1
|
Reyes-Weiss DS, Bligh M, Rhein-Knudsen N, Hehemann JH, Liebeke M, Westereng B, Horn SJ. Application of MALDI-MS for characterization of fucoidan hydrolysates and screening of endo-fucoidanase activity. Carbohydr Polym 2024; 340:122317. [PMID: 38858030 DOI: 10.1016/j.carbpol.2024.122317] [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: 04/05/2024] [Revised: 05/22/2024] [Accepted: 05/24/2024] [Indexed: 06/12/2024]
Abstract
Brown macroalgae synthesize large amounts of fucoidans, sulfated fucose-containing polysaccharides, in the ocean. Fucoidans are of importance for their recently discovered contribution to marine carbon dioxide sequestration and due to their potential applications in biotechnology and biomedicine. However, fucoidans have high intra- and intermolecular diversity that challenges assignment of structure to biological function and the development of applications. Fucoidan-active enzymes may be used to simplify this diversity by producing defined oligosaccharides more applicable for structural refinement, characterization, and structure to function assignment for example via bioassays. In this study, we combined MALDI mass spectrometry with biocatalysis to show that the endo-fucoidanases P5AFcnA and Wv323 can produce defined oligosaccharide structures directly from unrefined macroalgal biomass. P5AFcnA released oligosaccharides from seven commercial fucoidan extracts in addition to unrefined biomass of three macroalgae species indicating a broadly applicable approach reproducible across 10 species. Both MALDI-TOF/TOF and AP-MALDI-Orbitrap systems were used, demonstrating that the approach is not instrument-specific and exploiting their combined high-throughput and high-resolution capabilities. Overall, the combination of MALDI-MS and endo-fucoidanase assays offers high-throughput evaluation of fucoidan samples and also enables extraction of defined oligosaccharides of known structure from unrefined seaweed biomass.
Collapse
Affiliation(s)
- Diego S Reyes-Weiss
- Department of Chemistry, Biotechnology, and Life Science, Norwegian University of Life Sciences (NMBU), Christian Magnus Falsens vei 18, 1433 Ås, Norway
| | - Margot Bligh
- University of Bremen, MARUM Centre for Marine Environmental Sciences, Leobener Str. 8, D-28359 Bremen, Germany; Max Planck Institute for Marine Microbiology, Celsiusstr. 1, D-28359 Bremen, Germany
| | - Nanna Rhein-Knudsen
- Department of Chemistry, Biotechnology, and Life Science, Norwegian University of Life Sciences (NMBU), Christian Magnus Falsens vei 18, 1433 Ås, Norway
| | - Jan-Hendrik Hehemann
- University of Bremen, MARUM Centre for Marine Environmental Sciences, Leobener Str. 8, D-28359 Bremen, Germany; Max Planck Institute for Marine Microbiology, Celsiusstr. 1, D-28359 Bremen, Germany
| | - Manuel Liebeke
- Max Planck Institute for Marine Microbiology, Celsiusstr. 1, D-28359 Bremen, Germany; University of Kiel, Institute for Human Nutrition and Food Science, Heinrich-Hecht-Platz 10, 24118 Kiel, Germany
| | - Bjørge Westereng
- Department of Chemistry, Biotechnology, and Life Science, Norwegian University of Life Sciences (NMBU), Christian Magnus Falsens vei 18, 1433 Ås, Norway
| | - Svein Jarle Horn
- Department of Chemistry, Biotechnology, and Life Science, Norwegian University of Life Sciences (NMBU), Christian Magnus Falsens vei 18, 1433 Ås, Norway.
