半乳糖
阿拉伯半乳聚糖
化学
落叶松
部分
三螺旋
双糖
立体化学
侧链
结晶学
多糖
生物化学
植物
有机化学
生物
聚合物
作者
Rengaswami Chandrasekaran,Srinivas Janaswamy
标识
DOI:10.1016/s0008-6215(02)00223-9
摘要
A molecular modeling study has revealed that (1→3)-β-d-galactan can not only adopt a triple helical structure similar to that of the corresponding glucan but can also accommodate a highly flexible β-d-Gal-(1→6)-β-d-Gal disaccharide moiety as a side group 6-linked to every galactosyl unit in the main chain. The resulting triple helix, applicable to Western larch arabinogalactan, can assume quite different morphologies since the side group has access to several allowed conformational states. Some of the preferred modes of association between these helices have been visualized using preliminary X-ray fiber diffraction data.
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