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Kanwar K, Sharma D, Singh H, Pal M, Bandhu R, Azmi W. In vitro effects of alginate lyase SG4 + produced by Paenibacillus lautus alone and combined with antibiotics on biofilm formation by mucoid Pseudomonas aeruginosa. Braz J Microbiol 2024; 55:1189-1203. [PMID: 38705960 PMCID: PMC11153421 DOI: 10.1007/s42770-024-01334-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 04/03/2024] [Indexed: 05/07/2024] Open
Abstract
Alginate is a major extra polymeric substance in the biofilm formed by mucoid Pseudomonas aeruginosa. It is the main proven perpetrator of lung infections in patients suffering from cystic fibrosis. Alginate lyases are very important in the treatment of cystic fibrosis. This study evaluated the role of standalone and in conjugation, effect of alginate lyase of SG4 + isolated from Paenibacillus lautus in enhancing in vitro bactericidal activity of gentamicin and amikacin on mucoid P. aeruginosa. Using Response Surface Methodology (RSM) alginate lyase SG4 + production was optimized in shake flask and there 8.49-fold enhancement in enzyme production. In fermenter, maximum growth (10.15 mg/ml) and alginate lyase (1.46 International Units) production, 1.71-fold was increased using Central Composite Design (CCD). Further, fermentation time was reduced from 48 to 20 h. To the best of our knowledge this is the first report in which CCD was used for fermenter studies to optimize alginate lyase production. The Km and Vmax of purified enzyme were found to be 2.7 mg/ml and 0.84 mol/ml-min, respectively. The half-life (t 1/2) of purified alginate lyase SG4 + at 37 °C was 180 min. Alginate lyase SG4 + in combination with gentamicin and amikacin eradiated 48.4- 52.3% and 58- 64.6%, alginate biofilm formed by P. aeruginosa strains, respectively. The study proves that alginate lyase SG4 + has excellent exopolysaccharide disintegrating ability and may be useful in development of potent therapeutic agent to treat P. aeruginosa biofilms.
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Affiliation(s)
- Kriti Kanwar
- Department of Biotechnology, Himachal Pradesh University, Summerhill Shimla, H.P, 171005, India.
- Chandigarh Group of College, Landran, Kharar- Banur Highway, Sector 112, Greater Mohali, Panjab, 140307, India.
| | - Deepika Sharma
- Chandigarh Group of College, Landran, Kharar- Banur Highway, Sector 112, Greater Mohali, Panjab, 140307, India
| | - Harjodh Singh
- Chandigarh Group of College, Landran, Kharar- Banur Highway, Sector 112, Greater Mohali, Panjab, 140307, India
| | - Mohinder Pal
- Chandigarh Group of College, Landran, Kharar- Banur Highway, Sector 112, Greater Mohali, Panjab, 140307, India
| | - Rajneesh Bandhu
- Department of Biotechnology, Himachal Pradesh University, Summerhill Shimla, H.P, 171005, India
| | - Wamik Azmi
- Department of Biotechnology, Himachal Pradesh University, Summerhill Shimla, H.P, 171005, India.
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2
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Wang XH, Zhang YQ, Zhang XR, Zhang XD, Sun XM, Wang XF, Sun XH, Song XY, Zhang YZ, Wang N, Chen XL, Xu F. High-Level Extracellular Production of a Trisaccharide-Producing Alginate Lyase AlyC7 in Escherichia coli and Its Agricultural Application. Mar Drugs 2024; 22:230. [PMID: 38786621 PMCID: PMC11123115 DOI: 10.3390/md22050230] [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: 04/10/2024] [Revised: 05/11/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024] Open
Abstract
Alginate oligosaccharides (AOS), products of alginate degradation by endotype alginate lyases, possess favorable biological activities and have broad applications. Although many have been reported, alginate lyases with homogeneous AOS products and secretory production by an engineered host are scarce. Herein, the alginate lyase AlyC7 from Vibrio sp. C42 was characterized as a trisaccharide-producing lyase exhibiting high activity and broad substrate specificity. With PelB as the signal peptide and 500 mM glycine as the additive, the extracellular production of AlyC7 in Escherichia coli reached 1122.8 U/mL after 27 h cultivation in Luria-Bertani medium. The yield of trisaccharides from sodium alginate degradation by the produced AlyC7 reached 758.6 mg/g, with a purity of 85.1%. The prepared AOS at 20 μg/mL increased the root length of lettuce, tomato, wheat, and maize by 27.5%, 25.7%, 9.7%, and 11.1%, respectively. This study establishes a robust foundation for the industrial and agricultural applications of AlyC7.
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Affiliation(s)
- Xiao-Han Wang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
- Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
| | - Yu-Qiang Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xin-Ru Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xiao-Dong Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xiao-Meng Sun
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;
| | - Xiao-Fei Wang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xiao-Hui Sun
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
| | - Xiao-Yan Song
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
| | - Yu-Zhong Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
| | - Ning Wang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
| | - Fei Xu
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao 266237, China; (X.-H.W.); (Y.-Q.Z.); (X.-R.Z.); (X.-D.Z.); (X.-F.W.); (X.-H.S.); (X.-Y.S.); (Y.-Z.Z.)
- Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao 266237, China
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3
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Jiang J, Wang Y, Jiang Z, Yan Q, Yang S. High-level production of a novel alginate lyase (FsAly7) from Flammeovirga sp. for efficient production of low viscosity soluble dietary fiber from sodium alginate. Carbohydr Polym 2024; 326:121605. [PMID: 38142093 DOI: 10.1016/j.carbpol.2023.121605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/12/2023] [Accepted: 11/14/2023] [Indexed: 12/25/2023]
Abstract
Sodium alginate is one of the most abundant sustainable gum source for dietary fiber production. However, the preparation efficiencies of low viscosity soluble dietary fiber from sodium alginate remain low. Here, a novel alginate lyase gene (FsAly7) from Flammeovirga sp. was identified and high-level expressed in Pichia pastoris for low viscosity soluble dietary fiber production. The highest enzyme production of 3050 U mL-1 was achieved, which is by far the highest yield ever reported. FsAly7 was used for low viscosity soluble dietary fiber production from sodium alginate, and the highest degradation rate of 85.5 % was achieved under a high substrate content of 20 % (w/v). The molecular weight of obtained soluble dietary fiber converged to 10.75 kDa. FsAly7 catalyzed the cleavage of glycosidic bonds in alginate chains with formation of unsaturated non-reducing ends simultaneously in the degradation process, thus altered the chemical structures of hydrolysates. The soluble dietary fiber exhibited excellent properties, including low viscosity, high oil adsorption capacity activity (2.20 ± 0.03 g g-1) and high emulsifying activity (60.05 ± 2.96 mL/100 mL). This investigation may provide a novel alginate lyase catalyst as well as a solution for the efficient production of low viscosity soluble dietary fiber from sodium alginate.
