通过H+诱导的螺旋形形成来调节糖与基本的多乙烯二烯结合的调节
Hajime Abe1, Nozomi Masuda, Minoru Waki
1Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, Toyama 930-0194, Japan. abeh@ms.toyama-mpu.ac.jp
Journal of the American Chemical Society
|November 17, 2005
概括
这项研究表明,一种特定的聚合物可以以pH依赖的方式与糖结合. 用酸调整pH值可以通过稳定聚合物来增强这种糖的识别和结合.
科学领域:
- 聚合物化学 聚合物化学
- 超分子化学 超分子化学
- 碳水化合物识别 碳水化合物识别
背景情况:
- 基本聚合物可以设计用于特定的分子识别任务.
- 带有糖的螺旋性聚合物复合物可以表现出独特的光学特性,如诱导循环二重化 (ICD).
研究的目的:
- 为了研究可调节pH的聚乙烯 (m-乙烯胺) 主体聚合物的糖化物识别.
- 了解pH如何影响聚合物-糖化合物的结合亲和力和光学反应.
主要方法:
- 聚乙烯 (m-乙烯胺) 与基氨基基团的合成.
- 螺旋复合物的形成与糖类.
- 用三酸标配以研究pH值的影响.
- 诱导循环二重化 (ICD) 的测量.
- 聚合物形状的计算分析.
主要成果:
- 该聚合物与糖类形成螺旋复合物,显示诱导圆形二元化 (ICD).
- ICD强度通过部分质子增强 (约. 聚合物的化环,进一步的质子化导致抑制.
- 最佳的酸添加增加了聚合物和糖类之间的结合常数.
结论:
- ICD和结合亲和力的pH依赖调制归因于螺旋结构的稳定.
- 化环的半质子化有利于化形状,增强复杂的稳定性和糖结合.
- 计算研究支持在-二元体中偏好化形状.
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