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@ARTICLE{Ataka:41691,
author = {Ataka, K. and Heberle, J.},
title = {{F}unctional vibrational spectroscopy of a cytochrome c
monolayer: {SEIDAS} probes the interaction with different
surface modified electrodes},
journal = {Journal of the American Chemical Society},
volume = {126},
issn = {0002-7863},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {PreJuSER-41691},
pages = {9445 - 9457},
year = {2004},
note = {Record converted from VDB: 12.11.2012},
abstract = {Electrochemically induced infrared difference spectra of
cytochrome c on various chemically modified electrodes
(CMEs) are recorded by exploiting the surface-enhancement
exerted by a granular gold film. We have recently developed
surface-enhanced infrared difference absorption spectroscopy
(SEIDAS), which provides acute sensitivity to observe the
minute enzymatic change of a protein on the level of a
monolayer. By these means, we demonstrate that the relative
band intensities in the potential-induced difference spectra
of adsorbed cytochrome c are significantly dependent on the
type of CME used (mercaptopropionic acid, mercaptoethanol,
4,4'-dithiodipyridine, or L-cysteine). These differences are
attributed to the altered interaction of cytochrome c with
the headgroup of the various CMEs leading to variations in
surface orientation and relative distance from the surface.
Nevertheless, the peak positions of the observed bands are
identical among the CMEs employed. This implies that the
internal conformational changes induced by the redox
reaction of the adsorbed cytochrome c are not disturbed by
the interaction with the CME and that full functionality of
the protein is retained. Finally, we critically discuss our
results within the framework of the different models for
cytochrome c adsorption on CMEs.},
keywords = {Crystallography, X-Ray / Cytochromes c: chemistry /
Electrochemistry: instrumentation / Electrochemistry:
methods / Electrodes / Gold: chemistry / Nuclear Magnetic
Resonance, Biomolecular / Oxidation-Reduction /
Spectroscopy, Fourier Transform Infrared: instrumentation /
Spectroscopy, Fourier Transform Infrared: methods / Gold
(NLM Chemicals) / Cytochromes c (NLM Chemicals) / J
(WoSType)},
cin = {IBI-2},
ddc = {540},
cid = {I:(DE-Juel1)VDB58},
pnm = {Neurowissenschaften},
pid = {G:(DE-Juel1)FUEK255},
shelfmark = {Chemistry, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:15281838},
UT = {WOS:000222950900057},
doi = {10.1021/ja048346n},
url = {https://juser.fz-juelich.de/record/41691},
}