In this work, the adsorption of cytochrome C (CytC) on wet 100, 111, 110, and 120 silver surfaces has been investigated by computational simulations. The effect of polyvinylpyrrolidone (PVP) coating has also been studied. The main results obtained can be summarized as follow: (a) CytC strongly interacts with wet bare high index facets, while the adsorption over the 100 surface is disfavored due to the strong water structuring at the surface; (b) a nonselective protein adsorption mechanism is highlighted; (c) the native structure of CytC is well preserved during adsorption; (d) the heme group of CytC is never found to interact directly with the surface; (e) the interactions with the PVP-capped 100 surface is weak and specific. These results can be exploited to better control biological responses at engineered nanosurface, allowing the development of improved diagnostic tools.

Computational Insight into the Interaction of Cytochrome C with Wet and PVP-Coated Ag Surfaces / Tavanti, Francesco; Pedone, Alfonso; Matteini, Paolo; Menziani, Maria Cristina. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - 121:41(2017), pp. 9532-9540. [10.1021/acs.jpcb.7b07492]

Computational Insight into the Interaction of Cytochrome C with Wet and PVP-Coated Ag Surfaces

Tavanti, Francesco;Pedone, Alfonso;Menziani, Maria Cristina
2017

Abstract

In this work, the adsorption of cytochrome C (CytC) on wet 100, 111, 110, and 120 silver surfaces has been investigated by computational simulations. The effect of polyvinylpyrrolidone (PVP) coating has also been studied. The main results obtained can be summarized as follow: (a) CytC strongly interacts with wet bare high index facets, while the adsorption over the 100 surface is disfavored due to the strong water structuring at the surface; (b) a nonselective protein adsorption mechanism is highlighted; (c) the native structure of CytC is well preserved during adsorption; (d) the heme group of CytC is never found to interact directly with the surface; (e) the interactions with the PVP-capped 100 surface is weak and specific. These results can be exploited to better control biological responses at engineered nanosurface, allowing the development of improved diagnostic tools.
2017
6-ott-2017
121
41
9532
9540
Computational Insight into the Interaction of Cytochrome C with Wet and PVP-Coated Ag Surfaces / Tavanti, Francesco; Pedone, Alfonso; Matteini, Paolo; Menziani, Maria Cristina. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - 121:41(2017), pp. 9532-9540. [10.1021/acs.jpcb.7b07492]
Tavanti, Francesco; Pedone, Alfonso; Matteini, Paolo; Menziani, Maria Cristina
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1152437
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