The role of protein dynamics and thermal fluctuations in regulating cytochrome c/cytochrome c oxidase electron transfer

In this overview we present recent combined electrochemical, spectroelectrochemical, spectroscopic and computational studies from our group on the electron transfer reactions of cytochrome c and of the primary electron acceptor of cytochrome c oxidase, the CuA site, in biomimetic complexes. Based on...

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Detalles Bibliográficos
Autores principales: Alvarez-Paggi, D., Zitare, U., Murgida, D.H.
Formato: JOUR
Materias:
Bioelectrochemistry
CuA
Cytochrome c
Electron transfer
Raman spectroelectrochemistry
azurin
copper ion
cytochrome c
cytochrome c oxidase
cytochrome c peroxidase
hemoprotein
histidine
methionine
plastocyanin
porphyrin
self assembled monolayer
ubiquinol cytochrome c reductase
algorithm
biomimetics
complex formation
conceptual framework
conference paper
conformational transition
crystal structure
dipole
electrochemistry
electrode
electron spin resonance
electron transport
energy transfer
Escherichia coli
ionic strength
lipid bilayer
molecular dynamics
nonhuman
nuclear magnetic resonance spectroscopy
oxidation reduction potential
oxidation reduction reaction
oxidation reduction state
pH
photosystem I
priority journal
protein protein interaction
protein secondary structure
proton transport
Raman spectrometry
static electricity
Thermus thermophilus
Amino Acid Sequence
Animals
Cytochromes c
Electron Transport
Electron Transport Complex IV
Humans
Molecular Docking Simulation
Molecular Dynamics Simulation
Molecular Sequence Data
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00052728_v1837_n7_p1196_AlvarezPaggi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:In this overview we present recent combined electrochemical, spectroelectrochemical, spectroscopic and computational studies from our group on the electron transfer reactions of cytochrome c and of the primary electron acceptor of cytochrome c oxidase, the CuA site, in biomimetic complexes. Based on these results, we discuss how protein dynamics and thermal fluctuations may impact on protein ET reactions, comment on the possible physiological relevance of these results, and finally propose a regulatory mechanism that may operate in the Cyt/CcO electron transfer reaction in vivo. This article is part of a Special Issue entitled: 18th European Bioenergetic Conference. © 2014 Elsevier B.V.

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