SDBS以剂量依赖的方式诱导多种酶构造.
Ajamaluddin Malik1, Abdullah Alhomida1, Javed Masood Khan2
1Department of Biochemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, Saudi Arabia.
International journal of biological macromolecules
|October 23, 2023
概括
二甲基二硫酸盐 (SDBS) 影响牛肝催化酶 (BLC) 纤维化. 在特定度下,SDBS会诱导BLC中的粉样结构,而较高度会恢复其原有的α-螺旋结构.
科学领域:
- 生物化学 生物化学
- 蛋白质错折叠疾病 蛋白质错折叠疾病
- 材料科学 材料科学 材料科学
背景情况:
- 粉样纤维素与不可治愈的疾病有关.
- 小分子诱导的粉样纤维化的机制尚未完全理解.
- 了解这些机制对于治疗开发至关重要.
研究的目的:
- 为了研究二二二硫酸盐 (SDBS) 对牛肝催化酶 (BLC) 纤维化的作用.
- 为了阐明由SDBS引起的BLC的构造变化.
- 描述粉样样结构的形成.
主要方法:
- 度测量 度测量
- 动态光散射 (RLS运动)
- 内在的光光谱学 内部的光光谱学
- 提奥夫拉T (ThT) 光测定
- 远紫外线圆形二极化 (CD) 光谱法
- 传输电子显微镜 (TEM) 的使用
主要成果:
- 在pH值为2.0时,BLC从α螺旋结构转变为随机的线圈结构.
- 低的SDBS度 (<0.1 mM) 在随机卷曲的BLC中促进了与原生相似的α-螺旋结构.
- 中间SDBS度 (0.11.0毫米) 诱导BLC聚合和粉样结构.
- 高的SDBS度 (>1.0mM) 在pH值2.0时恢复了与本地类似的α螺旋结构到BLC.
结论:
- SDBS以度依赖的方式调节BLC纤维化和结构.
- 粉样结构是在特定范围的SDBS度内形成的.
- 这项研究提供了有关疾病机制和治疗策略的表面活性剂诱导蛋白质纤维化的见解.
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