一个常见的途径,用于Aβ42的洗剂辅助寡合化
Fidha Nazreen Kunnath Muhammedkutty1, Ramesh Prasad1, Yuan Gao2
1Department of Chemistry, University of Illinois Chicago, Chicago, IL, 60607, USA.
Communications biology
|November 21, 2023
概括
二硫酸盐 (SDS) 和DPC菌根稳定了粉样β (Aβ) 寡合体,揭示了一个共同的途径. 在Aβ42中的特定甘氨酸残留物为洗剂尾部创建稳定孔,影响细胞界面的聚合.
科学领域:
- 生物化学 生化学
- 结构生物学 结构生物学
- 神经科学是一个神经科学.
背景情况:
- 粉样β (Aβ) 聚合在神经退行性疾病中至关重要.
- 没有帮助,Aβ聚合通常是缓慢的.
- 像SDS和DPC这样的洗剂可以稳定Aβ寡合体.
研究的目的:
- 研究Aβ42.2的洗剂辅助寡合化途径.
- 确定Aβ寡合物的洗剂稳定性的结构基础.
- 探索内源性Aβ聚合的含义.
主要方法:
- 固态NMR光谱学 固态NMR光谱学
- 分子动力学模拟的模拟.
主要成果:
- SDS和DPC诱导具有相同结构的寡合体,这表明一个共同的途径.
- 一个稳定的C端反平行β片被纳入最终的寡合体.
- 三种甘氨酸残留物 (33,37,38) 形成由洗剂尾巴填充的孔,稳定结构.
结论:
- 洗剂辅助的寡合化遵循Aβ42.2的常见途径.
- 特定的Aβ42结构特征,包括甘氨酸残留物,是洗剂稳定性的关键.
- 这些发现提供了对生物界面上的Aβ聚合的见解.
更多相关视频
06:34A Tailored HPLC Purification Protocol That Yields High-purity Amyloid Beta 42 and Amyloid Beta 40 Peptides, Capable of Oligomer Formation
Published on: March 27, 2017
12.0K
08:53Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids
Published on: March 21, 2025
733
相关概念视频
Amyloid Fibrils
9.6K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
9.6K
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
1.9K
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
1.9K
