Measurement of Single-Molecule Forces in Cholesterol and Cyclodextrin Host-Guest Complexes.

ABSTRACT: Biological host molecules such as β-cyclodextrins (β-CDs) have been used to remove cholesterol guests from membranes and artery plaques. In this work, we calibrated the host-guest intermolecular mechanical forces (IMMFs) between cholesterol and cyclodextrin complexes by combining single-molecule force spectroscopy in optical tweezers and computational molecular simulations for the first time. Compared to native β-CD, methylated beta cyclodextrins complexed with cholesterols demonstrated higher mechanical stabilities due to the loss of more high-energy water molecules inside the methylated β-CD cavities. This result is consistent with the finding that methylated β-CD is more potent at solubilizing cholesterols than β-CD, suggesting that the IMMF can serve as a novel indicator to evaluate th

SUBMITTER: Pandey S 

PROVIDER: S-EPMC8788999 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature