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Briganti L, Manzine LR, de Mello Capetti CC, de Araújo EA, de Oliveira Arnoldi Pellegrini V, Guimaraes FEG, de Oliveira Neto M, Polikarpov I. Unravelling biochemical and structural features of Bacillus licheniformis GH5 mannanase using site-directed mutagenesis and high-resolution protein crystallography studies. Int J Biol Macromol 2024; 274:133182. [PMID: 38885857 DOI: 10.1016/j.ijbiomac.2024.133182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 05/20/2024] [Accepted: 06/13/2024] [Indexed: 06/20/2024]
Abstract
Glycoside hydrolase family 5 (GH5) encompasses enzymes with several different activities, including endo-1,4-β-mannosidases. These enzymes are involved in mannan degradation, and have a number of biotechnological applications, such as mannooligosaccharide prebiotics production, stain removal and dyes decolorization, to name a few. Despite the importance of GH5 enzymes, only a few members of subfamily 7 were structurally characterized. In the present work, biochemical and structural characterization of Bacillus licheniformis GH5 mannanase, BlMan5_7 were performed and the enzyme cleavage pattern was analyzed, showing that BlMan5_7 requires at least 5 occupied subsites to perform efficient hydrolysis. Additionally, crystallographic structure at 1.3 Å resolution was determined and mannoheptaose (M7) was docked into the active site to investigate the interactions between substrate and enzyme through molecular dynamic (MD) simulations, revealing the existence of a - 4 subsite, which might explain the generation of mannotetraose (M4) as an enzyme product. Biotechnological application of the enzyme in stain removal was investigated, demonstrating that BlMan5_7 addition to washing solution greatly improves mannan-based stain elimination.
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Affiliation(s)
- Lorenzo Briganti
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400 - Centro, São Carlos, SP 13560-970, Brazil
| | - Livia R Manzine
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400 - Centro, São Carlos, SP 13560-970, Brazil
| | - Caio Cesar de Mello Capetti
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400 - Centro, São Carlos, SP 13560-970, Brazil
| | - Evandro Ares de Araújo
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials, Campinas 13083-970, São Paulo, Brazil
| | | | - Francisco Eduardo Gontijo Guimaraes
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400 - Centro, São Carlos, SP 13560-970, Brazil
| | - Mario de Oliveira Neto
- Departamento de Física e Biofísica, Instituto de Biociências de Botucatu, Universidade Estadual Paulista, Distrito de Rubião Jr. s/n, Botucatu 18618-000, SP, Brazil
| | - Igor Polikarpov
- Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São Carlense 400 - Centro, São Carlos, SP 13560-970, Brazil.
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Sadaqat B, Dar MA, Sha C, Abomohra A, Shao W, Yong YC. Thermophilic β-mannanases from bacteria: production, resources, structural features and bioengineering strategies. World J Microbiol Biotechnol 2024; 40:130. [PMID: 38460032 DOI: 10.1007/s11274-024-03912-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/29/2024] [Indexed: 03/11/2024]
Abstract
β-mannanases are pivotal enzymes that cleave the mannan backbone to release short chain mannooligosaccharides, which have tremendous biotechnological applications including food/feed, prebiotics and biofuel production. Due to the high temperature conditions in many industrial applications, thermophilic mannanases seem to have great potential to overcome the thermal impediments. Thus, structural analysis of thermostable β-mannanases is extremely important, as it could open up new avenues for genetic engineering, and protein engineering of these enzymes with enhanced properties and catalytic efficiencies. Under this scope, the present review provides a state-of-the-art discussion on the thermophilic β-mannanases from bacterial origin, their production, engineering and structural characterization. It covers broad insights into various molecular biology techniques such as gene mutagenesis, heterologous gene expression, and protein engineering, that are employed to improve the catalytic efficiency and thermostability of bacterial mannanases for potential industrial applications. Further, the bottlenecks associated with mannanase production and process optimization are also discussed. Finally, future research related to bioengineering of mannanases with novel protein expression systems for commercial applications are also elaborated.
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Affiliation(s)
- Beenish Sadaqat
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu province, People's Republic of China
- Department of Biochemistry and Structural Biology, Lund University, Box 124, 22100, Lund, Sweden
| | - Mudasir A Dar
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu province, People's Republic of China
| | - Chong Sha
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu province, People's Republic of China
| | - Abdelfatah Abomohra
- Aquatic Ecophysiology and Phycology, Department of Biology, Institute of Plant Science and Microbiology, University of Hamburg, Hamburg, 22609, Germany
| | - Weilan Shao
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu province, People's Republic of China.
| | - Yang-Chun Yong
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu province, People's Republic of China.
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Djelid H, Flahaut S, Oudjama Y, Wauven CV, Kacem Chaouche N. High NaCl concentrations induce the resistance to thermal denaturation of an extremely halotolerant (salt-activated) β-mannanase from Bacillus velezensis H1. World J Microbiol Biotechnol 2023; 39:304. [PMID: 37691038 DOI: 10.1007/s11274-023-03754-6] [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: 07/20/2023] [Accepted: 09/06/2023] [Indexed: 09/12/2023]
Abstract
β-mannanase catalyzes the hydrolysis of mannans β-1,4-mannosidic linkages to produce industrially relevant oligosaccharides. These enzymes have numerous important applications in the detergent, food, and feed industries, particularly those that are resistant to harsh environmental conditions such as salts and heat. While, moderately salt-tolerant β-mannanases are already reported, existence of a high halotolerant β-mannanase is still elusive. This study aims to report the first purification and characterization of ManH1, an extremely halotolerant β-mannanase from the halotolerant B. velezensis strain H1. Electrospray ionization quadrupole time-of-flight mass spectrometry (ESI-Q-TOF-MS) analysis revealed a single major peak with a molecular mass of 37.8 kDa demonstrating its purity. The purified enzyme showed a good thermostability as no activity was lost after a 48 h incubation under optimal conditions of 50 °C and pH 5.5. The enzyme's salt activation nature was revealed when its maximum activity was obtained in the presence of 4 M NaCl, it doubled compared to the no-salt condition. Moreover, NaCl strengthens its resistance to thermal denaturation, as its melting temperature (Tm) increased steadily with increasing NaCl concentrations reaching 75.5 °C in the presence of 2.5 M NaCl. The Km and Vmax values were 5.63 mg/mL and 333.33 µmol/min/mL, respectively, using carob galactomannan (CG) as a substrate. The enzyme showed a significant ability to produce manno-oligosaccharides (MOS) from lignocellulosic biomass releasing 13 mg/mL of reducing sugars from olive mill wastes (OMW) after 24 h incubation. The results revealed that this enzyme may have significant commercial values for agro-waste treatment, and other potential applications.
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Affiliation(s)
- Hadjer Djelid
- Laboratoire de Mycologie, de Biotechnologie et de l'Activité Microbienne (LaMyBAM), Département de Biologie Appliquée, FSNV, Université des Frères Mentouri, Constantine 1, Constantine, 25017, Algeria.
