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Xu Y, Li J, An L, Qiu Y, Mao A, He Z, Guo J, Yan H, Li H, Hu Z. Biochemical Characterization of a Novel Thermostable Ulvan Lyase from Tamlana fucoidanivorans CW2-9. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:11773-11781. [PMID: 38722333 DOI: 10.1021/acs.jafc.4c01717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Ulvan is a complex sulfated polysaccharide extracted from Ulva, and ulvan lyases can degrade ulvan through a β-elimination mechanism to obtain oligosaccharides. In this study, a new ulvan lyase, EPL15085, which belongs to the polysaccharide lyase (PL) 28 family from Tamlana fucoidanivorans CW2-9, was characterized in detail. The optimal pH and salinity are 9.0 and 0.4 M NaCl, respectively. The Km and Vmax of recombinant EPL15085 toward ulvan are 0.80 mg·mL-1 and 11.22 μmol·min -1 mg-1·mL-1, respectively. Unexpectedly, it is very resistant to high temperatures. After treatment at 100 °C, EPL15085 maintained its ability to degrade ulvan. Molecular dynamics simulation analysis and site-directed mutagenesis analysis indicated that the strong rigidity of the disulfide bond between Cys74-Cys102 in the N-terminus is related to its thermostability. In addition, oligosaccharides with disaccharides and tetrasaccharides were the end products of EPL15085. Based on molecular docking and site-directed mutagenesis analysis, Tyr177 and Leu134 are considered to be the crucial residues for enzyme activity. In conclusion, our study identified a new PL28 family of ulvan lyases, EPL15085, with excellent heat resistance that can expand the database of ulvan lyases and provide the possibility to make full use of ulvan.
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Affiliation(s)
- Yan Xu
- Heyuan Polytechnic, Heyuan, Guangdong 517000, China
- Heyuan Key Laboratory of Agricultural Products (Food) Processing, Heyuan, Guangdong 517000, China
| | - Jin Li
- College of Life Sciences, China West Normal University, Nanchong 637002, China
| | - Lu An
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China
| | - Yuankai Qiu
- Heyuan Polytechnic, Heyuan, Guangdong 517000, China
| | - Aihua Mao
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China
| | - Zhixiao He
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China
| | - Jialing Guo
- Heyuan Polytechnic, Heyuan, Guangdong 517000, China
| | - Hanbing Yan
- Heyuan Polytechnic, Heyuan, Guangdong 517000, China
| | - Han Li
- Heyuan Polytechnic, Heyuan, Guangdong 517000, China
| | - Zhong Hu
- Department of Biology, Shantou University, Shantou, Guangdong 515063, China
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Tanaka R, Miyake H, Shibata T. Genome sequence of Vibrio sp. strain 10N, an ulvan-degrading bacterium isolated from coastal seawater collected at Ise Bay, Japan. Microbiol Resour Announc 2024; 13:e0097223. [PMID: 38206020 PMCID: PMC10868263 DOI: 10.1128/mra.00972-23] [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: 10/12/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024] Open
Abstract
Genome sequence of an ulvan-degrading bacterium, Vibrio sp. strain 10N, is presented. The genome is 5,358,550 bp with a G + C content of 46.5%. A total of 4,712 coding sequences, including two novel ulvan lyase genes encoding a BNR4 and a glycoside hydrolase (GH88) motif, are known to be involved in the degradation of green algae.
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Affiliation(s)
- Reiji Tanaka
- Graduate School of Bioresource, Mie University, Tsu, Japan
- Seaweed Biorefinery Research Center, Mie University, Tsu, Japan
| | - Hideo Miyake
- Graduate School of Bioresource, Mie University, Tsu, Japan
- Seaweed Biorefinery Research Center, Mie University, Tsu, Japan
| | - Toshiyuki Shibata
- Graduate School of Bioresource, Mie University, Tsu, Japan
- Seaweed Biorefinery Research Center, Mie University, Tsu, Japan
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Rodrigues VJ, Jouanneau D, Fernandez-Fuentes N, Onime LA, Huws SA, Odaneth AA, Adams JMM. Biochemical characterisation of a PL24 ulvan lyase from seaweed-associated Vibrio sp. FNV38. JOURNAL OF APPLIED PHYCOLOGY 2023; 36:697-711. [PMID: 38765689 PMCID: PMC11101340 DOI: 10.1007/s10811-023-03136-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 05/22/2024]
Abstract
Ulvan is a green macroalgal cell wall polysaccharide that has tremendous potential for valorisation due to its unique composition of sulphated rhamnose, glucuronic acid, iduronic acid and xylose. Several potential applications such as production of biofuels, bioplastics and other value-added products necessitate the breakdown of the polysaccharide to oligomers or monomers. Research on ulvan saccharifying enzymes has been continually increasing over the last decade, with the increasing focus on valorisation of seaweed biomass for a biobased economy. Lyases are the first of several enzymes that are involved in saccharifying the polysaccharide and several ulvan lyases have been structurally and biochemically characterised to enable their effective use in the valorisation processes. This study investigates the whole genome of Vibrio sp. FNV38, an ulvan metabolising organism and biochemical characteristics of a PL24 ulvan lyase that it possesses. The genome of Vibrio sp. FNV38 has a diverse CAZy profile with several genes involved in the metabolism of ulvan, cellulose, agar, and alginate. The enzyme exhibits optimal activity at pH 8.5 in 100 mM Tris-HCl buffer and 30 °C. However, its thermal stability is poor with significant loss of activity after 2 h of incubation at temperatures above 25 °C. Breakdown product analysis reveals that the enzyme depolymerised the polysaccharide predominantly to disaccharides and tetrasaccharides. Supplementary Information The online version contains supplementary material available at 10.1007/s10811-023-03136-3.
