The Response of Water to Surface Structure is Key to Understanding Protein Self-Assembly on Mica
January 12, 2023
Water's distinct response to substantially similar micas. Images show simulated water density at two different heights above the mica surface.
Discovered that dramatic changes in protein organization seen on different types of mica surfaces arise from disparities in interfacial water structure associated with subtle differences in mica lattice structure.
Significance and Impact
The results show that the response of water to the mica surface changes dramatically with the sub-Å shifts in atomic positions, providing a rationale for observed differences in protein assembly on distinct types of mica. This finding upends previous understanding and has profound implications for design of protein-materials interfaces.
We performed detailed molecular simulations of the intrinsic response of aqueous electrolytes to different forms of mica
We corroborated our findings by comparing the predictions to in situ atomic force microscopy maps of 3D water structure and images of protein assembly on mica