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Femtosecond Infrared Spectroscopy of Bacteriorhodopsin Chromophore Isomerization
Abstract
The vibrational dynamics of the retinal chromophore all-trans–to–13-cis photoisomerization in bacteriorhodopsin has been studied with mid-infrared absorption spectroscopy at high time resolution (about 200 femtoseconds). After photoexcitation of light-adapted bacteriorhodopsin, the transient infrared absorption was probed in a broad spectral region, including vibrations with dominant C–C, C=C, and C=NH stretching mode amplitude. All photoproduct modes, especially those around 1190 reciprocal-centimeters that are indicative for a 13-cis configuration of the chromophore, rise with a time constant of ∼0.5 picosecond. The results presented give direct vibrational-spectroscopic evidence for the isomerization taking place within 0.5 picosecond, as has been suggested by previous optical femtosecond time-resolved experiments but questioned recently by picosecond time-resolved vibrational spectroscopy experiments.
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Cited by
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Ernst, O. P., Lodowski, D. T., Elstner, M., Hegemann, P., Brown, L. S., & Kandori, H. (2014) · Chemical Reviews · doi:10.1021/cr4003769 · Cited by 1,153
Femtosecond Stimulated Raman Spectroscopy
Kukura, P., McCamant, D. W., & Mathies, R. A. (2007) · Annual Review of Physical Chemistry · doi:10.1146/annurev.physchem.58.032806.104456 · Cited by 632
Machine Learning for Electronically Excited States of Molecules
Westermayr, J., & Marquetand, P. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00749 · Cited by 398
van der Horst, M. A., & Hellingwerf, K. J. (2004) · Accounts of Chemical Research · doi:10.1021/ar020219d · Cited by 379
Coherent Control of Retinal Isomerization in Bacteriorhodopsin
Prokhorenko, V. I., Nagy, A. M., Waschuk, S. A., Brown, L. S., Birge, R. R., & Miller, R. J. D. (2006) · Science · doi:10.1126/science.1130747 · Cited by 371
Metadata
- Authors
- Herbst, J., Heyne, K., & Diller, R.
- Venue
- Science
- Published
- 2002-08-02
- Volume
- 297
- Issue
- 5582
- Pages
- 822-825
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2060282518
- Cited by
- 238
- References
- 0
- FWCI
- 3.64
- Type
- journal article
- Language
- en
- Open access
- closed
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