A nearly idealized 6′-O-methylated t-carrageenan from the Australian red alga Claviclonium ovatum (Acrotylaceae, Gigartinales)

被引：23

作者：

Chiovitti, A

Bacic, A

Craik, DJ

Kraft, GT

Liao, ML ^{[1
]}

机构：

[1] Univ Melbourne, Sch Bot, Plant Cell Biol Res Ctr, CRC Bioprod, Melbourne, Vic 3010, Australia

[2] Univ Melbourne, Sch Bot, Melbourne, Vic 3010, Australia

[3] Univ Queensland, Inst Mol Biosci, Brisbane, Qld 4072, Australia

来源：

CARBOHYDRATE RESEARCH | 2004年 / 339卷 / 08期

基金：

澳大利亚研究理事会;

关键词：

Acrotylaceae; Australia; carbohydrate analysis; gigartinales; t-carrageenan; O-methyl ether; polysaccharide structure; Rhodophyta;

D O I：

10.1016/j.carres.2004.03.019

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 polysaccharides extracted from Claviclonium ovatum were studied by a combination of compositional assays, reductive partial hydrolysis, linkage analysis, Fourier Transform infrared (FTIR) spectroscopy, and C-13, H-1, and C-13/H-1 heteronuclear multiple quantum correlation (HMQC) two-dimensional nuclear magnetic resonance (NMR) spectroscopy. The chemical and spectroscopic data showed that the alkali-modified C. ovatum polysaccharides are composed of a nearly idealized repeating unit of 6'-O-methylcarrabiose 2,4'-disulfate (the repeating unit of 6-O-methylated iota-earrageenan), although some minor components were also present. The C. ovatum galactans are the most highly methylated carrageenans reported. (C) 2004 Elsevier Ltd. All rights reserved.

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页码：1459 / 1466

页数：8

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