相关实验视频
Updated: Jul 20, 2026

13:33
Infinium Assay for Large-scale SNP Genotyping Applications
Published on: November 19, 2013
在接口处组装三链贝塔叶的三链贝塔叶
Hanna Rapaport1, Gunter Möller, Charles M Knobler
1Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena 91125, USA.
Journal of the American Chemical Society
|August 9, 2002
概括
酸BS30与林残留物成功地在空气-水界面形成了三链β片单层. 用甘氨酸取代普罗林导致结构失调,突出了普罗林在自我组装中的关键作用.
科学领域:
- 生物物理学的生物物理.
- 材料科学 材料科学 材料科学
- 体自组装器 自组装器
背景情况:
- 设计可以自组装成特定结构的对于开发新型生物材料至关重要.
- 贝塔叶结构在和蛋白质中很常见,可以形成稳定的单层.
- 氨酸残留物可以诱导链中的轮,影响它们的二次结构和组装.
研究的目的:
- 调查林残留在30残留 (BS30) 自组装成三链β片单层中的作用.
- 在空气-水界面上,比较BS30的结构性质与无类型 (BS30G) 的结构性质.
主要方法:
- 使用表面压力-分子面积等温法来确定的分子面积.
- 使用牧场发射率X射线衍射 (GIXD) 来分析单层结构组织.
- 布鲁斯特角显微镜 (BAM) 用于在现场可视化单层形态.
主要成果:
- BS30形成了一个稳定的单一层,其限制分子面积约为460A(2),与三链β片形成一致.
- BS30G表现出较小的分子面积 (380 A(2)) 并看起来混乱.
- 对于BS30的GIXD数据证实了具有特征间距的三链β-sheet结构的存在.
- BAM显示了BS30的统一,固体类域,与BS30G的混乱外观形成鲜明对比.
结论:
- 烯残留物对于空气-水界面的BS30形成有序的三链β片单层至关重要.
- 的特异性设计,包括的结合,可以控制它们的自我组装成功能性的二维结构.
- 这项研究为需要有序单层的应用提供了对基于的材料设计的见解.
相关概念视频
Coat Assembly and GTPases
Vesicles incorporate different coat protein subunits in different cell locations, which changes the properties of the coat, such as the shape and geometry of the transport vesicles. Thus, vesicle coat proteins also play a significant role in cargo selection.
Coat assembly depends on the local availability of phosphatidylinositol phosphates or PIPs and GTP-binding proteins. Adaptor proteins, which link the coat proteins to the membrane, bind to these PIPs and play a crucial role in controlling...
Coat assembly depends on the local availability of phosphatidylinositol phosphates or PIPs and GTP-binding proteins. Adaptor proteins, which link the coat proteins to the membrane, bind to these PIPs and play a crucial role in controlling...
[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement
The Cope rearrangement is classified as a [3,3] sigmatropic shift in 1,5-dienes, leading to a more stable, isomeric 1,5-diene. The reaction involves a concerted movement of six electrons, four from two π bonds and two from a σ bond, via an energetically favorable chair-like transition state.
Assembly of Signaling Complexes
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
IP3/DAG Signaling Pathway
Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and produces two-second...
Three-Phase Voltages
A three-phase generator produces three voltages that are equal in magnitude but have a phase difference of 120 degrees. This identical magnitude and equal phase separated voltages are known as the balanced voltages and help to minimize power loss while ensuring a steady delivery of energy to connected loads. As voltage sources in a three-phase system can be configured in a wye or a delta formation, the loads connected to these systems can also be arranged in either configuration. This...
Three-Winding Transformers
Three identical single-phase transformers can be configured to form a three-phase transformer connection, which involves high-voltage and low-voltage windings. The high-voltage windings are denoted by capital letters A-B-C, while the low-voltage windings are labeled with lowercase letters a-b-c, representing their respective phases. This notation helps distinguish between the high and low voltage sides of the transformer.
In the per-unit equivalent circuit of a grounded Y-Y three-phase...
In the per-unit equivalent circuit of a grounded Y-Y three-phase...

