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@ARTICLE{Polovinkin:185982,
author = {Polovinkin, V. and Balandin, T. and Volkov, O. and Round,
E. and Borshchevskiy, V. and Utrobin, P. and von Stetten, D.
and Royant, A. and Willbold, D. and Arzumanyan, G. and
Chupin, V. and Popot, J-L and Gordeliy, V.},
title = {{N}anoparticle surface-enhanced {R}aman scattering of
bacteriorhodopsin stabilized by amphipol {A}8-35},
journal = {The journal of membrane biology},
volume = {247},
number = {9-10},
issn = {1432-1424},
address = {New York, NY},
publisher = {Springer},
reportid = {FZJ-2015-00091},
pages = {971 - 980},
year = {2014},
abstract = {Surface-enhanced Raman spectroscopy (SERS) has developed
dramatically since its discovery in the 1970s, because of
its power as an analytical tool for selective sensing of
molecules adsorbed onto noble metal nanoparticles (NPs) and
nanostructures, including at the single-molecule (SM) level.
Despite the high importance of membrane proteins (MPs), SERS
application to MPs has not really been studied, due to the
great handling difficulties resulting from the amphiphilic
nature of MPs. The ability of amphipols (APols) to trap MPs
and keep them soluble, stable, and functional opens up onto
highly interesting applications for SERS studies, possibly
at the SM level. This seems to be feasible since single
APol-trapped MPs can fit into gaps between noble metal NPs,
or in other gap-containing SERS substrates, whereby the
enhancement of Raman scattering signal may be sufficient for
SM sensitivity. The goal of the present study is to give a
proof of concept of SERS with APol-stabilized MPs, using
bacteriorhodopsin (BR) as a model. BR trapped by APol A8-35
remains functional even after partial drying at a low
humidity. A dried mixture of silver Lee-Meisel colloid NPs
and BR/A8-35 complexes give rise to SERS with an average
enhancement factor in excess of 10(2). SERS spectra resemble
non-SERS spectra of a dried sample of BR/APol complexes.},
cin = {ICS-6},
ddc = {570},
cid = {I:(DE-Juel1)ICS-6-20110106},
pnm = {452 - Structural Biology (POF2-452)},
pid = {G:(DE-HGF)POF2-452},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:25192978},
UT = {WOS:000343835500017},
doi = {10.1007/s00232-014-9701-9},
url = {https://juser.fz-juelich.de/record/185982},
}