- Laboratoire de microbiologie appliquée, Ecole interfacultaire de Bioingénieurs, Université Libre de Bruxelles, Campus du CERIA, Bât. 4B, 1 avenue Emile Gryson, Brussels, 1070, Belgium.
| | - Sigrid Flahaut
- Laboratoire de microbiologie appliquée, Ecole interfacultaire de Bioingénieurs, Université Libre de Bruxelles, Campus du CERIA, Bât. 4B, 1 avenue Emile Gryson, Brussels, 1070, Belgium
| | | | | | - Noreddine Kacem Chaouche
- Laboratoire de Mycologie, de Biotechnologie et de l'Activité Microbienne (LaMyBAM), Département de Biologie Appliquée, FSNV, Université des Frères Mentouri, Constantine 1, Constantine, 25017, Algeria
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Rana M, Jassal S, Yadav R, Sharma A, Puri N, Mazumder K, Gupta N. Functional β-mannooligosaccharides: Sources, enzymatic production and application as prebiotics. Crit Rev Food Sci Nutr 2023:1-18. [PMID: 37335120 DOI: 10.1080/10408398.2023.2222165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
One of the emerging non-digestible oligosaccharide prebiotics is β-mannooligosaccharides (β-MOS). β-MOS are β-mannan derived oligosaccharides, they are selectively fermented by gut microbiota, promoting the growth of beneficial microorganisms (probiotics), whereas the growth of enteric pathogens remains unaffected or gets inhibited in their presence, along with production of metabolites such as short-chain fatty acids. β-MOS also exhibit several other bioactive properties and health-promoting effects. Production of β-MOS using the enzymes such as β-mannanases is the most effective and eco-friendly approach. For the application of β-MOS on a large scale, their production needs to be standardized using low-cost substrates, efficient enzymes and optimization of the production conditions. Moreover, for their application, detailed in-vivo and clinical studies are required. For this, a thorough information of various studies in this regard is needed. The current review provides a comprehensive account of the enzymatic production of β-MOS along with an evaluation of their prebiotic and other bioactive properties. Their characterization, structural-functional relationship and in-vivo studies have also been summarized. Research gaps and future prospects have also been discussed, which will help in conducting further research for the commercialization of β-MOS as prebiotics, functional food ingredients and therapeutic agents.
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Affiliation(s)
- Monika Rana
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Sunena Jassal
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Richa Yadav
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Anupama Sharma
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Neena Puri
- Department of Industrial Microbiology, Guru Nanak Khalsa College, Yamunanagar, Haryana, India
| | - Koushik Mazumder
- Food & Nutritional Biotechnology, National Agri-Food Biotechnology Institute, Mohali, Punjab, India
| | - Naveen Gupta
- Department of Microbiology, Panjab University, Chandigarh, India
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Zheng F, Basit A, Wang J, Zhuang H, Chen J, Zhang J. Biochemical analyses of a novel acidophilic GH5 β-mannanase from Trichoderma asperellum ND-1 and its application in mannooligosaccharides production from galactomannans. Front Microbiol 2023; 14:1191553. [PMID: 37362936 PMCID: PMC10288326 DOI: 10.3389/fmicb.2023.1191553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 05/09/2023] [Indexed: 06/28/2023] Open
Abstract
In this study, an acidophilic GH5 β-mannanase (TaMan5) from Trichoderma asperellum ND-1 was efficiently expressed in Pichia pastoris (a 2.0-fold increase, 67.5 ± 1.95 U/mL). TaMan5 displayed the highest specificity toward locust bean gum (Km = 1.34 mg/mL, Vmax = 749.14 μmol/min/mg) at pH 4.0 and 65°C. Furthermore, TaMan5 displayed remarkable tolerance to acidic environments, retaining over 80% of its original activity at pH 3.0-5.0. The activity of TaMan5 was remarkably decreased by Cu2+, Mn2+, and SDS, while Fe2+/Fe3+ improved the enzyme activity. A thin-layer chromatography (TLC) analysis of the action model showed that TaMan5 could rapidly degrade mannan/MOS into mannobiose without mannose via hydrolysis action as well as transglycosylation. Site-directed mutagenesis results suggested that Glu205, Glu313, and Asp357 of TaMan5 are crucial catalytic residues, with Asp152 playing an auxiliary function. Additionally, TaMan5 and commercial α-galactosidase displayed a remarkable synergistic effect on the degradation of galactomannans. This study provided a novel β-mannanase with ideal characteristics and can be considered a potential candidate for the production of bioactive polysaccharide mannobiose.
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Affiliation(s)
- Fengzhen Zheng
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, China
| | - Abdul Basit
- Department of Microbiology, University of Jhang, Jhang, Pakistan
| | - Jiaqiang Wang
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, China
| | - Huan Zhuang
- Department of ENT and Head and Neck Surgery, The Children's Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jun Chen
- Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou, China
| | - Jianfen Zhang
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, China
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β-Mannanase BoMan26B from Bacteroides ovatus produces mannan-oligosaccharides with prebiotic potential from galactomannan and softwood β-mannans. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.112215] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Pongsapipatana N, Charoenwattanasatien R, Pramanpol N, Nguyen TH, Haltrich D, Nitisinprasert S, Keawsompong S. Crystallization, structural characterization and kinetic analysis of a GH26 β-mannanase from Klebsiella oxytoca KUB-CW2-3. ACTA CRYSTALLOGRAPHICA SECTION D-STRUCTURAL BIOLOGY 2021; 77:1425-1436. [PMID: 34726170 DOI: 10.1107/s2059798321009992] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 09/25/2021] [Indexed: 11/10/2022]
Abstract
β-Mannanase (EC 3.2.1.78) is an enzyme that cleaves within the backbone of mannan-based polysaccharides at β-1,4-linked D-mannose residues, resulting in the formation of mannooligosaccharides (MOS), which are potential prebiotics. The GH26 β-mannanase KMAN from Klebsiella oxytoca KUB-CW2-3 shares 49-72% amino-acid sequence similarity with β-mannanases from other sources. The crystal structure of KMAN at a resolution of 2.57 Å revealed an open cleft-shaped active site. The enzyme structure is based on a (β/α)8-barrel architecture, which is a typical characteristic of clan A glycoside hydrolase enzymes. The putative catalytic residues Glu183 and Glu282 are located on the loop connected to β-strand 4 and at the end of β-strand 7, respectively. KMAN digests linear MOS with a degree of polymerization (DP) of between 4 and 6, with high catalytic efficiency (kcat/Km) towards DP6 (2571.26 min-1 mM-1). The predominant end products from the hydrolysis of locust bean gum, konjac glucomannan and linear MOS are mannobiose and mannotriose. It was observed that KMAN requires at least four binding sites for the binding of substrate molecules and hydrolysis. Molecular docking of mannotriose and galactosyl-mannotetraose to KMAN confirmed its mode of action, which prefers linear substrates to branched substrates.
