1
|
Pasin TM, Lucas RC, de Oliveira TB, McLeish MJ, Polizeli MDLTM. A new halotolerant xylanase from Aspergillus clavatus expressed in Escherichia coli with catalytic efficiency improved by site-directed mutagenesis. 3 Biotech 2024; 14:178. [PMID: 38855145 PMCID: PMC11156621 DOI: 10.1007/s13205-024-04021-7] [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: 03/07/2024] [Accepted: 05/27/2024] [Indexed: 06/11/2024] Open
Abstract
Daily agro-industrial waste, primarily cellulose, lignin, and hemicellulose, poses a significant environmental challenge. Harnessing lignocellulolytic enzymes, particularly endo-1,4-β-xylanases, for efficient saccharification is a cost-effective strategy, transforming biomass into high-value products. This study focuses on the cloning, expression, site-directed mutagenesis, purification, three-dimensional modeling, and characterization of the recombinant endo-1,4-β-xylanase (XlnA) from Aspergillus clavatus in Escherichia coli. This work includes evaluation of the stability at varied NaCl concentrations, determining kinetic constants, and presenting the heterologous expression of XlnAΔ36 using pET22b(+). The expression led to purified enzymes with robust stability across diverse pH levels, exceptional thermostability at 50 °C, and 96-100% relative stability after 24 h in 3.0 M NaCl. Three-dimensional modeling reveals a GH11 architecture with catalytic residues Glu 132 and 22. XlnAΔ36 demonstrates outstanding kinetic parameters compared to other endo-1,4-β-xylanases, indicating its potential for industrial enzymatic cocktails, enhancing saccharification. Moreover, its ability to yield high-value compounds, such as sugars, suggests a promising and ecologically positive alternative for the food and biotechnology industries.
Collapse
Affiliation(s)
- Thiago M. Pasin
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP 14049-900 Brazil
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202 USA
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249 USA
| | - Rosymar C. Lucas
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP 14049-900 Brazil
- Department of Biochemistry, Institute of Biomedical Sciences, Federal University of Alfenas, Alfenas, MG 37130-001 Brazil
| | - Tássio B. de Oliveira
- Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14040-901 Brazil
- Department of Systematics and Ecology, Center for Exact and Nature Sciences, Federal University of Paraíba, João Pessoa, PB 58051-900 Brazil
| | - Michael J. McLeish
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202 USA
| | - Maria de Lourdes T. M. Polizeli
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP 14049-900 Brazil
- Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14040-901 Brazil
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
Liu E, Segato F, Wilkins MR. Fed-batch production of Thermothelomyces thermophilus lignin peroxidase using a recombinant Aspergillus nidulans strain in stirred-tank bioreactor. BIORESOURCE TECHNOLOGY 2021; 325:124700. [PMID: 33461124 DOI: 10.1016/j.biortech.2021.124700] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/06/2021] [Accepted: 01/07/2021] [Indexed: 06/12/2023]
Abstract
Enzymatic lignin depolymerization is considered a favorable approach to utilize lignin due to the higher selectivity and less energy requirement when compared to thermochemical lignin valorization. Lignin peroxidase (LiP) is one of the key enzymes involved in lignin degradation and possesses high redox potential to oxidize non-phenolic structures and phenolic compounds in lignin. However, the production of LiP is mainly from white-rot fungi at small scales. It is critical to discover new LiP from other microorganisms and produce LiP at large scales. This study aims to produce a novel LiP originally from Thermothelomyces thermophiles using a recombinant Aspergillus nidulans strain. The LiP production medium was optimized, and different fed-batch strategies for LiP production were investigated to improve LiP activity, yield, and productivity. Results demonstrated that LiP production was enhanced by using multi-pulse fed-batch fermentation. A maximum LiP activity of 1,645 mU/L with a protein concentration of 0.26 g/L was achieved.
Collapse
Affiliation(s)
- Enshi Liu
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Fernando Segato
- Department of Biotechnology, University of São Paulo, Lorena, SP, Brazil
| | - Mark R Wilkins
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; Industrial Agricultural Products Center, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE 68588, USA.
| |
Collapse
|
4
|
Functional and structural characterization of an α-ʟ-arabinofuranosidase from Thermothielavioides terrestris and its exquisite domain-swapped β-propeller fold crystal packing. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2020; 1868:140533. [DOI: 10.1016/j.bbapap.2020.140533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 07/25/2020] [Accepted: 08/12/2020] [Indexed: 12/24/2022]
|
5
|
Brenelli LB, Figueiredo FL, Damasio A, Franco TT, Rabelo SC. An integrated approach to obtain xylo-oligosaccharides from sugarcane straw: From lab to pilot scale. BIORESOURCE TECHNOLOGY 2020; 313:123637. [PMID: 32535521 DOI: 10.1016/j.biortech.2020.123637] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 05/13/2023]
Abstract
Sugarcane straw (SS) is a widely available agricultural processing feedstock with the potential to produce 2nd generation bioethanol and bioproducts, in addition to the more conventional use for heat and/or electrical power generation. In this study, we investigated the operational parameters to maximize the production of xylo-oligosaccharides (XOS) using mild deacetylation, followed by hydrothermal pretreatment. From the laboratory to the pilot-scale, the optimized two-stage pretreatment promoted 81.5% and 70.5% hemicellulose solubilization and led to XOS yields up to 9.8% and 9.1% (w/w of initial straw), respectively. Moreover, different fungal xylanases were also tested to hydrolyze XOS into xylobiose (X2) and xylotriose (X3). GH10 from Aspergillus nidulans performed better than GH11 xylanases and the ratio of the desired products (X2 + X3) increased to 72% due to minimal monomeric sugar formation. Furthermore, a cellulose-rich fraction was obtained, which can be used in other high value-added applications, such as for the production of cello-oligomers.