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Affiliation(s)
- Valerie J. Rodrigues
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, SY23 3EE United Kingdom
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga (East), Mumbai, 400019 Maharashtra India
| | - Diane Jouanneau
- Laboratory of Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff (SBR), CNRS, 29688 Roscoff, Bretagne France
- Laboratory of Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff (SBR), Sorbonne Université, Roscoff, Bretagne, France
| | - Narcis Fernandez-Fuentes
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, SY23 3EE United Kingdom
| | - Lucy A. Onime
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, SY23 3EE United Kingdom
| | - Sharon A. Huws
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, SY23 3EE United Kingdom
- Institute for Global Food Security, Queen’s University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL United Kingdom
| | - Annamma A. Odaneth
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga (East), Mumbai, 400019 Maharashtra India
| | - Jessica M. M. Adams
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Gogerddan, Aberystwyth, SY23 3EE United Kingdom
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Li C, Tang T, Jiang J, Yao Z, Zhu B. Biochemical characterization of a new ulvan lyase and its applicability in utilization of ulvan and preparation of ulva oligosaccharides. Glycobiology 2023; 33:837-845. [PMID: 37593920 DOI: 10.1093/glycob/cwad068] [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: 05/13/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/19/2023] Open
Abstract
Ulva is globally distributed specie and has a high economic value. Ulvan is one of the main active substances in Ulva, which has a variety of biological properties. Ulvan lyase degrades ulvan through a β-elimination mechanism which cleaves the β-glycosidic bond between Rha3S and GlcA or IdoA. The complex monosaccharide composition of ulvan makes it promising for use in food and pharmaceutical applications. This thesis explores a putative ulvan lyase from Alteromonas sp. KUL_42. We expressed and purified the protein, performed a series of characterizations and signal peptide had been removed. The results showed that the protein molecular weight of ULA-2 was 53.97 kDa, and it had the highest catalytic activity at 45 °C and pH 8.0 in Tris-HCl buffer. The Km and Vmax values were 2.24 mg · mL-1 and 2.048 μmol · min-1 · mL-1, respectively. The activity of ULA-2 was able to maintain more than 80% at 20 ~ 30 °C. ESI-MS analysis showed that the primary end-products were mainly disaccharides to tetrasaccharides. The study of ULA-2 enriches the ulvan lyase library, promotes the development and high-value utilization of Ulva resources, and facilitates further research applications of ulvan lyase in ulva oligosaccharides.
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Affiliation(s)
- Chen Li
- College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhunan Road, Nanjing 211816, China
| | - Tiancheng Tang
- College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhunan Road, Nanjing 211816, China
| | - Jinju Jiang
- State Key Laboratory of Bioactive Seaweed Substances, Qingdao Brightmoon Seaweed Group Co Ltd, 777 Mingyue Road, Qingdao 266400, China
| | - Zhong Yao
- College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhunan Road, Nanjing 211816, China
| | - Benwei Zhu
- College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhunan Road, Nanjing 211816, China
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Genomic potential for exopolysaccharide production and differential polysaccharide degradation in closely related Alteromonas sp. PRIM-21 and Alteromonas fortis 1 T. Antonie Van Leeuwenhoek 2023; 116:39-51. [PMID: 36396850 DOI: 10.1007/s10482-022-01796-8] [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: 05/17/2022] [Accepted: 11/08/2022] [Indexed: 11/18/2022]
Abstract
Members of the genus Alteromonas are widely distributed in diverse marine environments and are often associated with marine organisms. Their ability to produce exopolysaccharides (EPS) and depolymerize sulfated algal polysaccharides has provided industrial importance to some species. Here, we describe the draft genome of an algae-associated strain namely, Alteromonas sp. PRIM-21 isolated from the southwest coast of India to understand the EPS biosynthetic pathways as well as polysaccharide depolymerization system in comparison to the closely related strain Alteromonas fortis 1T that shares 99.8% 16S rRNA gene sequence similarity. Whole-genome shotgun sequencing of Alteromonas sp. PRIM-21 yielded 50 contigs with a total length of 4,638,422 bp having 43.86% GC content. The resultant genome shared 95.9% OrthoANI value with A. fortis 1 T, and contained 4125 predicted protein-coding genes, 71 tRNA and 10 rRNA genes. Genes involved in Wzx/Wzy-, ABC transporter- and synthase-dependent pathways for EPS production and secretion were common in both Alteromonas sp. PRIM-21 and A. fortis 1T. However, the distribution of carbohydrate-active enzymes (CAZymes) was heterogeneous. The strain PRIM-21 harbored polysaccharide lyases for the degradation of alginate, ulvan, arabinogalactan and chondroitin. This was further validated from the culture-based assays using seven different polysaccharides. The depolymerizing ability of the bacteria may be useful in deriving nutrients from the biopolymers produced in the algal host while the EPS biosynthesis may provide additional advantages for life in the stressful marine environment. The results also highlight the genetic heterogeneity in terms of polysaccharide utilization among the closely related Alteromonas strains.