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Affiliation(s)
- Nawapan Pongsapipatana
- Specialized Research Unit: Prebiotics and Probiotics for Health, Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand
| | - Ratana Charoenwattanasatien
- Synchrotron Light Research Institute (Public Organization), 111 University Avenue, Nakhon Ratchasima 30000, Thailand
| | - Nuttawan Pramanpol
- National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Phahonyothin Road, Klong Nueng, Klong Luang, Pathumthani 12120, Thailand
| | - Thu Ha Nguyen
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU - University of Natural Resources and Life Sciences, Vienna, Austria
| | - Dietmar Haltrich
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU - University of Natural Resources and Life Sciences, Vienna, Austria
| | - Sunee Nitisinprasert
- Specialized Research Unit: Prebiotics and Probiotics for Health, Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand
| | - Suttipun Keawsompong
- Specialized Research Unit: Prebiotics and Probiotics for Health, Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand
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Hlalukana N, Magengelele M, Malgas S, Pletschke BI. Enzymatic Conversion of Mannan-Rich Plant Waste Biomass into Prebiotic Mannooligosaccharides. Foods 2021; 10:2010. [PMID: 34574120 PMCID: PMC8468410 DOI: 10.3390/foods10092010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/20/2021] [Accepted: 08/22/2021] [Indexed: 01/16/2023] Open
Abstract
A growing demand in novel food products for well-being and preventative medicine has attracted global attention on nutraceutical prebiotics. Various plant agro-processes produce large amounts of residual biomass considered "wastes", which can potentially be used to produce nutraceutical prebiotics, such as manno-oligosaccharides (MOS). MOS can be produced from the degradation of mannan. Mannan has a main backbone consisting of β-1,4-linked mannose residues (which may be interspersed by glucose residues) with galactose substituents. Endo-β-1,4-mannanases cleave the mannan backbone at cleavage sites determined by the substitution pattern and thus give rise to different MOS products. These MOS products serve as prebiotics to stimulate various types of intestinal bacteria and cause them to produce fermentation products in different parts of the gastrointestinal tract which benefit the host. This article reviews recent advances in understanding the exploitation of plant residual biomass via the enzymatic production and characterization of MOS, and the influence of MOS on beneficial gut microbiota and their biological effects (i.e., immune modulation and lipidemic effects) as observed on human and animal health.
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Affiliation(s)
| | | | - Samkelo Malgas
- Enzyme Science Programme (ESP), Department of Biochemistry and Microbiology, Rhodes University, Makhanda 6140, Eastern Cape, South Africa; (N.H.); (M.M.); (B.I.P.)
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Sadaqat B, Sha C, Rupani PF, Wang H, Zuo W, Shao W. Man/Cel5B, a Bifunctional Enzyme Having the Highest Mannanase Activity in the Hyperthermic Environment. Front Bioeng Biotechnol 2021; 9:637649. [PMID: 33796509 PMCID: PMC8007966 DOI: 10.3389/fbioe.2021.637649] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 02/25/2021] [Indexed: 01/07/2023] Open
Abstract
Thermotoga maritima (Tma) contains genes encoding various hyperthermophilic enzymes with great potential for industrial applications. The gene TM1752 in Tma genome has been annotated as cellulase gene encoding protein Cel5B. In this work, the gene TM1752 was cloned and expressed in Escherichia coli, and the recombinant enzyme was purified and characterized. Interestingly, the purified enzyme exhibited specific activities of 416 and 215 U/mg on substrates galactomannan and carboxy methyl cellulose, which is the highest among thermophilic mannanases. However, the putative enzyme did not show sequence homology with any of the previously reported mannanases; therefore, the enzyme Cel5B was identified as bifunctional mannanase and cellulase and renamed as Man/Cel5B. Man/Cel5B exhibited maximum activity at 85°C and pH 5.5. This enzyme retained more than 50% activity after 5 h of incubation at 85°C, and retained up to 80% activity after incubated for 1 h at pH 5–8. The Km and Vmax of Man/Cel5B were observed to be 4.5 mg/mL galactomannan and 769 U/mg, respectively. Thin layer chromatography depicted that locust bean gum could be efficiently degraded to mannobiose, mannotriose, and mannooligosaccharides by Man/Cel5B. These characteristics suggest that Man/Cel5B has attractive applications for future food, feed, and biofuel industries.
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Affiliation(s)
- Beenish Sadaqat
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Chong Sha
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Parveen Fatemeh Rupani
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Hongcheng Wang
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Wanbing Zuo
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
| | - Weilan Shao
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
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Xu W, Han M, Zhang W, Zhang F, Lei F, Wang K, Jiang J. Production of manno-oligosaccharide from Gleditsia microphylla galactomannan using acetic acid and ferrous chloride. Food Chem 2021; 346:128844. [PMID: 33418412 DOI: 10.1016/j.foodchem.2020.128844] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 11/09/2020] [Accepted: 12/05/2020] [Indexed: 01/10/2023]
Abstract
A novel and efficient method for manno-oligosaccharides (MOS) production has been proposed by utilizing Gleditsia microphylla galactomannan as the starting material. This co-operative hydrolysis using ferrous chloride (Fe2+) and acetic acid (HAc) effectively improved the MOS yield and meanwhile decreased the amount of monosaccharide and the 5-hydroxymethyl-furfural (HMF). The highest yields under the optimum conditions were 46.7% by HAc hydrolysis (5 M HAc at 130 °C for 120 min); 37.3% by Fe2+ hydrolysis (0.1 M Fe2+ at 150 °C for 120 min); and 51.4% by co-operative hydrolysis (2 M HAc, 0.05 M Fe2+ at 160 °C for 10 min). From the changes in the value of M/G (mannose/galactose) ratios, it was deduced that Fe2+ predominantly cleaves the main chain, and HAc assists in the breakage of the side chain, thus resulting in the high-efficient co-operative hydrolysis for the production of MOS.
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Affiliation(s)
- Wei Xu
- Beijing Forestry University, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing 100083, China
| | - Minghui Han
- Beijing Forestry University, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing 100083, China
| | - Weiwei Zhang
- Beijing Forestry University, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing 100083, China
| | - Fenglun Zhang
- Nanjing Institute for the Comprehensive Utilization of Wild Plants, Nanjing 210042, China
| | - Fuhou Lei
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China
| | - Kun Wang
- Beijing Forestry University, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing 100083, China
| | - Jianxin Jiang
- Beijing Forestry University, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing 100083, China.
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Zhang R, Li XY, Cen XL, Gao QH, Zhang M, Li KY, Wu Q, Mu YL, Tang XH, Zhou JP, Huang ZX. Enzymatic preparation of manno-oligosaccharides from locust bean gum and palm kernel cake, and investigations into its prebiotic activity. ELECTRON J BIOTECHN 2021. [DOI: 10.1016/j.ejbt.2020.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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12
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Chen X, Wang X, Liu Y, Zhang R, Zhang L, Zhan R, Wang S, Wang K. Biochemical analyses of a novel thermostable GH5 endo β-1,4-mannanase with minor β-1,4-glucosidic cleavage activity from Bacillus sp. KW1 and its synergism with a commercial α-galactosidase on galactomannan hydrolysis. Int J Biol Macromol 2020; 166:778-788. [PMID: 33144255 DOI: 10.1016/j.ijbiomac.2020.10.235] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 10/07/2020] [Accepted: 10/30/2020] [Indexed: 11/17/2022]
Abstract
A novel GH5 endo-1,4-β-mannanase (BaMan5A) was identified from Bacillus sp. KW1, it shares the highest sequence identity (86%) with another characterized Bacillus endo-1,4-β-mannanase. The recombinant BaMan5A displayed maximum activity at pH 7.0 and 70 °C, it was stable at a broad pH range (pH 3.5-11.0) after 12-h incubation at 25 °C, and exhibited good thermostability, retaining about 100% and 85% activity after incubating at 60 °C for 12 h and 65 °C for 8 h, respectively. The results of polysaccharide hydrolysis revealed that the enzyme can only hydrolyze mannan substrates, including carob galactomannan, konjac glucomannan, 1,4-β-D-mannan, locust bean gum, and guar gum, yielding mannose, mannobiose, mannotriose, and some other oligosaccharides. The best substrate was carob galactomannan, the corresponding specific activity and Km value were 10,886 μmol/min/μmol and 3.31 mg/mL, respectively. Interestingly, BaMan5A was capable to hydrolyze both manno-oligosaccharides and cello-oligosaccharides, including mannotetraose, mannopentaose, mannohexaose, cellopentaose and cellohexaose. Furthermore, BaMan5A acted synergistically with a commercial α-galactosidase (CbAgal) on galactomannan depolymerization, a best synergy degree of 1.58 was achieved after optimizing enzyme ratios. This study not only expands the diversity of Bacillus GH5 β-mannanase, but also discloses the potential of BaMan5A in industrial application.