| |
Collapse
|
2
|
Marchetti A, Orlando M, Bombardi L, Fusco S, Mangiagalli M, Lotti M. Evolutionary history and activity towards oligosaccharides and polysaccharides of GH3 glycosidases from an Antarctic marine bacterium. Int J Biol Macromol 2024:133449. [PMID: 38944065 DOI: 10.1016/j.ijbiomac.2024.133449] [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: 01/22/2024] [Revised: 05/30/2024] [Accepted: 06/24/2024] [Indexed: 07/01/2024]
Abstract
Glycoside hydrolases (GHs) are pivotal in the hydrolysis of the glycosidic bonds of sugars, which are the main carbon and energy sources. The genome of Marinomonas sp. ef1, an Antarctic bacterium, contains three GHs belonging to family 3. These enzymes have distinct architectures and low sequence identity, suggesting that they originated from separate horizontal gene transfer events. M-GH3_A and M-GH3_B, were found to differ in cold adaptation and substrate specificity. M-GH3_A is a bona fide cold-active enzyme since it retains 20 % activity at 10 °C and exhibits poor long-term thermal stability. On the other hand, M-GH3_B shows mesophilic traits with very low activity at 10 °C (< 5 %) and higher long-term thermal stability. Substrate specificity assays highlight that M-GH3_A is a promiscuous β-glucosidase mainly active on cellobiose and cellotetraose, whereas M-GH3_B is a β-xylosidase active on xylan and arabinoxylan. Structural analysis suggests that such functional differences are due to their differently shaped active sites. The active site of M-GH3_A is wider but has a narrower entrance compared to that of M-GH3_B. Genome-based prediction of metabolic pathways suggests that Marinomonas sp. ef1 can use monosaccharides derived from the GH3-catalyzed hydrolysis of oligosaccharides either as a carbon source or for producing osmolytes.
Collapse
Affiliation(s)
- Alessandro Marchetti
- Department of Biotechnology and Biosciences, University of Milano Bicocca, Piazza della Scienza 2, Milano 20126, Italy
| | - Marco Orlando
- Department of Biotechnology and Biosciences, University of Milano Bicocca, Piazza della Scienza 2, Milano 20126, Italy
| | - Luca Bombardi
- Biochemistry and Industrial Biotechnology (BIB) Laboratory, Department of Biotechnology, University of Verona, Verona, Italy
| | - Salvatore Fusco
- Biochemistry and Industrial Biotechnology (BIB) Laboratory, Department of Biotechnology, University of Verona, Verona, Italy
| | - Marco Mangiagalli
- Department of Biotechnology and Biosciences, University of Milano Bicocca, Piazza della Scienza 2, Milano 20126, Italy.
| | - Marina Lotti
- Department of Biotechnology and Biosciences, University of Milano Bicocca, Piazza della Scienza 2, Milano 20126, Italy
| |
Collapse
|
3
|
Crawford CJ, Schultz-Johansen M, Luong P, Vidal-Melgosa S, Hehemann JH, Seeberger PH. Automated Synthesis of Algal Fucoidan Oligosaccharides. J Am Chem Soc 2024. [PMID: 38916244 DOI: 10.1021/jacs.4c02348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Fucoidan, a sulfated polysaccharide found in algae, plays a central role in marine carbon sequestration and exhibits a wide array of bioactivities. However, the molecular diversity and structural complexity of fucoidan hinder precise structure-function studies. To address this, we present an automated method for generating well-defined linear and branched α-fucan oligosaccharides. Our syntheses include oligosaccharides with up to 20 cis-glycosidic linkages, diverse branching patterns, and 11 sulfate monoesters. In this study, we demonstrate the utility of these oligosaccharides by (i) characterizing two endo-acting fucoidan glycoside hydrolases (GH107), (ii) utilizing them as standards for NMR studies to confirm suggested structures of algal fucoidans, and (iii) developing a fucoidan microarray. This microarray enabled the screening of the molecular specificity of four monoclonal antibodies (mAb) targeting fucoidan. It was found that mAb BAM4 has cross-reactivity to β-glucans, while mAb BAM2 has reactivity to fucoidans with 4-O-sulfate esters. Knowledge of the mAb BAM2 epitope specificity provided evidence that a globally abundant marine diatom, Thalassiosira weissflogii, synthesizes a fucoidan with structural homology to those found in brown algae. Automated glycan assembly provides access to fucoidan oligosaccharides. These oligosaccharides provide the basis for molecular level investigations into fucoidan's roles in medicine and carbon sequestration.
