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dc.contributor.author
Georg, Sören
dc.contributor.author
Kabuss, Julia
dc.contributor.author
Weidinger, Inez M.
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Murgida, Daniel Horacio
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Hildebrandt, Peter
dc.contributor.author
Knorr, Andreas
dc.contributor.author
Richter, Marten
dc.date.available
2019-03-19T16:16:41Z
dc.date.issued
2010-04
dc.identifier.citation
Georg, Sören; Kabuss, Julia; Weidinger, Inez M.; Murgida, Daniel Horacio; Hildebrandt, Peter; et al.; Distance-dependent electron transfer rate of immobilized redox proteins: A statistical physics approach; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 81; 4; 4-2010; 46101-46110
dc.identifier.issn
1539-3755
dc.identifier.uri
http://hdl.handle.net/11336/72007
dc.description.abstract
The electron transfer kinetics of redox proteins adsorbed on metal electrodes coated with self-assembled monolayers (SAMs) of mercaptanes shows an unusual distance-dependence. For thick SAMs, the experimentally measured electron transfer rate constant kexp obeys the behavior predicted by Marcus theory, whereas for thin SAMs, kexp remains virtually constant. In this work, we present a simple theoretical model system for the redox protein cytochrome c electrostatically bound to a SAM-coated electrode. A statistical average of the electron tunneling rate is calculated by accounting for all possible orientations of the model protein. This approach, which takes into account the electric field dependent orientational distribution, allows for a satisfactory description of the "saturation" regime in the high electric field limit. It further predicts a nonexponential behavior of the average electron transfer processes that may be experimentally checked by extending kinetic experiments to shorter sampling times, i.e., 1/ kexp. For a comprehensive description of the overall kinetics in the saturation regime at sampling times of the order of 1/ kexp, it is essential to consider the dynamics of protein reorientation, which is not implemented in the present model. © 2010 The American Physical Society.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Protein Et
dc.subject
Statistical Physics
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Distance-dependent electron transfer rate of immobilized redox proteins: A statistical physics approach
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-08T20:19:39Z
dc.journal.volume
81
dc.journal.number
4
dc.journal.pagination
46101-46110
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Melville
dc.description.fil
Fil: Georg, Sören. Technishe Universitat Berlin; Alemania
dc.description.fil
Fil: Kabuss, Julia. Technishe Universitat Berlin; Alemania
dc.description.fil
Fil: Weidinger, Inez M.. Technishe Universitat Berlin; Alemania
dc.description.fil
Fil: Murgida, Daniel Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
dc.description.fil
Fil: Hildebrandt, Peter. Technishe Universitat Berlin; Alemania
dc.description.fil
Fil: Knorr, Andreas. Technishe Universitat Berlin; Alemania
dc.description.fil
Fil: Richter, Marten. Technishe Universitat Berlin; Alemania
dc.journal.title
Physical Review E: Statistical, Nonlinear and Soft Matter Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1103/PhysRevE.81.046101
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pre/abstract/10.1103/PhysRevE.81.046101
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