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Affiliation(s)
- Xi Chen
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, PR China; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, PR China; Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, PR China
| | - Xinhai Wang
- Department of General Surgery, Huashan Hospital of Fudan University, Shanghai, PR China
| | - Yun Liu
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, PR China; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, PR China; Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, PR China
| | - Ruiqin Zhang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, PR China; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, PR China; Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, PR China
| | - Liang Zhang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, PR China; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, PR China; Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, PR China
| | - Ruoting Zhan
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, PR China; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, PR China; Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, PR China
| | - Sidi Wang
- College of Fundamental Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Kui Wang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou, PR China; Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education, Guangzhou, PR China; Joint Laboratory of National Engineering Research Center for the Pharmaceutics of Traditional Chinese Medicines, PR China.
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13
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Kaira GS, Kapoor M. Molecular advancements on over-expression, stability and catalytic aspects of endo-β-mannanases. Crit Rev Biotechnol 2020; 41:1-15. [PMID: 33032458 DOI: 10.1080/07388551.2020.1825320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The hydrolysis of mannans by endo-β-mannanases continues to gather significance as exemplified by its commercial applications in food, feed, and a rekindled interest in biorefineries. The present review provides a comprehensive account of fundamental research and fascinating insights in the field of endo-β-mannanase engineering in order to improve over-expression and to decipher molecular determinants governing activity-stability during harsh conditions, substrate recognition, polysaccharide specificity, endo/exo mode of action and multi-functional activities in the modular polypeptide. In-depth analysis of the available literature has also been made on rational and directed evolution approaches, which have translated native endo-β-mannanases into superior biocatalysts for satisfying industrial requirements.
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Affiliation(s)
- Gaurav Singh Kaira
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Mukesh Kapoor
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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14
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Zhao D, Zhang X, Wang Y, Na J, Ping W, Ge J. Purification, biochemical and secondary structural characterisation of β-mannanase from Lactobacillus casei HDS-01 and juice clarification potential. Int J Biol Macromol 2020; 154:826-834. [DOI: 10.1016/j.ijbiomac.2020.03.157] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/16/2020] [Accepted: 03/16/2020] [Indexed: 10/24/2022]
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15
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Cann I, Pereira GV, Abdel-Hamid AM, Kim H, Wefers D, Kayang BB, Kanai T, Sato T, Bernardi RC, Atomi H, Mackie RI. Thermophilic Degradation of Hemicellulose, a Critical Feedstock in the Production of Bioenergy and Other Value-Added Products. Appl Environ Microbiol 2020; 86:e02296-19. [PMID: 31980431 PMCID: PMC7082577 DOI: 10.1128/aem.02296-19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Renewable fuels have gained importance as the world moves toward diversifying its energy portfolio. A critical step in the biomass-to-bioenergy initiative is deconstruction of plant cell wall polysaccharides to their unit sugars for subsequent fermentation to fuels. To acquire carbon and energy for their metabolic processes, diverse microorganisms have evolved genes encoding enzymes that depolymerize polysaccharides to their carbon/energy-rich building blocks. The microbial enzymes mostly target the energy present in cellulose, hemicellulose, and pectin, three major forms of energy storage in plants. In the effort to develop bioenergy as an alternative to fossil fuel, a common strategy is to harness microbial enzymes to hydrolyze cellulose to glucose for fermentation to fuels. However, the conversion of plant biomass to renewable fuels will require both cellulose and hemicellulose, the two largest components of the plant cell wall, as feedstock to improve economic feasibility. Here, we explore the enzymes and strategies evolved by two well-studied bacteria to depolymerize the hemicelluloses xylan/arabinoxylan and mannan. The sets of enzymes, in addition to their applications in biofuels and value-added chemical production, have utility in animal feed enzymes, a rapidly developing industry with potential to minimize adverse impacts of animal agriculture on the environment.
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Affiliation(s)
- Isaac Cann
- Department of Animal Science, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Energy Biosciences Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto, Japan
| | - Gabriel V Pereira
- Department of Animal Science, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Energy Biosciences Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Ahmed M Abdel-Hamid
- Energy Biosciences Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Heejin Kim
- Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Daniel Wefers
- Karlsruhe Institute of Technology, Institute of Applied Biosciences, Department of Food Chemistry and Phytochemistry, Karlsruhe, Germany
| | - Boniface B Kayang
- Department of Animal Science, School of Agriculture, University of Ghana, Legon, Ghana
| | - Tamotsu Kanai
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto, Japan
| | - Takaaki Sato
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto, Japan
- JST, CREST, Tokyo, Japan
| | - Rafael C Bernardi
- NIH Center for Macromolecular Modeling and Bioinformatics, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Haruyuki Atomi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto, Japan
- JST, CREST, Tokyo, Japan
| | - Roderick I Mackie
- Department of Animal Science, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Energy Biosciences Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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16
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Zhu M, Zhang L, Yang F, Cha Y, Li S, Zhuo M, Huang S, Li J. A Recombinant β-Mannanase from Thermoanaerobacterium aotearoense SCUT27: Biochemical Characterization and Its Thermostability Improvement. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:818-825. [PMID: 31845578 DOI: 10.1021/acs.jafc.9b06246] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
β-Mannanase was expressed in Thermoanaerobacterium aotearoense SCUT27 induced by locust bean gum (LBG). The open reading frame encoding a GH26 β-mannanase was identified and encoded a preprotein of 515 amino acids with a putative signal peptide. The enzyme without a signal sequence (Man25) was overexpressed in Escherichia coli with a specific activity of 1286.2 U/mg. Moreover, a facile method for β-mannanase activity screening was established based on agar plates. The optimum temperature for the purified Man25 using LBG as a substrate was 55 °C. The catalytic activity and thermostability of Man25 displayed a strong dependence on calcium ions. Through saturation mutagenesis at the putative Ca2+ binding sites in Man25, the best mutant ManM3-3 (D143A) presented improvements in thermostability with 3.6-fold extended half-life at 55 °C compared with that of the wild-type. The results suggest that mutagenesis at metal binding sites could be an efficient approach to increase enzyme thermostability.
