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Hellmann MJ, Moerschbacher BM, Cord-Landwehr S. Fast insights into chitosan-cleaving enzymes by simultaneous analysis of polymers and oligomers through size exclusion chromatography. Sci Rep 2024; 14:3417. [PMID: 38341520 PMCID: PMC10858908 DOI: 10.1038/s41598-024-54002-2] [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: 06/14/2023] [Accepted: 02/07/2024] [Indexed: 02/12/2024] Open
Abstract
The thorough characterization of chitosan-cleaving enzymes is crucial to unveil structure-function relationships of this promising class of biomolecules for both, enzymatic fingerprinting analyses and to use the enzymes as biotechnological tools to produce tailor-made chitosans for diverse applications. Analyzing polymeric substrates as well as oligomeric products has been established as an effective way to understand the actions of enzymes, but it currently requires separate, rather laborious methods to obtain the full picture. Here, we present ultra high performance size exclusion chromatography coupled to refractive index and mass spectrometry detection (UHPSEC-RI-MS) as a straightforward method for the semi-quantitative analysis of chitosan oligomers of up to ten monomers in length. Additionally, the method allows to determine the average molecular weight of the remaining polymers and its distribution. By sampling live from an ongoing enzymatic reaction, UHPSEC-RI-MS offers the unique opportunity to analyze polymers and oligomers simultaneously-i.e., to monitor the molecular weight reduction of the polymeric substrate over the course of the digestion, while at the same time analyzing the emerging oligomeric products in a semi-quantitative manner. In this way, a single simple analysis yields detailed insights into an enzyme's action on a given substrate.
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Affiliation(s)
- Margareta J Hellmann
- Institute for Biology and Biotechnology of Plants, University of Münster, 48143, Münster, Germany
| | - Bruno M Moerschbacher
- Institute for Biology and Biotechnology of Plants, University of Münster, 48143, Münster, Germany.
| | - Stefan Cord-Landwehr
- Institute for Biology and Biotechnology of Plants, University of Münster, 48143, Münster, Germany
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2
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Minguet-Lobato M, Cervantes FV, Míguez N, Plou FJ, Fernández-Lobato M. Chitinous material bioconversion by three new chitinases from the yeast Mestchnikowia pulcherrima. Microb Cell Fact 2024; 23:31. [PMID: 38245740 PMCID: PMC10799394 DOI: 10.1186/s12934-024-02300-9] [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: 09/19/2023] [Accepted: 01/09/2024] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND Chitinases are widely distributed enzymes that perform the biotransformation of chitin, one of the most abundant polysaccharides on the biosphere, into useful value-added chitooligosaccharides (COS) with a wide variety of biotechnological applications in food, health, and agricultural fields. One of the most important group of enzymes involved in the degradation of chitin comprises the glycoside hydrolase family 18 (GH18), which harbours endo- and exo-enzymes that act synergistically to depolymerize chitin. The secretion of a chitinase activity from the ubiquitous yeast Mestchnikowia pulcherrima and their involvement in the post-harvest biological control of fungal pathogens was previously reported. RESULTS Three new chitinases from M. pulcherrima, MpChit35, MpChit38 and MpChit41, were molecularly characterized and extracellularly expressed in Pichia pastoris to about 91, 90 and 71 mU ml- 1, respectively. The three enzymes hydrolysed colloidal chitin with optimal activity at 45 ºC and pH 4.0-4.5, increased 2-times their activities using 1 mM of Mn2+ and hydrolysed different types of commercial chitosan. The partial separation and characterization of the complex COS mixtures produced from the hydrolysis of chitin and chitosan were achieved by a new anionic chromatography HPAEC-PAD method and mass spectrometry assays. An overview of the predicted structures of these proteins and their catalytic modes of action were also presented. Depicted their high sequence and structural homology, MpChit35 acted as an exo-chitinase producing di-acetyl-chitobiose from chitin while MpChit38 and MpChit41 both acted as endo-chitinases producing tri-acetyl-chitotriose as main final product. CONCLUSIONS Three new chitinases from the yeast M. pulcherrima were molecularly characterized and their enzymatic and structural characteristics analysed. These enzymes transformed chitinous materials to fully and partially acetylated COS through different modes of splitting, which make them interesting biocatalysts for deeper structural-function studies on the challenging enzymatic conversion of chitin.
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Affiliation(s)
- Marina Minguet-Lobato
- Department of Molecular Biology, Centre for Molecular Biology Severo Ochoa (CBMSO, CSIC-UAM), University Autonomous from Madrid, C/ Nicolás Cabrera, 1. Cantoblanco, Madrid, 28049, Spain
- Institute of Catalysis and Petrochemistry, CSIC. C/ Marie Curie, 2. Cantoblanco, Madrid, 28049, Spain
| | - Fadia V Cervantes
- Institute of Catalysis and Petrochemistry, CSIC. C/ Marie Curie, 2. Cantoblanco, Madrid, 28049, Spain
| | - Noa Míguez
- Institute of Catalysis and Petrochemistry, CSIC. C/ Marie Curie, 2. Cantoblanco, Madrid, 28049, Spain
| | - Francisco J Plou
- Institute of Catalysis and Petrochemistry, CSIC. C/ Marie Curie, 2. Cantoblanco, Madrid, 28049, Spain.
| | - María Fernández-Lobato
- Department of Molecular Biology, Centre for Molecular Biology Severo Ochoa (CBMSO, CSIC-UAM), University Autonomous from Madrid, C/ Nicolás Cabrera, 1. Cantoblanco, Madrid, 28049, Spain.
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Jin C, Ma JX, Wang H, Tang LX, Ye YF, Li X, Si J. First genome assembly and annotation of Sanghuangporus weigelae uncovers its medicinal functions, metabolic pathways, and evolution. Front Cell Infect Microbiol 2024; 13:1325418. [PMID: 38264724 PMCID: PMC10803629 DOI: 10.3389/fcimb.2023.1325418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 12/18/2023] [Indexed: 01/25/2024] Open
Abstract
Sanghuangporus, also known as "Sanghuang" in China, is a well-known genus of traditional Chinese medicinal macrofungi. To make more effective use of Sanghuangporus resources, we completed the first genome assembly and annotation of a monokaryon strain of S. weigelae in the present study. A 33.96-Mb genome sequence was assembled as 13 contigs, leading to prediction of 9377 protein-coding genes. Phylogenetic and average nucleotide identity analyses indicated that the S. weigelae genome is closely related to those of other Sanghuangporus species in evolutionary tree, which clustered in one clade. Collinearity analysis revealed a high level of collinearity of S. weigelae with S. baumii, S. vaninii, and S. sanghuang. Biosynthesis pathways potentially involved in medicinal properties, including terpenoid and polysaccharide synthesis, were identified in S. weigelae, while polysaccharides were identified as the main medicinal metabolites in S. weigelae, with flavonoids more important in Sanghuangporus than other medicinal mushroom groups. Genes encoding 332 carbohydrate-active enzymes were identified in the S. weigelae genome, including major glycoside hydrolases and glycosyltransferases predicted, revealing the robust lignocellulose degradation capacity of S. weigelae. Further, 130 genes, clustered in seven classes were annotated to encode cytochromes P450 in the S. weigelae genome. Overall, our results reveal the remarkably medicinal capacity of S. weigelae and provide new insights that will inform the study of evolution and medicinal application of S. weigelae. The data are a reference resource for the formulation of scientific and rational ecological protection policies for Sanghuangporus species.
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Affiliation(s)
| | | | | | | | | | | | - Jing Si
- Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
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4
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Liu Y, Qin Z, Wang C, Jiang Z. N-acetyl-d-glucosamine-based oligosaccharides from chitin: Enzymatic production, characterization and biological activities. Carbohydr Polym 2023; 315:121019. [PMID: 37230627 DOI: 10.1016/j.carbpol.2023.121019] [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: 03/10/2023] [Revised: 04/28/2023] [Accepted: 05/09/2023] [Indexed: 05/27/2023]
Abstract
Chitin, the second most abundant biopolymer, possesses diverse applications in the food, agricultural, and pharmaceutical industries due to its functional properties. However, the potential applications of chitin are limited owing to its high crystallinity and low solubility. N-acetyl chitooligosaccharides and lacto-N-triose II, the two types of GlcNAc-based oligosaccharides, can be obtained from chitin by enzymatic methods. With their lower molecular weights and improved solubility, these two types of GlcNAc-based oligosaccharides display more various beneficial health effects when compared to chitin. Among their abilities, they have exhibited antioxidant, anti-inflammatory, anti-tumor, antimicrobial, and plant elicitor activities as well as immunomodulatory and prebiotic effects, which suggests they have the potential to be utilized as food additives, functional daily supplements, drug precursors, elicitors for plants, and prebiotics. This review comprehensively covers the enzymatic methods used for the two types of GlcNAc-based oligosaccharides production from chitin by chitinolytic enzymes. Moreover, current advances in the structural characterization and biological activities of these two types of GlcNAc-based oligosaccharides are summarized in the review. We also highlight current problems in the production of these oligosaccharides and trends in their development, aiming to offer some directions for producing functional oligosaccharides from chitin.
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Affiliation(s)
- Yihao Liu
- College of Food Science and Engineering, State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science & Technology, Tianjin Economy Technological Development Area, No. 29, 13th Avenue, Tianjin 300222, People's Republic of China
| | - Zhen Qin
- School of Life Sciences, Shanghai University, Baoshan District, No.99 Shangda Road, Shanghai 200444, People's Republic of China
| | - Chunling Wang
- College of Food Science and Engineering, State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science & Technology, Tianjin Economy Technological Development Area, No. 29, 13th Avenue, Tianjin 300222, People's Republic of China.
| | - Zhengqiang Jiang
- Key Laboratory of Food Bioengineering (China National Light Industry), College of Food Science and Nutritional Engineering, China Agricultural University, Haidian District, No.17 Qinghua East Road, Beijing 100083, People's Republic of China.
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Sreekumar S, Wattjes J, Niehues A, Mengoni T, Mendes AC, Morris ER, Goycoolea FM, Moerschbacher BM. Biotechnologically produced chitosans with nonrandom acetylation patterns differ from conventional chitosans in properties and activities. Nat Commun 2022; 13:7125. [PMID: 36418307 PMCID: PMC9684148 DOI: 10.1038/s41467-022-34483-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 10/27/2022] [Indexed: 11/24/2022] Open
Abstract
Chitosans are versatile biopolymers with multiple biological activities and potential applications. They are linear copolymers of glucosamine and N-acetylglucosamine defined by their degree of polymerisation (DP), fraction of acetylation (FA), and pattern of acetylation (PA). Technical chitosans produced chemically from chitin possess defined DP and FA but random PA, while enzymatically produced natural chitosans probably have non-random PA. This natural process has not been replicated using biotechnology because chitin de-N-acetylases do not efficiently deacetylate crystalline chitin. Here, we show that such enzymes can partially N-acetylate fully deacetylated chitosan in the presence of excess acetate, yielding chitosans with FA up to 0.7 and an enzyme-dependent non-random PA. The biotech chitosans differ from technical chitosans both in terms of physicochemical and nanoscale solution properties and biological activities. As with synthetic block co-polymers, controlling the distribution of building blocks within the biopolymer chain will open a new dimension of chitosan research and exploitation.