Collapse
Affiliation(s)
- Lívia B Brenelli
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Giuseppe Máximo Scolfaro, 10.000, Campinas, São Paulo, Brazil; Interdisciplinary Center of Energy Planning, University of Campinas, Cora Coralina, 330, Campinas, São Paulo, Brazil
| | - Fernanda L Figueiredo
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - André Damasio
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Telma T Franco
- Interdisciplinary Center of Energy Planning, University of Campinas, Cora Coralina, 330, Campinas, São Paulo, Brazil
| | - Sarita C Rabelo
- Department of Bioprocess and Biotechnology, College of Agricultural Sciences, São Paulo State University (UNESP), Avenida Universitária, 3780 Altos do Paraíso, São Paulo, Brazil.
| |
Collapse
|
6
|
Abdella A, Segato F, Wilkins MR. Optimization of process parameters and fermentation strategy for xylanase production in a stirred tank reactor using a mutant Aspergillus nidulans strain. ACTA ACUST UNITED AC 2020; 26:e00457. [PMID: 32420050 PMCID: PMC7218019 DOI: 10.1016/j.btre.2020.e00457] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/27/2020] [Accepted: 04/18/2020] [Indexed: 12/02/2022]
Abstract
In batch fermentation, xylanase productivity was 313 U/mL/day. Maximum xylanase productivity was achieved at aeration of 2 vvm and 400 rpm. The optimum kLa for an efficient xylanase production was found to be 38.5 h−1. Repeated batch fermentation increased xylanase productivity to 373 U/mL/day.
The present work studied the optimization of aeration rate, agitation rate and oxygen transfer and the use of various batch fermentation strategies for xylanase production from a recombinant Aspergillus nidulans strain in a 3 L stirred tank reactor. Maximum xylanase production of 1250 U/mL with productivity of 313 U/mL/day was obtained under an aeration rate of 2 vvm and an agitation rate of 400 rpm using batch fermentation. The optimum volumetric oxygen transfer coefficient (kLa) for efficient xylanase production was found to be 38.6 h−1. Fed batch mode and repeated batch fermentation was also performed with kLa was 38.6 h−1. Xylanase enzyme productivity increased to 327 with fed batch fermentation and 373 U/mL/day with repeated batch fermentation. Also, maximum xylanase activity increased to 1410 U/mL with fed batch fermentation and 1572 U/mL with repeated batch fermentation.
Collapse
Affiliation(s)
- Asmaa Abdella
- Department of Industrial Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, PO Box 79, Sadat City, 22857 Egypt
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, 3605 Fair Street, Lincoln, NE, 68583-0726 USA
- Industrial Agricultural Products Center, University of Nebraska-Lincoln, 3605 Fair Street, Lincoln, NE, 68583-0730 USA
| | - Fernando Segato
- Synthetic and Molecular Biology Laboratory, Department of Biotechnology, Lorena School of Engineering, University of São Paulo, Estrada Municipal do Campinho, s/n, Lorena, SP, Brazil
| | - Mark R. Wilkins
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, 3605 Fair Street, Lincoln, NE, 68583-0726 USA
- Industrial Agricultural Products Center, University of Nebraska-Lincoln, 3605 Fair Street, Lincoln, NE, 68583-0730 USA
- Department of Food Science and Technology, 1901 N 21stSt. University of Nebraska-Lincoln, Lincoln, NE, 68588-6205 USA
- Corresponding author at: University of Nebraska-Lincoln, 211 Chase Hall, PO Box 830726, Lincoln, NE, 68583-0726 USA.
| |
Collapse
|
7
|
Velasco J, Oliva B, Mulinari EJ, Quintero LP, da Silva Lima A, Gonçalves AL, Gonçalves TA, Damasio A, Squina FM, Ferreira Milagres AM, Abdella A, Wilkins MR, Segato F. Heterologous expression and functional characterization of a GH10 endoxylanase from Aspergillus fumigatus var. niveus with potential biotechnological application. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2019; 24:e00382. [PMID: 31799141 PMCID: PMC6881608 DOI: 10.1016/j.btre.2019.e00382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 08/26/2019] [Accepted: 09/26/2019] [Indexed: 10/25/2022]
Abstract
Xylanases decrease the xylan content in pretreated biomass releasing it from hemicellulose, thus improving the accessibility of cellulose for cellulases. In this work, an endo-β-1,4-xylanase from Aspergillus fumigatus var. niveus (AFUMN-GH10) was successfully expressed. The structural analysis and biochemical characterization showed this AFUMN-GH10 does not contain a carbohydrate-binding module. The enzyme retained its activity in a pH range from 4.5 to 7.0, with an optimal temperature at 60 °C. AFUMN-GH10 showed the highest activity in beechwood xylan. The mode of action of AFUMN-GH10 was investigated by hydrolysis of APTS-labeled xylohexaose, which resulted in xylotriose and xylobiose as the main products. AFUMN-GH10 released 27% of residual xylan from hydrothermally-pretreated corn stover and 14% of residual xylan from hydrothermally-pretreated sugarcane bagasse. The results showed that environmentally friendly pretreatment followed by enzymatic hydrolysis with AFUMN-GH10 in low concentration is a suitable method to remove part of residual and recalcitrant hemicellulose from biomass.
