探测基于胆的离子液体和胰岛素阿斯巴特之间的分子相互作用:一项结合计算和实验研究
Vidya Sundaram1, Ramakrishnan Nagasundara Ramanan2, Manikandan Selvaraj3
1Chemical Engineering Department, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor, Malaysia.
基于的离子液 (ILs) 稳定了胰岛素阿斯巴特 (IA),而二酸 ([Dhp]-) 显示出比酸 ([Ace]-) 更强大的效果. IL度是保持IA对水分子稳定的关键.
科学领域:
- 生物化学 生化学
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
背景情况:
- 基于的离子液体 (ILs) 显示出对蛋白质稳定性的承诺.
- IL成分和蛋白质残留物之间的特定相互作用仍然不清楚.
研究的目的:
- 在基于胆的IL中研究胰岛素阿斯巴尔特 (IA) 的结构稳定性.
- 阐明胆 ([Ch]+) 和阴离子 ([Dhp]-或[Ace]-) 在蛋白质稳定中的作用.
主要方法:
- 结合计算 (分子对接) 和实验 (光谱学,动态光散射) 的方法.
- 研究了IA在1M[Ch][Dhp]和1M[Ch][Ace]溶液中的稳定性.
主要成果:
- 在两种IL中,IA在结构上保持稳定,其中[Dhp]-提供了比[Ace]-.
- [Dhp]-和[Ace]-增强了IA水分,但保留了疏水性核心.
- IL度对于抵消水的变质效应至关重要.
- 发现阳离子对IA结构具有主导影响,其次是[Ch]+离子.
结论:
- 基于胆的ILs,特别是那些含有[Dhp]-的ILs,可以有效地稳定胰岛素.
- 了解IL-蛋白相互作用,特别是阴离子和IL度的作用,对于蛋白质稳定应用至关重要.
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