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The system of xylogalactans from the red seaweed Jania rubens (Corallinales, Rhodophyta).
Carbohydr Res. 2008 Oct 13; 343(15):2613-22.CR

Abstract

The main acidic polysaccharides from the red seaweed Jania rubens share the general characteristics of corallinans (agar-like xylogalactans). After fractionation by ion-exchange chromatography, ten fractions were separated and characterized by sugar composition, other components, methylation, ethylation, desulfation-methylation, and NMR analyses. The main group of fractions carry the agaran disaccharidic repeating unit [-->3)-beta-D-Gal-(1-->4)-alpha-L-Gal-(1-->] substituted mainly on O-6 of the beta-D-Gal unit by beta-xylosyl side stubs, and less with sulfate or methoxyl groups, and also on O-2 of the alpha-l-Gal unit with methoxyl or sulfate, or less on O-3 of the same unit with methoxyl groups. These features are somehow common to the four members of the order already studied. However, a sugar uncommon to the order appears in moderate proportions for all the fractions: it is 3,6-anhydro-l-galactose (partly sulfated or methoxylated on O-2) replacing the L-Gal unit. Besides, several other structural features never found in the order (and uncommon in any polysaccharide) appear in some minor fractions: the presence of side stubs of 2,3-di- and 3-O-methyl-D-galactose, and also part of the 3-O-methyl-L-galactose acting as side stubs. These results show that, although the main features of the corallinean xylogalactans are common to all the species studied, each one has minor characteristics of its own.

Authors+Show Affiliations

Departamento de Química Orgánica, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18667196

Citation

Navarro, Diego A., and Carlos A. Stortz. "The System of Xylogalactans From the Red Seaweed Jania Rubens (Corallinales, Rhodophyta)." Carbohydrate Research, vol. 343, no. 15, 2008, pp. 2613-22.
Navarro DA, Stortz CA. The system of xylogalactans from the red seaweed Jania rubens (Corallinales, Rhodophyta). Carbohydr Res. 2008;343(15):2613-22.
Navarro, D. A., & Stortz, C. A. (2008). The system of xylogalactans from the red seaweed Jania rubens (Corallinales, Rhodophyta). Carbohydrate Research, 343(15), 2613-22. https://doi.org/10.1016/j.carres.2008.06.015
Navarro DA, Stortz CA. The System of Xylogalactans From the Red Seaweed Jania Rubens (Corallinales, Rhodophyta). Carbohydr Res. 2008 Oct 13;343(15):2613-22. PubMed PMID: 18667196.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The system of xylogalactans from the red seaweed Jania rubens (Corallinales, Rhodophyta). AU - Navarro,Diego A, AU - Stortz,Carlos A, Y1 - 2008/06/19/ PY - 2008/05/16/received PY - 2008/06/09/revised PY - 2008/06/11/accepted PY - 2008/8/1/pubmed PY - 2008/12/17/medline PY - 2008/8/1/entrez SP - 2613 EP - 22 JF - Carbohydrate research JO - Carbohydr Res VL - 343 IS - 15 N2 - The main acidic polysaccharides from the red seaweed Jania rubens share the general characteristics of corallinans (agar-like xylogalactans). After fractionation by ion-exchange chromatography, ten fractions were separated and characterized by sugar composition, other components, methylation, ethylation, desulfation-methylation, and NMR analyses. The main group of fractions carry the agaran disaccharidic repeating unit [-->3)-beta-D-Gal-(1-->4)-alpha-L-Gal-(1-->] substituted mainly on O-6 of the beta-D-Gal unit by beta-xylosyl side stubs, and less with sulfate or methoxyl groups, and also on O-2 of the alpha-l-Gal unit with methoxyl or sulfate, or less on O-3 of the same unit with methoxyl groups. These features are somehow common to the four members of the order already studied. However, a sugar uncommon to the order appears in moderate proportions for all the fractions: it is 3,6-anhydro-l-galactose (partly sulfated or methoxylated on O-2) replacing the L-Gal unit. Besides, several other structural features never found in the order (and uncommon in any polysaccharide) appear in some minor fractions: the presence of side stubs of 2,3-di- and 3-O-methyl-D-galactose, and also part of the 3-O-methyl-L-galactose acting as side stubs. These results show that, although the main features of the corallinean xylogalactans are common to all the species studied, each one has minor characteristics of its own. SN - 0008-6215 UR - https://www.unboundmedicine.com/medline/citation/18667196/The_system_of_xylogalactans_from_the_red_seaweed_Jania_rubens__Corallinales_Rhodophyta__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0008-6215(08)00331-5 DB - PRIME DP - Unbound Medicine ER -