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Affiliation(s)
- Jun Jiang
- College of Food Science and Nutritional Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Yue Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Zhengqiang Jiang
- College of Food Science and Nutritional Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Qiaojuan Yan
- Key Laboratory of Food Bioengineering (China National Light Industry), College of Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Shaoqing Yang
- College of Food Science and Nutritional Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing 100083, China.
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4
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Jiang J, Jiang Z, Yan Q, Han S, Yang S. Biochemical characterization of a novel bifunctional alginate lyase from Microbulbifer arenaceous. Protein Expr Purif 2024; 213:106372. [PMID: 37717719 DOI: 10.1016/j.pep.2023.106372] [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: 07/29/2023] [Revised: 09/05/2023] [Accepted: 09/14/2023] [Indexed: 09/19/2023]
Abstract
Bio‒production of alginate oligosaccharides (AOSs), a type of functional food additive, is a promising way for green utilization of algae, in which alginate hydrolyzing enzymes play a key role. A novel alginate lyase gene (MiAly17A) from a marine bacterium Microbulbifer arenaceous was heterologously expressed in E. coli. The coding sequence of the gene shared the highest identity of 86% with a polysaccharide lyase (PL) family 17 alginate lyase (AlgL17) from Microbulbifer sp. ALW1. The recombinant enzyme (MiAly17A) was purified and biochemically characterized. MiAly17A showed maximal enzyme activity at 40 °C and pH 7.5, respectively. It was stable at the temperatures below 35 °C and within pH 5.0-8.0. The enzyme activities were increased by 5.3 and 5.6 folds in the presence of 100 mM of K+ and Na+, respectively. MiAly17A was bifunctional and could hydrolyze sodium alginate to release unsaturated monosaccharides and oligosaccharides with degrees of polymerization (DP) 2-7. The enzyme catalyzed the cleavage of glycosidic bonds from the non-reducing ends and the backbone of the tested oligosaccharides (DP ≥ 4), exhibiting both exolytic and endo-lytic activities. Moreover, MiAly17A was used for the production of alginate oligosaccharides from sodium alginate, and the highest conversion ratio of 68% was obtained. The unique properties may possess the enzyme great potential for preparation of alginate oligosaccharides.
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Affiliation(s)
- Jun Jiang
- College of Food Science and Nutritional Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing, 100083, China
| | - Zhengqiang Jiang
- College of Food Science and Nutritional Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing, 100083, China
| | - Qiaojuan Yan
- Key Laboratory of Food Bioengineering (China National Light Industry), College of Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing, 100083, China
| | - Susu Han
- College of Food Science and Nutritional Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing, 100083, China
| | - Shaoqing Yang
- College of Food Science and Nutritional Engineering, China Agricultural University, No.17 Qinghua East Road, Haidian District, Beijing, 100083, China.
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5
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Zhang W, Ren H, Wang X, Dai Q, Liu X, Ni D, Zhu Y, Xu W, Mu W. Rational design for thermostability improvement of a novel PL-31 family alginate lyase from Paenibacillus sp. YN15. Int J Biol Macromol 2023; 253:126919. [PMID: 37717863 DOI: 10.1016/j.ijbiomac.2023.126919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/13/2023] [Accepted: 09/13/2023] [Indexed: 09/19/2023]
Abstract
Currently, alginate oligosaccharides (AOS) become attractive due to their excellent physiological effects. AOS has been widely used in food, pharmaceutical, and cosmetic industries. Generally, AOS can be produced from alginate using alginate lyase (ALyase) as the biocatalyst. However, most ALyase display poor thermostability. In this study, a thermostable ALyase from Paenibacillus sp. YN15 (Payn ALyase) was characterized. It belonged to the polysaccharide lyase (PL) 31 family and displayed poly β-D-mannuronate (Poly M) preference. Under the optimum condition (pH 8.0, 55 °C, 50 mM NaCl), it exhibited maximum activity of 90.3 U/mg and efficiently degraded alginate into monosaccharides and AOS with polymerization (DP) of 2-4. Payn ALyase was relatively stable at 55 °C, but the thermostability dropped rapidly at higher temperatures. To further improve its thermostability, rational design mutagenesis was carried out based on a combination of FireProt, Consensus Finder, and PROSS analysis. Finally, a triple-point mutant K71P/Y129G/S213G was constructed. The optimum temperature was increased from 55 to 70 °C, and the Tm was increased from 62.7 to 64.1 °C. The residual activity after 30 min incubation at 65 °C was enhanced from 36.0 % to 83.3 %. This study provided a promising ALyase mutant for AOS industrial production.
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Affiliation(s)
- Wenli Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; Shandong Haizhibao Ocean Technology Co., Ltd, Weihai, Shandong 264333, China
| | - Hu Ren
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xinxiu Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Quanyu Dai
- China Rural Technology Development Center, Beijing 100045, China
| | - Xiaoyong Liu
- Shandong Haizhibao Ocean Technology Co., Ltd, Weihai, Shandong 264333, China
| | - Dawei Ni
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wei Xu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; Shandong Haizhibao Ocean Technology Co., Ltd, Weihai, Shandong 264333, China.
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
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Wang HY, Chen ZF, Zheng ZH, Lei HW, Cong HH, Zhou HX. A Novel Cold-Adapted and High-Alkaline Alginate Lyase with Potential for Alginate Oligosaccharides Preparation. Molecules 2023; 28:6190. [PMID: 37687019 PMCID: PMC10488352 DOI: 10.3390/molecules28176190] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/15/2023] [Accepted: 08/15/2023] [Indexed: 09/10/2023] Open
Abstract
Alginate oligosaccharides (AOs) prepared through enzymatic reaction by diverse alginate lyases under relatively controllable and moderate conditions possess versatile biological activities. But widely used commercial alginate lyases are still rather rare due to their poor properties (e.g., lower activity, worse thermostability, ion tolerance, etc.). In this work, the alginate lyase Alyw208, derived from Vibrio sp. W2, was expressed in Yarrowia lipolytica of food grade and characterized in order to obtain an enzyme with excellent properties adapted to industrial requirements. Alyw208 classified into the polysaccharide lyase (PL) 7 family showed maximum activity at 35 °C and pH 10.0, indicating its cold-adapted and high-alkaline properties. Furthermore, Alyw208 preserved over 70% of the relative activity within the range of 10-55 °C, with a broader temperature range for the activity compared to other alginate-degrading enzymes with cold adaptation. Recombinant Alyw208 was significantly activated with 1.5 M NaCl to around 2.1 times relative activity. In addition, the endolytic Alyw208 was polyG-preferred, but identified as a bifunctional alginate lyase that could degrade both polyM and polyG effectively, releasing AOs with degrees of polymerization (DPs) of 2-6 and alginate monomers as the final products (that is, DPs 1-6). Alyw208 has been suggested with favorable properties to be a potent candidate for biotechnological and industrial applications.