Collapse
Affiliation(s)
- Josman Velasco
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo, Lorena, SP, Brazil
| | - Bianca Oliva
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo, Lorena, SP, Brazil
| | - Evandro José Mulinari
- Department of Physics and Applied Sciences, São Carlos Institute of Physics, University of São Paulo, São Carlos, SP, Brazil
| | - Leidy Patricia Quintero
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo, Lorena, SP, Brazil
| | - Awana da Silva Lima
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo, Lorena, SP, Brazil
| | - Aline Larissa Gonçalves
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo, Lorena, SP, Brazil
| | - Thiago Augusto Gonçalves
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
- Programa de Processos Tecnológicos e Ambientais, Universidade de Sorocaba, Sorocaba, SP, Brazil
| | - André Damasio
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | - Fabio Marcio Squina
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
- Programa de Processos Tecnológicos e Ambientais, Universidade de Sorocaba, Sorocaba, SP, Brazil
| | | | - Asmaa Abdella
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
- Industrial Agricultural Products Center, University of Nebraska-Lincoln, Lincoln, NE, USA
- Department of Industrial Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Mark R. Wilkins
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
- Industrial Agricultural Products Center, University of Nebraska-Lincoln, Lincoln, NE, USA
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Fernando Segato
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo, Lorena, SP, Brazil
| |
Collapse
|
8
|
Shahryari Z, Fazaelipoor MH, Ghasemi Y, Lennartsson PR, Taherzadeh MJ. Amylase and Xylanase from Edible Fungus Neurospora intermedia: Production and Characterization. Molecules 2019; 24:molecules24040721. [PMID: 30781572 PMCID: PMC6412995 DOI: 10.3390/molecules24040721] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/13/2019] [Accepted: 02/16/2019] [Indexed: 11/16/2022] Open
Abstract
Integrated enzyme production in the biorefinery can significantly reduce the cost of the entire process. The purpose of the present study is to evaluate the production of two hydrolyzing enzymes (amylase and xylanase) by an edible fungus used in the biorefinery, Neurospora intermedia. The enzyme production was explored through submerged fermentation of synthetic media and a wheat-based waste stream (thin stillage and wheat bran). The influence of a nitrogen source on N. intermedia was investigated and a combination of NaNO3 and yeast extract has been identified as the best nitrogen source for extracellular enzyme production. N. intermedia enzymes showed maximum activity at 65 °C and pH around 5. Under these conditions, the maximum velocity of amylase and xylanase for starch and xylan hydrolysis was found to be 3.25 U mL−1 and 14.77 U mL−1, respectively. Cultivation of N. intermedia in thin stillage and wheat bran medium resulted in relatively high amylase (8.86 ± 0.41 U mL−1, 4.68 ± 0.23) and xylanase (5.48 ± 0.21, 2.58 ± 0.07 U mL−1) production, respectively, which makes this fungus promising for enzyme production through a wheat-based biorefinery.
Collapse
Affiliation(s)
- Zohre Shahryari
- Swedish Centre for Resource Recovery, University of Borås, SE-50190 Borås, Sweden.
- Department of Chemical Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman 7618868366, Iran.
| | - Mohammad H Fazaelipoor
- Department of Chemical Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman 7618868366, Iran.
- Department of Chemical and Polymer Engineering, Faculty of Engineering, Yazd University, Yazd 8915818411, Iran.
| | - Younes Ghasemi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz 71345, Iran.
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 7146864685, Iran.
| | - Patrik R Lennartsson
- Swedish Centre for Resource Recovery, University of Borås, SE-50190 Borås, Sweden.
| | | |
Collapse
|
9
|
Affiliation(s)
- R. Rashmi
- Institute of Bioinformatics and Applied Biotechnology, Bengaluru, India
| | - K. R. Siddalingamurthy
- Department of Biochemistry, Jnanabharathi Campus, Bangalore University, Bengaluru, India
| |
Collapse
|
10
|
Thermostability improvement of a Talaromyces leycettanus xylanase by rational protein engineering. Sci Rep 2017; 7:15287. [PMID: 29127292 PMCID: PMC5681632 DOI: 10.1038/s41598-017-12659-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 09/18/2017] [Indexed: 11/19/2022] Open
Abstract
Thermophilic xylanases with high catalytic efficiency are of great interest in the biofuel, food and feed industries. This study identified a GH11 xylanase gene, Tlxyn11B, in Talaromyces leycettanus JCM12802. Recombinant TlXyn11B produced in Pichia pastoris is distinguished by high specific activity (8259 ± 32 U/mg with beechwood xylan as substrate) and excellent pH stability (from 1.0 to 10.5). The beechwood xylan hydrolysates consisted mainly of xylobiose, xylotriose and xylotetraose, thus TlXyn11B could be used for the production of prebiotic xylooligosaccharide. By using the structure-based rational approach, the N-terminal sequence of TlXyn11B was modified for thermostability improvement. Mutants S3F and S3F/D35V/I/Q/M had elevated Tm values of 60.01 to 67.84 °C, with S3F/D35I the greatest. Homology modeling and molecular dynamics (MD) simulation analysis revealed that the substituted F3 and I35 formed a sandwich structure with S45 and T47, which may enhance the overall structure rigidity with lowered RMSD values. This study verifies the efficiency of rational approach in thermostability improvement and provides a xylanase candidate of GH11 with great commercialization potential.
Collapse
|
11
|
Li Q, Sun B, Jia H, Hou J, Yang R, Xiong K, Xu Y, Li X. Engineering a xylanase from Streptomyce rochei L10904 by mutation to improve its catalytic characteristics. Int J Biol Macromol 2017; 101:366-372. [PMID: 28356235 DOI: 10.1016/j.ijbiomac.2017.03.135] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/21/2017] [Accepted: 03/24/2017] [Indexed: 11/18/2022]
Abstract
Protein engineering was performed by N-terminal region replacement and site-directed mutagenesis in the cord of a xylanase (Srxyn) from Streptomyce rochei L10904 to improve its catalytic characteristics. Three mutants SrxynF, SrxynM and SrxynFM displayed 2.1-fold, 3.2-fold and 5.3-fold higher specific activities than that of Srxyn, respectively. Moreover, all of the mutants showed greater substrate affinity and kcat/Km than the native Srxyn. In addition, the enzymes showed improved hydrolysis characteristics, of which the most noteworthy is the enhanced ability of producing xylobiose (X2) and xylotriose (X3) from polymeric substrates. The engineered xylanases have greater potential for applications in oligosaccharide preparation industry.
