Amphiphilk carbohydrates as a tool for molecular recognition in organized systems

Amphiphilk carbohydrates as a tool for molecular recognition in organized systems
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双亲碳水化合物作为有组织系统中分子识别的工具

DOI:
10.1007/bfb0119260
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发表时间:
1997
影响因子:
8.6
通讯作者:
P. Boullanger
P. Boullanger
中科院分区:
化学2区
文献类型:
--
作者:
P. Boullanger

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当糖脂或合成疏水碳水化合物分散在水中(可能有其他脂类存在)时,碳水化合物的有组织组合会自发形成。这种组织系统(单层或双层)的碳水化合物识别与各向同性介质中的识别有些不同。主要的区别来自于动力学和热力学的观点(分别是受阻法和表面的熵变)。此外,嵌入界面的碳水化合物的构象和运动受到其脂质锚的性质和周围脂质组分的性质的强烈影响。两亲性碳水化合物的自组织可以通过考虑分子的几何形状来合理化;根据极头的表面、极尾的长度和体积,可以形成胶束、液晶、单层或囊泡。特定受体对碳水化合物单层或Langmuir-Blodgett膜的识别可以显示定量信息,如结合或簇效应的热力学参数,而在囊泡表面的识别主要提供结合的定性知识。
Organized assemblies of carbohydrates are spontaneously formed when glycolipids or synthetically hydrophobized carbohydrates are dispersed in water (possibly in the presence of other lipids). Carbohydrate recognition of such organized systems (mono or bilayers) is somewhat different from recognition in isotropic media. The main differences arise from the kinetics and thermodynamics points of view (hindered approach and entropy changes at the surface, respectively). Furthermore, the conformation and the motion of the carbohydrate embedded at interfaces are strongly affected by the natures of its lipid anchor and that of the surrounding lipid components. The self-organization of amphiphilic carbohydrates can be rationalized by considering the geometry of the molecule; depending on the surface of the polar head, length and volume of the apolar tail, micelles, liquid crystals, monolayers, or vesicles can be formed. The recognition, by specific receptors, of carbohydrates assembled as monolayers or Langmuir-Blodgett films, can display quantitative information such as the thermodynamic parameters of binding or cluster effects, whereas the recognition at the surface of vesicles mainly affords a qualitative knowledge of the binding.
DOI: 10.1021/bi00486a004
发表时间: 1990
期刊: Biochemistry
影响因子: 2.9
作者:
Sen,A;Hui,SW;Mannock,DA;Lewis,RN;McElhaney,RN
通讯作者: McElhaney,RN
双层碳水化合物改变体内脂质体的分布。
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DOI: --
发表时间: 1991
期刊: The Journal of biological chemistry
影响因子: --
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发表时间: 1990
影响因子: 3.1
作者:
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