1
|
Horaguchi Y, Takahashi M, Takamatsu K, Konno H, Makabe K, Yano S. Heterologous expression of α-1,3-glucanase Agn1p from Schizosaccharomyces pombe, and efficient production of nigero-oligosaccharides by enzymatic hydrolysis from solubilized α-1,3;1,6-glucan. Biosci Biotechnol Biochem 2023; 87:1219-1228. [PMID: 37410615 DOI: 10.1093/bbb/zbad094] [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: 04/05/2023] [Accepted: 06/30/2023] [Indexed: 07/08/2023]
Abstract
The glycoside hydrolase family 71 α-1,3-glucanase (Agn1p) of Schizosaccharomyces pombe was expressed in Escherichia coli Rosetta-gami B (DE3). Agn1p (0.5 nmol/mL) hydrolyzed insoluble α-1,3-glucan (1%), and about 3.3 mm reducing sugars were released after 1440 min of reaction. The analysis of reaction products by high-performance liquid chromatography revealed that pentasaccharides accumulated in the reaction mixture as the main products, along with a small amount of mono-, di-, tri-, tetra-, and hexasaccharides. Soluble glucan was prepared from insoluble α-1,3;1,6-glucan by alkaline and sonication treatment to improve the hydrolytic efficiency. As a result, this solubilized α-1,3;1,6-glucan maintained a solubilized state for at least 6 h. Agn1p (0.5 nmol/mL) hydrolyzed the solubilized α-1,3;1,6-glucan (1%), and about 8.2 mm reducing sugars were released after 240 min of reaction. Moreover, Agn1p released about 12.3 mm reducing sugars from 2% of the solubilized α-1,3;1,6-glucan.
Collapse
Affiliation(s)
- Yui Horaguchi
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata, Japan
| | - Masaki Takahashi
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata, Japan
| | - Keigo Takamatsu
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata, Japan
| | - Hiroyuki Konno
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata, Japan
| | - Koki Makabe
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata, Japan
| | - Shigekazu Yano
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata, Japan
| |
Collapse
|
2
|
Otsuka Y, Sasaki K, Suyotha W, Furusawa H, Miyazawa K, Konno H, Yano S. Construction of a fusion protein consisting of α-1,3-glucan-binding domains and tetrameric red fluorescent protein, which is involved in the aggregation of α-1,3-glucan and inhibition of fungal biofilm formation. J Biosci Bioeng 2022; 133:524-532. [PMID: 35314116 DOI: 10.1016/j.jbiosc.2022.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/18/2022] [Accepted: 02/18/2022] [Indexed: 11/24/2022]
Abstract
Agl-KA, an α-1,3-glucan-hydrolyzing enzyme from Bacillus circulans KA-304, has three α-1,3-glucan-binding domains DS1, CB6, and DS2 (DCD). While their individual binding activities toward insoluble α-1,3-glucan and fungal cell-wall are weak, the three domains in combination bind strongly to the α-1,3-glucan and the cell-wall. In this study, we constructed DCD-tetraRFP by fusing DCD with DsRed-Express2, a tetrameric red fluorescent protein. DCD-tetraRFP forms a tetramer in an aqueous solution and contains twelve substrate-binding domains in one complex. We also constructed DCD-monoGFP by fusing DCD with AcGFP1, a monomeric green fluorescent protein. The molecular weight of DCD-tetraRFP and DCD-monoGFP were compared. The results of gel filtration chromatography and dynamic light scattering indicated that DCD-tetraRFP was larger than DCD-monoGFP, suggesting that DCD-tetraRFP had a tetrameric structure. In addition, DCD-tetraRFP bound to insoluble α-1,3-glucan strongly, and the amount of DCD-tetraRFP binding to 0.01% α-1,3-glucan was about twice of DCD-monoGFP. The Kd values of DCD-tetraRFP (measurements per subunit) and DCD-monoGFP were 0.16 and 0.84 μM, respectively. Adding DCD-tetraRFP to a suspension of α-1,3-glucan caused glucan aggregation; however, adding DCD-monoGFP did not. These data suggested that DCD-tetraRFP had four DCDs sterically arranged in different directions so that DCD-tetraRFP cross-linked with the substrate, causing aggregation. Lastly, the aggregates of DCD-tetraRFP and α-1,3-glucan captured Aspergillus oryzae conidia and decreased their biofilm formation by 80% in a 24-well dish.