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Affiliation(s)
- Sruthi Sreekumar
- grid.5949.10000 0001 2172 9288Institute for Biology and Biotechnology of Plants, University of Münster, 48143 Münster, Germany ,grid.5170.30000 0001 2181 8870Research Group for Food Production Engineering, Laboratory of Nano-BioScience, National Food Institute, Technical University of Denmark, 2800 Kgs Lyngby, Denmark ,grid.9909.90000 0004 1936 8403School of Food Science and Nutrition, University of Leeds, LS2 9JT Leeds, United Kingdom
| | - Jasper Wattjes
- grid.5949.10000 0001 2172 9288Institute for Biology and Biotechnology of Plants, University of Münster, 48143 Münster, Germany ,grid.5170.30000 0001 2181 8870Research Group for Food Production Engineering, Laboratory of Nano-BioScience, National Food Institute, Technical University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Anna Niehues
- grid.5949.10000 0001 2172 9288Institute for Biology and Biotechnology of Plants, University of Münster, 48143 Münster, Germany
| | - Tamara Mengoni
- grid.5949.10000 0001 2172 9288Institute for Biology and Biotechnology of Plants, University of Münster, 48143 Münster, Germany
| | - Ana C. Mendes
- grid.5170.30000 0001 2181 8870Research Group for Food Production Engineering, Laboratory of Nano-BioScience, National Food Institute, Technical University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Edwin R. Morris
- grid.7872.a0000000123318773School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Francisco M. Goycoolea
- grid.5949.10000 0001 2172 9288Institute for Biology and Biotechnology of Plants, University of Münster, 48143 Münster, Germany ,grid.9909.90000 0004 1936 8403School of Food Science and Nutrition, University of Leeds, LS2 9JT Leeds, United Kingdom
| | - Bruno M. Moerschbacher
- grid.5949.10000 0001 2172 9288Institute for Biology and Biotechnology of Plants, University of Münster, 48143 Münster, Germany
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Thomas R, Fukamizo T, Suginta W. Bioeconomic production of high-quality chitobiose from chitin food wastes using an in-house chitinase from Vibrio campbellii. BIORESOUR BIOPROCESS 2022; 9:86. [PMID: 38647850 PMCID: PMC10991452 DOI: 10.1186/s40643-022-00574-8] [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: 05/24/2022] [Accepted: 08/05/2022] [Indexed: 11/10/2022] Open
Abstract
Marine Vibrio species are natural degraders of chitin and usually secrete high levels of chitinolytic enzymes to digest recalcitrant chitin to chitooligosaccharides. This study used an endochitinase (VhChiA) from Vibrio campbellii to produce high-quality chitobiose from crustacean chitins. The enzyme was shown to be fully active and stable over 24 h when BSA was used as an additive. When different chitin sources were tested, VhChiA preferentially digested shrimp and squid (α) chitins compared to crab (β) chitin and did not utilize non-chitin substrates. The overall yields of chitobiose obtained from small-scale production using a single-step reaction was 96% from shrimp, and 91% from squid pen and crab-shell chitins. Larger-scale production yielded 200 mg of chitobiose, with > 99% purity after a desalting and purification step using preparative HPLC. In conclusion, we report the employment of an in-house produced chitinase as an effective biocatalyst to rapidly convert chitin food wastes to chitobiose, in a quantity and quality suitable for use in research and commercial purposes. Chitobiose production by this economical and eco-friendly approach can be easily scaled up to obtain multi-gram quantities of chitobiose for chemo-enzymic synthesis of rare chitooligosaccharide derivatives and long chain chitooligosaccharides, as well as preparation of sugar-based functionalized nanomaterials.
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Affiliation(s)
- Reeba Thomas
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Payupnai, Wangchan District, Rayong, 21210, Thailand
| | - Tamo Fukamizo
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Payupnai, Wangchan District, Rayong, 21210, Thailand
| | - Wipa Suginta
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Payupnai, Wangchan District, Rayong, 21210, Thailand.
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7
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Uehara M, Takasaki C, Wakita S, Sugahara Y, Tabata E, Matoska V, Bauer PO, Oyama F. Crab-Eating Monkey Acidic Chitinase (CHIA) Efficiently Degrades Chitin and Chitosan under Acidic and High-Temperature Conditions. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020409. [PMID: 35056724 PMCID: PMC8781735 DOI: 10.3390/molecules27020409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/04/2022] [Accepted: 01/07/2022] [Indexed: 11/16/2022]
Abstract
Chitooligosaccharides, the degradation products of chitin and chitosan, possess anti-bacterial, anti-tumor, and anti-inflammatory activities. The enzymatic production of chitooligosaccharides may increase the interest in their potential biomedical or agricultural usability in terms of the safety and simplicity of the manufacturing process. Crab-eating monkey acidic chitinase (CHIA) is an enzyme with robust activity in various environments. Here, we report the efficient degradation of chitin and chitosan by monkey CHIA under acidic and high-temperature conditions. Monkey CHIA hydrolyzed α-chitin at 50 °C, producing N-acetyl-d-glucosamine (GlcNAc) dimers more efficiently than at 37 °C. Moreover, the degradation rate increased with a longer incubation time (up to 72 h) without the inactivation of the enzyme. Five substrates (α-chitin, colloidal chitin, P-chitin, block-type, and random-type chitosan substrates) were exposed to monkey CHIS at pH 2.0 or pH 5.0 at 50 °C. P-chitin and random-type chitosan appeared to be the best sources of GlcNAc dimers and broad-scale chitooligosaccharides, respectively. In addition, the pattern of the products from the block-type chitosan was different between pH conditions (pH 2.0 and pH 5.0). Thus, monkey CHIA can degrade chitin and chitosan efficiently without inactivation under high-temperature or low pH conditions. Our results show that certain chitooligosaccharides are enriched by using different substrates under different conditions. Therefore, the reaction conditions can be adjusted to obtain desired oligomers. Crab-eating monkey CHIA can potentially become an efficient tool in producing chitooligosaccharide sets for agricultural and biomedical purposes.
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Affiliation(s)
- Maiko Uehara
- Department of Chemistry and Life Science, Kogakuin University, Tokyo 192-0015, Japan; (M.U.); (C.T.); (S.W.); (Y.S.); (E.T.)
| | - Chinatsu Takasaki
- Department of Chemistry and Life Science, Kogakuin University, Tokyo 192-0015, Japan; (M.U.); (C.T.); (S.W.); (Y.S.); (E.T.)
| | - Satoshi Wakita
- Department of Chemistry and Life Science, Kogakuin University, Tokyo 192-0015, Japan; (M.U.); (C.T.); (S.W.); (Y.S.); (E.T.)
| | - Yasusato Sugahara
- Department of Chemistry and Life Science, Kogakuin University, Tokyo 192-0015, Japan; (M.U.); (C.T.); (S.W.); (Y.S.); (E.T.)
| | - Eri Tabata
- Department of Chemistry and Life Science, Kogakuin University, Tokyo 192-0015, Japan; (M.U.); (C.T.); (S.W.); (Y.S.); (E.T.)
- Japan Society for the Promotion of Science (PD), Tokyo 102-0083, Japan
| | - Vaclav Matoska
- Laboratory of Molecular Diagnostics, Department of Clinical Biochemistry, Hematology and Immunology, Homolka Hospital, Roentgenova 37/2, 150 00 Prague, Czech Republic; (V.M.); (P.O.B.)
| | - Peter O. Bauer
- Laboratory of Molecular Diagnostics, Department of Clinical Biochemistry, Hematology and Immunology, Homolka Hospital, Roentgenova 37/2, 150 00 Prague, Czech Republic; (V.M.); (P.O.B.)
- Bioinova JSC, Videnska 1083, 142 20 Prague, Czech Republic
| | - Fumitaka Oyama
- Department of Chemistry and Life Science, Kogakuin University, Tokyo 192-0015, Japan; (M.U.); (C.T.); (S.W.); (Y.S.); (E.T.)
- Correspondence:
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8
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Khokhani D, Carrera Carriel C, Vayla S, Irving TB, Stonoha-Arther C, Keller NP, Ané JM. Deciphering the Chitin Code in Plant Symbiosis, Defense, and Microbial Networks. Annu Rev Microbiol 2021; 75:583-607. [PMID: 34623896 DOI: 10.1146/annurev-micro-051921-114809] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Chitin is a structural polymer in many eukaryotes. Many organisms can degrade chitin to defend against chitinous pathogens or use chitin oligomers as food. Beneficial microorganisms like nitrogen-fixing symbiotic rhizobia and mycorrhizal fungi produce chitin-based signal molecules called lipo-chitooligosaccharides (LCOs) and short chitin oligomers to initiate a symbiotic relationship with their compatible hosts and exchange nutrients. A recent study revealed that a broad range of fungi produce LCOs and chitooligosaccharides (COs), suggesting that these signaling molecules are not limited to beneficial microbes. The fungal LCOs also affect fungal growth and development, indicating that the roles of LCOs beyond symbiosis and LCO production may predate mycorrhizal symbiosis. This review describes the diverse structures of chitin; their perception by eukaryotes and prokaryotes; and their roles in symbiotic interactions, defense, and microbe-microbe interactions. We also discuss potential strategies of fungi to synthesize LCOs and their roles in fungi with different lifestyles.
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Affiliation(s)
- Devanshi Khokhani
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; , , , , , .,Current affiliation: Department of Plant Pathology, University of Minnesota, Saint Paul, Minnesota 55108, USA;
| | - Cristobal Carrera Carriel
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; , , , , ,
| | - Shivangi Vayla
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; , , , , ,
| | - Thomas B Irving
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; , , , , ,
| | - Christina Stonoha-Arther
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; , , , , ,
| | - Nancy P Keller
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; , , , , , .,Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - Jean-Michel Ané
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA; , , , , , .,Department of Agronomy, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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9
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Jiang JH, Wu SH, Zhou LW. The First Whole Genome Sequencing of Sanghuangporus sanghuang Provides Insights into Its Medicinal Application and Evolution. J Fungi (Basel) 2021; 7:jof7100787. [PMID: 34682209 PMCID: PMC8537844 DOI: 10.3390/jof7100787] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/16/2021] [Accepted: 09/21/2021] [Indexed: 01/06/2023] Open
Abstract
Sanghuangporus is a medicinal macrofungal genus typified by S. sanghuang, the very species utilized in traditional Chinese medicines by Chinese ancient people. To facilitate the medicinal application of S. sanghuang, we, for the first time, perform its genome sequencing and analyses from a monokaryon strain. A 33.34 Mb genome sequence was assembled to 26 contigs, which lead to the prediction of 8278 protein-coding genes. From these genes, the potential biosynthesis pathway of sesquiterpenoids was, for the first time, identified from Sanghuangporus, besides that of triterpenoids. While polysaccharides are the main medicinal metabolites in S. sanghuang, flavonoids are especially abundant medicinal metabolites comparing with other medicinal macrofungal groups. From the genomic perspective, S. sanghuang has a tetrapolar heterothallic mating system, and has its special nutritional strategy and advantageous medicinal properties compared with S. baumii and S. vaninii. A phylogenomics analysis indicates that Sanghuangporus emerged 15.39 million years ago and S. sanghuang has a closer phylogenetic relationship with S. baumii than S. vaninii. However, S. sanghuang shares a higher region of synteny and more orthologous genes, including carbohydrate-active enzymes with S. vaninii than S. baumii. A comparative genomics analysis with S. baumii and S. vaninii indicates that species diversification within Sanghuangporus may be driven by the translocation and translocation plus inversion of genome sequences, while the expansion and contraction of gene families may contribute to the host specificity of Sanghuangporus species. In general, the genome sequence of S. sanghuang provides insights into its medicinal application and evolution.
