在甲基5-thio-α-d-galactopyranoside-Jacalin相互作用中的 entropy-enthalpy补偿
Daniil Ahiadorme1, David Crich2
1Department of Chemistry, University of Georgia, 302 East Campus Road, Athens, GA, 30602, United States; Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA, 30602, United States.
Carbohydrate research
|November 22, 2024
概括
合成甲基5-thio-α-d-galactopyranoside 由于硫-π 相互作用,改善了与雅卡林的结合度. 然而,增加的灵活性导致了不太有利的结合,使糖模仿设计复杂化.
科学领域:
- 碳水化合物的化学成分
- 生物物理化学 生物物理化学
- 分子识别分子识别
背景情况:
- 甲基α-d-galactopyranoside是已知的雅卡林的配体.
- 了解分子相互作用对于设计有效的碳水化合物模仿剂至关重要.
- 硫-π 相互作用越来越多地被认为是它们在分子结合中的作用.
研究的目的:
- 为了合成甲基5-thio-α-d-galactopyranoside.
- 为了研究糖与雅卡林的结合热力学.
- 为了比较糖与其氧类同类的结合相互作用.
主要方法:
- 甲基5-thio-α-d-galactopyranoside的化学合成.
- 异热定位热量计 (ITC) 用于结合性研究.
- 硫-π和氧-π相互作用的计算分析.
主要成果:
- 与甲基α-d-galactopyranoside相比,甲基5-thio-α-d-galactopyranoside对雅卡林具有更有利的结合度.
- 增强的度归因于较强的硫-π相互作用.
- 由于结构约束,结合对硫糖不那么有利.
结论:
- 硫的引入到pyranoside环增强通过有利的硫-π相互作用的结合度.
- 和之间的热力学补偿影响了整体的结合亲和力.
- 设计有效的糖模仿剂需要仔细考虑形状灵活性和非共价相互作用.
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