期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 125, 期 36, 页码 10335-10343出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcb.1c04467
关键词
-
资金
- German Research Foundation (DFG) [SFB1214]
- state of BadenWurttemberg through bwHPC
- DFG [INST 37/935-1 FUGG]
Understanding the unique interactions of Asp and Glu peptides with calcium and chloride ions in solution can provide insights into the mineralization processes. The simulations revealed that Asp peptides attract more ions, forming clusters on their surface, while Glu peptides have comparatively fewer ions bound to multiple carboxylate groups. This new understanding of additive-ion interactions sheds light on the precise control over mineralization processes.
Understanding the role of polymers rich in aspartic acid (Asp) and glutamic acid (Glu) is the key to gaining precise control over mineralization processes. Despite their chemical similarity, experiments revealed a surprisingly different influence of Asp and Glu sequences. We conducted molecular dynamics simulations of Asp and Glu peptides in the presence of calcium and chloride ions to elucidate the underlying phenomena. In line with experimental differences, in our simulations, we indeed find strong differences in the way the peptides interact with ions in solution. The investigated Asp pentapeptide tends to pull a lot of ions into its vicinity, and many structures with clusters of calcium and chloride ions on the surface of the peptide can be observed. Under the same conditions, comparatively fewer ions can be found in proximity of the investigated Glu pentapeptide, and the structures are characterized by single calcium ions bound to multiple carboxylate groups. Based on our simulation data, we identified three reasons contributing to these differences, leading to a new level of understanding additive-ion interactions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据