| Literature DB >> 22102759 |
Václav Slouf1, Sergei P Balashov, Janos K Lanyi, Tõnu Pullerits, Tomáš Polívka.
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.Entities:
Year: 2011 PMID: 22102759 PMCID: PMC3219219 DOI: 10.1016/j.cplett.2011.09.062
Source DB: PubMed Journal: Chem Phys Lett ISSN: 0009-2614 Impact factor: 2.328