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Tang T, Zhu B, Yao Z. Biochemical characterization and elucidation the action mode of a new PL25 family ulvan lyase from marine bacterium Alteromonas sp. TK-45 (2). ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jagtap AS, Parab AS, Manohar CS, Kadam NS. Prebiotic potential of enzymatically produced ulvan oligosaccharides using ulvan lyase of Bacillus subtilis, NIOA181, a macroalgae-associated bacteria. J Appl Microbiol 2022; 133:3176-3190. [PMID: 35957555 DOI: 10.1111/jam.15775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/18/2022] [Accepted: 08/09/2022] [Indexed: 11/28/2022]
Abstract
AIMS To characterize the polysaccharide hydrolyzing potential of macroalgae-associated bacteria (MABs) for enzymatic production of oligosaccharides and determining their prebiotic potential. METHODS AND RESULTS Approximately 400 MABs were qualitatively characterised for polysaccharide hydrolyzing activity. Only about 5 to 15% of the isolates were found to have the potential for producing porphyranase, alginate lyase and ulvan lyase enzymes which were quantified in specific substrate broths. One potential MAB, Bacillus subtilis, NIOA181, isolated from green macroalgae, showed the highest ulvan lyase activity. This enzyme was partially purified and used to hydrolyse ulvan into ulvan oligosaccharides. Structural characterization of ulvan oligosaccharides showed that they are predominantly composed of di-, tri-, and tetrasaccharide units. Results showed that the enzymatically produced ulvan oligosaccharides exhibited prebiotic activity by promoting the growth of probiotic bacteria and suppressing the enteric pathogens, which were higher than the ulvan polysaccharide and equivalent to commercial fructooligosaccharides. CONCLUSIONS A potential MAB, NIOA181, producing ulvan lyase was isolated and used for the production of ulvan oligosaccharides with prebiotic activity. SIGNIFICANCE AND IMPACT OF STUDY Rarely studied ulvan oligosaccharides with prebiotic activity can be widely used as an active pharmaceutical ingredient in nutraceutical and other healthcare applications.
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Affiliation(s)
- Ashok S Jagtap
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, India.,School of Earth, Ocean and Atmospheric Sciences, Goa University, Taleigao Plateau, Goa, India
| | - Ashutosh S Parab
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, India.,School of Earth, Ocean and Atmospheric Sciences, Goa University, Taleigao Plateau, Goa, India
| | - Cathrine S Manohar
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, India
| | - Nitin S Kadam
- Central Instrumentation Facility, Savitribai Phule Pune University, Pune, India
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Isolation, Diversity and Characterization of Ulvan-Degrading Bacteria Isolated from Marine Environments. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113420. [PMID: 35684358 PMCID: PMC9182395 DOI: 10.3390/molecules27113420] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/28/2022] [Accepted: 05/24/2022] [Indexed: 11/29/2022]
Abstract
In this study, we aimed to isolate bacteria capable of degrading the polysaccharide ulvan from the green algae Ulva sp. (Chlorophyta, Ulvales, Ulvaceae) in marine environments. We isolated 13 ulvan-degrading bacteria and observed high diversity at the genus level. Further, the genera Paraglaciecola, Vibrio, Echinicola, and Algibacter, which can degrade ulvan, were successfully isolated for the first time from marine environments. Among the 13 isolates, only one isolate (Echinicola sp.) showed the ability not only to produce externally expressed ulvan lyase, but also to be periplasmic or on the cell surface. From the results of the full-genome analysis, lyase was presumed to be a member of the PL25 (BNR4) family of ulvan lyases, and the bacterium also contained the sequence for glycoside hydrolase (GH43, GH78 and GH88), which is characteristic of other ulvan-degrading bacteria. Notably, this bacterium has a unique ulvan lyase gene not previously reported.