Collapse
Affiliation(s)
- Qin Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing 100048, China; School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China
| | - Baoguo Sun
- School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China; Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Huiyong Jia
- Department of Biology, Emory University, 1510 Clifton Road, Atlanta, GA 30322, USA
| | - Jie Hou
- School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China
| | - Ran Yang
- School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China
| | - Ke Xiong
- School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China
| | - Youqiang Xu
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing 100048, China; School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China.
| |
Collapse
|
12
|
Extracellular expression of alkali tolerant xylanase from Bacillus subtilis Lucky9 in E. coli and application for xylooligosaccharides production from agro-industrial waste. Int J Biol Macromol 2017; 96:249-256. [DOI: 10.1016/j.ijbiomac.2016.11.032] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 01/11/2023]
|
13
|
Damasio ARDL, Rubio MV, Gonçalves TA, Persinoti GF, Segato F, Prade RA, Contesini FJ, de Souza AP, Buckeridge MS, Squina FM. Xyloglucan breakdown by endo-xyloglucanase family 74 from Aspergillus fumigatus. Appl Microbiol Biotechnol 2016; 101:2893-2903. [PMID: 28013403 DOI: 10.1007/s00253-016-8014-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 11/09/2016] [Accepted: 11/12/2016] [Indexed: 12/30/2022]
Abstract
Xyloglucan is the most abundant hemicellulose in primary walls of spermatophytes except for grasses. Xyloglucan-degrading enzymes are important in lignocellulosic biomass hydrolysis because they remove xyloglucan, which is abundant in monocot-derived biomass. Fungal genomes encode numerous xyloglucanase genes, belonging to at least six glycoside hydrolase (GH) families. GH74 endo-xyloglucanases cleave xyloglucan backbones with unsubstituted glucose at the -1 subsite or prefer xylosyl-substituted residues in the -1 subsite. In this work, 137 GH74-related genes were detected by examining 293 Eurotiomycete genomes and Ascomycete fungi contained one or no GH74 xyloglucanase gene per genome. Another interesting feature is that the triad of tryptophan residues along the catalytic cleft was found to be widely conserved among Ascomycetes. The GH74 from Aspergillus fumigatus (AfXEG74) was chosen as an example to conduct comprehensive biochemical studies to determine the catalytic mechanism. AfXEG74 has no CBM and cleaves the xyloglucan backbone between the unsubstituted glucose and xylose-substituted glucose at specific positions, along the XX motif when linked to regions deprived of galactosyl branches. It resembles an endo-processive activity, which after initial random hydrolysis releases xyloglucan-oligosaccharides as major reaction products. This work provides insights on phylogenetic diversity and catalytic mechanism of GH74 xyloglucanases from Ascomycete fungi.
Collapse
Affiliation(s)
- André Ricardo de Lima Damasio
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP, Brazil.,Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas, Campinas, SP, Brazil
| | - Marcelo Ventura Rubio
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP, Brazil.,Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas, Campinas, SP, Brazil
| | - Thiago Augusto Gonçalves
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP, Brazil.,Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas, Campinas, SP, Brazil
| | - Gabriela Felix Persinoti
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP, Brazil
| | - Fernando Segato
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP, Brazil.,Departamento de Biotecnologia, Escola de Engenharia de Lorena (EEL), Universidade de São Paulo (USP), Lorena, SP, Brazil
| | - Rolf Alexander Prade
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, USA
| | - Fabiano Jares Contesini
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP, Brazil
| | - Amanda Pereira de Souza
- Laboratório de Fisiologia e Ecologia de Plantas (LAFIECO), Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Marcos Silveira Buckeridge
- Laboratório de Fisiologia e Ecologia de Plantas (LAFIECO), Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Fabio Marcio Squina
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP, Brazil.
| |
Collapse
|
14
|
Vitcosque GL, Ribeiro LFC, de Lucas RC, da Silva TM, Ribeiro LF, de Lima Damasio AR, Farinas CS, Gonçalves AZL, Segato F, Buckeridge MS, Jorge JA, Polizeli MDLTM. The functional properties of a xyloglucanase (GH12) of Aspergillus terreus expressed in Aspergillus nidulans may increase performance of biomass degradation. Appl Microbiol Biotechnol 2016; 100:9133-9144. [PMID: 27245677 DOI: 10.1007/s00253-016-7589-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 04/24/2016] [Accepted: 05/04/2016] [Indexed: 11/28/2022]
Abstract
Filamentous fungi are attractive hosts for heterologous protein expression due to their capacity to secrete large amounts of enzymes into the extracellular medium. Xyloglucanases, which specifically hydrolyze xyloglucan, have been recently applied in lignocellulosic biomass degradation and conversion in many other industrial processes. In this context, this work aimed to clone, express, and determine the functional properties of a recombinant xyloglucanase (AtXEG12) from Aspergillus terreus, and also its solid-state (SSF) and submerged (SmF) fermentation in bioreactors. The purified AtXEG12 showed optimum pH and temperature of 5.5 and 65 °C, respectively, demonstrating to be 90 % stable after 24 h of incubation at 50 °C. AtXEG12 activity increased in the presence of 2-mercaptoethanol (65 %) and Zn+2 (45 %), while Cu+2 and Ag+ ions drastically decreased its activity. A substrate assay showed, for the first time for this enzyme's family, xylanase activity. The enzyme exhibited high specificity for tamarind xyloglucan (K M 1.2 mg mL-1) and V max of 17.4 μmol min-1 mg-1 of protein. The capillary zone electrophoresis analysis revealed that AtXEG12 is an endo-xyloglucanase. The heterologous xyloglucanase secretion was greater than the production by wild-type A. terreus cultivated in SmF. On the other hand, AtXEG12 activity reached by SSF was sevenfold higher than values achieved by SmF, showing that the expression of recombinant enzymes can be significantly improved by cultivation under SSF.