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Affiliation(s)
- Ji-Hang Jiang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China;
| | - Sheng-Hua Wu
- Department of Biology, National Museum of Natural Science, Taichung 404, China;
| | - Li-Wei Zhou
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China;
- Correspondence:
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10
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Liu C, Yan S, Zhao J, Lin M, Duan B, Zhang Z, Yang Y, Liu Z, Yuan S. An Aspergillus nidulans endo-β-1,3-glucanase exhibited specific catalytic features and was used to prepare 3-O-β-cellobiosyl-d-glucose and 3-O-β-gentiobiosyl-d-glucose with high antioxidant activity from barley β-glucan and laminarin, respectively. Int J Biol Macromol 2021; 186:424-432. [PMID: 34246678 DOI: 10.1016/j.ijbiomac.2021.07.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/07/2021] [Accepted: 07/07/2021] [Indexed: 12/01/2022]
Abstract
An endo-β-1,3(4)-glucanase AnENG16A from Aspergillus nidulans shows distinctive catalytic features for hydrolysis of β-glucans. AnENG16A hydrolyzed Eisenia bicyclis laminarin to mainly generate 3-O-β-gentiobiosyl-d-glucose and hydrolyzed barley β-glucan to mainly produce 3-O-β-cellobiosyl-d-glucose. Using molecular exclusion chromatography, we isolated and purified 3-O-β-cellobiosyl-d-glucose and 3-O-β-gentiobiosyl-d-glucose, respectively, from AnENG16A-hydrolysate of barley β-glucan and E. bicyclis laminarin. Further study reveals that 3-O-β-cellobiosyl-d-glucose had 8.99-fold higher antioxidant activity than barley β-glucan and 3-O-β-gentiobiosyl-d-glucose exhibited 43.0% higher antioxidant activity than E. bicyclis laminarin. Notably, 3-O-β-cellobiosyl-d-glucose and 3-O-β-gentiobiosyl-d-glucose exhibited 148.9% and 116.0% higher antioxidant activity than laminaritriose, respectively, indicating that β-1,4-linkage or -1,6-linkage at non-reducing end of β-glucotrioses had enhancing effect on antioxidant activity compared to β-1,3-linkage. Furthermore, 3-O-β-cellobiosyl-d-glucose showed 237.9% higher antioxidant activity than cellotriose, and laminarin showed 5.06-fold higher antioxidant activity than barley β-glucan, indicating that β-1,4-linkage at reducing end of β-glucans or oligosaccharides resulted in decrease of antioxidant activity compared to β-1,3-linkage.
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Affiliation(s)
- Cuicui Liu
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Songling Yan
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Jing Zhao
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Miao Lin
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Baiyun Duan
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China
| | - Zhenqing Zhang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, PR China
| | - Yao Yang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, 2 Xuelin Road, Nanjing, Jiangsu 210023, PR China.
| | - Zhonghua Liu
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China.
| | - Sheng Yuan
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing, Jiangsu 210023, PR China.
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11
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Kopplin G, Lervik A, Draget KI, Aachmann FL. Alginate gels crosslinked with chitosan oligomers - a systematic investigation into alginate block structure and chitosan oligomer interaction. RSC Adv 2021; 11:13780-13798. [PMID: 35423937 PMCID: PMC8697632 DOI: 10.1039/d1ra01003d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 03/30/2021] [Indexed: 11/21/2022] Open
Abstract
Three alginates with fundamentally different block structures, poly-M, poly-G, and poly-MG, have been investigated upon ionic crosslinking with chitosan oligosaccharides (CHOS), using circular dichroism (CD), rheology, and computer simulations, supporting the previously proposed gelling principle of poly-M forming zipper-like junction zones with chitosan (match in charge distance along the two polyelectrolytes) and revealing a unique high gel strength poly-MG chitosan gelling system. CD spectroscopy revealed an increased chiroptical activity exclusively for the poly-M chitosan gelling system, indicative of induced conformational changes and higher ordered structures. Rheological measurement revealed gel strengths (G' < 900 Pa) for poly-MG (1%) CHOS (0.3%) hydrogels, magnitudes of order greater than displayed by its poly-M analogue. Furthermore, the ionically crosslinked poly-MG chitosan hydrogel increased in gel strength upon the addition of salt (G' < 1600 at 50 mM NaCl), suggesting a stabilization of the junction zones through hydrophobic interactions and/or a phase separation. Molecular dynamics simulations have been used to further investigate these findings, comparing interaction energies, charge distances and chain alignments. These alginates are displaying high gel strengths, are known to be fully biocompatible and have revealed a broad range of tolerance to salt concentrations present in biological systems, proving high relevance for biomedical applications.
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Affiliation(s)
- Georg Kopplin
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology, Norwegian University of Science and Technology 7491 Trondheim Norway
| | - Anders Lervik
- Department of Chemistry, Norwegian University of Science and Technology 7491 Trondheim Norway
| | - Kurt I Draget
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology, Norwegian University of Science and Technology 7491 Trondheim Norway
| | - Finn L Aachmann
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology, Norwegian University of Science and Technology 7491 Trondheim Norway
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12
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Kumara BN, Shambhu R, Prasad KS. Why chitosan could be apt candidate for glaucoma drug delivery - An overview. Int J Biol Macromol 2021; 176:47-65. [PMID: 33581206 DOI: 10.1016/j.ijbiomac.2021.02.057] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/03/2021] [Accepted: 02/07/2021] [Indexed: 12/15/2022]
Abstract
Most of the people in the world are affected by glaucoma, which leads to irreversible blindness. Several patient friendly treatments are available, nevertheless medications lack an easy and efficient way of sustained delivery. To make the delivery with enhanced bioavailability, biodegradable and non-biodegradable polymers-based drug carriers are explored. However, ocular drug delivery issues have not been resolved yet due to less adhesiveness, poor penetration ability, pH, and temperature dependent burst releases. Chitosan is found to be effective for ocular drug delivery due to excellent physio-chemical properties in terms of overcoming the existing issues. In this review, we aim to highlight why it has been chosen and the holy grail for ocular drug delivery. Besides, we have comprehensively reviewed recent patents on chitosan as a platform for ocular drug delivery and future perspectives on factors, lacunae and challenges that need to be addressed for better ocular delivery methods for glaucoma management.
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Affiliation(s)
- B N Kumara
- Nanomaterial Research Laboratory [NMRL], Nano Division, Yenepoya Research Centre, Yenepoya [Deemed to be University], Deralakatte, Mangalore 575 018, India
| | - Rashmi Shambhu
- Department of Ophthalmology, Yenepoya Medical College, Yenepoya [Deemed to be University], Deralakatte, Mangalore 575 018, India
| | - K Sudhakara Prasad
- Nanomaterial Research Laboratory [NMRL], Nano Division, Yenepoya Research Centre, Yenepoya [Deemed to be University], Deralakatte, Mangalore 575 018, India; Centre for Nutrition Studies, Yenepoya [Deemed to be University], Deralakatte, Mangalore 575 018, India.
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13
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Jitprasertwong P, Khamphio M, Petsrichuang P, Eijsink VGH, Poolsri W, Muanprasat C, Rangnoi K, Yamabhai M. Anti-inflammatory activity of soluble chito-oligosaccharides (CHOS) on VitD3-induced human THP-1 monocytes. PLoS One 2021; 16:e0246381. [PMID: 33534833 PMCID: PMC7857634 DOI: 10.1371/journal.pone.0246381] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 01/18/2021] [Indexed: 01/21/2023] Open
Abstract
Chito-oligosaccharides (CHOS) are oligomers of D-glucosamine and N-acetyl-glucosamine. Anti-inflammatory activities of a wide variety of CHOS mixtures have previously been reported, mainly based on studies with mouse models and murine macrophages. Since the mouse and human immune systems are quite different, gaining insight into the activity of CHOS on human cell lines, using well-characterized CHOS mixtures, is of considerable interest. Bacillus subtilis chitosanase (BsCsn46A) can efficiently convert chitosan to mixtures of water soluble low molecular weight CHOS. Here, the anti-inflammatory activity of a properly characterized CHOS mixture was studied, using human THP-1 cells that were differentiated to mature monocytes using vitamin D3. Addition of CHOS reduced the production of multiple pro-inflammatory cytokines associated with bacterial lipopolyssacharide (LPS)-stimulated inflammation, in a dose-dependent manner and without affecting cell viability. Interestingly, only minimal effects of CHOS were observed in similar experiments with phorbol 12-myristate 13-acetate- (PMA-) differentiated, macrophage-like, THP-1 cells. Altogether, in addition to showing promising biological effects of well-characterized low molecular weight soluble CHOS in a human system, the present study also points at Vitamin D3-stimulated THP-1 cells as a favorable system for assessing the anti-inflammatory activity of bioactive compounds.
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Affiliation(s)
- Paiboon Jitprasertwong
- School of Geriatric Oral Health, Institute of Dentistry, Suranaree University of Technology (SUT), Nakhon Ratchasima, Thailand
| | - Munthipha Khamphio
- Molecular Biotechnology Laboratory, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology (SUT), Nakhon Ratchasima, Thailand
| | - Phornsiri Petsrichuang
- Molecular Biotechnology Laboratory, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology (SUT), Nakhon Ratchasima, Thailand
| | - Vincent G. H. Eijsink
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Wanangkan Poolsri
- Faculty of Medicine, Chakri Naruebodindra Medical Institute, Ramathibodi Hospital, Mahidol University, Samutprakarn, Thailand
| | - Chatchai Muanprasat
- Faculty of Medicine, Chakri Naruebodindra Medical Institute, Ramathibodi Hospital, Mahidol University, Samutprakarn, Thailand
| | - Kuntalee Rangnoi
- Molecular Biotechnology Laboratory, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology (SUT), Nakhon Ratchasima, Thailand
| | - Montarop Yamabhai
- Molecular Biotechnology Laboratory, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology (SUT), Nakhon Ratchasima, Thailand
- * E-mail:
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14
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Kidibule PE, Costa J, Atrei A, Plou FJ, Fernandez-Lobato M, Pogni R. Production and characterization of chitooligosaccharides by the fungal chitinase Chit42 immobilized on magnetic nanoparticles and chitosan beads: selectivity, specificity and improved operational utility. RSC Adv 2021; 11:5529-5536. [PMID: 35423100 PMCID: PMC8694723 DOI: 10.1039/d0ra10409d] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/25/2021] [Indexed: 12/21/2022] Open
Abstract
Chitin-active enzymes are of great biotechnological interest due to the wide industrial application of chitinolytic materials. Non-stability and high cost are among limitations that hinder industrial application of soluble enzymes. Here we report the production and characterization of chitooligosaccharides (COS) using the fungal exo-chitinase Chit42 immobilized on magnetic nanoparticles and food-grade chitosan beads with an immobilization yield of about 60% using glutaraldehyde and genipin linkers. The immobilized enzyme gained operational stability with increasing temperature and acidic pH values, especially when using chitosan beads-genipin that retained more than 80% activity at pH 3. Biocatalysts generated COS from colloidal chitin and different chitosan types. The immobilized enzyme showed higher hydrolytic activity than free enzyme on chitosan, and produced COS mixtures with higher variability of size and acetylation degree. In addition, biocatalysts were reusable, easy to handle and to separate from the reaction mixture.