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Wang D, Li Y, Han L, Yin C, Fu Y, Zhang Q, Zhao X, Li G, Han F, Yu W. Biochemical Properties of a New Polysaccharide Lyase Family 25 Ulvan Lyase TsUly25B from Marine Bacterium Thalassomonas sp. LD5. Mar Drugs 2022; 20:md20030168. [PMID: 35323467 PMCID: PMC8955879 DOI: 10.3390/md20030168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 01/21/2023] Open
Abstract
Marine macroalgae, contributing much to the bioeconomy, have inspired tremendous attention as sustainable raw materials. Ulvan, as one of the main structural components of green algae cell walls, can be degraded by ulvan lyase through the β-elimination mechanism to obtain oligosaccharides exhibiting several good physiological activities. Only a few ulvan lyases have been characterized until now. This thesis explores the properties of a new polysaccharide lyase family 25 ulvan lyase TsUly25B from the marine bacterium Thalassomonas sp. LD5. Its protein molecular weight was 54.54 KDa, and it was most active under the conditions of 60 °C and pH 9.0. The Km and kcat values were 1.01 ± 0.05 mg/mL and 10.52 ± 0.28 s−1, respectively. TsUly25B was salt-tolerant and NaCl can significantly improve its thermal stability. Over 80% of activity can be preserved after being incubated at 30 °C for two days when the concentration of NaCl in the solution is above 1 M, while 60% can be preserved after incubation at 40 °C for 10 h with 2 M NaCl. TsUly25B adopted an endolytic manner to degrade ulvan polysaccharides, and the main end-products were unsaturated ulvan disaccharides and tetrasaccharides. In conclusion, our research enriches the ulvan lyase library and advances the utilization of ulvan lyases in further fundamental research as well as ulvan oligosaccharides production.
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Affiliation(s)
- Danni Wang
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
| | - Yujiao Li
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
| | - Lu Han
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
| | - Chengying Yin
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
| | - Yongqing Fu
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
| | - Qi Zhang
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
| | - Xia Zhao
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
| | - Guoyun Li
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
| | - Feng Han
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
- Correspondence: (F.H.); (W.Y.); Tel.: +86-532-82032067 (F.H.); +86-532-82031680 (W.Y.)
| | - Wengong Yu
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (D.W.); (Y.L.); (L.H.); (C.Y.); (Y.F.); (Q.Z.); (X.Z.); (G.L.)
- Laboratory for Marine Drugs and Bioproducts of Qingdao, National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Key Laboratory of Marine Drugs, Ministry of Education, 5 Yushan Road, Qingdao 266003, China
- Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Department of Science & Technology of Shandong Province, 5 Yushan Road, Qingdao 266003, China
- Correspondence: (F.H.); (W.Y.); Tel.: +86-532-82032067 (F.H.); +86-532-82031680 (W.Y.)
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Marine microbial enzymes for the production of algal oligosaccharides and its bioactive potential for application as nutritional supplements. Folia Microbiol (Praha) 2022; 67:175-191. [PMID: 34997524 DOI: 10.1007/s12223-021-00943-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/20/2021] [Indexed: 01/02/2023]
Abstract
Marine macroalgae have a very high carbohydrate content due to complex algal polysaccharides (APS) like agar, alginate, and ulvan in their cell wall. Despite numerous reports on their biomedical properties, their hydrocolloid nature limits their applications. Algal oligosaccharides (AOS), which are hydrolyzed forms of complex APS, are gaining importance due to their low molecular weight, biocompatibility, bioactivities, safety, and solubility in water that makes it a lucrative alternative. The AOS produced through enzymatic hydrolysis using microbial enzymes have far-reaching applications because of its stereospecific nature. Identification and characterization of novel microorganisms producing APS hydrolyzing enzymes are the major bottlenecks for the efficient production of AOS. This review will discuss the marine microbial enzymes identified for AOS production and the bioactive potential of enzymatically produced AOS. This can improve our understanding of the biotechnological potential of microbial enzymes for the production of AOS and facilitate the sustainable utilization of algal biomass. Enzymatically produced AOS are shown to have bioactivities such as antioxidant, antiglycemic, prebiotic, immunomodulation, antiobesity or antihypercholesterolemia, anti-inflammatory, anticancer, and antimicrobial activity. The myriad of health benefits provided by the AOS is the need of the hour as there is an alarming increase in physiological disorders among a wide range of the global population.