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Affiliation(s)
- Hai-Ying Wang
- Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (H.-Y.W.); (Z.-F.C.); (Z.-H.Z.); (H.-W.L.)
| | - Zhi-Fang Chen
- Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (H.-Y.W.); (Z.-F.C.); (Z.-H.Z.); (H.-W.L.)
- Shandong Peanut Research Institute, Qingdao 266100, China
- College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Zhi-Hong Zheng
- Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (H.-Y.W.); (Z.-F.C.); (Z.-H.Z.); (H.-W.L.)
- College of Food Science and Engineering, Dalian Ocean University, Dalian 116023, China
| | - Hui-Wen Lei
- Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (H.-Y.W.); (Z.-F.C.); (Z.-H.Z.); (H.-W.L.)
- College of Food Science and Engineering, Dalian Ocean University, Dalian 116023, China
| | - Hai-Hua Cong
- College of Food Science and Technology, Suzhou Polytechnic Institute of Agriculture, Suzhou 215008, China
| | - Hai-Xiang Zhou
- Shandong Peanut Research Institute, Qingdao 266100, China
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Jiang J, Jiang Z, Yan Q, Han S, Yang S. Releasing Bioactive Compounds from Brown Seaweed with Novel Cold-Adapted Alginate Lyase and Alcalase. Mar Drugs 2023; 21:md21040208. [PMID: 37103348 PMCID: PMC10142901 DOI: 10.3390/md21040208] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/02/2023] [Accepted: 03/09/2023] [Indexed: 03/29/2023] Open
Abstract
Seaweeds are considered to be third-generation renewable biomasses, the comprehensive utilization of which has drawn increasing attention in recent years. A novel cold-active alginate lyase (VfAly7) was identified from Vibrio fortis and biochemically characterized for brown seaweed utilization. The alginate lyase gene was high-level expressed in Pichia pastoris, with an enzyme yield of 560 U/mL and a protein content of 9.8 mg/mL by high-cell density fermentation. The recombinant enzyme was most active at 30 °C and pH 7.5, respectively. VfAly7 was a bifunctional alginate lyase with both poly-guluronate and poly-mannuronate hydrolysis activities. On the basis of VfAly7, a bioconversion strategy for the utilization of brown seaweed (Undaria pinnatifida) was developed. The obtained AOSs showed stronger prebiotic activity towards tested probiotics when compared to that of commercial fructooligosaccharides (FOSs), while the obtained protein hydrolysates displayed strong xanthine oxidase inhibitory activity with IC50 of 3.3 mg/mL. This study provided a novel alginate lyase tool as well as a biotransformation route for the utilization of seaweeds.
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Wang X, Xu W, Dai Q, Liu X, Guang C, Zhang W, Mu W. Characterization of a thermostable PL-31 family alginate lyase from Paenibacillus ehimensis and its application for alginate oligosaccharides bioproduction. Enzyme Microb Technol 2023; 166:110221. [PMID: 36906979 DOI: 10.1016/j.enzmictec.2023.110221] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 02/26/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
Currently, people pay more attention to marine sugars, because of their unique physiological effects. Alginate oligosaccharides (AOS) are the degradation products of alginate and have been used in food, cosmetic, and medicine fields. AOS display good physical characteristics (low relative molecular weight, good solubility, high safety, and high stability) and excellent physiological functions (immunomodulatory, antioxidant, antidiabetic, and prebiotic activities). Alginate lyase plays a key role in the AOS bioproduction. In this study, a novel PL-31 family alginate lyase from Paenibacillus ehimensis (paeh-aly) was identified and characterized. It was extracellularly secreted in E. coli and exhibited a preference for the substrate poly β-D-mannuronate. Using sodium alginate as the substrate, it showed the maximum catalytic activity (125.7 U/mg) at pH 7.5 and 55 °C with 50 mM NaCl. Compared with other alginate lyases, paeh-aly exhibited good stability. About 86.6% and 61.0% residual activity could be maintained after 5 h incubation at 50 and 55 °C respectively, and its Tm value was 61.5 °C. The degradation products were AOS with DP 2-4. Paeh-aly demonstrated strong promise for AOS industrial production because of its excellent thermostability and efficiency.
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Affiliation(s)
- Xinxiu Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wei Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Shandong Haizhibao Ocean Technology Co., Ltd, Weihai, Shandong 264333, China
| | - Quanyu Dai
- China Rural Technology Development Center, Beijing 100045, China
| | - Xiaoyong Liu
- Shandong Haizhibao Ocean Technology Co., Ltd, Weihai, Shandong 264333, China
| | - Cuie Guang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Shandong Haizhibao Ocean Technology Co., Ltd, Weihai, Shandong 264333, China.
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
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9
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Cloning, Expression and Characterization of an Alginate Lyase in Bacillus subtilis WB600. FERMENTATION 2023. [DOI: 10.3390/fermentation9020144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The aim of this study was to further broaden the heterologous expression of alginate lyase from Vibrio alginolyticus in a Bacillus subtilis expression vector. A B. subtilis WB600/pP43NMK-alg62 strain was constructed. (NH4)2SO4 precipitation and Ni-affinity chromatography were performed to purify the enzyme. We then characterized the enzyme. Its molecular weight was 57.64 kDa, and it worked optimally at 30 °C with a pH of 8.0. Ca2+ markedly enhanced the enzymatic activity of Alg62 while Cu2+ and Ni2+ inhibited its activity. Alg62 had a wide range of substrate specificity, showing high activity toward sodium alginate and polyG. Following optimization of the fermentation process, the optimal conditions for the recombinant expression of Alg62 were as follows: temperature of 37 °C, pH of 7.0, medium consisting of glycerol 15 g/L, yeast powder 25 g/L and K+ 1.5 mmol/L. At these optimal conditions, enzyme activity reached 318.21 U/mL, which was 1.54 times higher than the initial enzyme activity.