Collapse
Affiliation(s)
- Gabriela Leal Vitcosque
- Departamento de Bioquímica e Imunologia, FMRP, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Liliane Fraga Costa Ribeiro
- Departamento de Bioquímica e Imunologia, FMRP, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.,Chemical Biochemical Environmental Engineering Department, University of Maryland, Baltimore County, MD, USA
| | - Rosymar Coutinho de Lucas
- Departamento de Bioquímica e Imunologia, FMRP, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.,Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil
| | - Tony Marcio da Silva
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil.,Instituto de Ciências da Saúde, Agrárias e Humanas do Centro Universitário do Planalto de Araxà (UNIARAXÀ), Araxà, MG, Brazil
| | - Lucas Ferreira Ribeiro
- Departamento de Bioquímica e Imunologia, FMRP, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.,Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - André Ricardo de Lima Damasio
- Departamento de Bioquímica e Biologia Tecidual, Instituto de Biologia, Universidade de Campinas, Campinas, SP, Brazil
| | | | - Aline Zorzetto Lopes Gonçalves
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil
| | - Fernando Segato
- Departamento de Biotecnologia, Escola de Engenharia de Lorena, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | - João Atilio Jorge
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil
| | - Maria de Lourdes T M Polizeli
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil.
| |
Collapse
|
15
|
Lima MS, Damasio ARDL, Crnkovic PM, Pinto MR, da Silva AM, da Silva JCR, Segato F, de Lucas RC, Jorge JA, Polizeli MDLTDM. Co-cultivation of Aspergillus nidulans Recombinant Strains Produces an Enzymatic Cocktail as Alternative to Alkaline Sugarcane Bagasse Pretreatment. Front Microbiol 2016; 7:583. [PMID: 27199917 PMCID: PMC4848300 DOI: 10.3389/fmicb.2016.00583] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/11/2016] [Indexed: 11/13/2022] Open
Abstract
Plant materials represent a strategic energy source because they can give rise to sustainable biofuels through the fermentation of their carbohydrates. A clear example of a plant-derived biofuel resource is the sugar cane bagasse exhibiting 60-80% of fermentable sugars in its composition. However, the current methods of plant bioconversion employ severe and harmful chemical/physical pretreatments raising biofuel cost production and environmental degradation. Replacing these methods with co-cultivated enzymatic cocktails is an alternative. Here we propose a pretreatment for sugarcane bagasse using a multi-enzymatic cocktail from the co-cultivation of four Aspergillus nidulans recombinant strains. The co-cultivation resulted in the simultaneous production of GH51 arabinofuranosidase (AbfA), GH11 endo-1,4-xylanase (XlnA), GH43 endo-1,5-arabinanase (AbnA) and GH12 xyloglucan specific endo-β-1,4-glucanase (XegA). This core set of recombinant enzymes was more efficient than the alternative alkaline method in maintaining the cellulose integrity and exposing this cellulose to the following saccharification process. Thermogravimetric and differential thermal analysis revealed residual byproducts on the alkali pretreated biomass, which were not found in the enzymatic pretreatment. Therefore, the enzymatic pretreatment was residue-free and seemed to be more efficient than the applied alkaline method, which makes it suitable for bioethanol production.
Collapse
Affiliation(s)
- Matheus S Lima
- Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo São Paulo, Brazil
| | - André R de L Damasio
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas São Paulo, Brazil
| | - Paula M Crnkovic
- Department of Mechanical Engineering, University of São Paulo São Paulo, Brazil
| | - Marcelo R Pinto
- Laboratory of Biopathology and Molecular Biology, Uberaba University Uberaba, Brazil
| | | | - Jean C R da Silva
- Federal Institute of Education, Science and Technology of São Paulo São Paulo, Brazil
| | - Fernando Segato
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo São Paulo, Brazil
| | - Rosymar C de Lucas
- Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São PauloSão Paulo, Brazil; Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São PauloSão Paulo, Brazil
| | - João A Jorge
- Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo São Paulo, Brazil
| | - Maria de L T de M Polizeli
- Department of Biology, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo São Paulo, Brazil
| |
Collapse
|
16
|
Gomes E, de Souza AR, Orjuela GL, Da Silva R, de Oliveira TB, Rodrigues A. Applications and Benefits of Thermophilic Microorganisms and Their Enzymes for Industrial Biotechnology. Fungal Biol 2016. [DOI: 10.1007/978-3-319-27951-0_21] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
17
|
Immobilization and stabilization of an endoxylanase from Bacillus subtilis (XynA) for xylooligosaccharides (XOs) production. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.05.032] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
18
|
Abstract
SUMMARY Biomass is constructed of dense recalcitrant polymeric materials: proteins, lignin, and holocellulose, a fraction constituting fibrous cellulose wrapped in hemicellulose-pectin. Bacteria and fungi are abundant in soil and forest floors, actively recycling biomass mainly by extracting sugars from holocellulose degradation. Here we review the genome-wide contents of seven Aspergillus species and unravel hundreds of gene models encoding holocellulose-degrading enzymes. Numerous apparent gene duplications followed functional evolution, grouping similar genes into smaller coherent functional families according to specialized structural features, domain organization, biochemical activity, and genus genome distribution. Aspergilli contain about 37 cellulase gene models, clustered in two mechanistic categories: 27 hydrolyze and 10 oxidize glycosidic bonds. Within the oxidative enzymes, we found two cellobiose dehydrogenases that produce oxygen radicals utilized by eight lytic polysaccharide monooxygenases that oxidize glycosidic linkages, breaking crystalline cellulose chains and making them accessible to hydrolytic enzymes. Among the hydrolases, six cellobiohydrolases with a tunnel-like structural fold embrace single crystalline cellulose chains and cooperate at nonreducing or reducing end termini, splitting off cellobiose. Five endoglucanases group into four structural families and interact randomly and internally with cellulose through an open cleft catalytic domain, and finally, seven extracellular β-glucosidases cleave cellobiose and related oligomers into glucose. Aspergilli contain, on average, 30 hemicellulase and 7 accessory gene models, distributed among 9 distinct functional categories: the backbone-attacking enzymes xylanase, mannosidase, arabinase, and xyloglucanase, the short-side-chain-removing enzymes xylan α-1,2-glucuronidase, arabinofuranosidase, and xylosidase, and the accessory enzymes acetyl xylan and feruloyl esterases.