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Tang T, Cao S, Zhu B, Li Q. Ulvan polysaccharide-degrading enzymes: An updated and comprehensive review of sources category, property, structure, and applications of ulvan lyases. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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12
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Rosmarinic Acid and Ulvan from Terrestrial and Marine Sources in Anti-Microbial Bionanosystems and Biomaterials. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11199249] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In order to increase their sustainability, antimicrobial renewable molecules are fundamental additions to consumer goods. Rosmarinic acid is extracted from several terrestrial plants and represents an effective anti-microbial agent. Ulvan, extracted from algae, is an anti-microbial polysaccharide. The present review is dedicated to discussing the sources and the extraction methodologies for obtaining rosmarinic acid and ulvan. Moreover, the preparation of bioanosystems, integrating the two molecules with organic or inorganic substrates, are reviewed as methodologies to increase their effectiveness and stability. Finally, the possibility of preparing functional biomaterials and anti-microbial final products is discussed, considering scientific literature. The performed analysis indicated that the production of both molecules is not yet performed with mature industrial technologies. Nevertheless, both molecules could potentially be used in the packaging, biomedical, pharmaceutical, cosmetic, sanitary and personal care sectors, despite some research being required for developing functional materials with specific properties to pave the way for many more applications.
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Production of Ulvan Oligosaccharides with Antioxidant and Angiotensin-Converting Enzyme-Inhibitory Activities by Microbial Enzymatic Hydrolysis. FERMENTATION-BASEL 2021. [DOI: 10.3390/fermentation7030160] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Seaweed oligosaccharides have attracted attention in food, agricultural, and medical applications recently. Compared to red and brown seaweeds, fewer studies have focused on the biological activity of green seaweed’s oligosaccharides. This study aimed to produce bioactive ulvan oligosaccharides via enzymatic hydrolysis from green seaweed Ulva lactuca. Ulvan, a water-soluble polysaccharide, was obtained by hot water extraction. Two isolated marine bacteria, Pseudomonas vesicularis MA103 and Aeromonas salmonicida MAEF108, were used to produce multiple hydrolases, such as ulvanolytic enzymes, amylase, cellulase, and xylanase, to degrade the ulvan extract. An ultrafiltration system was used to separate the enzymatic hydrolysate to acquire the ulvan oligosaccharides (UOS). The characteristics of the ulvan extract and the UOS were determined by yield, reducing sugar, uronic acid, sulfate group, and total phenols. The FT-IR spectrum indicated that the ulvan extract and the UOS presented the bands associated with O-H, C=O, C-O, and S=O stretching. Angiotensin I converting enzyme (ACE) inhibition and antioxidant activities in vitro were evaluated in the ulvan extract and the UOS. These results provide a practical approach to producing bioactive UOS by microbial enzymatic hydrolysis that can benefit the development of seaweed-based products at the industrial scale.
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Sulastri E, Lesmana R, Zubair MS, Elamin KM, Wathoni N. A Comprehensive Review on Ulvan Based Hydrogel and Its Biomedical Applications. Chem Pharm Bull (Tokyo) 2021; 69:432-443. [PMID: 33952853 DOI: 10.1248/cpb.c20-00763] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ulvan is a natural sulfated polysaccharide obtained from marine green algae composed of 3-sulfated rhamnoglucuronan as the main component. It has a unique chemical structure that rich of L-rhamnosa, D-glucuronic acid, and L-iduronic acid. Ulvan has a similar structure to glycosaminoglycans (GAGs) in mammals including chondroitin sulfate, dermatan sulfate, and heparan sulfate that has broad range applications for many years. Here, we provide an overview of ulvan based hydrogels for biomedical applications. Hydrogels are one of ulvan advances in polymer science for application in drug delivery, tissue engineering, and wound healing. This review presented an overview about functional information of ulvan based hydrogels and the promising potential in biomedicals collected from published papers in Scopus, PubMed, and Google Scholar. Other important aspects concerning properties, hydrogel-forming mechanisms, and ulvan based hydrogel developments were reported as well. As conclusion, ulvan showed interesting properties in forming hydrogels and promising advances in biomedical applications.
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Affiliation(s)
- Evi Sulastri
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran.,Department of Pharmacy, Faculty of Mathematics and Natural Sciences, Universitas Tadulako
| | - Ronny Lesmana
- Department of Anatomy, Physiology and Biology Cell, Faculty of Medicine, Universitas Padjadjaran
| | | | - Khaled M Elamin
- Global Center for Natural Resources Sciences, Faculty of Life Sciences, Kumamoto University
| | - Nasrul Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran
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Bäumgen M, Dutschei T, Bornscheuer UT. Marine Polysaccharides: Occurrence, Enzymatic Degradation and Utilization. Chembiochem 2021; 22:2247-2256. [PMID: 33890358 PMCID: PMC8360166 DOI: 10.1002/cbic.202100078] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/21/2021] [Indexed: 12/13/2022]
Abstract
Macroalgae species are fast growing and their polysaccharides are already used as food ingredient due to their properties as hydrocolloids or they have potential high value bioactivity. The degradation of these valuable polysaccharides to access the sugar components has remained mostly unexplored so far. One reason is the high structural complexity of algal polysaccharides, but also the need for suitable enzyme cocktails to obtain oligo- and monosaccharides. Among them, there are several rare sugars with high value. Recently, considerable progress was made in the discovery of highly specific carbohydrate-active enzymes able to decompose complex marine carbohydrates such as carrageenan, laminarin, agar, porphyran and ulvan. This minireview summarizes these achievements and highlights potential applications of the now accessible abundant renewable resource of marine polysaccharides.
