Ruiz Hernandez, Sergio ![]() ![]() |
Abstract
Classical molecular dynamics (MD) simulations were used to study the interaction of a dimer of chondroitin 4-sulfate (Ch4S) with the (100), (010), and (121̅) surfaces of the mineral calcium oxalate monohydrate (COM). The Ch4S glycosaminoglycan has been implicated in the modulation of the biomineralization process of kidney stones. MD simulations of the mineral surfaces and the disaccharide in the presence of solvent water allowed us to compute the adsorption energies of the saccharides on the COM surfaces. The calculations show that Ch4S interacts with COM principally through the sulfate, the carboxylate, and the carbonyl of the acetyl amine functional groups. The mode and strength of the interaction depend on the orientation of the disaccharide with respect to the surface and the ability of the Ch4S to replace the interactions of the water molecules that compete with the saccharide for adsorption sites on the COM surface. Ch4S binds more strongly to the (010) surface than the (100) surface, leading to a more pronounced [001]/[010] aspect ratio in the calculated crystal morphology.
Item Type: | Article |
---|---|
Date Type: | Publication |
Status: | Published |
Schools: | Chemistry |
Subjects: | Q Science > QD Chemistry |
Publisher: | American Chemical Society |
ISSN: | 1528-7483 |
Last Modified: | 31 Oct 2022 10:59 |
URI: | https://orca.cardiff.ac.uk/id/eprint/86958 |
Citation Data
Cited 8 times in Scopus. View in Scopus. Powered By Scopus® Data
Actions (repository staff only)
![]() |
Edit Item |