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10
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Zhao J, Wang Q, Ni X, Shen S, Nan C, Li X, Chen X, Yang F. Dissecting the essential role of N-glycosylation in catalytic performance of xanthan lyase. BIORESOUR BIOPROCESS 2022; 9:129. [PMID: 38647758 PMCID: PMC10992191 DOI: 10.1186/s40643-022-00620-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Modified xanthan produced by xanthan lyase has broad application prospects in the food industry. However, the catalytic performance of xanthan lyase still needs to be improved through rational design. To address this problem, in this work, the glycosylation and its influences on the catalytic performance of a xanthan lyase (EcXly), which was heterologously expressed in Escherichia coli, were reported. Liquid chromatography coupled to tandem mass spectrometry analysis revealed that the N599 site of EcXly was modified by a single N-glycan chain. Based on sequence alignment and three-dimensional structure prediction, it could be deduced that the N599 site was located in the catalytic domain of EcXly and in close proximity to the catalytic residues. After site-directed mutagenesis of N599 with alanine, aspartic acid and glycine, respectively, the EcXly and its mutants were characterized and compared. The results demonstrated that elimination of the N-glycosylation had diminished the specific activity, pH stability, and substrate affinity of EcXly. Fluorescence spectra further revealed that the glycosylation could significantly affect the overall tertiary structure of EcXly. Therefore, in prokaryotic hosts, the N-glycosylation could influence the catalytic performance of the enzyme by changing its structure. To the best of our knowledge, this is the first report about the post-translational modification of xanthan lyase in prokaryotes. Overall, our work enriched research on the role of glycan chains in the functional performance of proteins expressed in prokaryotes and should be valuable for the rational design of xanthan lyase to produce modified xanthan for industrial application.
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Affiliation(s)
- Jingjing Zhao
- School of Biological Engineering, Dalian Polytechnic University, Ganjingziqu, 116034, Dalian, People's Republic of China
| | - Qian Wang
- School of Biological Engineering, Dalian Polytechnic University, Ganjingziqu, 116034, Dalian, People's Republic of China
- Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, People's Republic of China
| | - Xin Ni
- School of Biological Engineering, Dalian Polytechnic University, Ganjingziqu, 116034, Dalian, People's Republic of China
| | - Shaonian Shen
- School of Biological Engineering, Dalian Polytechnic University, Ganjingziqu, 116034, Dalian, People's Republic of China
| | - Chenchen Nan
- School of Biological Engineering, Dalian Polytechnic University, Ganjingziqu, 116034, Dalian, People's Republic of China
| | - Xianzhen Li
- School of Biological Engineering, Dalian Polytechnic University, Ganjingziqu, 116034, Dalian, People's Republic of China
| | - Xiaoyi Chen
- School of Biological Engineering, Dalian Polytechnic University, Ganjingziqu, 116034, Dalian, People's Republic of China.
| | - Fan Yang
- School of Biological Engineering, Dalian Polytechnic University, Ganjingziqu, 116034, Dalian, People's Republic of China.
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11
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Zhang M, Chen Y, Chen R, Wen Y, Huang Q, Liu Y, Zhao C. Research status of the effects of natural oligosaccharides on glucose metabolism. EFOOD 2022. [DOI: 10.1002/efd2.54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Minjiao Zhang
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
| | - Yaobin Chen
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
| | - Ruoxin Chen
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
| | - Yuxi Wen
- College of Marine Sciences Fujian Agriculture and Forestry University Fuzhou China
- Department of Analytical and Food Chemistry, Nutrition and Bromatology Group, Faculty of Sciences Universidade de Vigo Ourense Spain
| | - Qihui Huang
- College of Marine Sciences Fujian Agriculture and Forestry University Fuzhou China
- Department of Analytical and Food Chemistry, Nutrition and Bromatology Group, Faculty of Sciences Universidade de Vigo Ourense Spain
| | - Yuanyuan Liu
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
| | - Chao Zhao
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
- College of Marine Sciences Fujian Agriculture and Forestry University Fuzhou China
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology Fujian Agriculture and Forestry University Fuzhou China
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12
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Zhang MJ, Yun ST, Wang XC, Peng LY, Dou C, Zhou YX. Insights into the Influence of Signal Peptide on the Enzymatic Properties of Alginate Lyase AlyI1 with Removal Effect on Pseudomonas aeruginosa Biofilm. Mar Drugs 2022; 20:md20120753. [PMID: 36547900 PMCID: PMC9787728 DOI: 10.3390/md20120753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/24/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022] Open
Abstract
Most reports on signal peptides focus on their ability to affect the normal folding of proteins, thereby affecting their secreted expression, while few studies on its effects on enzymatic properties were published. Therefore, biochemical characterization and comparison of alginate lyase rALYI1/rALYI1-1 (rALYI1: without signal peptides; rALYI1-1:with signal peptides) were conducted in our study, and the results showed that the signal peptide affected the biochemical properties, especially in temperature and pH. rALYI1 (32.15 kDa) belonging to polysaccharide lyase family 7 was cloned from sea-cucumber-gut bacterium Tamlana sp. I1. The optimum temperature of both rALYI1 and rALYI1-1 was 40 °C, but the former had a wider optimum temperature range and better thermal stability. The optimum pH of rALYI1 and rALYI1-1 were 7.6 and 8.6, respectively. The former was more stable and acid resistant. Noticeably, rALYI1 was a salt-activated enzyme and displayed remarkable salt tolerance. Alginate, an essential polysaccharide in algae and Pseudomonas aeruginosa biofilms, is composed of α-L-guluronate and β-D-mannuronate. It is also found in our study that rALYI1 is also effective in removing mature biofilms compared with controls. In conclusion, the signal peptide affects several biochemical properties of the enzyme, and alginate lyase rALYI1 may be an effective method for inhibiting biofilm formation of Pseudomonas aeruginosa.
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Affiliation(s)
| | - Shuai-Ting Yun
- Marine College, Shandong University, Weihai 264209, China
| | - Xiao-Chen Wang
- Marine College, Shandong University, Weihai 264209, China
| | - Li-Yang Peng
- Marine College, Shandong University, Weihai 264209, China
| | - Chuan Dou
- Shangdong Kelun Pharmaceutical Co., Ltd., Bingzhou 256600, China
| | - Yan-Xia Zhou
- Marine College, Shandong University, Weihai 264209, China
- Correspondence:
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13
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Zhang X, Li W, Pan L, Yang L, Li H, Ji F, Zhang Y, Tang H, Yang D. Improving the thermostability of alginate lyase FlAlyA with high expression by computer-aided rational design for industrial preparation of alginate oligosaccharides. Front Bioeng Biotechnol 2022; 10:1011273. [PMID: 36159669 PMCID: PMC9490058 DOI: 10.3389/fbioe.2022.1011273] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 08/15/2022] [Indexed: 11/18/2022] Open
Abstract
FlAlyA, a PL7 alginate lyase with industrial potential, is widely applied in the preparation the alginate oligosaccharide because of its high activity of degradation the alginate. However, heat inactivation still limits the industrial application of FlAlyA. To further enhance its thermostability, a group of mutants were designed, according to evaluating the B-factor value and free energy change via computer-aided calculation. 25 single-point mutants and one double-points mutant were carried out by site-directed mutagenesis. The optimal two single-point mutants H176D and H71K showed 1.20 and 0.3°C increases in the values of Tm, while 7.58 and 1.73 min increases in the values of half-life (t1/2) at 50°C, respectively, compared with that of the wild-type enzyme. Interestingly, H71K exhibits the comprehensive improvement than WT, including expression level, thermal stability and specific activity. In addition, the mechanism of these two mutants is speculated by multiple sequence alignment, structural basis and molecular dynamics simulation, which is likely to be involved in the formation of new hydrogen bonds and decrease the SASA of the mutants. These results indicate that B-factor is an efficient approach to improves the thermostability of alginate lyase composed of β-sheet unit. Furthermore, the highest yield of the mutant reached about 650 mg/L, which was nearly 36 times that of previous studies. The high expression, excellent activity and good thermal stability make FlAlyA a potential candidate for the industrial production of alginate oligosaccharides.