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Affiliation(s)
- Marcus Bäumgen
- Department of Biotechnology & Enzyme CatalysisInstitute of Biochemistry, University of Greifswald17487GreifswaldGermany
| | - Theresa Dutschei
- Department of Biotechnology & Enzyme CatalysisInstitute of Biochemistry, University of Greifswald17487GreifswaldGermany
| | - Uwe T. Bornscheuer
- Department of Biotechnology & Enzyme CatalysisInstitute of Biochemistry, University of Greifswald17487GreifswaldGermany
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Xu F, Dong F, Sun XH, Cao HY, Fu HH, Li CY, Zhang XY, McMinn A, Zhang YZ, Wang P, Chen XL. Mechanistic Insights into Substrate Recognition and Catalysis of a New Ulvan Lyase of Polysaccharide Lyase Family 24. Appl Environ Microbiol 2021; 87:e0041221. [PMID: 33771786 PMCID: PMC8174760 DOI: 10.1128/aem.00412-21] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 03/22/2021] [Indexed: 11/20/2022] Open
Abstract
Ulvan is an important marine polysaccharide. Bacterial ulvan lyases play important roles in ulvan degradation and marine carbon cycling. Until now, only a small number of ulvan lyases have been characterized. Here, a new ulvan lyase, Uly1, belonging to polysaccharide lyase family 24 (PL24) from the marine bacterium Catenovulum maritimum, is characterized. The optimal temperature and pH for Uly1 to degrade ulvan are 40°C and pH 9.0, respectively. Uly1 degrades ulvan polysaccharides in the endolytic manner, mainly producing ΔRha3S, consisting of an unsaturated 4-deoxy-l-threo-hex-4-enopyranosiduronic acid and a 3-O-sulfated α-l-rhamnose. The structure of Uly1 was resolved at a 2.10-Å resolution. Uly1 adopts a seven-bladed β-propeller architecture. Structural and site-directed mutagenesis analyses indicate that four highly conserved residues, H128, H149, Y223, and R239, are essential for catalysis. H128 functions as both the catalytic acid and base, H149 and R239 function as the neutralizers, and Y223 plays a supporting role in catalysis. Structural comparison and sequence alignment suggest that Uly1 and many other PL24 enzymes may directly bind the substrate near the catalytic residues for catalysis, different from the PL24 ulvan lyase LOR_107, which adopts a two-stage substrate binding process. This study provides new insights into ulvan lyases and ulvan degradation. IMPORTANCE Ulvan is a major cell wall component of green algae of the genus Ulva. Many marine heterotrophic bacteria can produce extracellular ulvan lyases to degrade ulvan for a carbon nutrient. In addition, ulvan has a range of physiological bioactivities based on its specific chemical structure. Ulvan lyase thus plays an important role in marine carbon cycling and has great potential in biotechnological applications. However, only a small number of ulvan lyases have been characterized over the past 10 years. Here, based on biochemical and structural analyses, a new ulvan lyase of polysaccharide lyase family 24 is characterized, and its substrate recognition and catalytic mechanisms are revealed. Moreover, a new substrate binding process adopted by PL24 ulvan lyases is proposed. This study offers a better understanding of bacterial ulvan lyases and is helpful for studying the application potentials of ulvan lyases.
