3) complex shows that solvent exposure of the backbone xylose O2 and O3 groups at subsites -3 and +2 allow accommodation of alpha1,2-linked 4-methyl-D-glucuronic acid and L-arabinofuranose side chains. Furthermore, the ferulated arabinofuranose side chain makes hydrogen bonds and hydrophobic interactions at the +2 subsite, indicating that the decoration may represent a specificity determinant at this aglycone subsite. The structure of NpXyn11A reveals potential -3 and +3 subsites that are kinetically significant. The extended substrate-binding cleft of NpXyn11A, compared to other GH11 xylanases, may explain why the Neocallimastix enzyme displays unusually high catalytic activity. Finally, the crystal structure of NpXyn11A shows that the resistance of the enzyme to XIP-I is not due solely to insertions in the loop connecting beta strands 11 and 12, as suggested previously, but is highly complex.
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