Carotenoid response to retinal excitation and photoisomerization dynamics in xanthorhodopsin

Vaclav Slouf; Sergei P. Balashov; Janos K. Lanyi; Tönu Pullerits; Tomas Polivka

doi:10.1016/j.cplett.2011.09.062

Carotenoid response to retinal excitation and photoisomerization dynamics in xanthorhodopsin

Vaclav Slouf, Sergei P. Balashov, Janos K. Lanyi, Tönu Pullerits, Tomas Polivka

Chemical Physics

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	96-101
Journal	Chemical Physics Letters
Volume	516
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2011.09.062
Publication status	Published - 2011

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Chemical Physics (S) (011001060)

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

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10.1016/j.cplett.2011.09.062

Cite this

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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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AU - Slouf, Vaclav

AU - Balashov, Sergei P.

AU - Lanyi, Janos K.

AU - Pullerits, Tönu

AU - Polivka, Tomas

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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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DO - 10.1016/j.cplett.2011.09.062

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Carotenoid response to retinal excitation and photoisomerization dynamics in xanthorhodopsin

Abstract

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