α-(1→6)糖苷键作为渗透调节周质α-环十六糖中一种新型的构象熵调节剂。
The alpha-(1-->6) glycosidic linkage as a novel conformational entropic regulator in osmoregulated periplasmic alpha-cyclosophorohexadecaose.
作者信息
Choi Youngjin, Jung Seunho
机构信息
Department of Microbial Engineering, Bio/Molecular Informatics Center, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, South Korea.
出版信息
Carbohydr Res. 2005 Nov 21;340(16):2550-7. doi: 10.1016/j.carres.2005.08.020. Epub 2005 Oct 5.
Molecular dynamics simulations were performed to explain the conformational effect of an alpha-(1-->6)-glycosidic linkage upon the cyclic osmoregulated periplasmic glucan (OPG) produced by Xanthomonas campestris pv. citri. We suggest that a single alpha-(1-->6)-glycosidic linkage in cyclic OPG functions as a novel entropic regulator, which reduces the conformational entropy of cyclic OPG and increases the motional entropy of solvent water molecules.
进行了分子动力学模拟，以解释α-(1→6)-糖苷键对野油菜黄单胞菌柑橘致病变种产生的环状渗透调节周质葡聚糖（OPG）构象的影响。我们认为，环状OPG中的单个α-(1→6)-糖苷键作为一种新型的熵调节剂，它降低了环状OPG的构象熵，并增加了溶剂水分子的运动熵。
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