Collapse
Affiliation(s)
- Conor J Crawford
- Max Planck Institute for Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Mikkel Schultz-Johansen
- Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359 Bremen, Germany
- MARUM, Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany
| | - Phuong Luong
- Max Planck Institute for Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Silvia Vidal-Melgosa
- Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359 Bremen, Germany
- MARUM, Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany
| | - Jan-Hendrik Hehemann
- Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359 Bremen, Germany
- MARUM, Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany
| | - Peter H Seeberger
- Max Planck Institute for Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| |
Collapse
|
4
|
Dutschei T, Beidler I, Bartosik D, Seeßelberg JM, Teune M, Bäumgen M, Ferreira SQ, Heldmann J, Nagel F, Krull J, Berndt L, Methling K, Hein M, Becher D, Langer P, Delcea M, Lalk M, Lammers M, Höhne M, Hehemann JH, Schweder T, Bornscheuer UT. Marine Bacteroidetes enzymatically digest xylans from terrestrial plants. Environ Microbiol 2023; 25:1713-1727. [PMID: 37121608 DOI: 10.1111/1462-2920.16390] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 04/18/2023] [Indexed: 05/02/2023]
Abstract
Marine Bacteroidetes that degrade polysaccharides contribute to carbon cycling in the ocean. Organic matter, including glycans from terrestrial plants, might enter the oceans through rivers. Whether marine bacteria degrade structurally related glycans from diverse sources including terrestrial plants and marine algae was previously unknown. We show that the marine bacterium Flavimarina sp. Hel_I_48 encodes two polysaccharide utilization loci (PULs) which degrade xylans from terrestrial plants and marine algae. Biochemical experiments revealed activity and specificity of the encoded xylanases and associated enzymes of these PULs. Proteomics indicated that these genomic regions respond to glucuronoxylans and arabinoxylans. Substrate specificities of key enzymes suggest dedicated metabolic pathways for xylan utilization. Some of the xylanases were active on different xylans with the conserved β-1,4-linked xylose main chain. Enzyme activity was consistent with growth curves showing Flavimarina sp. Hel_I_48 uses structurally different xylans. The observed abundance of related xylan-degrading enzyme repertoires in genomes of other marine Bacteroidetes indicates similar activities are common in the ocean. The here presented data show that certain marine bacteria are genetically and biochemically variable enough to access parts of structurally diverse xylans from terrestrial plants as well as from marine algal sources.
Collapse
Affiliation(s)
- Theresa Dutschei
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University Greifswald, Greifswald, Germany
| | - Irena Beidler
- Department of Pharmaceutical Biotechnology, Institute of Pharmacy, University of Greifswald, Greifswald, Germany
| | - Daniel Bartosik
- Department of Pharmaceutical Biotechnology, Institute of Pharmacy, University of Greifswald, Greifswald, Germany
- Institute of Marine Biotechnology e.V., Greifswald, Germany
| | - Julia-Maria Seeßelberg
- Department of Protein Biochemistry, Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Michelle Teune
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University Greifswald, Greifswald, Germany
| | - Marcus Bäumgen
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University Greifswald, Greifswald, Germany
| | - Soraia Querido Ferreira
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University Greifswald, Greifswald, Germany
| | - Julia Heldmann
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University Greifswald, Greifswald, Germany
| | - Felix Nagel
- Department of Biophysical Chemistry, Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Joris Krull
- Institute of Marine Biotechnology e.V., Greifswald, Germany
- Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
| | - Leona Berndt
- Department of Synthetic and Structural Biochemistry, Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Karen Methling
- Department of Cellular Biochemistry and Metabolomics, Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Martin Hein
- Department of Organic Chemistry, Institute of Chemistry, University of Rostock, Rostock, Germany
| | - Dörte Becher
- Department of Microbial Proteomics, Institute of Microbiology, University of Greifswald, Greifswald, Germany
| | - Peter Langer