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Affiliation(s)
- Peter E Kidibule
- Department of Molecular Biology, Centre for Molecular Biology Severo Ochoa (CSIC-UAM), University Autonomous from Madrid Nicolás Cabrera, 1. Cantoblanco 28049 Madrid Spain
| | - Jessica Costa
- Department of Biotechnology, Chemistry and Pharmacy, Università di Siena Via A. Moro 2 53100 Siena Italy
| | - Andrea Atrei
- Department of Biotechnology, Chemistry and Pharmacy, Università di Siena Via A. Moro 2 53100 Siena Italy
| | - Francisco J Plou
- Institute of Catalysis and Petrochemistry, CSIC Marie Curie, 2. Cantoblanco 28049 Madrid Spain
| | - Maria Fernandez-Lobato
- Department of Molecular Biology, Centre for Molecular Biology Severo Ochoa (CSIC-UAM), University Autonomous from Madrid Nicolás Cabrera, 1. Cantoblanco 28049 Madrid Spain
| | - Rebecca Pogni
- Department of Biotechnology, Chemistry and Pharmacy, Università di Siena Via A. Moro 2 53100 Siena Italy
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15
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Novel Potential Application of Chitosan Oligosaccharide for Attenuation of Renal Cyst Growth in the Treatment of Polycystic Kidney Disease. Molecules 2020; 25:molecules25235589. [PMID: 33261193 PMCID: PMC7730275 DOI: 10.3390/molecules25235589] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/18/2020] [Accepted: 11/18/2020] [Indexed: 12/17/2022] Open
Abstract
Chitosan oligosaccharide (COS), a natural polymer derived from chitosan, exerts several biological activities including anti-inflammation, anti-tumor, anti-metabolic syndrome, and drug delivery enhancer. Since COS is vastly distributed to kidney and eliminated in urine, it may have a potential advantage as the therapeutics of kidney diseases. Polycystic kidney disease (PKD) is a common genetic disorder characterized by multiple fluid-filled cysts, replacing normal renal parenchyma and leading to impaired renal function and end-stage renal disease (ESRD). The effective treatment for PKD still needs to be further elucidated. Interestingly, AMP-activated protein kinase (AMPK) has been proposed as a drug target for PKD. This study aimed to investigate the effect of COS on renal cyst enlargement and its underlying mechanisms. We found that COS at the concentrations of 50 and 100 µg/mL decreased renal cyst growth without cytotoxicity, as measured by MTT assay. Immunoblotting analysis showed that COS at 100 µg/mL activated AMPK, and this effect was abolished by STO-609, a calcium/calmodulin-dependent protein kinase kinase beta (CaMKKβ) inhibitor. Moreover, COS elevated the level of intracellular calcium. These results suggest that COS inhibits cyst progression by activation of AMPK via CaMKKβ. Therefore, COS may hold the potential for pharmaceutical application in PKD.
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Draget KI, Christensen BE. In memory of Professor Kjell M. Vårum. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Glycoside hydrolase family 18 chitinases: The known and the unknown. Biotechnol Adv 2020; 43:107553. [DOI: 10.1016/j.biotechadv.2020.107553] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/09/2020] [Accepted: 04/20/2020] [Indexed: 12/13/2022]
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18
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Preparation of Defined Chitosan Oligosaccharides Using Chitin Deacetylases. Int J Mol Sci 2020; 21:ijms21217835. [PMID: 33105791 PMCID: PMC7660110 DOI: 10.3390/ijms21217835] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 10/19/2020] [Indexed: 12/13/2022] Open
Abstract
During the past decade, detailed studies using well-defined 'second generation' chitosans have amply proved that both their material properties and their biological activities are dependent on their molecular structure, in particular on their degree of polymerisation (DP) and their fraction of acetylation (FA). Recent evidence suggests that the pattern of acetylation (PA), i.e., the sequence of acetylated and non-acetylated residues along the linear polymer, is equally important, but chitosan polymers with defined, non-random PA are not yet available. One way in which the PA will influence the bioactivities of chitosan polymers is their enzymatic degradation by sequence-dependent chitosan hydrolases present in the target tissues. The PA of the polymer substrates in conjunction with the subsite preferences of the hydrolases determine the type of oligomeric products and the kinetics of their production and further degradation. Thus, the bioactivities of chitosan polymers will at least in part be carried by the chitosan oligomers produced from them, possibly through their interaction with pattern recognition receptors in target cells. In contrast to polymers, partially acetylated chitosan oligosaccharides (paCOS) can be fully characterised concerning their DP, FA, and PA, and chitin deacetylases (CDAs) with different and known regio-selectivities are currently emerging as efficient tools to produce fully defined paCOS in quantities sufficient to probe their bioactivities. In this review, we describe the current state of the art on how CDAs can be used in forward and reverse mode to produce all of the possible paCOS dimers, trimers, and tetramers, most of the pentamers and many of the hexamers. In addition, we describe the biotechnological production of the required fully acetylated and fully deacetylated oligomer substrates, as well as the purification and characterisation of the paCOS products.
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19
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Li RK, Hu YJ, He YJ, Ng TB, Zhou ZM, Ye XY. A thermophilic chitinase 1602 from the marine bacterium Microbulbifer sp. BN3 and its high-level expression in Pichia pastoris. Biotechnol Appl Biochem 2020; 68:1076-1085. [PMID: 32924196 DOI: 10.1002/bab.2027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 09/07/2020] [Indexed: 11/12/2022]
Abstract
Chitinases play an important role in many industrial processes, including the preparation of oligosaccharides with potential applications. In the present study, a 1,713 bp gene of Chi1602, derived from a marine bacterium Microbulbifer sp. BN3, encoding a GH18 family chitinase, was expressed at high levels in Pichia pastoris. Distinct from most of the marine chitinases, the recombinant chitinase 1602 exhibited maximal activity at 60 °C and over a broad pH range between 5.0 and 9.0, and was stable at 50 °C and over the pH range 4.0-9.0. The hydrolytic products derived from colloidal chitins comprised mainly (GlcNAc)2 and GlcNAc, indicating that rChi1602 is a GH18 processive chitinase in conformity with its hypothetical structure. However, rChi1602 showed traces of β-N-acetylglucosaminidase activity on substrates such as powder chitin, chitosan, and ethylene glycol chitin. The thermophilic rChi1602, which manifests adaptation to a wide pH range and can be expressed at a high level in P. pastoris, is advantageous for applications in industrial processes.
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Affiliation(s)
- Ren Kuan Li
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, People's Republic of China.,National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou, Fujian, People's Republic of China
| | - Ya Juan Hu
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, People's Republic of China
| | - Yu Jie He
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, People's Republic of China
| | - Tzi Bun Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
| | - Zhi Min Zhou
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, People's Republic of China
| | - Xiu Yun Ye
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou, Fujian, People's Republic of China.,National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou, Fujian, People's Republic of China
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20
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Kumar M, Rajput M, Soni T, Vivekanand V, Pareek N. Chemoenzymatic Production and Engineering of Chitooligosaccharides and N-acetyl Glucosamine for Refining Biological Activities. Front Chem 2020; 8:469. [PMID: 32671017 PMCID: PMC7329927 DOI: 10.3389/fchem.2020.00469] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 05/05/2020] [Indexed: 01/07/2023] Open
Abstract
Chitooligosaccharides (COS) and N-acetyl glucosamine (GlcNAc) are currently of enormous relevance to pharmaceutical, nutraceutical, cosmetics, food, and agriculture industries due to their wide range of biological activities, which include antimicrobial, antitumor, antioxidant, anticoagulant, wound healing, immunoregulatory, and hypocholesterolemic effects. A range of methods have been developed for the synthesis of COS with a specific degree of polymerization along with high production titres. In this respect, chemical, enzymatic, and microbial means, along with modern genetic manipulation techniques, have been extensively explored; however no method has been able to competently produce defined COS and GlcNAc in a mono-system approach. Henceforth, the chitin research has turned toward increased exploration of chemoenzymatic processes for COS and GlcNAc generation. Recent developments in the area of green chemicals, mainly ionic liquids, proved vital for the specified COS and GlcNAc synthesis with better yield and purity. Moreover, engineering of COS and GlcNAc to generate novel derivatives viz. carboxylated, sulfated, phenolic acid conjugated, amino derived COS, etc., further improved their biological activities. Consequently, chemoenzymatic synthesis and engineering of COS and GlcNAc emerged as a useful approach to lead the biologically-active compound-based biomedical research to an advanced prospect in the forthcoming era.
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Affiliation(s)
- Manish Kumar
- Microbial Catalysis and Process Engineering Laboratory, Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Ajmer, India
| | - Meenakshi Rajput
- Microbial Catalysis and Process Engineering Laboratory, Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Ajmer, India
| | - Twinkle Soni
- Microbial Catalysis and Process Engineering Laboratory, Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Ajmer, India
| | - Vivekanand Vivekanand
- Centre for Energy and Environment, Malaviya National Institute of Technology, Jaipur, India
| | - Nidhi Pareek
- Microbial Catalysis and Process Engineering Laboratory, Department of Microbiology, School of Life Sciences, Central University of Rajasthan, Ajmer, India
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22
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Cord-Landwehr S, Richter C, Wattjes J, Sreekumar S, Singh R, Basa S, El Gueddari NE, Moerschbacher BM. Patterns matter part 2: Chitosan oligomers with defined patterns of acetylation. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104577] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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23
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Li RK, Hu YJ, Ng TB, Guo BQ, Zhou ZH, Zhao J, Ye XY. Expression and biochemical characterization of a novel chitinase ChiT-7 from the metagenome in the soil of a mangrove tidal flat in China. Int J Biol Macromol 2020; 158:1125-1134. [PMID: 32360969 DOI: 10.1016/j.ijbiomac.2020.04.242] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 04/25/2020] [Accepted: 04/27/2020] [Indexed: 12/18/2022]
Abstract
Chitinases play an important role in the process of chitin bioavailability. In this study, we cloned a new chitinase gene and characterized its recombinant protein. The new 1251 bp gene of chitinase (ChiT-7) was cloned from the metagenome of the mangrove tidal flat soil in the city of Zhangzhou in Fujian Province (China) by genome walking. The gene encoded a mature protein with 381 amino acids, which manifested certain sequence similarity (59% identity) to characterized GH18 chitinases. The mature protein of ChiT-7 was successfully expressed in E. coli BL21 (DE3). After purification, the specific activity of the recombinant enzyme was 0.63 U/mg at the optimal pH of 6.0 and the optimal temperature of 45 °C. The rChiT-7 was active over a wide pH range, and the residual enzyme activity reached 80% or higher at 30 °C-50 °C. rChiT-7 hydrolyzed colloidal chitin with (GlcNAc)2 and GlcNAc as the main final products. Structural analysis of ChiT-7 indicated that ChiT-7 could be a processive chitinase. rChiT-7 manifested characteristics analogous to those of fungi and actinomycetes and exhibited sequence homology.