Collapse
|
19
|
Ang SK, Yahya A, Abd Aziz S, Md Salleh M. Isolation, screening, and identification of potential cellulolytic and xylanolytic producers for biodegradation of untreated oil palm trunk and its application in saccharification of lemongrass leaves. Prep Biochem Biotechnol 2015; 45:279-305. [PMID: 24960316 DOI: 10.1080/10826068.2014.923443] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This study presents the isolation and screening of fungi with excellent ability to degrade untreated oil palm trunk (OPT) in a solid-state fermentation system (SSF). Qualitative assay of cellulases and xylanase indicates notable secretion of both enzymes by 12 fungal strains from a laboratory collection and 5 strains isolated from a contaminated wooden board. High production of these enzymes was subsequently quantified in OPT in SSF. Aspergillus fumigates SK1 isolated from cow dung gives the highest xylanolytic activity (648.448 U g(-1)), generally high cellulolytic activities (CMCase: 48.006, FPase: 6.860, beta-glucosidase: 16.328 U g(-1)) and moderate lignin peroxidase activity (4.820 U/g), and highest xylanolytic activity. The xylanase encoding gene of Aspergillus fumigates SK1 was screened using polymerase chain reaction by a pair of degenerate primers. Through multiple alignment of the SK1 strain's xylanase nucleotide sequences with other published xylanases, it was confirmed that the gene belonged to the xylanase glycoside hydrolase family 11 (GH11) with a protein size of 24.49 kD. Saccharification of lemongrass leaves using crude cellulases and xylanase gives the maximum reducing sugars production of 6.84 g/L with glucose as the major end product and traces of phenylpropanic compounds (vanillic acid, p-coumaric acid, and ferulic acid).
Collapse
Affiliation(s)
- S K Ang
- a Faculty of Biosciences and Medical Engineering (FBME) , Universiti Teknologi Malaysia , Skudai , Johor , Malaysia
| | | | | | | |
Collapse
|
20
|
Ribeiro LFC, De Lucas RC, Vitcosque GL, Ribeiro LF, Ward RJ, Rubio MV, Damásio ARL, Squina FM, Gregory RC, Walton PH, Jorge JA, Prade RA, Buckeridge MS, Polizeli MDLTM. A novel thermostable xylanase GH10 from Malbranchea pulchella expressed in Aspergillus nidulans with potential applications in biotechnology. BIOTECHNOLOGY FOR BIOFUELS 2014; 7:115. [PMID: 25788980 PMCID: PMC4364333 DOI: 10.1186/1754-6834-7-115] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 07/15/2014] [Indexed: 05/23/2023]
Abstract
BACKGROUND The search for novel thermostable xylanases for industrial use has intensified in recent years, and thermophilic fungi are a promising source of useful enzymes. The present work reports the heterologous expression and biochemical characterization of a novel thermostable xylanase (GH10) from the thermophilic fungus Malbranchea pulchella, the influence of glycosylation on its stability, and a potential application in sugarcane bagasse hydrolysis. RESULTS Xylanase MpXyn10A was overexpressed in Aspergillus nidulans and was active against birchwood xylan, presenting an optimum activity at pH 5.8 and 80°C. MpXyn10A was 16% glycosylated and thermostable, preserving 85% activity after 24 hours at 65°C, and deglycosylation did not affect thermostability. Circular dichroism confirmed the high alpha-helical content consistent with the canonical GH10 family (β/α)8 barrel fold observed in molecular modeling. Primary structure analysis revealed the existence of eight cysteine residues which could be involved in four disulfide bonds, and this could explain the high thermostability of this enzyme even in the deglycosylated form. MpXyn10A showed promising results in biomass degradation, increasing the amount of reducing sugars in bagasse in natura and in three pretreated sugarcane bagasses. CONCLUSIONS MpXyn10A was successfully secreted in Aspergillus nidulans, and a potential use for sugarcane bagasse biomass degradation was demonstrated.
Collapse
Affiliation(s)
- Liliane FC Ribeiro
- />Immunology and Biochemistry Department of Faculdade de Medicina de Ribeirão Preto - USP, Ribeirão Preto, SP Brazil
| | - Rosymar C De Lucas
- />Immunology and Biochemistry Department of Faculdade de Medicina de Ribeirão Preto - USP, Ribeirão Preto, SP Brazil
| | - Gabriela L Vitcosque
- />Immunology and Biochemistry Department of Faculdade de Medicina de Ribeirão Preto - USP, Ribeirão Preto, SP Brazil
| | - Lucas F Ribeiro
- />Immunology and Biochemistry Department of Faculdade de Medicina de Ribeirão Preto - USP, Ribeirão Preto, SP Brazil
| | - Richard J Ward
- />Chemistry Department of Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto - USP, Ribeirão Preto, SP Brazil
- />Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Campinas, SP Brazil
| | - Marcelo V Rubio
- />Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Campinas, SP Brazil
| | - Andre RL Damásio
- />Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Campinas, SP Brazil
| | - Fabio M Squina
- />Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Campinas, SP Brazil
| | | | - Paul H Walton
- />Department of Chemistry, The University of York, York, UK
| | - João A Jorge
- />Biology Department of Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto - USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14040-901 Brazil
| | - Rolf A Prade
- />Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK USA
| | | | - Maria de Lourdes TM Polizeli
- />Biology Department of Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto - USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14040-901 Brazil
| |
Collapse
|
21
|
Biochemical characterization of an endoxylanase from Pseudozyma brasiliensis sp. nov. strain GHG001 isolated from the intestinal tract of Chrysomelidae larvae associated to sugarcane roots. Process Biochem 2014. [DOI: 10.1016/j.procbio.2013.10.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
22
|
Continuous production of xylooligosaccharides in a packed bed reactor with immobilized–stabilized biocatalysts of xylanase from Aspergillus versicolor. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.09.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
23
|
Damasio ARDL, Pessela BC, da Silva TM, Guimaraes LHS, Jorge JA, Guisan JM, Polizeli MDLTM. Co-immobilization of fungal endo-xylanase and -L-arabinofuranosidase in glyoxyl agarose for improved hydrolysis of arabinoxylan. J Biochem 2013; 154:275-80. [DOI: 10.1093/jb/mvt053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
24
|
|
25
|
Damásio ARL, Braga CMP, Brenelli LB, Citadini AP, Mandelli F, Cota J, de Almeida RF, Salvador VH, Paixao DAA, Segato F, Mercadante AZ, de Oliveira Neto M, do Santos WD, Squina FM. Biomass-to-bio-products application of feruloyl esterase from Aspergillus clavatus. Appl Microbiol Biotechnol 2012; 97:6759-67. [PMID: 23229566 DOI: 10.1007/s00253-012-4548-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2012] [Revised: 10/22/2012] [Accepted: 10/23/2012] [Indexed: 11/28/2022]
Abstract
The structural polysaccharides contained in plant cell walls have been pointed to as a promising renewable alternative to petroleum and natural gas. Ferulic acid is a ubiquitous component of plant polysaccharides, which is found in either monomeric or dimeric forms and is covalently linked to arabinosyl residues. Ferulic acid has several commercial applications in food and pharmaceutical industries. The study herein introduces a novel feruloyl esterase from Aspergillus clavatus (AcFAE). Along with a comprehensive functional and biophysical characterization, the low-resolution structure of this enzyme was also determined by small-angle X-ray scattering. In addition, we described the production of phenolic compounds with antioxidant capacity from wheat arabinoxylan and sugarcane bagasse using AcFAE. The ability to specifically cleave ester linkages in hemicellulose is useful in several biotechnological applications, including improved accessibility to lignocellulosic enzymes for biofuel production.