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Affiliation(s)
- Xiu Zhang
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi, China
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Beibu Gulf Marine Research Center, National Engineering Research Center of Non-food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Wei Li
- Viticulture and Wine Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, Guangxi, China
| | - Lixia Pan
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Beibu Gulf Marine Research Center, National Engineering Research Center of Non-food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Liyan Yang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Beibu Gulf Marine Research Center, National Engineering Research Center of Non-food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Hongliang Li
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Beibu Gulf Marine Research Center, National Engineering Research Center of Non-food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Feng Ji
- Institute of Medicine and Health Research, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Yunkai Zhang
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi, China
- *Correspondence: Yunkai Zhang, ; Hongzhen Tang, ; Dengfeng Yang,
| | - Hongzhen Tang
- School of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China
- *Correspondence: Yunkai Zhang, ; Hongzhen Tang, ; Dengfeng Yang,
| | - Dengfeng Yang
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Beibu Gulf Marine Research Center, National Engineering Research Center of Non-food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
- *Correspondence: Yunkai Zhang, ; Hongzhen Tang, ; Dengfeng Yang,
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14
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Alginate Oligosaccharides Ameliorate DSS-Induced Colitis through Modulation of AMPK/NF-κB Pathway and Intestinal Microbiota. Nutrients 2022; 14:nu14142864. [PMID: 35889822 PMCID: PMC9321948 DOI: 10.3390/nu14142864] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 07/07/2022] [Accepted: 07/11/2022] [Indexed: 02/04/2023] Open
Abstract
Alginate oligosaccharides (AOS) are shown to have various biological activities of great value to medicine, food, and agriculture. However, little information is available about their beneficial effects and mechanisms on ulcerative colitis. In this study, AOS with a polymerization degree between 2 and 4 were found to possess anti-inflammatory effects in vitro and in vivo. AOS could decrease the levels of nitric oxide (NO), IL-1β, IL-6, and TNFα, and upregulate the levels of IL-10 in both RAW 264.7 and bone-marrow-derived macrophage (BMDM) cells under lipopolysaccharide (LPS) stimulation. Additionally, oral AOS administration could significantly prevent bodyweight loss, colonic shortening, and rectal bleeding in dextran sodium sulfate (DSS)-induced colitis mice. AOS pretreatment could also reduce disease activity index scores and histopathologic scores and downregulate proinflammatory cytokine levels. Importantly, AOS administration could reverse DSS-induced AMPK deactivation and NF-κB activation in colonic tissues, as evidenced by enhanced AMPK phosphorylation and p65 phosphorylation inhibition. AOS could also upregulate AMPK phosphorylation and inhibit NF-κB activation in vitro. Moreover, 16S rRNA gene sequencing of gut microbiota indicated that supplemental doses of AOS could affect overall gut microbiota structure to a varying extent and specifically change the abundance of some bacteria. Medium-dose AOS could be superior to low- or high-dose AOS in maintaining remission in DSS-induced colitis mice. In conclusion, AOS can play a protective role in colitis through modulation of gut microbiota and the AMPK/NF-kB pathway.
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15
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Bi D, Yang X, Lu J, Xu X. Preparation and potential applications of alginate oligosaccharides. Crit Rev Food Sci Nutr 2022; 63:10130-10147. [PMID: 35471191 DOI: 10.1080/10408398.2022.2067832] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Alginate, a linear polymer consisting of β-D-mannuronic acid (M) and α-L-guluronic acid (G) with 1,4-glycosidic linkages and comprising 40% of the dry weight of algae, possesses various applications in the food and nutraceutical industries. However, the potential applications of alginate are restricted in some fields because of its low water solubility and high solution viscosity. Alginate oligosaccharides (AOS) on the other hand, have low molecular weight which result in better water solubility. Hence, it becomes a more popular target to be researched in recent years for its use in foods and nutraceuticals. AOS can be obtained by multiple degradation methods, including enzymatic degradation, from alginate or alginate-derived poly G and poly M. AOS have unique bioactivity and can bring human health benefits, which render them potentials to be developed/incorporated into functional food. This review comprehensively covers methods of the preparation and analysis of AOS, and discussed the potential applications of AOS in foods and nutraceuticals.
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Affiliation(s)
- Decheng Bi
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, and Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
| | - Xu Yang
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
| | - Jun Lu
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
- School of Public Health and Interdisciplinary Studies, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland, New Zealand
| | - Xu Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, and Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China
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16
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Rhein-Knudsen N, Guan C, Mathiesen G, Horn SJ. Expression and production of thermophilic alginate lyases in Bacillus and direct application of culture supernatant for seaweed saccharification. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Gao SK, Yin R, Wang XC, Jiang HN, Liu XX, Lv W, Ma Y, Zhou YX. Structure Characteristics, Biochemical Properties, and Pharmaceutical Applications of Alginate Lyases. Mar Drugs 2021; 19:628. [PMID: 34822499 PMCID: PMC8618178 DOI: 10.3390/md19110628] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/27/2021] [Accepted: 11/06/2021] [Indexed: 02/07/2023] Open
Abstract
Alginate, the most abundant polysaccharides of brown algae, consists of various proportions of uronic acid epimers α-L-guluronic acid (G) and β-D-mannuronic acid (M). Alginate oligosaccharides (AOs), the degradation products of alginates, exhibit excellent bioactivities and a great potential for broad applications in pharmaceutical fields. Alginate lyases can degrade alginate to functional AOs with unsaturated bonds or monosaccharides, which can facilitate the biorefinery of brown algae. On account of the increasing applications of AOs and biorefinery of brown algae, there is a scientific need to explore the important aspects of alginate lyase, such as catalytic mechanism, structure, and property. This review covers fundamental aspects and recent developments in basic information, structural characteristics, the structure-substrate specificity or catalytic efficiency relationship, property, molecular modification, and applications. To meet the needs of biorefinery systems of a broad array of biochemical products, alginate lyases with special properties, such as salt-activated, wide pH adaptation range, and cold adaptation are outlined. Withal, various challenges in alginate lyase research are traced out, and future directions, specifically on the molecular biology part of alginate lyases, are delineated to further widen the horizon of these exceptional alginate lyases.