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Affiliation(s)
- Ren Kuan Li
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, PR China; National Engineering Laboratory for High-efficient Enzyme Expression, PR China
| | - Ya Juan Hu
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, PR China
| | - Tzi Bun Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Bing Qi Guo
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, PR China
| | - Zi He Zhou
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, PR China
| | - Jing Zhao
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, PR China
| | - Xiu Yun Ye
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, PR China; National Engineering Laboratory for High-efficient Enzyme Expression, PR China.
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Ambrosone A, Matteis LD, Serrano-Sevilla I, Tortiglione C, De La Fuente JM. Glycogen Synthase Kinase 3β Inhibitor Delivered by Chitosan Nanocapsules Promotes Safe, Fast, and Efficient Activation of Wnt Signaling In Vivo. ACS Biomater Sci Eng 2020; 6:2893-2903. [DOI: 10.1021/acsbiomaterials.9b01820] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Alfredo Ambrosone
- Instituto de Ciencia de Materiales de Aragón-CSIC/Universidad de Zaragoza and CIBER in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain
| | - Laura De Matteis
- CIBER-BBN, Instituto de Salud Carlos III, Madrid, Spain
- Instituto de Nanociencia de Aragón (INA), Universidad de Zaragoza, C/Mariano Esquillor s/n, 50018 Zaragoza, Spain
| | - Inés Serrano-Sevilla
- Instituto de Ciencia de Materiales de Aragón-CSIC/Universidad de Zaragoza and CIBER in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain
- CIBER-BBN, Instituto de Salud Carlos III, Madrid, Spain
| | - Claudia Tortiglione
- Istituto di scienze applicate e sistemi intelligenti “E. Caianiello”, Consiglio Nazionale delle Ricerche, Pozzuoli, Italy
| | - Jesús M. De La Fuente
- Instituto de Ciencia de Materiales de Aragón-CSIC/Universidad de Zaragoza and CIBER in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza, Spain
- CIBER-BBN, Instituto de Salud Carlos III, Madrid, Spain
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25
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Sørlie M, Horn SJ, Vaaje-Kolstad G, Eijsink VG. Using chitosan to understand chitinases and the role of processivity in the degradation of recalcitrant polysaccharides. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104488] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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26
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Activation of enzymatically produced chitooligosaccharides by dioxyamines and dihydrazides. Carbohydr Polym 2020; 232:115748. [DOI: 10.1016/j.carbpol.2019.115748] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/19/2019] [Accepted: 12/16/2019] [Indexed: 11/21/2022]
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27
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Arnold ND, Brück WM, Garbe D, Brück TB. Enzymatic Modification of Native Chitin and Conversion to Specialty Chemical Products. Mar Drugs 2020; 18:md18020093. [PMID: 32019265 PMCID: PMC7073968 DOI: 10.3390/md18020093] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/27/2020] [Accepted: 01/28/2020] [Indexed: 12/19/2022] Open
Abstract
Chitin is one of the most abundant biomolecules on earth, occurring in crustacean shells and cell walls of fungi. While the polysaccharide is threatening to pollute coastal ecosystems in the form of accumulating shell-waste, it has the potential to be converted into highly profitable derivatives with applications in medicine, biotechnology, and wastewater treatment, among others. Traditionally this is still mostly done by the employment of aggressive chemicals, yielding low quality while producing toxic by-products. In the last decades, the enzymatic conversion of chitin has been on the rise, albeit still not on the same level of cost-effectiveness compared to the traditional methods due to its multi-step character. Another severe drawback of the biotechnological approach is the highly ordered structure of chitin, which renders it nigh impossible for most glycosidic hydrolases to act upon. So far, only the Auxiliary Activity 10 family (AA10), including lytic polysaccharide monooxygenases (LPMOs), is known to hydrolyse native recalcitrant chitin, which spares the expensive first step of chemical or mechanical pre-treatment to enlarge the substrate surface. The main advantages of enzymatic conversion of chitin over conventional chemical methods are the biocompability and, more strikingly, the higher product specificity, product quality, and yield of the process. Products with a higher Mw due to no unspecific depolymerisation besides an exactly defined degree and pattern of acetylation can be yielded. This provides a new toolset of thousands of new chitin and chitosan derivatives, as the physio-chemical properties can be modified according to the desired application. This review aims to provide an overview of the biotechnological tools currently at hand, as well as challenges and crucial steps to achieve the long-term goal of enzymatic conversion of native chitin into specialty chemical products.
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Affiliation(s)
- Nathanael D. Arnold
- Werner Siemens Chair of Synthetic Biotechnology, Dept. of Chemistry, Technical University of Munich (TUM), 85748 Garching, Germany; (N.D.A.); (D.G.)
| | - Wolfram M. Brück
- Institute for Life Technologies, University of Applied Sciences Western Switzerland Valais-Wallis, 1950 Sion 2, Switzerland;
| | - Daniel Garbe
- Werner Siemens Chair of Synthetic Biotechnology, Dept. of Chemistry, Technical University of Munich (TUM), 85748 Garching, Germany; (N.D.A.); (D.G.)
| | - Thomas B. Brück
- Werner Siemens Chair of Synthetic Biotechnology, Dept. of Chemistry, Technical University of Munich (TUM), 85748 Garching, Germany; (N.D.A.); (D.G.)
- Correspondence:
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Antibiotic saving effect of combination therapy through synergistic interactions between well-characterized chito-oligosaccharides and commercial antifungals against medically relevant yeasts. PLoS One 2019; 14:e0227098. [PMID: 31891619 PMCID: PMC6938310 DOI: 10.1371/journal.pone.0227098] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/12/2019] [Indexed: 11/19/2022] Open
Abstract
Combination therapies can be a help to overcome resistance to current antifungals in humans. The combined activity of commercial antifungals and soluble and well-defined low molecular weight chitosan with average degrees of polymerization (DPn) of 17–62 (abbreviated C17 –C62) and fraction of acetylation (FA) of 0.15 against medically relevant yeast strains was studied. The minimal inhibitory concentration (MIC) of C32 varied greatly among strains, ranging from > 5000 μg mL-1 (Candida albicans and C. glabrata) to < 4.9 (C. tropicalis). A synergistic effect was observed between C32 and the different antifungals tested for most of the strains. Testing of several CHOS preparations indicated that the highest synergistic effects are obtained for fractions with a DPn in the 30–50 range. Pre-exposure to C32 enhanced the antifungal effect of fluconazole and amphotericin B. A concentration-dependent post-antifungal effect conserved even 24 h after C32 removal was observed. The combination of C32 and commercial antifungals together or as part of a sequential therapy opens new therapeutic perspectives for treating yeast infections in humans.
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Tabata E, Wakita S, Kashimura A, Sugahara Y, Matoska V, Bauer PO, Oyama F. Residues of acidic chitinase cause chitinolytic activity degrading chitosan in porcine pepsin preparations. Sci Rep 2019; 9:15609. [PMID: 31666642 PMCID: PMC6821832 DOI: 10.1038/s41598-019-52136-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 10/14/2019] [Indexed: 02/03/2023] Open
Abstract
Commercially available porcine pepsin preparations have been used for the production of chitooligosaccharides with various biomedical activities. However, the origin of this activity is not well understood. Here we show that the chitosan-degrading activity is conferred by residues with chitinolytic activity of truncated forms of acidic chitinase (Chia) persisting in the pepsin preparation. Chia is an acid-stable and pepsin-resistant enzyme that degrades chitin to produce N-acetyl-D-glucosamine dimer. We found that Chia can be truncated by pepsin under stomach-like conditions while maintaining its enzymatic activity. Similarly to the full-length protein, truncated Chia as well as the pepsin preparations digested chitosan with different degrees of deacetylation (DD: 69-84%) with comparable degradation products. The efficiency was DD-dependent with a marked decrease with higher DD, indicating that the chitosan-degrading activity in the pepsin preparation is due to the chitinolytic activity rather than chitosanolytic activity. We suggest that natural or recombinant porcine Chia are suitable for producing chitooligosaccharides for biomedical purposes.
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Affiliation(s)
- Eri Tabata
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo, 192-0015, Japan.,Research Fellow of Japan Society for the Promotion of Science (DC1), Koujimachi, Chiyoda-ku, Tokyo, 102-0083, Japan
| | - Satoshi Wakita
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo, 192-0015, Japan
| | - Akinori Kashimura
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo, 192-0015, Japan
| | - Yasusato Sugahara
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo, 192-0015, Japan
| | - Vaclav Matoska
- Laboratory of Molecular Diagnostics, Department of Clinical Biochemistry, Hematology and Immunology, Homolka Hospital, Roentgenova 37/2, Prague, 150 00, Czech Republic
| | - Peter O Bauer
- Laboratory of Molecular Diagnostics, Department of Clinical Biochemistry, Hematology and Immunology, Homolka Hospital, Roentgenova 37/2, Prague, 150 00, Czech Republic.,Bioinova Ltd., Videnska 1083, Prague, 142 20, Czech Republic
| | - Fumitaka Oyama
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo, 192-0015, Japan.
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Aktuganov GE, Melentiev AI, Varlamov VP. Biotechnological Aspects of the Enzymatic Preparation of Bioactive Chitooligosaccharides (Review). APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819040021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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31
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Zubair M, Wu J, Ullah A. Hybrid Bionanocomposites from Spent Hen Proteins. ACS OMEGA 2019; 4:3772-3781. [PMID: 31459589 PMCID: PMC6649139 DOI: 10.1021/acsomega.8b03501] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 02/05/2019] [Indexed: 06/10/2023]
Abstract
Spent hens, a poultry by-product, have little economic value for processing and mostly end up in landfills. However, there are concerns over disposal of spent hens; therefore, it is pertinent to find out alternative uses that are environmentally sound. On the other hand, single-use plastic packaging is leading to a global environmental crisis. In this study, proteins were extracted from spent hen, plasticized, and processed into films by compression molding. The hybrid bionanocomposite films were successfully prepared using glycerol as a plasticizer, chitosan as a cross-linker, and varying concentrations of nanoclay as a nanoreinforcement. The effects of nanoreinforcements, plasticization, and cross-linking were then evaluated on thermal, mechanical, and barrier properties of the prepared bionanocomposite films. Various concentrations of nanoclay and chitosan were dispersed in the protein matrix. However, with the same plasticizer loading, the optimum addition of chitosan and nanoclay led to almost twofold increase in the mechanical strength, compared to neat protein films. The results indicated that at optimal conditions, a good intercalation and/or exfoliation of the protein biopolymers into clay interlayer galleries was observed leading to improved thermal, thermomechanical, and barrier properties. These hybrid bionanocomposite films have great future potential to be used in packaging and other applications.