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Affiliation(s)
- Muzi Zhu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology , Guangdong Academy of Sciences , Guangzhou 510070 , China
| | | | - Fang Yang
- Integrative Microbiology Research Centre , South China Agricultural University , Guangzhou 510642 , China
| | | | | | | | | | - Jianjun Li
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology , Guangdong Academy of Sciences , Guangzhou 510070 , China
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17
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Liu Z, Ning C, Yuan M, Yang S, Wei X, Xiao M, Fu X, Zhu C, Mou H. High-level expression of a thermophilic and acidophilic β-mannanase from Aspergillus kawachii IFO 4308 with significant potential in mannooligosaccharide preparation. BIORESOURCE TECHNOLOGY 2020; 295:122257. [PMID: 31648129 DOI: 10.1016/j.biortech.2019.122257] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/08/2019] [Accepted: 10/09/2019] [Indexed: 06/10/2023]
Abstract
An engineered thermophilic and acidophilic β-mannanase (ManAK) from Aspergillus kawachii IFO 4308 was highly expressed in Pichia pastoris. Through high cell density fermentation, the maximum yield reached 11,600 U/mL and 15.5 g/L, which is higher than most extreme β-mannanases. The recombinant ManAK was thermostable with a temperature optimum of 80 °C, and acid tolerant with a pH optimum of 2.0. ManAK could efficiently degrade locust bean gum, konjac gum, and guar gum into small molecular mannooligosaccharide (<2000 Da), even at high initial substrate concentration (10%), and displayed different Mw distributions in their end products. Docking analysis demonstrated that the catalytic pocket of ManAK could only accommodate a galactopyranosyl residue in subsite -1, which might be responsible for the distinct hydrolysis product compositions from locust bean gum and guar gum. These superior properties of ManAK strongly facilitate mannooligosaccharide preparation and application in food and feed area.
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Affiliation(s)
- Zhemin Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003 China
| | - Chen Ning
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003 China
| | - Mingxue Yuan
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003 China
| | - Suxiao Yang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003 China
| | - Xinyi Wei
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003 China
| | - Mengshi Xiao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003 China
| | - Xiaodan Fu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003 China
| | - Changliang Zhu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003 China
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003 China.
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18
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Goyal D, Kumar K, Sharma K, Goyal A. Small-angle X-ray scattering based structure, modeling and molecular dynamics analyses of a family 5 glycoside hydrolase first endo-mannanase named as RfGH5_7 from Ruminococcus flavefaciens. J Biomol Struct Dyn 2019; 38:4371-4384. [PMID: 31608797 DOI: 10.1080/07391102.2019.1680438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Endo-β-1,4-mannanase named as RfGH5_7 from Ruminococcus flavefaciens cloned, expressed and purified earlier was structurally characterized in present study. The RaptorX modeled structure of RfGH5_7 showed a (β/α)8 Triose-phosphate Isomerase (TIM) barrel fold. The Ramachandran plot assessment of RfGH5_7 showed that all amino acids fall in allowed region except one, Asn22 in the disallowed region. The superposition of RfGH5_7 modeled structure with its nearest homologues revealed that Glu154 acts as proton donor while Glu249 acts as nucleophile. Secondary structure of RfGH5_7 through Circular Dichroism (CD) analysis revealed 33.5% α-helices, 17% β-strands and 49.5% random coils. Molecular Dynamic (MD) simulation showed Root Mean Square Deviation (RMSD), 0.67 nm and radius of gyration (Rg) between 1.9 nm and 1.85 nm. The binding interaction of mannotetraose on the surface of RfGH5_7 structure displayed polar interactions with His219, Tyr221, Trp278, Ser279 and Gly282 residues. Small-angle X-ray scattering (SAXS) analysis displayed the intact and monodispersed nature of the enzyme RfGH5_7. The radius of gyration (Rg) by Guinier analysis for globular shape was found to be 2.29 ± 0.09 nm and for rod-shape it was 0.95 ± 0.02 nm. Kratky plot confirmed that RfGH5_7 structure is compact and folded in solution. The ab initio derived dummy model of RfGH5_7 displayed single domain structure of yellow humped fish like shape. The RfGH5_7 modeled structure was well fitted with ab initio derived model from SAXS data. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Dishant Goyal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Krishan Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Kedar Sharma
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Arun Goyal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
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19
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Molecular Cloning, Expression and Biochemical Characterization of a Family 5 Glycoside Hydrolase First Endo-Mannanase (RfGH5_7) from Ruminococcus flavefaciens FD-1 v3. Mol Biotechnol 2019; 61:826-835. [DOI: 10.1007/s12033-019-00205-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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20
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Sharma K, Thakur A, Kumar R, Goyal A. Structure and biochemical characterization of glucose tolerant β-1,4 glucosidase (HtBgl) of family 1 glycoside hydrolase from Hungateiclostridium thermocellum. Carbohydr Res 2019; 483:107750. [PMID: 31357130 DOI: 10.1016/j.carres.2019.107750] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 06/14/2019] [Accepted: 07/16/2019] [Indexed: 12/15/2022]
Abstract
β-1,4-glucosidase (HtBgl) of family 1 glycoside hydrolase from Hungateiclostridium thermocellum was cloned in pET28a(+) vector, expressed, biochemically and structurally characterized. HtBgl displayed 67 U/mg activity against 4-nitrophenyl-β-d-glucopyranoside, followed by 180 U/mg against cellobiose and 42 U/mg activity against 4-nitrophenyl-β-d-galactopyranoside. HtBgl displayed an optimum temperature of 65 °C and an optimum pH of 6.0. HtBgl was stable in the pH range, 4.0-8.0 and displayed the thermostability up to 60 °C for 1 h. HtBgl displayed the glucose tolerance up to 750 mM and retained ~70% activity after 20 h. HtBgl crystal structure submitted (PDB id 5OGZ) by others exhibited a classical Triosephosphate Isomerase, (β/α)8-barrel fold. Protein melting analysis of HtBgl exhibited a single peak at 78 °C and the addition of 5 mM Mg2+ shifted the peak to 82 °C. Molecular dynamics studies showed that the amino acid residues from 351 to 375 exhibit the flexibility due to the presence of the catalytic acid residue. The structure comparison of HtBgl with homologous proteins and its docking analysis with probable ligands revealed that the residues, E166 and E355 are involved in the catalysis. The SAXS analysis of HtBgl showed that the protein is monomeric and present in a fully folded state. The radius of gyration (Rg) found was 2.15-2.26 nm. The bell-shaped curve obtained by Kratky plot analysis displayed the globular shape and fully folded state with flexibility in the N-terminal region. The HtBgl crystal structure superposed well with the SAXS derived dummy atom model.
