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Carotenoid response to retinal excitation and photoisomerization dynamics in xanthorhodopsin

Slouf, Vaclav; Balashov, Sergei P.; Lanyi, Janos K.; Pullerits, Tönu LU and Polivka, Tomas (2011) In Chemical Physics Letters 516(1-3). p.96-101
Abstract
We present a comparative study of xanthorhodopsin, a proton pump with the carotenoid salinixanthin serving as an antenna, and the closely related bacteriorhodopsin. Upon excitation of retinal, xanthorhodopsin exhibits a wavy transient absorption pattern in the region between 470 and 540 nm. We interpret this signal as due to electrochromic effect of the transient electric field of excited retinal on salinixanthin. The spectral shift decreases during the retinal dynamics through the ultrafast part of the photocycle. Differences in dynamics of bacteriorhodopsin and xanthorhodopsin are discussed. (C) 2011 Elsevier B.V. All rights reserved.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemical Physics Letters
volume
516
issue
1-3
pages
96 - 101
publisher
Elsevier
external identifiers
  • wos:000296582400018
  • scopus:80255125982
ISSN
0009-2614
DOI
10.1016/j.cplett.2011.09.062
language
English
LU publication?
yes
id
d604ea25-46a6-423a-b18d-e4579b0793ae (old id 2254526)
date added to LUP
2011-12-20 08:15:59
date last changed
2017-06-25 04:10:03
@article{d604ea25-46a6-423a-b18d-e4579b0793ae,
  abstract     = {We present a comparative study of xanthorhodopsin, a proton pump with the carotenoid salinixanthin serving as an antenna, and the closely related bacteriorhodopsin. Upon excitation of retinal, xanthorhodopsin exhibits a wavy transient absorption pattern in the region between 470 and 540 nm. We interpret this signal as due to electrochromic effect of the transient electric field of excited retinal on salinixanthin. The spectral shift decreases during the retinal dynamics through the ultrafast part of the photocycle. Differences in dynamics of bacteriorhodopsin and xanthorhodopsin are discussed. (C) 2011 Elsevier B.V. All rights reserved.},
  author       = {Slouf, Vaclav and Balashov, Sergei P. and Lanyi, Janos K. and Pullerits, Tönu and Polivka, Tomas},
  issn         = {0009-2614},
  language     = {eng},
  number       = {1-3},
  pages        = {96--101},
  publisher    = {Elsevier},
  series       = {Chemical Physics Letters},
  title        = {Carotenoid response to retinal excitation and photoisomerization dynamics in xanthorhodopsin},
  url          = {http://dx.doi.org/10.1016/j.cplett.2011.09.062},
  volume       = {516},
  year         = {2011},
}