- Department of Organic Chemistry, Institute of Chemistry, University of Rostock, Rostock, Germany
| | - Mihaela Delcea
- Department of Biophysical Chemistry, Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Michael Lalk
- Department of Cellular Biochemistry and Metabolomics, Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Michael Lammers
- Department of Synthetic and Structural Biochemistry, Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Matthias Höhne
- Department of Protein Biochemistry, Institute of Biochemistry, University of Greifswald, Greifswald, Germany
| | - Jan-Hendrik Hehemann
- Institute of Marine Biotechnology e.V., Greifswald, Germany
- Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
| | - Thomas Schweder
- Department of Pharmaceutical Biotechnology, Institute of Pharmacy, University of Greifswald, Greifswald, Germany
- Institute of Marine Biotechnology e.V., Greifswald, Germany
| | - Uwe T Bornscheuer
- Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University Greifswald, Greifswald, Germany
| |
Collapse
|
5
|
Dionisi HM, Lozada M, Campos E. Diversity of GH51 α-L-arabinofuranosidase homolog sequences from subantarctic intertidal sediments. Biologia (Bratisl) 2023. [DOI: 10.1007/s11756-023-01382-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|
6
|
Buck-Wiese H, Andskog MA, Nguyen NP, Bligh M, Asmala E, Vidal-Melgosa S, Liebeke M, Gustafsson C, Hehemann JH. Fucoid brown algae inject fucoidan carbon into the ocean. Proc Natl Acad Sci U S A 2023; 120:e2210561119. [PMID: 36584294 PMCID: PMC9910443 DOI: 10.1073/pnas.2210561119] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 11/02/2022] [Indexed: 01/01/2023] Open
Abstract
Brown algae annually convert gigatons of carbon dioxide into carbohydrates, including the complex extracellular matrix polysaccharide fucoidan. Due to its persistence in the environment, fucoidan is potentially a pathway for marine carbon sequestration. Rates of fucoidan secretion by brown algae remain unknown due to the challenge of identifying and quantifying complex polysaccharides in seawater. We adapted the techniques of anion exchange chromatography, enzyme-linked immunosorbent assay, and biocatalytic enzyme-based assay for detection and quantification of fucoidan. We found the brown alga Fucus vesiculosus at the Baltic Sea coast of south-west Finland to secrete 0.3% of their biomass as fucoidan per day. Dissolved fucoidan concentrations in seawater adjacent to algae reached up to 0.48 mg L-1. Fucoidan accumulated during incubations of F. vesiculosus, significantly more in light than in darkness. Maximum estimation by acid hydrolysis indicated fucoidan secretion at a rate of 28 to 40 mg C kg-1 h-1, accounting for 44 to 50% of all exuded dissolved organic carbon. Composed only of carbon, oxygen, hydrogen, and sulfur, fucoidan secretion does not consume nutrients enabling carbon sequestration independent of algal growth. Extrapolated over a year, the algae sequester more carbon into secreted fucoidan than their biomass. The global utility of fucoidan secretion is an alternative pathway for carbon dioxide removal by brown algae without the need to harvest or bury algal biomass.
Collapse
Affiliation(s)
- Hagen Buck-Wiese
- Max Planck Institute for Marine Microbiology, 28359Bremen, Germany
- University of Bremen, Center for Marine Environmental Sciences, MARUM, 28359Bremen, Germany
| | - Mona A. Andskog
- Centre for Coastal Biogeochemistry, Southern Cross University, 2480Lismore, Australia
| | - Nguyen P. Nguyen
- Max Planck Institute for Marine Microbiology, 28359Bremen, Germany
- University of Bremen, Center for Marine Environmental Sciences, MARUM, 28359Bremen, Germany
| | - Margot Bligh
- Max Planck Institute for Marine Microbiology, 28359Bremen, Germany
- University of Bremen, Center for Marine Environmental Sciences, MARUM, 28359Bremen, Germany
| | - Eero Asmala
- Geological Survey of Finland, Environmental Solutions, 02151Espoo, Finland
| | - Silvia Vidal-Melgosa
- Max Planck Institute for Marine Microbiology, 28359Bremen, Germany
- University of Bremen, Center for Marine Environmental Sciences, MARUM, 28359Bremen, Germany
| | - Manuel Liebeke
- Max Planck Institute for Marine Microbiology, 28359Bremen, Germany
| | - Camilla Gustafsson
- University of Helsinki, Tvärminne Zoological Station, 10900Hanko, Finland
| | - Jan-Hendrik Hehemann
- Max Planck Institute for Marine Microbiology, 28359Bremen, Germany
- University of Bremen, Center for Marine Environmental Sciences, MARUM, 28359Bremen, Germany
| |
Collapse
|