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Affiliation(s)
| | | | | | | | | | | | | | - Yan-Xia Zhou
- Marine College, Shandong University, Weihai 264209, China; (S.-K.G.); (R.Y.); (X.-C.W.); (H.-N.J.); (X.-X.L.); (W.L.); (Y.M.)
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18
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Mrudulakumari Vasudevan U, Lee OK, Lee EY. Alginate derived functional oligosaccharides: Recent developments, barriers, and future outlooks. Carbohydr Polym 2021; 267:118158. [PMID: 34119132 DOI: 10.1016/j.carbpol.2021.118158] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 04/14/2021] [Accepted: 04/14/2021] [Indexed: 02/07/2023]
Abstract
Alginate is a biopolymer used extensively in the food, pharmaceutical, and chemical industries. Alginate oligosaccharides (AOS) derived from alginate exhibit superior biological activities and therapeutic potential. Alginate lyases with characteristic substrate specificity can facilitate the production of a broad array of AOS with precise structure and functionality. By adopting innovative analytical tools in conjunction with focused clinical studies, the structure-bioactivity relationship of a number of AOS has been brought to light. This review covers fundamental aspects and recent developments in AOS research. Enzymatic and microbial processes involved in AOS production from brown algae and sequential steps involved in AOS structure elucidation are outlined. Biological mechanisms underlying the health benefits of AOS and their potential industrial and therapeutic applications are elaborated. Withal, various challenges in AOS research are traced out, and future directions, specifically on recombinant systems for AOS preparation, are delineated to further widen the horizon of these exceptional oligosaccharides.
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Affiliation(s)
- Ushasree Mrudulakumari Vasudevan
- Department of Chemical Engineering (Integrated Engineering), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea
| | - Ok Kyung Lee
- Department of Chemical Engineering (Integrated Engineering), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea
| | - Eun Yeol Lee
- Department of Chemical Engineering (Integrated Engineering), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea.
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19
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Duman-Özdamar ZE, Binay B. Production of Industrial Enzymes via Pichia pastoris as a Cell Factory in Bioreactor: Current Status and Future Aspects. Protein J 2021; 40:367-376. [DOI: 10.1007/s10930-021-09968-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2021] [Indexed: 02/06/2023]
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20
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Sun C, Zhou J, Duan G, Yu X. Hydrolyzing Laminaria japonica with a combination of microbial alginate lyase and cellulase. BIORESOURCE TECHNOLOGY 2020; 311:123548. [PMID: 32454421 DOI: 10.1016/j.biortech.2020.123548] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
A novel seaweed-hydrolyzing strain designated as Pseudoalteromonas sp. Alg6B was isolated from the surface of brown seaweed (Laminaria japonica). The activity of crude alginate lyase produced by Alg6B was 54.5 U/ml and the main products of hydrolyzing alginate were disaccharide and tetrasaccharide. The hydrolysis rate of seaweed reached up to 97% after combining 3% (v/v) Alg6B and 0.2% (w/v) solid cellulase. In kelp hydrolysate, the contents of nutrients are much more than raw seaweed. Alg6B grows quickly and has the ability of producing alginate oligosaccharides with low molecular weight (MW) (≤2 kDa). Furthermore, this study demonstrates that a combination of microbial alginate lyase and cellulase could almost hydrolyze seaweed completely. This research indicated that Alg6B could provide a feasible pathway to produce alginate oligosaccharides (AOS), and the synergistic effect of alginate lyase and cellulase on seaweed bioconversion can potentially pave the way to the sustainable production of seaweed fertilizer.
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Affiliation(s)
- Chixiang Sun
- The Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University, 1800 Li-Hu Road, Bin-Hu District, Wuxi 214122, China
| | - Jianli Zhou
- The Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University, 1800 Li-Hu Road, Bin-Hu District, Wuxi 214122, China; School of Food and Drug Manufacturing Engineering, Guizhou Institute of Technology, 1 Caiguan Road, Guiyang 550003, China
| | - Guoliang Duan
- The Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University, 1800 Li-Hu Road, Bin-Hu District, Wuxi 214122, China
| | - Xiaobin Yu
- The Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University, 1800 Li-Hu Road, Bin-Hu District, Wuxi 214122, China.
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21
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Characterization of a New Intracellular Alginate Lyase with Metal Ions-Tolerant and pH-Stable Properties. Mar Drugs 2020; 18:md18080416. [PMID: 32784864 PMCID: PMC7460510 DOI: 10.3390/md18080416] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/01/2020] [Accepted: 08/04/2020] [Indexed: 12/01/2022] Open
Abstract
Alginate lyases play an important role in alginate oligosaccharides (AOS) preparation and brown seaweed processing. Many extracellular alginate lyases have been characterized to develop efficient degradation tools needed for industrial applications. However, few studies focusing on intracellular alginate lyases have been conducted. In this work, a novel intracellular alkaline alginate lyase Alyw202 from Vibrio sp. W2 was cloned, expressed and characterized. Secretory expression was performed in a food-grade host, Yarrowia lipolytica. Recombinant Alyw202 with a molecular weight of approximately 38.3 kDa exhibited the highest activity at 45 °C and more than 60% of the activity in a broad pH range of 3.0 to 10.0. Furthermore, Alyw202 showed remarkable metal ion-tolerance, NaCl independence and the capacity of degrading alginate into oligosaccharides of DP2-DP4. Due to the unique pH-stable and high salt-tolerant properties, Alyw202 has potential applications in the food and pharmaceutical industries.