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Affiliation(s)
- Kedar Sharma
- DBT PAN-IIT Centre of Bioenergy, Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Abhijeet Thakur
- DBT PAN-IIT Centre of Bioenergy, Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Rajeev Kumar
- DBT PAN-IIT Centre of Bioenergy, Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Arun Goyal
- DBT PAN-IIT Centre of Bioenergy, Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
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21
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Gao DY, Sun XB, Liu MQ, Liu YN, Zhang HE, Shi XL, Li YN, Wang JK, Yin SJ, Wang Q. Characterization of Thermostable and Chimeric Enzymes via Isopeptide Bond-Mediated Molecular Cyclization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6837-6846. [PMID: 31180217 DOI: 10.1021/acs.jafc.9b01459] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Mannooligosaccharides are released by mannan-degrading endo-β-1,4-mannanase and are known as functional additives in human and animal diets. To satisfy demands for biocatalysis and bioprocessing in crowed environments, in this study, we employed a recently developed enzyme-engineering system, isopeptide bond-mediated molecular cyclization, to modify a mesophilic mannanase from Bacillus subtilis. The results revealed that the cyclized enzymes showed enhanced thermostability and ion stability and resilience to aggregation and freeze-thaw treatment by maintaining their conformational structures. Additionally, by using the SpyTag/SpyCatcher system, we generated a mannanase-xylanase bifunctional enzyme that exhibited a synergistic activity in substrate deconstruction without compromising substrate affinity. Interestingly, the dual-enzyme ring conformation was observed to be more robust than the linear enzyme but inferior to the single-enzyme ring conformation. Taken together, these findings provided new insights into the mechanisms of molecular cyclization on stability improvement and will be useful in the production of new functional oligosaccharides and feed additives.
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Affiliation(s)
- De-Ying Gao
- College of Biological and Environmental Sciences , Zhejiang Wanli University , Ningbo 315100 , Zhejiang , China
| | - Xiao-Bao Sun
- College of Biological and Environmental Sciences , Zhejiang Wanli University , Ningbo 315100 , Zhejiang , China
| | - Ming-Qi Liu
- National and Local United Engineering Lab of Quality Controlling Technology and Instrumentation for Marine Food, College of Life Science , China Jiliang University , Hangzhou 310018 , Zhejiang , China
| | - Yan-Ni Liu
- College of Biological and Environmental Sciences , Zhejiang Wanli University , Ningbo 315100 , Zhejiang , China
| | - Hui-En Zhang
- College of Biological and Environmental Sciences , Zhejiang Wanli University , Ningbo 315100 , Zhejiang , China
| | - Xin-Lei Shi
- College of Biological and Environmental Sciences , Zhejiang Wanli University , Ningbo 315100 , Zhejiang , China
| | - Yang-Nan Li
- College of Biological and Environmental Sciences , Zhejiang Wanli University , Ningbo 315100 , Zhejiang , China
| | - Jia-Kun Wang
- College of Animal Science , Zhejiang University , Hangzhou 310058 , Zhejiang , China
| | - Shang-Jun Yin
- College of Biological and Environmental Sciences , Zhejiang Wanli University , Ningbo 315100 , Zhejiang , China
| | - Qian Wang
- College of Biological and Environmental Sciences , Zhejiang Wanli University , Ningbo 315100 , Zhejiang , China
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22
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Sharma K, Fontes CMGA, Najmudin S, Goyal A. Molecular organization and protein stability of the Clostridium thermocellum glucuronoxylan endo-β-1,4-xylanase of family 30 glycoside hydrolase in solution. J Struct Biol 2019; 206:335-344. [PMID: 30959107 DOI: 10.1016/j.jsb.2019.04.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/02/2019] [Accepted: 04/04/2019] [Indexed: 11/19/2022]
Abstract
Glucuronoxylan-β-1,4-xylanohydrolase from Clostridium thermocellum (CtXynGH30) hydrolyzes β-1,4-xylosidic linkages in 4-O-Methyl-D-glucuronoxylan. CtXynGH30 comprises an N-terminal catalytic domain, CtXyn30A, joined by a typical linker sequence to a family 6 carbohydrate-binding module, termed CtCBM6. ITC, mass spectrometric and enzyme activity analyses of CtXyn30A:CtCBM6 (1:1 M ratio), CtXyn30A and CtXynGH30 showed that the linker peptide plays a key role in connecting and orienting CtXyn30A and CtCBM6 modules resulting in the enhanced activity of CtXynGH30. To visualize the disposition of the two protein domains of CtXynGH30, SAXS analysis revealed that CtXynGH30 is monomeric and has a boot-shaped molecular envelope in solution with a Dmax of 18 nm and Rg of 3.6 nm. Kratky plot displayed the protein in a fully folded and flexible state. The ab initio derived dummy atom model of CtXynGH30 superposed well with the modelled structure.
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Affiliation(s)
- Kedar Sharma
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Carlos M G A Fontes
- CIISA-Faculdade de Medicina Veterinária, Universidade de Lisboa, Av. da Universidade Técnica, 1300-477 Lisboa, Portugal
| | - Shabir Najmudin
- CIISA-Faculdade de Medicina Veterinária, Universidade de Lisboa, Av. da Universidade Técnica, 1300-477 Lisboa, Portugal
| | - Arun Goyal
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
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23
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Cloning and expression of a β-mannanase gene from Bacillus sp. MK-2 and its directed evolution by random mutagenesis. Enzyme Microb Technol 2019; 124:70-78. [DOI: 10.1016/j.enzmictec.2019.02.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/01/2019] [Accepted: 02/06/2019] [Indexed: 11/22/2022]
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24
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Kumar S, Dangi AK, Shukla P, Baishya D, Khare SK. Thermozymes: Adaptive strategies and tools for their biotechnological applications. BIORESOURCE TECHNOLOGY 2019; 278:372-382. [PMID: 30709766 DOI: 10.1016/j.biortech.2019.01.088] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/19/2019] [Accepted: 01/21/2019] [Indexed: 05/10/2023]
Abstract
In today's scenario of global climate change, there is a colossal demand for sustainable industrial processes and enzymes from thermophiles. Plausibly, thermozymes are an important toolkit, as they are known to be polyextremophilic in nature. Small genome size and diverse molecular conformational modifications have been implicated in devising adaptive strategies. Besides, the utilization of chemical technology and gene editing attributions according to mechanical necessities are the additional key factor for efficacious bioprocess development. Microbial thermozymes have been extensively used in waste management, biofuel, food, paper, detergent, medicinal and pharmaceutical industries. To understand the strength of enzymes at higher temperatures different models utilize X-ray structures of thermostable proteins, machine learning calculations, neural networks, but unified adaptive measures are yet to be totally comprehended. The present review provides a recent updates on thermozymes and various interdisciplinary applications including the aspects of thermophiles bioengineering utilizing synthetic biology and gene editing tools.
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Affiliation(s)
- Sumit Kumar
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Arun K Dangi
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, India
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, India
| | - Debabrat Baishya
- Department of Bioengineering and Technology, Institute of Science and Technology, Gauhati University, Guwahati 781014, Assam, India
| | - Sunil K Khare
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016, India.