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Affiliation(s)
- Fei Xu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Fang Dong
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Xiao-Hui Sun
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Hai-Yan Cao
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Hui-Hui Fu
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
| | - Chun-Yang Li
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
| | - Xi-Ying Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Andrew McMinn
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
| | - Yu-Zhong Zhang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
- Marine Biotechnology Research Center, Shandong University, Qingdao, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Peng Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
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Low density lipoprotein (LDL) apheresis from blood plasma via anti-biofouling tuned membrane incorporated with graphene oxide-modified carrageenan. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118878] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Mondal R, Ohnishi K. Characterization of Glaciecola sp. enzymes involved in the late steps of degradation of sulfated polysaccharide ulvan extracted from Ulva ohnoi. Biochem Biophys Res Commun 2020; 523:441-445. [PMID: 31875842 DOI: 10.1016/j.bbrc.2019.12.081] [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: 12/12/2019] [Accepted: 12/17/2019] [Indexed: 10/25/2022]
Abstract
Ulvan is a complex water-soluble sulfated polysaccharide in the cell wall of green algae belonging to genus Ulva. It is composed of l-rhamnose-3-sulfate (Rha3S), glucuronic acid (GluA), iduronic acid (IduA), and d-xylose (Xyl) distributed in three repetition moieties. The first step of a bacterial ulvan degradation is the cleavage of the β-glycosidic bond between Rha3S and GluA/IduA through a β-elimination mechanism by a ulvan lyase to produce oligo-ulvans with unsaturated 4-deoxy-L-threo-hex-4-enopyranosiduronate (Δ) at the non-reducing end. We have identified an ulvan associated polysaccharide utilization locus (PUL) residing between two ulvan lyase genes belonging to families of polysaccharide lyase 24 (PL24) and PL25 in the genome of a ulvan-utilizing bacterium Glaciecola KUL10 strain. The PUL contains many genes responsible for oligo-ulvan degradation. Among them, we demonstrated that both KUL10_26540 and KUL10_26770 had an unsaturated β-glucuronyl hydrolase activity to produce Rha3S and oligosaccharides, such as Rha3S-GluA-Rha3S, Rha3S-IduA-Rha3S and, Rha3S-Xyl-Rha3S, by releasing 5-dehydro-4-deoxy-d-glucuronate. KUL10_26540 showed much higher activity than KUL10_26770 and was more active on disaccharide than tetrasaccharide. We also found a rhamnosidase activity on four KUL10 gene products, although they could not react on the sulfated rhamnose.
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Affiliation(s)
- Ratna Mondal
- The United Graduate School of Agricultural Sciences, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime, 790-8566, Japan
| | - Kouhei Ohnishi
- Research Institute of Molecular Genetics, Kochi University, 200 Monobe, Nankoku, Kochi, 783-8502, Japan.
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Qiao L, Yang X, Xie R, Du C, Chi Y, Zhang J, Wang P. Efficient production of ulvan lyase from Ulva prolifera by Catenovulum sp. LP based on stage-controlled fermentation strategy. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101812] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Li Q, Hu F, Zhu B, Ni F, Yao Z. Insights into ulvan lyase: review of source, biochemical characteristics, structure and catalytic mechanism. Crit Rev Biotechnol 2020; 40:432-441. [PMID: 32050804 DOI: 10.1080/07388551.2020.1723486] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Ulvan, a kind of polyanionic heteropolysaccharide consisting of 3-sulfated rhamnose, uronic acids (iduronic acid and glucuronic acid) and xylose, has been widely applied in food and cosmetic industries. In addition, ulvan can be converted into fermentable monosaccharides through the cascade system of carbohydrate-active enzymes. Ulvan lyases can degrade ulvan into ulvan oligosaccharides, which is the first step in the fully degradation of ulvan. Various ulvan lyases have been cloned and characterized from marine bacteria and grouped into five polysaccharide lyase (PL) families, namely: PL24, PL25, PL28, PL37 and PL40 families. The elucidation of the biochemical characterization, action pattern and catalytic mechanism of ulvan lyase would definitely enhance our understanding of the deep utilization of marine bioresource and marine carbon cycling. In this review, we summarized the recent progresses about the source and biochemical characteristics of ulvan lyase. Additionally, the structural characteristics and catalytic mechanisms have been introduced in detail. This comprehensive information should be helpful regarding the application of ulvan lyases.
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Affiliation(s)
- Qian Li
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, P.R. China
| | - Fu Hu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, P.R. China
| | - Benwei Zhu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, P.R. China
| | - Fang Ni
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, P.R. China
| | - Zhong Yao
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, P.R. China
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Draft Genome Sequences of Bacterial Strains Capable of Degrading Ulvan from the Green Alga Ulva ohnoi. Microbiol Resour Announc 2020; 9:9/3/e01483-19. [PMID: 31948973 PMCID: PMC6965591 DOI: 10.1128/mra.01483-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We present here the draft genome sequences of four marine bacterial strains which can use ulvan as their sole carbon source. We used ulvan extracted from the green alga Ulva ohnoi. Each bacterium contains a polysaccharide-utilizing locus, which is necessary for the complete degradation of ulvan. We present here the draft genome sequences of four marine bacterial strains which can use ulvan as their sole carbon source. We used ulvan extracted from the green alga Ulva ohnoi. Each bacterium contains a polysaccharide-utilizing locus, which is necessary for the complete degradation of ulvan.