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22
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Zhou HX, Xu SS, Yin XJ, Wang FL, Li Y. Characterization of a New Bifunctional and Cold-Adapted Polysaccharide Lyase (PL) Family 7 Alginate Lyase from Flavobacterium sp. Mar Drugs 2020; 18:E388. [PMID: 32722647 PMCID: PMC7460543 DOI: 10.3390/md18080388] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 12/14/2022] Open
Abstract
Alginate oligosaccharides produced by enzymatic degradation show versatile physiological functions and biological activities. In this study, a new alginate lyase encoding gene alyS02 from Flavobacterium sp. S02 was recombinantly expressed at a high level in Yarrowia lipolytica, with the highest extracellular activity in the supernatant reaching 36.8 ± 2.1 U/mL. AlyS02 was classified in the polysaccharide lyase (PL) family 7. The optimal reaction temperature and pH of this enzyme were 30 °C and 7.6, respectively, indicating that AlyS02 is a cold-adapted enzyme. Interestingly, AlyS02 contained more than 90% enzyme activity at 25 °C, higher than other cold-adapted enzymes. Moreover, AlyS02 is a bifunctional alginate lyase that degrades both polyG and polyM, producing di- and trisaccharides from alginate. These findings suggest that AlyS02 would be a potent tool for the industrial applications.
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Affiliation(s)
- Hai-Xiang Zhou
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China;
| | - Shan-Shan Xu
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China;
| | - Xue-Jing Yin
- Qingdao Mental Health Center, Qingdao University, Qingdao 266034, China;
| | - Feng-Long Wang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China;
| | - Yang Li
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China
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23
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Expression and Characterization of an Alginate Lyase and Its Thermostable Mutant in Pichia pastoris. Mar Drugs 2020; 18:md18060305. [PMID: 32545157 PMCID: PMC7345639 DOI: 10.3390/md18060305] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 01/25/2023] Open
Abstract
Alginate is one of the most abundant polysaccharides in algae. Alginate lyase degrades alginate through a β-elimination mechanism to produce alginate oligosaccharides with special bioactivities. Improving enzyme activity and thermal stability can promote the application of alginate lyase in the industrial preparation of alginate oligosaccharides. In this study, the recombinant alginate lyase cAlyM and its thermostable mutant 102C300C were expressed and characterized in Pichia pastoris. The specific activities of cAlyM and 102C300C were 277.1 U/mg and 249.6 U/mg, respectively. Both enzymes showed maximal activity at 50 °C and pH 8.0 and polyG preference. The half-life values of 102C300C at 45 °C and 50 °C were 2.6 times and 11.7 times the values of cAlyM, respectively. The degradation products of 102C300C with a lower degree of polymerization contained more guluronate. The oligosaccharides with a polymerization degree of 2–4 were the final hydrolytic products. Therefore, 102C300C is potentially valuable in the production of alginate oligosaccharides with specific M/G ratio and molecular weights.
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24
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Dharani SR, Srinivasan R, Sarath R, Ramya M. Recent progress on engineering microbial alginate lyases towards their versatile role in biotechnological applications. Folia Microbiol (Praha) 2020; 65:937-954. [DOI: 10.1007/s12223-020-00802-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/16/2020] [Indexed: 11/30/2022]
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Xing M, Cao Q, Wang Y, Xiao H, Zhao J, Zhang Q, Ji A, Song S. Advances in Research on the Bioactivity of Alginate Oligosaccharides. Mar Drugs 2020; 18:E144. [PMID: 32121067 PMCID: PMC7142810 DOI: 10.3390/md18030144] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 02/22/2020] [Accepted: 02/25/2020] [Indexed: 12/12/2022] Open
Abstract
Alginate is a natural polysaccharide present in various marine brown seaweeds. Alginate oligosaccharide (AOS) is a degradation product of alginate, which has received increasing attention due to its low molecular weight and promising biological activity. The wide-ranging biological activity of AOS is closely related to the diversity of their structures. AOS with a specific structure and distinct applications can be obtained by different methods of alginate degradation. This review focuses on recent advances in the biological activity of alginate and its derivatives, including their anti-tumor, anti-oxidative, immunoregulatory, anti-inflammatory, neuroprotective, antibacterial, hypolipidemic, antihypertensive, and hypoglycemic properties, as well as the ability to suppress obesity and promote cell proliferation and regulate plant growth. We hope that this review will provide theoretical basis and inspiration for the high-value research developments and utilization of AOS-related products.
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Affiliation(s)
- Maochen Xing
- Marine College, Shandong University, Weihai 264209, China; (M.X.); (Q.C.); (Y.W.); (H.X.); (J.Z.); (Q.Z.); (A.J.)
| | - Qi Cao
- Marine College, Shandong University, Weihai 264209, China; (M.X.); (Q.C.); (Y.W.); (H.X.); (J.Z.); (Q.Z.); (A.J.)
| | - Yu Wang
- Marine College, Shandong University, Weihai 264209, China; (M.X.); (Q.C.); (Y.W.); (H.X.); (J.Z.); (Q.Z.); (A.J.)
| | - Han Xiao
- Marine College, Shandong University, Weihai 264209, China; (M.X.); (Q.C.); (Y.W.); (H.X.); (J.Z.); (Q.Z.); (A.J.)
| | - Jiarui Zhao
- Marine College, Shandong University, Weihai 264209, China; (M.X.); (Q.C.); (Y.W.); (H.X.); (J.Z.); (Q.Z.); (A.J.)
| | - Qing Zhang
- Marine College, Shandong University, Weihai 264209, China; (M.X.); (Q.C.); (Y.W.); (H.X.); (J.Z.); (Q.Z.); (A.J.)
| | - Aiguo Ji
- Marine College, Shandong University, Weihai 264209, China; (M.X.); (Q.C.); (Y.W.); (H.X.); (J.Z.); (Q.Z.); (A.J.)
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Shuliang Song
- Marine College, Shandong University, Weihai 264209, China; (M.X.); (Q.C.); (Y.W.); (H.X.); (J.Z.); (Q.Z.); (A.J.)
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Rational Design of Alginate Lyase from Microbulbifer sp. Q7 to Improve Thermal Stability. Mar Drugs 2019; 17:md17060378. [PMID: 31242622 PMCID: PMC6627800 DOI: 10.3390/md17060378] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 06/20/2019] [Accepted: 06/21/2019] [Indexed: 11/25/2022] Open
Abstract
Alginate lyase degrades alginate by the β-elimination mechanism to produce oligosaccharides with special bioactivities. The low thermal stability of alginate lyase limits its industrial application. In this study, introducing the disulfide bonds while using the rational design methodology enhanced the thermal stability of alginate lyase cAlyM from Microbulbifer sp. Q7. Enzyme catalytic sites, secondary structure, spatial configuration, and molecular dynamic simulation were comprehensively analyzed. When compared with cAlyM, the mutants D102C-A300C and G103C-T113C showed an increase by 2.25 and 1.16 h, respectively, in half-life time at 45 °C, in addition to increases by 1.7 °C and 0.4 °C in the melting temperature, respectively. The enzyme-specific activity and kcat/Km values of D102C-A300C were 1.8- and 1.5-times higher than those of cAlyM, respectively. The rational design strategy that was used in this study provides a valuable method for improving the thermal stability of the alginate lyase.
