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Metals 2016, 6(9), 200; doi:10.3390/met6090200

Molecular Docking and Aberration-Corrected STEM of Palladium Nanoparticles on Viral Templates

1
Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología UNAM, Cuernavaca Morelos 62210, Mexico
2
CINVESTAV Zacatenco, México City 07360, Mexico
3
Department of Physics and Astronomy, Research Centers in Minority Institutions (RCMI), The University of Texas at San Antonio (UTSA), San Antonio, TX 78249, USA
4
Departamento de Microscopia de Alta Resolución, Universidad Autónoma de San Luis Potosí (UASLP), San Luis Potosí 78210, Mexico
*
Author to whom correspondence should be addressed.
Academic Editor: Giuseppe Grasso
Received: 20 June 2016 / Revised: 8 August 2016 / Accepted: 10 August 2016 / Published: 25 August 2016
(This article belongs to the Special Issue Metallomics)
View Full-Text   |   Download PDF [3590 KB, uploaded 25 August 2016]   |  

Abstract

Viral templates are highly versatile biotemplates used for the synthesis of nanostructured materials. Rotavirus VP6 self-assembles into nanotubular hollow structures with well-defined diameters and variable lengths, serving as a nucleic acid-free biotemplate to synthesize metal nanoparticles of controlled size, shape, and orientation. Molecular docking simulations show that exposed residues (H173-S240-D242 and N200-N310) of VP6 have the ability to specifically bind Pd(II) ions, which serve as nucleation sites for the growth and stabilization of palladium nanoclusters. Using VP6 nanotubes as biotemplates allows for obtaining small Pd particles of 1–5 nm in diameter. Advanced electron microscopy imaging and characterization through ultra-high-resolution field-emission scanning electron microscopy (UHR-FE-SEM) and spherical aberration-corrected scanning transmission electron microscopy (Cs-STEM) at a low voltage dose (80 kV) reveals, with high spatial resolution, the structure of Pd nanoparticles attached to the macromolecular biotemplates. View Full-Text
Keywords: proteins; virus; palladium nanoparticles; advanced electron microscopy; molecular docking proteins; virus; palladium nanoparticles; advanced electron microscopy; molecular docking
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Carreño-Fuentes, L.; Bahena, D.; Palomares, L.A.; Ramírez, O.T.; José-Yacamán, M.; Plascencia-Villa, G. Molecular Docking and Aberration-Corrected STEM of Palladium Nanoparticles on Viral Templates. Metals 2016, 6, 200.

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