Collapse
Affiliation(s)
- Yuitsu Otsuka
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Kai Sasaki
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Wasana Suyotha
- Department of Industrial Biotechnology, Faculty of Agro-industry, Prince of Songkla University, Hat Yai 90112, Thailand
| | - Hiroyuki Furusawa
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Ken Miyazawa
- Laboratory of Filamentous Mycoses, Department of Fungal Infection, National Institute of Infectious Diseases, Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Hiroyuki Konno
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shigekazu Yano
- Graduate School of Sciences and Engineering, Yamagata University, Jonan, Yonezawa, Yamagata 992-8510, Japan.
| |
Collapse
|
3
|
Panti N, Cherdvorapong V, Itoh T, Hibi T, Suyotha W, Yano S, Wakayama M. Functional analysis of α-1,3-glucanase domain structure from Streptomyces thermodiastaticus HF3-3. J GEN APPL MICROBIOL 2021; 67:85-91. [PMID: 33583875 DOI: 10.2323/jgam.2020.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
α-1,3-Glucanase from Streptomyces thermodiastaticus HF3-3 (Agl-ST) has been classified in the glycoside hydrolase (GH) family 87. Agl-ST is a multi-modular domain consisting of an N-terminal β-sandwich domain (β-SW), a catalytic domain, an uncharacterized domain (UC), and a C-terminal discoidin domain (DS). Although Agl-ST did not hydrolyze α-1,4-glycosidic bonds, its amino acid sequence is more similar to GH87 mycodextranase than to α-1,3-glucanase. It might be categorized into a new subfamily of GH87. In this study, we investigated the function of the domains. Several fusion proteins of domains with green fluorescence protein (GFP) were constructed to clarify the function of each domain. The results showed that β-SW and DS domains played a role in binding α-1,3-glucan and enhancing the hydrolysis of α-1,3-glucan. The binding domains, β-SW and DS, also showed binding activity toward xylan, although it was lower than that for α-1,3-glucan. The combination of β-SW and DS domains demonstrated high binding and hydrolysis activities of Agl-ST toward α-1,3-glucan, whereas the catalytic domain showed only a catalytic function. The binding domains also achieved effective binding and hydrolysis of α-1,3-glucan in the cell wall complex of Schizophyllum commune.
Collapse
Affiliation(s)
- Niphawan Panti
- Department of Biotechnology, Faculty of Life Sciences, Ritsumeikan University
| | | | - Takafumi Itoh
- Department of Bioscience and Biotechnology, Faculty of Bioscience and Biotechnology, Fukui Prefectural University
| | - Takao Hibi
- Department of Bioscience and Biotechnology, Faculty of Bioscience and Biotechnology, Fukui Prefectural University
| | - Wassana Suyotha
- Biotechnology for Bioresource Utilization Laboratory, Department of Industrial Biotechnology, Faculty of Agro-industry, Prince of Songkla University
| | - Shigekazu Yano
- Department of Biochemical Engineering, Graduate School of Sciences and Engineering, Yamagata University
| | - Mamoru Wakayama
- Department of Biotechnology, Faculty of Life Sciences, Ritsumeikan University
| |
Collapse
|
4
|
Itoh T, Panti N, Hayashi J, Toyotake Y, Matsui D, Yano S, Wakayama M, Hibi T. Crystal structure of the catalytic unit of thermostable GH87 α-1,3-glucanase from Streptomyces thermodiastaticus strain HF3-3. Biochem Biophys Res Commun 2020; 533:1170-1176. [PMID: 33041007 DOI: 10.1016/j.bbrc.2020.09.133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 09/30/2020] [Indexed: 11/28/2022]
Abstract