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Qin HM, Gao D, Zhu M, Li C, Zhu Z, Wang H, Liu W, Tanokura M, Lu F. Biochemical characterization and structural analysis of ulvan lyase from marine Alteromonas sp. reveals the basis for its salt tolerance. Int J Biol Macromol 2019; 147:1309-1317. [PMID: 31751708 DOI: 10.1016/j.ijbiomac.2019.10.095] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/09/2019] [Accepted: 10/09/2019] [Indexed: 01/09/2023]
Abstract
Marine macroalgae have gained considerable attention as renewable biomass sources. Ulvan is a water-soluble anionic polysaccharide, and its depolymerization into fermentable monosaccharides has great potential for the production of bioethanol or high-value food additives. Ulvan lyase from Alteromonas sp. (AsPL) utilizes a β-elimination mechanism to cleave the glycosidic bond between rhamnose 3-sulfate and glucuronic acid, forming an unsaturated uronic acid at the non-reducing end. AsPL was active in the temperature range of 30-50 °C and pH values ranging from 7.5 to 9.5. Furthermore, AsPL was found to be halophilic, showing high activity and stability in the presence of up to 2.5 M NaCl. The apparent Km and kcat values of AsPL are 3.19 ± 0.37 mg mL-1 and 4.19 ± 0.21 s-1, respectively. Crystal structure analysis revealed that AsPL adopts a β-propeller fold with four anti-parallel β-strands in each of the seven propeller blades. The acid residues at the protein surface and two Ca2+ coordination sites contribute to its salt tolerance. The research on ulvan lyase has potential commercial value in the utilization of algal resources for biofuel production to relieve the environmental burden of petrochemicals.
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Affiliation(s)
- Hui-Min Qin
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, National Engineering Laboratory for Industrial Enzymes, Tianjin 300457, PR China
| | - Dengke Gao
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, National Engineering Laboratory for Industrial Enzymes, Tianjin 300457, PR China
| | - Menglu Zhu
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, National Engineering Laboratory for Industrial Enzymes, Tianjin 300457, PR China
| | - Chao Li
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, National Engineering Laboratory for Industrial Enzymes, Tianjin 300457, PR China
| | - Zhangliang Zhu
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, National Engineering Laboratory for Industrial Enzymes, Tianjin 300457, PR China
| | - Hongbin Wang
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, National Engineering Laboratory for Industrial Enzymes, Tianjin 300457, PR China
| | - Weidong Liu
- Industrial Enzymes National Engineering Laboratory, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, PR China.
| | - Masaru Tanokura
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, National Engineering Laboratory for Industrial Enzymes, Tianjin 300457, PR China; Laboratory of Basic Science on Healthy Longevity, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-8657, Japan.
| | - Fuping Lu
- Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, National Engineering Laboratory for Industrial Enzymes, Tianjin 300457, PR China.
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Konasani VR, Jin C, Karlsson NG, Albers E. Ulvan lyase from Formosa agariphila and its applicability in depolymerisation of ulvan extracted from three different Ulva species. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.10.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Konasani VR, Jin C, Karlsson NG, Albers E. A novel ulvan lyase family with broad-spectrum activity from the ulvan utilisation loci of Formosa agariphila KMM 3901. Sci Rep 2018; 8:14713. [PMID: 30279430 PMCID: PMC6168547 DOI: 10.1038/s41598-018-32922-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 09/17/2018] [Indexed: 11/19/2022] Open
Abstract
Ulvan, which is one of the major structural polysaccharides of the cell walls of green macroalgae, is degraded by ulvan lyases via the β-elimination mechanism with the release of oligosaccharides that have unsaturated 4-deoxy-L-threo-hex-4-enopyranosiduronic acid (∆) at the non-reducing end. These ulvan lyases belong to the PL24 or PL25 or PL28 family in the CAZy database. In this study, we identify and biochemically characterise a periplasmic novel broad-spectrum ulvan lyase from Formosa agariphila KMM 3901. The lyase was overexpressed in Escherichia coli, and the purified recombinant enzyme depolymerised ulvan in an endolytic manner with a Km of 0.77 mg/ml, and displayed optimum activity at 40 °C and pH 8. This lyase also degraded heparan sulphate and chondroitin sulphate. Detailed analyses of the end-products of the enzymatic degradation of ulvan using 1H- and 13C-NMR and LC-MS revealed an unsaturated disaccharide (∆Rha3S) and a tetrasaccharide (∆Rha3S-Xyl-Rha) as the principal end-products. In contrast to the previously described ulvan lyases, this novel lyase is mostly composed of α-helices that form an (α/α)6 incomplete toroid domain and displays a remarkably broad-spectrum activity. This novel lyase is the first member of a new family of ulvan lyases.
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Affiliation(s)
- Venkat Rao Konasani
- Industrial Biotechnology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Chunsheng Jin
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Eva Albers
- Industrial Biotechnology Division, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden.
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