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25
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Delineating thermophilic xylanase from Bacillus licheniformis DM5 towards its potential application in xylooligosaccharides production. World J Microbiol Biotechnol 2019; 35:34. [DOI: 10.1007/s11274-019-2605-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 01/22/2019] [Indexed: 10/27/2022]
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26
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Aulitto M, Fusco S, Limauro D, Fiorentino G, Bartolucci S, Contursi P. Galactomannan degradation by thermophilic enzymes: a hot topic for biotechnological applications. World J Microbiol Biotechnol 2019; 35:32. [DOI: 10.1007/s11274-019-2591-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 01/10/2019] [Indexed: 01/06/2023]
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27
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Liu W, Tu T, Gu Y, Wang Y, Zheng F, Zheng J, Wang Y, Su X, Yao B, Luo H. Insight into the Thermophilic Mechanism of a Glycoside Hydrolase Family 5 β-Mannanase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:473-483. [PMID: 30518205 DOI: 10.1021/acs.jafc.8b04860] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To study the molecular basis for thermophilic β-mannanase of glycoside hydrolase family 5, two β-mannanases, TlMan5A and PMan5A, from Talaromyces leycettanus JCM12802 and Penicillium sp. WN1 were used as models. The four residues, His112 and Phe113, located near the antiparallel β-sheet at the barrel bottom and Leu375 and Ala408 from loop 7 and loop 8 of PMan5A, were inferred to be key thermostability contributors through module substitution, truncation, and site-directed mutagenesis. The effects of these four residues on the thermal properties followed the order H112Y > A408P > L375H > F113Y and were strongly synergetic. These results were interpreted structurally using molecular dynamics (MD) simulations, which showed that improved hydrophobic interactions in the inner wall of the β-barrel and the rigidity of loop 8 were caused by the outside domain of the barrel bottom and proline, respectively. The TIM barrel bottom and four specific residues responsible for the thermostability of GH5 β-mannanases were elucidated.
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Affiliation(s)
- Weina Liu
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
| | - Tao Tu
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
| | - Yuan Gu
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
| | - Yuan Wang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
| | - Fei Zheng
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
| | - Jie Zheng
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
| | - Yaru Wang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
| | - Xiaoyun Su
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
| | - Bin Yao
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
| | - Huiying Luo
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture , Feed Research Institute, Chinese Academy of Agricultural Sciences , Beijing 100086 , People's Republic of China
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Jana UK, Suryawanshi RK, Prajapati BP, Soni H, Kango N. Production optimization and characterization of mannooligosaccharide generating β-mannanase from Aspergillus oryzae. BIORESOURCE TECHNOLOGY 2018; 268:308-314. [PMID: 30092484 DOI: 10.1016/j.biortech.2018.07.143] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 06/08/2023]
Abstract
A multi-tolerant β-mannanase (ManAo) was produced by Aspergillus oryzae on copra meal, a low-cost agro waste. Under statistically optimized conditions, 4.3-fold increase in β-mannanase production (434 U/gds) was obtained. Purified ManAo had MW ∼34 kDa and specific activity of 335.85 U/mg with optimum activity at 60 °C and at pH 5.0. Activity of ManAo was enhanced by most metal ions and modulators while maximum enhancement was noticed with Ag+ and Triton X-100. Km and Vmax were 2.7 mg/mL and 1388.8 µmol/min/mg for locust bean gum while the enzyme showed lower affinity towards konjac gum (8.8 mg/mL, 555.5 µmol/min/mg). Evaluation of various thermodynamic parameters indicated high-efficiency of the ManAo with activation energy 12.42 KJ/mol and 23.31 KJ/mol towards LBG and konjac gum, respectively. End product analysis of β-mannanase action by fluorescence assisted carbohydrate electrophoresis (FACE) revealed the generation of sugars from DP 1-4 with some higher DP MOS from different mannans.
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Affiliation(s)
- Uttam Kumar Jana
- Department of Microbiology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP 470003, India
| | - Rahul Kumar Suryawanshi
- Department of Microbiology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP 470003, India
| | - Bhanu Pratap Prajapati
- Department of Microbiology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP 470003, India
| | - Hemant Soni
- Department of Microbiology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP 470003, India
| | - Naveen Kango
- Department of Microbiology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, MP 470003, India.
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Intaratrakul K, Nitisinprasert S, Nguyen TH, Haltrich D, Keawsompong S. Secretory expression of β-mannanase from Bacillus circulans NT 6.7 in Lactobacillus plantarum. Protein Expr Purif 2017; 139:29-35. [DOI: 10.1016/j.pep.2017.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 07/08/2017] [Accepted: 07/11/2017] [Indexed: 12/14/2022]
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A Recombinant Highly Thermostable β-Mannanase (ReTMan26) from Thermophilic Bacillus subtilis (TBS2) Expressed in Pichia pastoris and Its pH and Temperature Stability. Appl Biochem Biotechnol 2017; 182:1259-1275. [PMID: 28101787 DOI: 10.1007/s12010-017-2397-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 01/02/2017] [Indexed: 10/20/2022]
Abstract
A gene encoding a highly thermostable β-mannanase from a thermophilic Bacillus subtilis (TBS2) was successfully expressed in Pichia pastoris. The maximum activity of the recombinant thermostable β-mannanase (ReTMan26) was 5435 U/mL, which was obtained by high-density, fed-batch cultivation after 168-h induction with methanol in a 50-L bioreactor. The protein yield reached 3.29 mg/mL, and the protein had a molecular weight of ~42 kDa. After fermentation, ReTMan26 was purified using a 10-kDa cut-off membrane and Sephadex G-75 column. The pH and temperature optima of purified ReTMan26 were pH 6.0 and 60 °C, respectively, and the enzyme was stable at pH 2.0-8.0 and was active at 20-100 °C. HPLC analysis of the products of locust bean gum hydrolysis showed that the mannan-oligosaccharide content was 62.5%. ReTMan26 retained 58.6% of its maximum activity after treatment at 100 °C for 10 min, which was higher than any other β-mannanase reported up to now, suggesting its potential for industrial applications.
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31
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Production, properties, and applications of endo-β-mannanases. Biotechnol Adv 2017; 35:1-19. [DOI: 10.1016/j.biotechadv.2016.11.001] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 10/12/2016] [Accepted: 11/07/2016] [Indexed: 12/27/2022]
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Chaikaew S, Kanpiengjai A, Intatep J, Unban K, Wongputtisin P, Takata G, Khanongnuch C. X-ray-induced mutation of Bacillus sp. MR10 for manno-oligosaccharides production from copra meal. Prep Biochem Biotechnol 2016; 47:424-433. [DOI: 10.1080/10826068.2016.1252929] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Siriporn Chaikaew
- Division of Biotechnology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
| | - Apinun Kanpiengjai
- Division of Biotechnology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
| | - Jenjira Intatep
- Division of Biotechnology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
| | - Kridsada Unban
- Division of Biotechnology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
| | - Pairote Wongputtisin
- Program in Biotechnology, Faculty of Science, Maejo University, Chiang Mai, Thailand
| | - Goro Takata
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki-cho, Kagawa, Japan
| | - Chartchai Khanongnuch
- Division of Biotechnology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
- Cluster of Excellence on Biodiversity based Economy and Society (B-BES), Chiang Mai University, Chiang Mai, Thailand
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Ladevèze S, Laville E, Despres J, Mosoni P, Potocki-Véronèse G. Mannoside recognition and degradation by bacteria. Biol Rev Camb Philos Soc 2016; 92:1969-1990. [PMID: 27995767 DOI: 10.1111/brv.12316] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 11/01/2016] [Accepted: 11/11/2016] [Indexed: 11/29/2022]
Abstract
Mannosides constitute a vast group of glycans widely distributed in nature. Produced by almost all organisms, these carbohydrates are involved in numerous cellular processes, such as cell structuration, protein maturation and signalling, mediation of protein-protein interactions and cell recognition. The ubiquitous presence of mannosides in the environment means they are a reliable source of carbon and energy for bacteria, which have developed complex strategies to harvest them. This review focuses on the various mannosides that can be found in nature and details their structure. It underlines their involvement in cellular interactions and finally describes the latest discoveries regarding the catalytic machinery and metabolic pathways that bacteria have developed to metabolize them.