α-1,3-Glucan is a homopolymer composed of D-glucose (Glc) and it is an extracellular polysaccharide found in dental plaque due to Streptococcus species. α-1,3-Glucanase from Streptomyces thermodiastaticus strain HF3-3 (Agl-ST) has been identified as a thermostable α-1,3-glucanase, which is classified into glycoside hydrolase family 87 (GH87) and specifically hydrolyzes α-1,3-glucan with an endo-action. The enzyme has a potential to inhibit the production of dental plaque and to be used for biotechnological applications. Here we show the structure of the catalytic unit of Agl-ST determined at 1.16 Å resolution using X-ray crystallography. The catalytic unit is composed of two modules, a β-sandwich fold module, and a right-handed β-helix fold module, which resembles other structural characterized GH87 enzymes from Bacillus circulans str. KA-304 and Paenibacillus glycanilyticus str. FH11, with moderate sequence identities between each other (approximately 27% between the catalytic units). However, Agl-ST is smaller in size and more thermally stable than the others. A disulfide bond that anchors the C-terminal coil of the β-helix fold, which is expected to contribute to thermal stability only exists in the catalytic unit of Agl-ST.
Collapse
Affiliation(s)
- Takafumi Itoh
- Department of Bioscience and Biotechnology, Fukui Prefectural University, 4-1-1 Matsuokakenjyoujima, Eiheiji-cho, Yoshida-gun, Fukui, 910-1195, Japan
| | - Niphawan Panti
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Junji Hayashi
- Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima, 770-8513, Japan
| | - Yosuke Toyotake
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Daisuke Matsui
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Shigekazu Yano
- Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University, Johnan, Yonezawa, Yamagata, 992-8510, Japan
| | - Mamoru Wakayama
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan.
| | - Takao Hibi
- Department of Bioscience and Biotechnology, Fukui Prefectural University, 4-1-1 Matsuokakenjyoujima, Eiheiji-cho, Yoshida-gun, Fukui, 910-1195, Japan.
| |
Collapse
|
5
|
Cherdvorapong V, Panti N, Suyotha W, Tsuchiya Y, Toyotake Y, Yano S, Wakayama M. Prevention of oral biofilm formation and degradation of biofilm by recombinant α-1,3-glucanases from Streptomyces thermodiastaticus HF3-3. J GEN APPL MICROBIOL 2020; 66:256-264. [PMID: 32595199 DOI: 10.2323/jgam.2019.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The genes encoding α-1,3-glucanases (Agls; AglST1 and AglST2) from Streptomyces thermodiastaticus HF3-3 were cloned and were then expressed in Escherichia coli Rosetta-gami B (DE3). We purified the resultant histidine (His)-tagged α-1,3-glucanases (recombinant enzymes, rAglST1 and rAglST2). Both the recombinant enzymes were similar to the wild-type enzymes. We examined the effects of rAglST1 and rAglST2 on the formation and degradation of biofilms on glass plates with Streptococcus mutans NRBC 13955 by evaluating the biofilm content (%), release of reducing sugar (mM), release of S. mutans (log CFU/mL), and the biofilm structure using laser scanning microscopy (LSM). The results showed that after incubation for 16 h, rAglST1 and rAglST2 reduced the formation of biofilm to 52% and 49% of the control, respectively. The result may reflect the fact that the concentration of the reducing sugar and the number of S. mutans cells in the rAglATs-added medium were higher than in the control medium. After an 8-h treatment with rAglST1 and rAglST2, biofilms decreased to less than 60% of the control. The number of S. mutans cells in the reaction mixture gradually increased during the incubation period. The enzymes can degrade the biofilms that were pre-formed on the glass plate by more than 50% after a 30-min incubation in the presence of toothpaste ingredients (1% w/v of sodium fluoride, benzethonium chloride, and sodium dodecyl sulfate) at 50°C. Our study showed that rAglST1 and rAglST2 have advantageous properties for dental care applications.
