期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 16, 期 23, 页码 11698-11707出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cp00354c
关键词
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资金
- Israel Science Foundation
This paper presents a study of protein adsorption and denaturation using coarse-grained Monte Carlo simulations with simulated annealing. Intermolecular interactions are modeled using the Miyazawa-Jernigan (MJ) knowledge-based potential for an implicit solvent. Three different hydrophobicity scales are tested for adsorption of fibronectin on a hydrophobic surface. The hydrophobic scale BULDG was chosen for further analysis due to its greater stability during heating and its partial regenerative ability upon slow cooling. Differences between helical and sheet structures are observed upon denaturation alpha-helices undergo spreading of their native helical order to an elliptical perturbed shape, while beta-sheets transform into random coils and other more structured conformations. Electronic calculations carried out on rebuilt all-atom coordinates of adsorbed lysozymes revealed consistent destabilization of helices, while beta sheets show a greater variety of trends.
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