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Wattjes J, Niehues A, Cord-Landwehr S, Hoßbach J, David L, Delair T, Moerschbacher BM. Enzymatic Production and Enzymatic-Mass Spectrometric Fingerprinting Analysis of Chitosan Polymers with Different Nonrandom Patterns of Acetylation. J Am Chem Soc 2019; 141:3137-3145. [DOI: 10.1021/jacs.8b12561] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jasper Wattjes
- Institute for Biology and Biotechnology of Plants, University of Muenster, Schlossplatz 8, 48143 Münster, Germany
| | - Anna Niehues
- Institute for Biology and Biotechnology of Plants, University of Muenster, Schlossplatz 8, 48143 Münster, Germany
| | - Stefan Cord-Landwehr
- Institute for Biology and Biotechnology of Plants, University of Muenster, Schlossplatz 8, 48143 Münster, Germany
| | - Janina Hoßbach
- Institute for Biology and Biotechnology of Plants, University of Muenster, Schlossplatz 8, 48143 Münster, Germany
| | - Laurent David
- Laboratoire Ingénierie des Matériaux Polymères (IMP), CNRS UMR 5223, Université Lyon, Université Claude Bernard Lyon 1, 15 bd A Latarjet, 69622 Villeurbanne, France
| | - Thierry Delair
- Laboratoire Ingénierie des Matériaux Polymères (IMP), CNRS UMR 5223, Université Lyon, Université Claude Bernard Lyon 1, 15 bd A Latarjet, 69622 Villeurbanne, France
| | - Bruno M. Moerschbacher
- Institute for Biology and Biotechnology of Plants, University of Muenster, Schlossplatz 8, 48143 Münster, Germany
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Ganan M, Lorentzen SB, Agger JW, Heyward CA, Bakke O, Knutsen SH, Aam BB, Eijsink VGH, Gaustad P, Sørlie M. Antifungal activity of well-defined chito-oligosaccharide preparations against medically relevant yeasts. PLoS One 2019; 14:e0210208. [PMID: 30620751 PMCID: PMC6324834 DOI: 10.1371/journal.pone.0210208] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 12/18/2018] [Indexed: 11/19/2022] Open
Abstract
Due to their antifungal activity, chitosan and its derivatives have potential to be used for treating yeast infections in humans. However, to be considered for use in human medicine, it is necessary to control and know the chemical composition of the compound, which is not always the case for polymeric chitosans. Here, we analyze the antifungal activity of a soluble and well-defined chito-oligosaccharide (CHOS) with an average polymerization degree (DPn) of 32 and fraction of acetylation (FA) of 0.15 (C32) on 52 medically relevant yeast strains. Minimal inhibitory concentrations (MIC) varied widely among yeast species, strains and isolates (from > 5000 to < 9.77 μg mL-1) and inhibition patterns showed a time- and dose-dependencies. The antifungal activity was predominantly fungicidal and was inversely proportional to the pH, being maximal at pH 4.5, the lowest tested pH. Furthermore, antifungal effects of CHOS fractions with varying average molecular weight indicated that those fractions with an intermediate degree of polymerization, i.e. DP 31 and 54, had the strongest inhibitory effects. Confocal imaging showed that C32 adsorbs to the cell surface, with subsequent cell disruption and accumulation of C32 in the cytoplasm. Thus, C32 has potential to be used as a therapy for fungal infections.
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Affiliation(s)
- Monica Ganan
- Department of Chemistry, Biotechnology, and Food Science, Norwegian University of Life Sciences, Aas, Norway
- Institute of Clinical Medicine, Department of Microbiology, University of Oslo, Blindern, Oslo, Norway
| | - Silje B. Lorentzen
- Department of Chemistry, Biotechnology, and Food Science, Norwegian University of Life Sciences, Aas, Norway
| | - Jane W. Agger
- Department of Chemistry, Biotechnology, and Food Science, Norwegian University of Life Sciences, Aas, Norway
| | | | - Oddmund Bakke
- Department of Biosciences, University of Oslo, Blindern, Oslo, Norway
| | - Svein H. Knutsen
- Nofima, Norwegian Institute of Food Fisheries & Aquaculture Research, Aas, Norway
| | - Berit B. Aam
- Department of Chemistry, Biotechnology, and Food Science, Norwegian University of Life Sciences, Aas, Norway
| | - Vincent G. H. Eijsink
- Department of Chemistry, Biotechnology, and Food Science, Norwegian University of Life Sciences, Aas, Norway
| | - Peter Gaustad
- Institute of Clinical Medicine, Department of Microbiology, University of Oslo, Blindern, Oslo, Norway
| | - Morten Sørlie
- Department of Chemistry, Biotechnology, and Food Science, Norwegian University of Life Sciences, Aas, Norway
- * E-mail:
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Zhou J, Dai R, Wang Y, Li M, Zhu Y, Chen L, Kang L, Liu Z, Yang Y, Yuan S. A novel thermophilic exochitinase ChiEn3 from Coprinopsis cinerea exhibits a hyperhydrolytic activity toward 85% deacetylated chitosan and a significant application to preparation of chitooligosaccharides from the chitosan. Carbohydr Polym 2018; 207:729-736. [PMID: 30600059 DOI: 10.1016/j.carbpol.2018.12.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 12/12/2018] [Accepted: 12/16/2018] [Indexed: 01/13/2023]
Abstract
ChiEn3 from Coprinopsis cinerea was characterized as an exo-acting chitinase with a processivity. ChiEn3 hydrolyzed only soluble chitin and exhibited a hyperhydrolytic activity toward 85% deacetylated chitosan which was 33.6-fold higher than its hydrolytic activity toward glycol chitin. Its maximum hydrolytic activity was observed at 60 °C and retained 66.2% of hydrolytic activity after 60 min incubation at 60 °C. Commercial 85% deacetylated chitosan was degraded by ChiEn3 to a series of COSs with a DP of 2-20 in which COSs with a DP of 3-6 were dominant, whereas, lab-prepared chitosan (FA = 0.65) was degraded by ChiEn3 to COSs with a DP of 2-10 in which the AA dimer was dominant. DPPH-radical-scavenging activity of ChiEn3-digested products of 85% deacetylated chitosan was 3.32-fold higher than that of undigested 85% deacetylated chitosan. Therefore, ChiEn3 shows a valuable advantage for application to the preparation of COSs from commercial 85% deacetylated chitosan.
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Affiliation(s)
- Jiangsheng Zhou
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China
| | - Rujuan Dai
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China
| | - Yanxin Wang
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China
| | - Maomao Li
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China
| | - Yiting Zhu
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China
| | - Lingling Chen
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China
| | - Liqin Kang
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China
| | - Zhonghua Liu
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China
| | - Yao Yang
- Ginling College, Nanjing Normal University, 122 Ninghai Road, Nanjing, 210097, PR China
| | - Sheng Yuan
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China.
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Zhou J, Chen L, Kang L, Liu Z, Bai Y, Yang Y, Yuan S. ChiE1 from Coprinopsis cinerea is Characterized as a Processive Exochitinase and Revealed to Have a Significant Synergistic Action with Endochitinase ChiIII on Chitin Degradation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:12773-12782. [PMID: 30404442 DOI: 10.1021/acs.jafc.8b04261] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fruiting bodies that exhibit strong autolysis of Coprinopsis cinerea are a good resource for the chitinolytic system. In this study, a new Chitinase ChiE1 from C. cinerea was cloned, heterologously expressed, and characterized. Biochemical analysis demonstrated that ChiE1 is an exochitinase with a processive mode of action. Although ChiE1 contains only a single catalytic domain without a binding domain, it can bind to and degrade insoluble chitin powder and colloidal chitin. The combination of ChiE1 and C. cinerea endochitinase ChiIII could increase the amount of reducing sugar released from chitin powder by approximately 120% compared to using ChiE1 and ChiIII alone. The synergistic action of ChiE1 and ChiIII on degradation of chitin powder is higher than all previously reported synergism of chitinases. The recombinant Chitinase ChiE1 expressed in Pichia pastoris may be used as a synergistic chitinase for a reconstituted chitinolytic system for agricultural, biological, and environmental applications.
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Affiliation(s)
- Jiangsheng Zhou
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science , Nanjing Normal University , 1 Wenyuan Road , Nanjing 210023 , PR China
| | - Lingling Chen
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science , Nanjing Normal University , 1 Wenyuan Road , Nanjing 210023 , PR China
| | - Liqin Kang
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science , Nanjing Normal University , 1 Wenyuan Road , Nanjing 210023 , PR China
| | - Zhonghua Liu
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science , Nanjing Normal University , 1 Wenyuan Road , Nanjing 210023 , PR China
| | - Yang Bai
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science , Nanjing Normal University , 1 Wenyuan Road , Nanjing 210023 , PR China
| | - Yao Yang
- Ginling College , Nanjing Normal University , 122 Ninghai Road , Nanjing 210097 , PR China
| | - Sheng Yuan
- Jiangsu Key Laboratory for Microbes and Microbial Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Science , Nanjing Normal University , 1 Wenyuan Road , Nanjing 210023 , PR China
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36
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Poshina DN, Raik SV, Poshin AN, Skorik YA. Accessibility of chitin and chitosan in enzymatic hydrolysis: A review. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.09.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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37
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Cui G, Guo J, Zhang Y, Zhao Q, Fu S, Han T, Zhang S, Wu Y. Chitosan oligosaccharide derivatives as green corrosion inhibitors for P110 steel in a carbon-dioxide-saturated chloride solution. Carbohydr Polym 2018; 203:386-395. [PMID: 30318227 DOI: 10.1016/j.carbpol.2018.09.038] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/16/2018] [Accepted: 09/18/2018] [Indexed: 12/23/2022]
Abstract
Two chitosan oligosaccharide derivatives (PHC and BHC) were synthesized for use as corrosion inhibitors. They were characterized using Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). The inhibition efficiency of PHC and BHC on P110 steel corrosion in a 3.5 wt.% NaCl CO2-saturated solution at 80℃ was studied using gravimetric measurement, scanning electron microscopy (SEM), atomic force microscopy (AFM), electrochemical analysis, and quantum chemical calculation. The results indicated that inhibition efficiency increased with increasing concentration of inhibitor. Energy dispersive X-ray (EDX), contact angle, and electrochemical impedance spectroscopy (EIS) measurements showed that the inhibitors had been successfully adsorbed to the surface of the P110 steel. The results of potentiodynamic polarization indicated that both compounds were mixed-type inhibitors.
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Affiliation(s)
- Guodong Cui
- Enhanced Oil Recovery Institute, China University of Petroleum, Beijing 102249, China
| | - Jixiang Guo
- Enhanced Oil Recovery Institute, China University of Petroleum, Beijing 102249, China.
| | - Yu Zhang
- Enhanced Oil Recovery Institute, China University of Petroleum, Beijing 102249, China
| | - Qing Zhao
- Enhanced Oil Recovery Institute, China University of Petroleum, Beijing 102249, China
| | - Shunkang Fu
- Enhanced Oil Recovery Institute, China University of Petroleum, Beijing 102249, China
| | - Tong Han
- Enhanced Oil Recovery Institute, China University of Petroleum, Beijing 102249, China
| | - Shiling Zhang
- Enhanced Oil Recovery Institute, China University of Petroleum, Beijing 102249, China
| | - Yanhua Wu
- Enhanced Oil Recovery Institute, China University of Petroleum, Beijing 102249, China
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38
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Pechsrichuang P, Lorentzen SB, Aam BB, Tuveng TR, Hamre AG, Eijsink VGH, Yamabhai M. Bioconversion of chitosan into chito-oligosaccharides (CHOS) using family 46 chitosanase from Bacillus subtilis (BsCsn46A). Carbohydr Polym 2018; 186:420-428. [PMID: 29456005 DOI: 10.1016/j.carbpol.2018.01.059] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 01/13/2018] [Accepted: 01/17/2018] [Indexed: 01/08/2023]
Abstract
BsCsn46A, a GH family 46 chitosanase from Bacillus subtilis had been previously shown to have potential for bioconversion of chitosan to chito-oligosaccharides (CHOS). However, so far, in-depth analysis of both the mode of action of this enzyme and the composition of its products were lacking. In this study, we have employed size exclusion chromatography, 1H NMR, and mass spectrometry to reveal that BsCsn46A can rapidly cleave chitosans with a wide-variety of acetylation degrees, using a non-processive endo-mode of action. The composition of the product mixtures can be tailored by varying the degree of acetylation of the chitosan and the reaction time. Detailed analysis of product profiles revealed differences compared to other chitosanases. Importantly, BsCsn46A seems to be one of the fastest chitosanases described so far. The detailed analysis of preferred endo-binding modes using H218O showed that a hexameric substrate has three productive binding modes occurring with similar frequencies.
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Affiliation(s)
- Phornsiri Pechsrichuang
- Molecular Biotechnology Laboratory, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
| | - Silje B Lorentzen
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432 Ås, Norway.
| | - Berit B Aam
- BioCHOS AS, co/Incubator Ås, P.O. Box 19, 1431 Ås, Norway.
| | - Tina R Tuveng
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432 Ås, Norway.
| | - Anne G Hamre
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432 Ås, Norway.
| | - Vincent G H Eijsink
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), P.O. Box 5003, 1432 Ås, Norway.
| | - Montarop Yamabhai
- Molecular Biotechnology Laboratory, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
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Oyeleye A, Normi YM. Chitinase: diversity, limitations, and trends in engineering for suitable applications. Biosci Rep 2018; 38:BSR2018032300. [PMID: 30042170 PMCID: PMC6131217 DOI: 10.1042/bsr20180323] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 06/07/2018] [Accepted: 12/07/2018] [Indexed: 01/09/2023] Open
Abstract
Chitinases catalyze the degradation of chitin, a ubiquitous polymer generated from the cell walls of fungi, shells of crustaceans, and cuticles of insects. They are gaining increasing attention in medicine, agriculture, food and drug industries, and environmental management. Their roles in the degradation of chitin for the production of industrially useful products and in the control of fungal pathogens and insect pests render them attractive for such purposes. However, chitinases have diverse sources, characteristics, and mechanisms of action that seem to restrain optimization procedures and render standardization techniques for enhanced practical applications complex. Hence, results of laboratory trials are not usually consistent with real-life applications. With the growing field of protein engineering, these complexities can be overcome by modifying or redesigning chitinases to enhance specific features required for specific applications. In this review, the variations in features and mechanisms of chitinases that limit their exploitation in biotechnological applications are compiled. Recent attempts to engineer chitinases for improved efficiency are also highlighted.
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Affiliation(s)
- Ayokunmi Oyeleye
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Malaysia
- Enzyme and Microbial Technology Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Malaysia
| | - Yahaya M Normi
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Malaysia
- Enzyme and Microbial Technology Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Malaysia
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Feng Y, Kitaoku Y, Tanaka J, Taira T, Ohnuma T, Aachmann FL, Fukamizo T. Mode of action and specificity of a chitinase from unicellular microalgae, Euglena gracilis. PLANT MOLECULAR BIOLOGY 2018; 97:553-564. [PMID: 30083952 DOI: 10.1007/s11103-018-0759-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 07/26/2018] [Indexed: 06/08/2023]
Abstract
Euglena gracilis is a unicellular microalga showing characteristics of both plants and animals, and extensively used as a model organism in the research works of biochemistry and molecular biology. Biotechnological applications of E. gracilis have been conducted for production of numerous important compounds. However, chitin-mediated defense system intensively studied in higher plants remains to be investigated in this microalga. Recently, Taira et al. (Biosci Biotechnol Biochem 82:1090-1100, 2018) isolated a unique chitinase gene, comprising two catalytic domains almost homologous to each other (Cat1 and Cat2) and two chitin-binding domains (CBD1 and CBD2), from E. gracilis. We herein examined the mode of action and the specificity of the recombinant Cat2 by size exclusion chromatography and NMR spectroscopy. Both Cat1 and Cat2 appeared to act toward chitin substrate with non-processive/endo-splitting mode, recognizing two contiguous N-acetylglucosamine units at subsites - 2 and - 1. This is the first report on a chitinase having two endo-splitting catalytic domains. A cooperative action of two different endo-splitting domains may be advantageous for defensive action of the E. gracilis chitinase. The unicellular alga, E. gracilis, produces a chitinase consisting of two GH18 catalytic domains (Cat1 and Cat2) and two CBM18 chitin-binding domains (CBD1 and CBD2). Here, we produced a recombinant protein of the Cat2 domain to examine its mode of action as well as specificity. Cat2 hydrolyzed N-acetylglucosamine (A) oligomers (An, n = 4, 5, and 6) and partially N-acetylated chitosans with a non-processive/endo-splitting mode of action. NMR analysis of the product mixture from the enzymatic digestion of chitosan revealed that the reducing ends were exclusively A-unit, and the nearest neighbors of the reducing ends were mostly A-unit but not exclusively. Both A-unit and D-unit were found at the non-reducing ends and the nearest neighbors. These results indicated strong and absolute specificities for subsites - 2 and - 1, respectively, and no preference for A-unit at subsites + 1 and + 2. The same results were obtained from sugar sequence analysis of the individual enzymatic products from the chitosans. The subsite specificities of Cat2 are similar to those of GH18 human chitotriosidase, but differ from those of plant GH18 chitinases. Since the structures of Cat1 and Cat2 resemble to each other (99% similarity in amino acid sequences), Cat1 may hydrolyze the substrate with the same mode of action. Thus, the E. gracilis chitinase appears to act toward chitin polysaccharide chain through a cooperative action of the two endo-splitting catalytic domains, recognizing two contiguous A-units at subsites - 2 and - 1.
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Affiliation(s)
- Yiming Feng
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, 7491, Trondheim, Norway
| | - Yoshihito Kitaoku
- Department of Advanced Bioscience, Kindai University, 3327-204 Nakamachi, Nara, 631-8505, Japan
| | - Jun Tanaka
- Department of Advanced Bioscience, Kindai University, 3327-204 Nakamachi, Nara, 631-8505, Japan
| | - Toki Taira
- Department of Bioscience and Biotechnology, University of the Ryukyus, Nishihara-cho, 903-0213, Japan
| | - Takayuki Ohnuma
- Department of Advanced Bioscience, Kindai University, 3327-204 Nakamachi, Nara, 631-8505, Japan
| | - Finn L Aachmann
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, 7491, Trondheim, Norway
| | - Tamo Fukamizo
- Department of Advanced Bioscience, Kindai University, 3327-204 Nakamachi, Nara, 631-8505, Japan.
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Bußwinkel F, Goñi O, Cord-Landwehr S, O'Connell S, Moerschbacher BM. Endochitinase 1 (Tv-ECH1) from Trichoderma virens has high subsite specificities for acetylated units when acting on chitosans. Int J Biol Macromol 2018; 114:453-461. [PMID: 29551512 DOI: 10.1016/j.ijbiomac.2018.03.070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 12/14/2017] [Accepted: 03/14/2018] [Indexed: 10/17/2022]
Abstract
Chitosans with defined characteristics have been shown to possess reproducible bioactivities for numerous applications. A promising approach for producing chitosans with defined degrees of polymerization (DP), degrees of acetylation (DA), and patterns of acetylation (PA) involves using chitin-modifying enzymes. One such enzyme, the chitinase Tv-ECH1 belonging to the glycoside hydrolase (GH) family 18, seems to have an important role in the biocontrol properties of the fungus Trichoderma virens, suggesting its potential in generating novel chitosans for plant health applications. In this study, the Tv-ECH1 enzyme was overexpressed in the methylotrophic yeast Pichia pastoris, yielding large amounts (up to 2mgmL-1) of purified recombinant enzyme of high activity, high purity, and high stability, making the system promising for industrial production of Tv-ECH1. The purified Tv-ECH1 chitinase displayed a wide optimal pH range from 4.5 to 6 and an optimal temperature of 37°C. Detailed subsite specificity analyses revealed high preference for acetylated residues at all four subsites analyzed (-2, -1, +1, +2), making Tv-ECH1 a promising candidate for the biotechnological production of specific chitosan oligomers and for the characterization of chitosan polymers via enzymatic fingerprinting.
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Affiliation(s)
- Franziska Bußwinkel
- Institute for Biology and Biotechnology of Plants, University of Münster, Schlossplatz 8, 48143 Münster, Germany
| | - Oscar Goñi
- Plant Biostimulant Group, Shannon Applied Biotechnology Centre, Institute of Technology Tralee, Clash, Tralee, County Kerry, Ireland
| | - Stefan Cord-Landwehr
- Institute for Biology and Biotechnology of Plants, University of Münster, Schlossplatz 8, 48143 Münster, Germany
| | - Shane O'Connell
- Plant Biostimulant Group, Shannon Applied Biotechnology Centre, Institute of Technology Tralee, Clash, Tralee, County Kerry, Ireland
| | - Bruno M Moerschbacher
- Institute for Biology and Biotechnology of Plants, University of Münster, Schlossplatz 8, 48143 Münster, Germany.
