复杂性诱导的异环尿素的展开. 简单的折叠体与多个结合的板状结构保持平衡
P S Corbin1, S C Zimmerman, P A Thiessen
1Department of Chemistry, 600 South Mathews Avenue, University of Illinois, Urbana, Illinois 61801, USA.
Journal of the American Chemical Society
|October 25, 2001
概括
研究人员合成了异环尿素,并研究了它们的自我组装. 这些分子形成键复合体,模仿过渡,并作为自组装的基石.
科学领域:
- 有机化学 有机化学
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
背景情况:
- 异环尿素是多功能分子,在自组装中具有潜在的应用.
- 了解它们的结构性行为和结能力对于设计先进材料至关重要.
研究的目的:
- 合成新型异环尿素和结合模块.
- 研究这些化合物的度依赖的形状变化和自我组装.
- 探索它们作为超分子结构的构建块的潜力.
主要方法:
- 合成异环尿素和相关化合物,使用诸如诺尔凝结和与异酸盐处理等反应.
- 进行X射线晶体分析以确定固态结构.
- 1H核磁共振 (NMR) 光谱在溶液 () 中,以研究构造性行为和键.
主要成果:
- 合成和鉴定异环性尿素 (1-7) 和键模块 (2,5).
- 射线晶体学证实了1,3,16和17的尿素在固态中的分子内结合.
- 溶液研究 (1H NMR) 显示了甲和度依赖的展开中的折叠结构.
- 形成多重键复合物,包括混合6和7尿素的六倍键复合物.
- 在相辅相成的键模块的存在下,证明了展开.
结论:
- 合成的 heterocyclic 尿素体表现出度依赖的展开和自我组装成多个键复合体.
- 这些分子作为有价值的构建块,用于创建超分子架构.
- 观察到的展开行为为螺旋到叶片过渡提供了一个基本模型.
相关概念视频
Protein Organization
Overview
Protein Folding
Overview
Protein Folding
Overview
Molecular Chaperones and Protein Folding
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
The...
Protein Organization
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.
Protein Folding
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...