Collapse
Affiliation(s)
- André R L Damásio
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Rua Giuseppe Máximo Scolfaro, no. 10.000, Caixa, Postal 6170 13083-970, Campinas, São Paulo, Brazil
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Fu G, Wang Y, Wang D, Zhou C. Cloning, Expression, and Characterization of an GHF 11 Xylanase from Aspergillus niger XZ-3S. Indian J Microbiol 2012; 52:682-8. [PMID: 24293731 DOI: 10.1007/s12088-012-0314-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 09/26/2012] [Indexed: 11/28/2022] Open
Abstract
A xylanase gene (xynZF-2) from the Aspergillus niger XZ-3S was cloned and expressed in Escherichia coli. The coding region of the gene was separated by only one intron with the 68 bp in length. It encoded 225 amino acid residues of a protein with a calculated molecular weight of 24.04 kDa plus a signal peptide of 18 amino acids. The amino acid sequence of the xynZF-2 gene had a high similarity with those of family 11 of glycosyl hydrolases reported from other microorganisms. The mature peptide encoding cDNA was subcloned into pET-28a(+) expression vector. The resultant recombinant plasmid pET-28a-xynZF-2 was transformed into E. coli BL21(DE3), and finally the recombinant strain BL21/xynZF-2 was obtained. A maximum activity of 42.33 U/mg was gained from cellular of E. coli BL21/xynZF-2 induced by IPTG. The optimum temperature and pH for recombinant enzyme which has a good stability in alkaline conditions were 40 °C and 5.0, respectively. Fe(3+) had an active effect on the enzyme obviously.
Collapse
Affiliation(s)
- Guanhua Fu
- Department of Life Science and Technology, Xinxiang Medical University, 601 Jinsui Road, Xinxiang, 453003 People's Republic of China
| | | | | | | |
Collapse
|
27
|
Gonçalves TA, Damásio ARL, Segato F, Alvarez TM, Bragatto J, Brenelli LB, Citadini APS, Murakami MT, Ruller R, Paes Leme AF, Prade RA, Squina FM. Functional characterization and synergic action of fungal xylanase and arabinofuranosidase for production of xylooligosaccharides. BIORESOURCE TECHNOLOGY 2012; 119:293-299. [PMID: 22750495 DOI: 10.1016/j.biortech.2012.05.062] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 05/10/2012] [Accepted: 05/11/2012] [Indexed: 06/01/2023]
Abstract
Plant cell wall degrading enzymes are key technological components in biomass bioconversion platforms for lignocellulosic materials transformation. Cost effective production of enzymes and identification of efficient degradation routes are two economic bottlenecks that currently limit the use of renewable feedstocks through an environmental friendly pathway. The present study describes the hypersecretion of an endo-xylanase (GH11) and an arabinofuranosidase (GH54) by a fungal expression system with potential biotechnological application, along with comprehensive characterization of both enzymes, including spectrometric analysis of thermal denaturation, biochemical characterization and mode of action description. The synergistic effect of these enzymes on natural substrates such as sugarcane bagasse, demonstrated the biotechnological potential of using GH11 and GH54 for production of probiotic xylooligosaccharides from plant biomass. Our findings shed light on enzymatic mechanisms for xylooligosaccharide production, as well as provide basis for further studies for the development of novel enzymatic routes for use in biomass-to-bioethanol applications.
Collapse
Affiliation(s)
- T A Gonçalves
- Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP, Brazil
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Zhang F, Chen JJ, Ren WZ, Lin LB, Zhou Y, Zhi XY, Tang SK, Li WJ. Cloning, expression, and characterization of an alkaline thermostable GH11 xylanase from Thermobifida halotolerans YIM 90462T. ACTA ACUST UNITED AC 2012; 39:1109-16. [DOI: 10.1007/s10295-012-1119-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 03/08/2012] [Indexed: 11/24/2022]
Abstract
Abstract
A xylanase gene (thxyn11A) from the Thermobifida halotolerans strain YIM 90462T was cloned and expressed in Escherichia coli. The open reading frame (ORF) of thxyn11A has 1,008 bp encoding a mature xylanase with a high degree of similarity (80 %) to the xylanase from Nocardiopsis dassonvillei subsp. dassonvillei DSM 43111. This enzyme (Thxyn11A) also possesses a glycosyl hydrolases family 11 (GH11) domain and a high isoelectric point (pI = 9.1). However, Thxyn11A varies from most GH11 xylanases, due to its large molecular mass (34 kDa). Recombinant Thxyn11A demonstrated a strong pH and temperature tolerance with a maximum activity at pH 9.0 and 70 °C. Xylotriose, the end-product of xylan hydrolysis by Thxyn11A, serves as a catalyst for hemicellulose pretreatment in industrial applications and can also function as a food source or supplement for enterobacteria. Due to its attractive biochemical properties, Thxyn11A may have potential value in many commercial applications.