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Leth ML, Ejby M, Workman C, Ewald DA, Pedersen SS, Sternberg C, Bahl MI, Licht TR, Aachmann FL, Westereng B, Abou Hachem M. Differential bacterial capture and transport preferences facilitate co-growth on dietary xylan in the human gut. Nat Microbiol 2018; 3:570-580. [PMID: 29610517 DOI: 10.1038/s41564-018-0132-8] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 02/19/2018] [Indexed: 12/11/2022]
Abstract
Metabolism of dietary glycans is pivotal in shaping the human gut microbiota. However, the mechanisms that promote competition for glycans among gut commensals remain unclear. Roseburia intestinalis, an abundant butyrate-producing Firmicute, is a key degrader of the major dietary fibre xylan. Despite the association of this taxon to a healthy microbiota, insight is lacking into its glycan utilization machinery. Here, we investigate the apparatus that confers R. intestinalis growth on different xylans. R. intestinalis displays a large cell-attached modular xylanase that promotes multivalent and dynamic association to xylan via four xylan-binding modules. This xylanase operates in concert with an ATP-binding cassette transporter to mediate breakdown and selective internalization of xylan fragments. The transport protein of R. intestinalis prefers oligomers of 4-5 xylosyl units, whereas the counterpart from a model xylan-degrading Bacteroides commensal targets larger ligands. Although R. intestinalis and the Bacteroides competitor co-grew in a mixed culture on xylan, R. intestinalis dominated on the preferred transport substrate xylotetraose. These findings highlight the differentiation of capture and transport preferences as a possible strategy to facilitate co-growth on abundant dietary fibres and may offer a unique route to manipulate the microbiota based on glycan transport preferences in therapeutic interventions to boost distinct taxa.
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Affiliation(s)
- Maria Louise Leth
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Morten Ejby
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Christopher Workman
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - David Adrian Ewald
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Signe Schultz Pedersen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Claus Sternberg
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Martin Iain Bahl
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - Tine Rask Licht
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - Finn Lillelund Aachmann
- NOBIPOL, Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, Trondheim, Norway
| | - Bjørge Westereng
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
| | - Maher Abou Hachem
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark.
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43
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Chitooligosaccharides and their biological activities: A comprehensive review. Carbohydr Polym 2018; 184:243-259. [DOI: 10.1016/j.carbpol.2017.12.067] [Citation(s) in RCA: 225] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 11/10/2017] [Accepted: 12/24/2017] [Indexed: 01/11/2023]
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Hembach L, Cord-Landwehr S, Moerschbacher BM. Enzymatic production of all fourteen partially acetylated chitosan tetramers using different chitin deacetylases acting in forward or reverse mode. Sci Rep 2017; 7:17692. [PMID: 29255209 PMCID: PMC5735187 DOI: 10.1038/s41598-017-17950-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 11/30/2017] [Indexed: 11/16/2022] Open
Abstract
Some of the most abundant biomolecules on earth are the polysaccharides chitin and chitosan of which especially the oligomeric fractions have been extensively studied regarding their biological activities. However, most of these studies have not been able to assess the activity of a single, defined, partially acetylated chitosan oligosaccharide (paCOS). Instead, they have typically analyzed chemically produced, rather poorly characterized mixtures, at best with a single, defined degree of polymerization (DP) and a known average degree of acetylation (DA), as no pure and well-defined paCOS are currently available. We here present data on the enzymatic production of all 14 possible partially acetylated chitosan tetramers, out of which four were purified (>95%) regarding DP, DA, and pattern of acetylation (PA). We used bacterial, fungal, and viral chitin deacetylases (CDAs), either to partially deacetylate the chitin tetramer; or to partially re-N-acetylate the glucosamine tetramer. Both reactions proceeded with surprisingly strong and enzyme-specific regio-specificity. These pure and fully defined chitosans will allow to investigate the particular influence of DP, DA, and PA on the biological activities of chitosans, improving our basic understanding of their modes of action, e.g. their molecular perception by patter recognition receptors, but also increasing their usefulness in industrial applications.
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Affiliation(s)
- Lea Hembach
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 8, 48143, Münster, Germany
| | - Stefan Cord-Landwehr
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 8, 48143, Münster, Germany
| | - Bruno M Moerschbacher
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 8, 48143, Münster, Germany.
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Aktuganov GE, Melent’ev AI. Specific features of chitosan depolymerization by chitinases, chitosanases, and nonspecific enzymes in the production of bioactive chitooligosaccharides (Review). APPL BIOCHEM MICRO+ 2017. [DOI: 10.1134/s0003683817060023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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Chitinosanase: A fungal chitosan hydrolyzing enzyme with a new and unusually specific cleavage pattern. Carbohydr Polym 2017; 174:1121-1128. [DOI: 10.1016/j.carbpol.2017.07.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/30/2017] [Accepted: 07/02/2017] [Indexed: 11/18/2022]
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Transglycosylation by a chitinase from Enterobacter cloacae subsp. cloacae generates longer chitin oligosaccharides. Sci Rep 2017; 7:5113. [PMID: 28698589 PMCID: PMC5505975 DOI: 10.1038/s41598-017-05140-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 05/11/2017] [Indexed: 12/21/2022] Open
Abstract
Humans have exploited natural resources for a variety of applications. Chitin and its derivative chitin oligosaccharides (CHOS) have potential biomedical and agricultural applications. Availability of CHOS with the desired length has been a major limitation in the optimum use of such natural resources. Here, we report a single domain hyper-transglycosylating chitinase, which generates longer CHOS, from Enterobacter cloacae subsp. cloacae 13047 (EcChi1). EcChi1 was optimally active at pH 5.0 and 40 °C with a Km of 15.2 mg ml−1, and kcat/Km of 0.011× 102 mg−1 ml min−1 on colloidal chitin. The profile of the hydrolytic products, major product being chitobiose, released from CHOS indicated that EcChi1 was an endo-acting enzyme. Transglycosylation (TG) by EcChi1 on trimeric to hexameric CHOS resulted in the formation of longer CHOS for a prolonged duration. EcChi1 showed both chitobiase and TG activities, in addition to hydrolytic activity. The TG by EcChi1 was dependent, to some extent, on the length of the CHOS substrate and concentration of the enzyme. Homology modeling and docking with CHOS suggested that EcChi1 has a deep substrate-binding groove lined with aromatic amino acids, which is a characteristic feature of a processive enzyme.
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48
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Gohi BFCA, Zeng HY, Pan AD, Han J, Yuan J. pH Dependence of Chitosan Enzymolysis. Polymers (Basel) 2017; 9:E174. [PMID: 30970852 PMCID: PMC6432485 DOI: 10.3390/polym9050174] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/05/2017] [Accepted: 05/11/2017] [Indexed: 12/22/2022] Open
Abstract
As a means of making chitosan more useful in biotechnological applications, it was hydrolyzed using pepsin, chitosanase and α-amylase. The enzymolysis behavior of these enzymes was further systematically studied for its effectiveness in the production of low-molecular-weight chitosans (LMWCs) and other derivatives. The study showed that these enzymes depend on ion hydronium (H3O+), thus on pH with a pH dependence fitting R2 value of 0.99. In y = 1.484[H^+] + 0.114, the equation of pH dependence, when [H^+] increases by one, y (k_0/k_m) increases by 1.484. From the temperature dependence study, the activation energy (Ea) and pre-exponential factor (A) were almost identical for two of the enzymes, but a considerable difference was observed in comparison with the third enzyme. Chitosanase and pepsin had nearly identical Ea, but α-amylase was significantly lower. This serves as evidence that the hydrolysis reaction of α-amylase relies on low-barrier hydrogen bonds (LBHBs), which explains its low Ea in actual conditions. The confirmation of this phenomenon was further derived from a similarly considerable difference in the order magnitudes of A between α-amylase and the other two enzymes, which was more than five. Variation of the rate constants of the enzymatic hydrolysis of chitosan with temperature follows the Arrhenius equation.
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Affiliation(s)
- Bi Foua Claude Alain Gohi
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China.
| | - Hong-Yan Zeng
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China.
| | - A Dan Pan
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China.
| | - Jing Han
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China.
| | - Jian Yuan
- Biotechnology Institute, College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China.
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49
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Berini F, Presti I, Beltrametti F, Pedroli M, Vårum KM, Pollegioni L, Sjöling S, Marinelli F. Production and characterization of a novel antifungal chitinase identified by functional screening of a suppressive-soil metagenome. Microb Cell Fact 2017; 16:16. [PMID: 28137256 PMCID: PMC5282697 DOI: 10.1186/s12934-017-0634-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/20/2017] [Indexed: 01/20/2023] Open
Abstract
Background Through functional screening of a fosmid library, generated from a phytopathogen-suppressive soil metagenome, the novel antifungal chitinase—named Chi18H8 and belonging to family 18 glycosyl hydrolases—was previously discovered. The initial extremely low yield of Chi18H8 recombinant production and purification from Escherichia coli cells (21 μg/g cell) limited its characterization, thus preventing further investigation on its biotechnological potential. Results We report on how we succeeded in producing hundreds of milligrams of pure and biologically active Chi18H8 by developing and scaling up to a high-yielding, 30 L bioreactor process, based on a novel method of mild solubilization of E. coli inclusion bodies in lactic acid aqueous solution, coupled with a single step purification by hydrophobic interaction chromatography. Chi18H8 was characterized as a Ca2+-dependent mesophilic chitobiosidase, active on chitin substrates at acidic pHs and possessing interesting features, such as solvent tolerance, long-term stability in acidic environment and antifungal activity against the phytopathogens Fusarium graminearum and Rhizoctonia solani. Additionally, Chi18H8 was found to operate according to a non-processive endomode of action on a water-soluble chitin-like substrate. Conclusions Expression screening of a metagenomic library may allow access to the functional diversity of uncultivable microbiota and to the discovery of novel enzymes useful for biotechnological applications. A persisting bottleneck, however, is the lack of methods for large scale production of metagenome-sourced enzymes from genes of unknown origin in the commonly used microbial hosts. To our knowledge, this is the first report on a novel metagenome-sourced enzyme produced in hundreds-of-milligram amount by recovering the protein in the biologically active form from recombinant E. coli inclusion bodies. Electronic supplementary material The online version of this article (doi:10.1186/s12934-017-0634-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Francesca Berini
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy. .,"The Protein Factory Research Center", Politecnico di Milano and University of Insubria, Varese, Italy.
| | - Ilaria Presti
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy.,"The Protein Factory Research Center", Politecnico di Milano and University of Insubria, Varese, Italy.,Chemo Biosynthesis, Corana, Pavia, Italy
| | | | | | - Kjell M Vårum
- NOBIPOL, Department of Biotechnology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Loredano Pollegioni
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy.,"The Protein Factory Research Center", Politecnico di Milano and University of Insubria, Varese, Italy
| | - Sara Sjöling
- School of Natural Sciences, Technology and Environmental Studies, Södertörn University, Huddinge, Sweden
| | - Flavia Marinelli
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy.,"The Protein Factory Research Center", Politecnico di Milano and University of Insubria, Varese, Italy
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50
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Alginate gels with a combination of calcium and chitosan oligomer mixtures as crosslinkers. Carbohydr Polym 2017; 156:490-497. [DOI: 10.1016/j.carbpol.2016.09.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/02/2016] [Accepted: 09/02/2016] [Indexed: 11/17/2022]
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