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Affiliation(s)
- Simon Ladevèze
- LISBP, Université de Toulouse, CNRS, INRA, INSA, 31077, Toulouse, France
| | - Elisabeth Laville
- LISBP, Université de Toulouse, CNRS, INRA, INSA, 31077, Toulouse, France
| | - Jordane Despres
- INRA, UR454 Microbiologie, F-63122, Saint-Genès Champanelle, France
| | - Pascale Mosoni
- INRA, UR454 Microbiologie, F-63122, Saint-Genès Champanelle, France
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Enzymatic diversity of the Clostridium thermocellum cellulosome is crucial for the degradation of crystalline cellulose and plant biomass. Sci Rep 2016; 6:35709. [PMID: 27759119 PMCID: PMC5069625 DOI: 10.1038/srep35709] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 10/03/2016] [Indexed: 01/18/2023] Open
Abstract
The cellulosome is a supramolecular multienzyme complex comprised of a wide variety of polysaccharide-degrading enzymes and scaffold proteins. The cellulosomal enzymes that bind to the scaffold proteins synergistically degrade crystalline cellulose. Here, we report in vitro reconstitution of the Clostridium thermocellum cellulosome from 40 cellulosomal components and the full-length scaffoldin protein that binds to nine enzyme molecules. These components were each synthesized using a wheat germ cell-free protein synthesis system and purified. Cellulosome complexes were reconstituted from 3, 12, 30, and 40 components based on their contents in the native cellulosome. The activity of the enzyme-saturated complex indicated that greater enzymatic variety generated more synergy for the degradation of crystalline cellulose and delignified rice straw. Surprisingly, a less complete enzyme complex displaying fewer than nine enzyme molecules was more efficient for the degradation of delignified rice straw than the enzyme-saturated complex, despite the fact that the enzyme-saturated complex exhibited maximum synergy for the degradation of crystalline cellulose. These results suggest that greater enzymatic diversity of the cellulosome is crucial for the degradation of crystalline cellulose and plant biomass, and that efficient degradation of different substrates by the cellulosome requires not only a different enzymatic composition, but also different cellulosome structures.
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A novel member of family 30 glycoside hydrolase subfamily 8 glucuronoxylan endo-β-1,4-xylanase (CtXynGH30) from Clostridium thermocellum orchestrates catalysis on arabinose decorated xylans. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2016.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ghosh A, Verma AK, Tingirikari JR, Shukla R, Goyal A. Recovery and purification of oligosaccharides from copra meal by recombinant endo-β-mannanase and deciphering molecular mechanism involved and its role as potent therapeutic agent. Mol Biotechnol 2015; 57:111-27. [PMID: 25260892 DOI: 10.1007/s12033-014-9807-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Production of manno-oligosaccharides (MOSs) from pretreated and defatted copra meal (dFCO) hydrolysis was achieved by endo-mannanase. Structural characterization of dFCO by FT-IR and NMR exhibited resemblance with galactomannan. The time-dependent hydrolysis of dFCO by recombinant endo-β-(1 → 4)-mannanase of Clostridium thermocellum by TLC and HPAEC displayed the release of mannose and MOSs mannobiose and mannotriose. Purified MOSs yielded 40 % mannobiose and 18 % mannotriose confirmed by mass spectroscopy which showed mannobiose (m/z = 365) and mannotriose (m/z = 527). The homology based structural analysis of catalytic endo-mannanase (CtManT) showed the catalytic core composed of Glu181 and Glu300 acting as acid/base and Glu288 as a nucleophile during galactomannan hydrolysis. Sub-site mapping of CtManT exhibited two aglycone and four glycone sites at cleavage sites existing on either side of β-(1 → 4)-linkage of galactomannan. Isolated MOSs displayed potential prebiotic characteristics and supported higher growth of probiotic Lactobacillus acidophilus and Bifidobacterium infantis than with standard inulin. Moreover, MOSs displayed over 97 % tolerance to simulated gastric juice, intestinal fluid, and α-amylase proving its potential as a stable prebiotic over inulin. In vitro cytotoxicity assay of MOSs (500 µg/mL) on human epithelial colorectal adenocarcinoma cell line (HT-29) demonstrated 60 % decreased viability of cells after 48 h displaying anti-tumorigenic property.
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Affiliation(s)
- Arabinda Ghosh
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati, 781 039, Assam, India,
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37
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A review of the enzymatic hydrolysis of mannans and synergistic interactions between β-mannanase, β-mannosidase and α-galactosidase. World J Microbiol Biotechnol 2015; 31:1167-75. [DOI: 10.1007/s11274-015-1878-2] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 05/23/2015] [Indexed: 10/23/2022]
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38
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Chauhan PS, Tripathi SP, Sangamwar AT, Puri N, Sharma P, Gupta N. Cloning, molecular modeling, and docking analysis of alkali-thermostable β-mannanase from Bacillus nealsonii PN-11. Appl Microbiol Biotechnol 2015; 99:8917-25. [DOI: 10.1007/s00253-015-6613-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 04/09/2015] [Accepted: 04/15/2015] [Indexed: 11/30/2022]
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39
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Zhang R, Zhou J, Gao Y, Guan Y, Li J, Tang X, Xu B, Ding J, Huang Z. Molecular and biochemical characterizations of a new low-temperature active mannanase. Folia Microbiol (Praha) 2015; 60:483-92. [DOI: 10.1007/s12223-015-0391-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 04/01/2015] [Indexed: 10/23/2022]
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40
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Gupta A, Das SP, Ghosh A, Choudhary R, Das D, Goyal A. Bioethanol production from hemicellulose rich Populus nigra involving recombinant hemicellulases from Clostridium thermocellum. BIORESOURCE TECHNOLOGY 2014; 165:205-13. [PMID: 24767793 DOI: 10.1016/j.biortech.2014.03.132] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/22/2014] [Accepted: 03/24/2014] [Indexed: 05/11/2023]
Abstract
Bioethanol was produced from poplar leafy biomass rich in hemicelluloses content involving recombinant Clostridium thermocellum hemicellulases and pentose sugar utilizing Candida shehatae. FT-IR analysis revealed effective AFEX pretreatment of poplar leaves. Repetitive batch strategy yielded ∼1.5-fold rise in cell biomass and specific activity of both, acetylxylanesterase (Axe) and GH43 hemicellulase. TLC and HPAEC exhibited xylose and arabinose release from hydrolyzed biomass. SSF trial with 1% (wv(-1)) pretreated poplar and mixed enzymes showed ∼1.5-fold higher ethanol titre as compared with SHF. The shake flask SSF with 5% (wv(-1)) pretreated poplar furnished 4.56 and 5.43gL(-1) ethanol with Axe and mixed enzymes, respectively. Whereas, bioreactor scale-up exhibited ∼1.25-fold increase in ethanol titres (5.68, 6.75gL(-1)) as compared with shake flask with an yield of 0.295 (gg(-1)) and 0.351 (gg(-1)), respectively with Axe and mixed enzymes.
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Affiliation(s)
- Ashutosh Gupta
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Saprativ P Das
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Arabinda Ghosh
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Rajan Choudhary
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur 713209, West Bengal, India
| | - Debasish Das
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Arun Goyal
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
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