STRUCTURE OF THE CORALLINANS - SULFATED XYLOGALACTANS FROM CORALLINA-OFFICINALIS

被引：30

作者：

CASES, MR ^{[1
]}

STORTZ, CA ^{[1
]}

CEREZO, AS ^{[1
]}

机构：

[1] UNIV BUENOS AIRES,FAC CIENCIAS EXACTAS & NAT,DEPT QUIM ORGAN,RA-1428 BUENOS AIRES,ARGENTINA

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 1994年 / 16卷 / 02期

关键词：

CORALLINA OFFICINALIS; XYLOGALACTANS; ETHYLATION;

D O I：

10.1016/0141-8130(94)90021-3

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The structure of the main polysaccharides extracted from the red seaweed Corallina officinalis was characterized by methylation, desulfation-methy[ation, and ethylation analysis. The backbone has an alternating -->4)-alpha-L-Gal-(1-->3)-beta-D-Gal-(1--> structure. The C6 position of 3-linked units is substituted mainly by beta-D-xylosyl side stubs but also by sulfate eater groups and minor amounts of 4-O-methylgalactosyl side stubs. Positions C2 and C3 of 4-linked units also carry sulfate or methoxyl as substituents, but never both together in the same unit. Minor fractions modulate this structure with other irregularities, such as higher branching or, possibly, unusual (1-->2) or (1-->6) linkages.

引用

页码：93 / 97

页数：5

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