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An Agaroid-Carrageenan Hybrid Type Backbone Structure for the Antithrombotic Sulfated Polysaccharide from Grateloupia indica Boergensen (Halymeniales, Rhodophyta)
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A. K. Sen
Published/Copyright:
June 1, 2005
Abstract
The water-soluble antithrombotic polysaccharide sulfate fraction designated GI-1 was isolated from the marine red alga Grateloupia indica. It consists mainly of D-galactose (Gal), L-Gal, 3,6-anhydro-D-galactose (D-AnGal) and 3,6-anhydro L-galactose (L-AnGal). On the basis of the results from 13C NMR and methylation analysis of completely desulfated GI-1, we assigned a typical agarocolloid-carrageenan hybrid type of the backbone consisting of both disaccharide repeating units, [→3)β-D-Gal(1→4)α-D-Gal(1→] and [→3)β-D-Gal(1→4)α-LGal( 1→]. In addition, two repeating units, [→3)β-D-Gal(1→4)α-D-AnGal(1→] and [→3)β-D-Gal(1→4)α-L-AnGal(1→], were also suggested for the native GI-1 from partial methanolysis and 13C NMR studies.
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Published Online: 2005-06-01
Published in Print: 2002-07-04
Copyright © 2002 by Walter de Gruyter GmbH & Co. KG
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Articles in the same Issue
- Comparative Sensitivity of Seven Marine Microalgae to Cumulative Exposure to Ultraviolet-B Radiation with Daily Increasing Doses
- Microspatial Variability Inside Epilithic Algal Communities within Territories of the Damselfish Stegastes nigricans at La Réunion (Indian Ocean)
- Ultrastructure and Taxonomy of Sporocladopsis novae-zelandiae (Ulvophyceae, Chlorophyta)
- An Agaroid-Carrageenan Hybrid Type Backbone Structure for the Antithrombotic Sulfated Polysaccharide from Grateloupia indica Boergensen (Halymeniales, Rhodophyta)
- Chemical Composition of the Brown Alga Padina pavonia (L.) Gaill. from the Adriatic Sea
- Spatial and Seasonal Distribution of Seaweeds on Coral Reefs from Southern Bahia, Brazil
- Effects of Salinity on Growth and Toxin Production of a Noxious Phytoflagellate, Heterosigma akashiwo (Raphidophyceae)
- Monthly Monitoring of Domoic Acid Producer Pseudo-nitzschia multiseries (Hasle) Hasle Using Species-Specific DNA Probes and WGA Lectins and Abundance of Pseudo-nitzschia Species (Bacillariophyceae) from Chinhae Bay, Korea
- The Structures of the Polysaccharides from Two Lophurella Species as Determined by 13C NMR Spectroscopy
- Notes on Marine Algae Collected in Guinea-Bissau, Tropical West Africa
- Predaea goffiana sp. nov., (Nemastomataceae, Rhodophyta) from Puerto Rico, Caribbean Sea
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