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Graphene oxide derivatives with variable alkyl chain length and terminal functional groups as supports for stabilization of cytochrome c.

Abstract：

:In this study we report the ability of reduced and non-reduced graphene oxide-based nanomaterials (GONs), modified with variable alkyl chain length and terminal functional groups, to act as effective scaffolds for the immobilization of cytochrome c (cyt c) using different immobilization procedures. The GONs/cyt c conjugates are characterized by a combination of techniques, namely atomic force microscopy, X-ray photoelectron and FT-IR spectroscopies as well as thermo-gravimetric and differential thermal analysis. The effect of the structure of functional groups and the surface chemistry of GONs on the immobilization efficiency, the peroxidase activity and the stability of the cyt c was investigated and correlated with conformational changes on the protein molecule upon immobilization. The enhanced thermal stability (up to 2-fold) and increased tolerance (up to 25-fold) against denaturing agents observed for immobilized cyt c, indicates that these functionalized GONs are suitable as nanoscaffolds for the development of robust nanobiocatalysts.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Patila M,Pavlidis IV,Kouloumpis A,Dimos K,Spyrou K,Katapodis P,Gournis D,Stamatis H

doi

10.1016/j.ijbiomac.2015.12.023

subject

Has Abstract

pub_date

2016-03-01 00:00:00

pages

227-35

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(15)30206-3

journal_volume

84

pub_type

杂志文章

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