Conformational changes of globular proteins upon adsorption on a hydrophobic surface

Literature Information

Publication Date 2014-04-16
DOI 10.1039/C4CP00354C
Impact Factor 3.676
Authors

Yevgeny Moskovitz, Simcha Srebnik


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Abstract

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 – α-helices undergo spreading of their native helical order to an elliptical perturbed shape, while β-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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Back matter

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DOI: 10.1039/B606935P

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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