Collapse
Affiliation(s)
| | - Niphawan Panti
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University
| | - Wasana Suyotha
- Department of Industrial Biotechnology, Faculty of Agro-Industry, Prince of Songkla University
| | - Yuki Tsuchiya
- Department of Chemistry and Life Science, College of Bioresource Sciences, Nihon University
| | - Yosuke Toyotake
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University
| | - Shigekazu Yano
- Department of Biochemical Engineering, Graduation School of Sciences and Engineering, Yamagata University
| | - Mamoru Wakayama
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University
| |
Collapse
|
6
|
Itoh T, Intuy R, Suyotha W, Hayashi J, Yano S, Makabe K, Wakayama M, Hibi T. Structural insights into substrate recognition and catalysis by glycoside hydrolase family 87 α‐1,3‐glucanase from
Paenibacillus glycanilyticus
FH11. FEBS J 2019; 287:2524-2543. [DOI: 10.1111/febs.15161] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/02/2019] [Accepted: 11/28/2019] [Indexed: 01/20/2023]
Affiliation(s)
- Takafumi Itoh
- Department of Bioscience and Biotechnology Fukui Prefectural University Eiheiji‐cho Japan
| | - Rattanaporn Intuy
- Department of Biotechnology College of Life Sciences Ritsumeikan University Kusatsu Japan
| | - Wasana Suyotha
- Department of Industrial Biotechnology Faculty of Agro‐industry Prince of Songkla University Hat Yai Thailand
| | - Junji Hayashi
- Department of Biotechnology College of Life Sciences Ritsumeikan University Kusatsu Japan
| | - Shigekazu Yano
- Department of Biochemical Engineering Graduate School of Science and Engineering Yamagata University Yonezawa Japan
| | - Koki Makabe
- Department of Biochemical Engineering Graduate School of Science and Engineering Yamagata University Yonezawa Japan
| | - Mamoru Wakayama
- Department of Biotechnology College of Life Sciences Ritsumeikan University Kusatsu Japan
| | - Takao Hibi
- Department of Bioscience and Biotechnology Fukui Prefectural University Eiheiji‐cho Japan
| |
Collapse
|
7
|
Mutanase Enzyme from Paracoccus mutanolyticus RSP02: Characterization and Application as a Biocontrol Agent. Indian J Microbiol 2019; 59:436-444. [PMID: 31762506 DOI: 10.1007/s12088-019-00821-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 08/22/2019] [Indexed: 10/26/2022] Open
Abstract
Mutanases are enzymes that have the ability to cleave α-1,3 linkages in glucan polymer. In the present investigation, mutanase enzyme purified from the culture filtrate of Paracoccus mutanolyticus was evaluated for Streptococcal biofilm degradation and antimicrobial activity against pathogenic fungi along with enzyme kinetics, activation energies, pH and thermal stability. Biochemical and molecular characterization depicted that the enzyme showed optimum activity at pH 5.5 and at 50 °C. It displayed Michaelis-Menten behaviour with a Km of 1.263 ± 0.03 (mg/ml), Vmax of 2.712 ± 0.15 U/mg protein. Thermal stability studies denoted that it required 55.46 and 135.43 kJ mol-1 of energy for activation and deactivation in the temperature range of 30-50 °C and 50-70 °C respectively. Mutanase activity was enhanced ~ 50 and 75% by Fe2+ and EDTA, respectively, while presence of Hg2+ and Mn2+ inhibit > 90% of its activity. This enzyme has a molecular mass of 138 kDa and showed monomeric nature by Zymography. Scanning electron microscopy analysis of mutanase treated Streptococcal cells revealed cleavage of linkages among the cells and complete separation of cells, indicating its potential in dentistry as an anticaries agent in the prophylaxis and therapy of dental caries. In addition, antifungal activity of mutanase against Colletotrichum capsici MTCC 10147 and Cladosporium cladosporioide MTCC 7371 revealed that the enzyme has potential towards biological control of phytopathogens which could be used as an alternative bio-control agent against chemical pesticides in the future.
Collapse
|