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Vuoristo KS, Fredriksen L, Oftebro M, Arntzen MØ, Aarstad OA, Stokke R, Steen IH, Hansen LD, Schüller RB, Aachmann FL, Horn SJ, Eijsink VGH. Production, Characterization, and Application of an Alginate Lyase, AMOR_PL7A, from Hot Vents in the Arctic Mid-Ocean Ridge. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:2936-2945. [PMID: 30781951 DOI: 10.1021/acs.jafc.8b07190] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Enzymatic depolymerization of seaweed polysaccharides is gaining interest for the production of functional oligosaccharides and fermentable sugars. We describe a thermostable alginate lyase belonging to Polysaccharide Lyase family 7 (PL7), which can be used to degrade brown seaweed, Saccharina latissima, at conditions also suitable for a commercial cellulase cocktail (Cellic CTec2). This enzyme, AMOR_PL7A, is a β-d-mannuronate specific (EC 4.2.2.3) endoacting alginate lyase, which degrades alginate and poly mannuronate within a broad range of pH, temperature and salinity. At 65 °C and pH 6.0, its Km and kcat values for sodium alginate are 0.51 ± 0.09 mg/mL and 7.8 ± 0.3 s-1 respectively. Degradation of seaweed with blends of Cellic CTec2 and AMOR_PL7A at 55 °C in seawater showed that the lyase efficiently reduces viscosity and increases glucose solublization. Thus, AMOR_PL7A may be useful in development of efficient protocols for enzymatic seaweed processing.
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Affiliation(s)
| | - Lasse Fredriksen
- Faculty of Chemistry, Biotechnology and Food Science , Norwegian University of Life Sciences (NMBU) , P.O. Box 5003, N-1432 Aas , Norway
| | - Maren Oftebro
- Faculty of Chemistry, Biotechnology and Food Science , Norwegian University of Life Sciences (NMBU) , P.O. Box 5003, N-1432 Aas , Norway
| | - Magnus Ø Arntzen
- Faculty of Chemistry, Biotechnology and Food Science , Norwegian University of Life Sciences (NMBU) , P.O. Box 5003, N-1432 Aas , Norway
| | - Olav A Aarstad
- Department of Biotechnology and Food Science , NTNU Norwegian University of Science and Technology , Sem Sælands vei 6/8 , N-7491 Trondheim , Norway
| | - Runar Stokke
- Department of Biological Sciences and KG Jebsen Centre for Deep Sea Research , University of Bergen , N-5020 Bergen , Norway
| | - Ida H Steen
- Department of Biological Sciences and KG Jebsen Centre for Deep Sea Research , University of Bergen , N-5020 Bergen , Norway
| | - Line Degn Hansen
- Faculty of Chemistry, Biotechnology and Food Science , Norwegian University of Life Sciences (NMBU) , P.O. Box 5003, N-1432 Aas , Norway
| | - Reidar B Schüller
- Faculty of Chemistry, Biotechnology and Food Science , Norwegian University of Life Sciences (NMBU) , P.O. Box 5003, N-1432 Aas , Norway
| | - Finn L Aachmann
- Department of Biotechnology and Food Science , NTNU Norwegian University of Science and Technology , Sem Sælands vei 6/8 , N-7491 Trondheim , Norway
| | - Svein J Horn
- Faculty of Chemistry, Biotechnology and Food Science , Norwegian University of Life Sciences (NMBU) , P.O. Box 5003, N-1432 Aas , Norway
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Liu WC, Inwood S, Gong T, Sharma A, Yu LY, Zhu P. Fed-batch high-cell-density fermentation strategies for Pichia pastoris growth and production. Crit Rev Biotechnol 2019; 39:258-271. [DOI: 10.1080/07388551.2018.1554620] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Wan-Cang Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines; NHC Key Laboratory of Biosynthesis of Natural Products, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
- Biotechnology Core Laboratory, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, U.S.A
- Chinese Academy of Medical Sciences & Peking Union Medical College, Institute of Medicinal Biotechnology, Beijing, P. R. China
| | - Sarah Inwood
- Biotechnology Core Laboratory, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, U.S.A
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Ting Gong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines; NHC Key Laboratory of Biosynthesis of Natural Products, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
| | - Ashish Sharma
- Biotechnology Core Laboratory, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, U.S.A
| | - Li-Yan Yu
- Chinese Academy of Medical Sciences & Peking Union Medical College, Institute of Medicinal Biotechnology, Beijing, P. R. China
| | - Ping Zhu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines; NHC Key Laboratory of Biosynthesis of Natural Products, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, P. R. China
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Sun X, Shen W, Gao Y, Cai M, Zhou M, Zhang Y. Heterologous expression and purification of a marine alginate lyase in Escherichia coli. Protein Expr Purif 2019; 153:97-104. [DOI: 10.1016/j.pep.2018.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 08/23/2018] [Accepted: 09/06/2018] [Indexed: 01/28/2023]
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Effects of Calcium Alginate Submicroparticles on Seed Germination and Seedling Growth of Wheat ( Triticum aestivum L.). Polymers (Basel) 2018; 10:polym10101154. [PMID: 30961078 PMCID: PMC6403849 DOI: 10.3390/polym10101154] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 10/05/2018] [Accepted: 10/06/2018] [Indexed: 11/26/2022] Open
Abstract
Calcium alginate (CaAlg) submicroparticles have a potential application in agricultural delivery systems. This study investigated the effects of CaAlg submicroparticles on seed germination and seedling growth of wheat. CaAlg submicroparticles with a Z-average diameter of around 250.4 nm and a measured zeta potential value of about −25.4 mV were prepared and characterized by dynamic light scattering (DLS), scanning electron microscopy (SEM) and energy dispersive X-ray spectrometer (EDS). After this, the effects of the concentration of CaAlg submicroparticles (10–500 μg/mL) on germination percentage, seedling length, the number of adventitious roots, chlorophyll content and soluble protein content were evaluated. The results demonstrated a significant increase in the level of germination percentage (9.0%), seedling index (50.3%), adventitious roots (27.5%), seedling length (17.0%), chlorophyll (8.7%) and soluble protein contents (4.5%) at a concentration of 100 μg/mL. However, an inhibitory effect was observed at a concentration of 500 μg/mL. The SEM examination showed that CaAlg submicroparticles could be successfully adsorbed onto the surface of the wheat seed. Further studies proved that CaAlg submicroparticles at a concentration of 100 μg/mL promoted the expression of indole-3-acetic acid (IAA)-related genes (YUCCA9, AUX1, ARF and UGT) in wheat, which resulted in an increase of 69% and 21% in IAA concentration in wheat roots and shoots, respectively.
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