Collapse
Affiliation(s)
- Feng Zhang
- grid.440773.3 Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology Yunnan University 650091 Kunming People’s Republic of China
| | - Jiu-Jiu Chen
- grid.440773.3 Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology Yunnan University 650091 Kunming People’s Republic of China
- grid.218292.2 000000008571108X Biotechnology Research Center of Kunming University of Science and Technology 650224 Kunming People’s Republic of China
| | - Wan-Zeng Ren
- grid.440773.3 Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology Yunnan University 650091 Kunming People’s Republic of China
| | - Lian-Bing Lin
- grid.218292.2 000000008571108X Biotechnology Research Center of Kunming University of Science and Technology 650224 Kunming People’s Republic of China
| | - Yu Zhou
- grid.410744.2 0000000098833553 Institute of Quality and Standard for Agro-products Zhejiang Academy of Agricultural Sciences 310021 Hangzhou People’s Republic of China
| | - Xiao-Yang Zhi
- grid.440773.3 Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology Yunnan University 650091 Kunming People’s Republic of China
| | - Shu-Kun Tang
- grid.440773.3 Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology Yunnan University 650091 Kunming People’s Republic of China
| | - Wen-Jun Li
- grid.440773.3 Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology Yunnan University 650091 Kunming People’s Republic of China
- grid.9227.e 0000000119573309 Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences 830011 Ürűmqi People’s Republic of China
| |
Collapse
|
29
|
Segato F, Damásio ARL, Gonçalves TA, de Lucas RC, Squina FM, Decker SR, Prade RA. High-yield secretion of multiple client proteins in Aspergillus. Enzyme Microb Technol 2012; 51:100-6. [PMID: 22664194 DOI: 10.1016/j.enzmictec.2012.04.008] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 03/27/2012] [Accepted: 04/24/2012] [Indexed: 10/28/2022]
Abstract
Production of pure and high-yield client proteins is an important technology that addresses the need for industrial applications of enzymes as well as scientific experiments in protein chemistry and crystallization. Fungi are utilized in industrial protein production because of their ability to secrete large quantities of proteins. In this study, we engineered a high-expression-secretion vector, pEXPYR that directs proteins towards the extracellular medium in two Aspergillii host strains, examine the effect of maltose-induced over-expression and protein secretion as well as time and pH-dependent protein stability in the medium. We describe five client proteins representing a core set of hemicellulose degrading enzymes that accumulated up to 50-100 mg/L of protein. Using a recyclable genetic marker that allows serial insertion of multiple genes, simultaneous hyper-secretion of three client proteins in a single host strain was accomplished.
Collapse
Affiliation(s)
- Fernando Segato
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK 74078, USA
| | | | | | | | | | | | | |
Collapse
|
30
|
Andrioli WJ, Damásio ARL, Silva TM, da Silva VB, Maller A, Nanayakkara NPD, Silva CHTP, Polizeli MLTM, Bastos JK. Endo-xylanase GH11 activation by the fungal metabolite eugenitin. Biotechnol Lett 2012; 34:1487-92. [PMID: 22481300 DOI: 10.1007/s10529-012-0918-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 03/21/2012] [Indexed: 10/28/2022]
Abstract
Eugenitin, a chromone derivative and a metabolite of the endophyte Mycoleptodiscus indicus, at 5 mM activated a recombinant GH11 endo-xylanase by 40 %. The in silico prediction of ligand-binding sites on the three-dimensional structure of the endo-xylanase revealed that eugenitin interacts mainly by a hydrogen bond with a serine residue and a stacking interaction of the heterocyclic aromatic ring system with a tryptophan residue. Eugenitin improved the GH11 endo-xylanase activity on different substrates, modified the optimal pH and temperature activities and slightly affected the kinetic parameters of the enzyme.
Collapse
Affiliation(s)
- Willian J Andrioli
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14040-903, Brazil.
| | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Damásio ARL, Ribeiro LFC, Ribeiro LF, Furtado GP, Segato F, Almeida FBR, Crivellari AC, Buckeridge MS, Souza TACB, Murakami MT, Ward RJ, Prade RA, Polizeli MLTM. Functional characterization and oligomerization of a recombinant xyloglucan-specific endo-β-1,4-glucanase (GH12) from Aspergillus niveus. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2011; 1824:461-7. [PMID: 22230786 DOI: 10.1016/j.bbapap.2011.12.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 12/20/2011] [Accepted: 12/21/2011] [Indexed: 11/16/2022]
Abstract
Xyloglucan is a major structural polysaccharide of the primary (growing) cell wall of higher plants. It consists of a cellulosic backbone (beta-1,4-linked glucosyl residues) that is frequently substituted with side chains. This report describes Aspergillus nidulans strain A773 recombinant secretion of a dimeric xyloglucan-specific endo-β-1,4-glucanohydrolase (XegA) cloned from Aspergillus niveus. The ORF of the A. niveus xegA gene is comprised of 714 nucleotides, and encodes a 238 amino acid protein with a calculated molecular weight of 23.5kDa and isoelectric point of 4.38. The optimal pH and temperature were 6.0 and 60°C, respectively. XegA generated a xyloglucan-oligosaccharides (XGOs) pattern similar to that observed for cellulases from family GH12, i.e., demonstrating that its mode of action includes hydrolysis of the glycosidic linkages between glucosyl residues that are not branched with xylose. In contrast to commercial lichenase, mixed linkage beta-glucan (lichenan) was not digested by XegA, indicating that the enzyme did not cleave glucan β-1,3 or β-1,6 bonds. The far-UV CD spectrum of the purified enzyme indicated a protein rich in β-sheet structures as expected for GH12 xyloglucanases. Thermal unfolding studies displayed two transitions with mid-point temperatures of 51.3°C and 81.3°C respectively, and dynamic light scattering studies indicated that the first transition involves a change in oligomeric state from a dimeric to a monomeric form. Since the enzyme is a predominantly a monomer at 60°C, the enzymatic assays demonstrated that XegA is more active in its monomeric state.
Collapse
Affiliation(s)
- André R L Damásio
- Departamento de Bioquímica e Imunologia, Universidade de São Paulo, Ribeirão Preto, Brazil
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|