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Type: Artigo de periódico
Title: Catalytic Role Of Traditional Enzymes For Biosynthesis Of Biogenic Metallic Nanoparticles: A Mini-review.
Author: Durán, Marcela
Silveira, Camila P
Durán, Nelson
Abstract: Although the formation mechanism of biogenically metallic nanoparticles is broadly associated to enzyme mediation, major attention has been given to the role of proteins and peptides in oxido-reduction of metallic ions leading to these nanostructures. Among the wide range of biomolecules that can act not only as capping agents but also as non-enzymatic agents to form nanoparticles, disulphide bridge-containing peptides and amino acids particularly stand out. The literature proposes that they actively participate in the process of nanoparticles' synthesis, with thiols groups and disulphide bridge moieties as the reaction catalytic sites. Similarly, denaturated enzymes containing exposed S-S or S-H moieties are also able to reduce metallic ions to form nanoparticles. This mini-review is focused on the biogenic synthesis of metallic nanoparticles such as gold, silver, copper, platinum, palladium, lead and selenium, in which proteins, peptides, reductases and even oxido-reductases act as non-enzymatic catalysts of the reduction reaction, opening economically and ecologically favourable perspectives in the nanoparticles synthesis field.
Subject: Biocatalysis
Metal Nanoparticles
Metals, Heavy
Citation: Iet Nanobiotechnology / Iet. v. 9, n. 5, p. 314-323, 2015-Oct.
Rights: fechado
Identifier DOI: 10.1049/iet-nbt.2014.0054
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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