Electrochemical properties of the interaction between cytochrome c and a hematite nanowire array electrode.
Adsorption
Cyclic voltammetry
Cytochrome
Electron transfer
Hematite
Journal
Bioelectrochemistry (Amsterdam, Netherlands)
ISSN: 1878-562X
Titre abrégé: Bioelectrochemistry
Pays: Netherlands
ID NLM: 100953583
Informations de publication
Date de publication:
Oct 2019
Oct 2019
Historique:
received:
31
01
2019
revised:
22
05
2019
accepted:
22
05
2019
pubmed:
9
6
2019
medline:
7
8
2019
entrez:
9
6
2019
Statut:
ppublish
Résumé
We investigate the interaction of horse heart cytochrome c (cyt c) with hematite nanowire array electrodes by cyclic voltammetry to study the electron transfer between redox active proteins and mineral surfaces. Using this model system, we quantify electron transfer rates between cyt c and hematite under varying electric potential and pH conditions. The results are consistent with two cyt c conformations adsorbed at the hematite surface: the native and a partially unfolded form. The partially unfolded protein maintained redox activity, but at a lower redox potential than the native protein. Adsorption of cyt c allowed direct electron transfer between cyt c and hematite, with an interfacial electron transfer rate, k°
Identifiants
pubmed: 31176253
pii: S1567-5394(19)30077-5
doi: 10.1016/j.bioelechem.2019.05.012
pii:
doi:
Substances chimiques
Ferric Compounds
0
ferric oxide
1K09F3G675
Cytochromes c
9007-43-6
Types de publication
Journal Article
Langues
eng
Pagination
162-169Informations de copyright
Copyright © 2019. Published by Elsevier B.V.