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Title: | Hydrophobic Homopolymer’s Coil–Globule Transition and Adsorption onto a Hydrophobic Surface under Different Conditions |
Author: | Durà Faulí, Bernat Bianco, Valentino Franzese, Giancarlo |
Keywords: | Adsorció Pèptids Proteïnes Adsorption Peptides Proteins |
Issue Date: | 19-Jun-2023 |
Publisher: | American Chemical Society |
Abstract: | Unstructured proteins can modulate cellular responses to environ- mental conditions by undergoing coil−globule transitions and phase separation. However, the molecular mechanisms of these phenomena still need to be fully understood. Here, we use Monte Carlo calculations of a coarse-grained model incorporating water’s effects on the system’s free energy. Following previous studies, we modeled an unstructured protein as a polymer chain. Because we are interested in investigating how it responds to thermodynamic changes near a hydrophobic surface under different conditions, we chose an entirely hydrophobic sequence to maximize the interaction with the interface. We show that a slit pore confinement without top-down symmetry enhances the unfolding and adsorption of the chain in both random coil and globular states. Moreover, we demonstrate that the hydration water modulates this behavior depending on the thermodynamic parameters. Our findings provide insights into how homopolymers and possibly unstructured proteins can sense and adjust to external stimuli such as nanointerfaces or stresses. |
Note: | Reproducció del document publicat a: https://doi.org/10.1021/acs.jpcb.3c00937 |
It is part of: | Journal of Physical Chemistry B, 2023, vol. 127, p. 5541-5552 |
URI: | http://hdl.handle.net/2445/208491 |
Related resource: | https://doi.org/10.1021/acs.jpcb.3c00937 |
ISSN: | 1520-6106 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
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