ArticleProceedings of the National Academy of Sciences of the United States of America2001
Primary reactions of sensory rhodopsins.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed, 63 citations in OpenAlex.
- Diverging pH dependence and photocycle dynamics across members of the CryoRhodopsin clade.Biophysical journal · 2026Article
- Ultrafast Protein Dynamics Prior to Retinal Photoisomerization in Microbial Rhodopsins.The journal of physical chemistry letters · 2025Article
- Retinal photoisomerization versus counterion protonation in light and dark-adapted bacteriorhodopsin and its primary photoproduct.Nature communications · 2024Article
- Fluorescence of the Retinal Chromophore in Microbial and Animal Rhodopsins.International journal of molecular sciences · 2023Review
- Bidirectional Photochemistry of Antarctic Microbial Rhodopsin: Emerging Trend of Ballistic Photoisomerization from the 13-The journal of physical chemistry letters · 2022Article
- Review
- Molecular mechanism for thermal denaturation of thermophilic rhodopsin.Chemical science · 2019Article
- Absorption and Emission Spectroscopic Investigation of the Thermal Dynamics of the Archaerhodopsin 3 Based Fluorescent Voltage Sensor QuasAr1.International journal of molecular sciences · 2019Article
- Photoactivation mechanism of a carotenoid-based photoreceptor.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
- A photochromic histidine kinase rhodopsin (HKR1) that is bimodally switched by ultraviolet and blue light.The Journal of biological chemistry · 2012Article
- Tuning the primary reaction of channelrhodopsin-2 by imidazole, pH, and site-specific mutations.Biophysical journal · 2012Article
- Initial reaction dynamics of proteorhodopsin observed by femtosecond infrared and visible spectroscopy.Biophysical journal · 2008Article
- Different dark conformations function in color-sensitive photosignaling by the sensory rhodopsin I-HtrI complex.Biophysical journal · 2007Article
- Laser-induced transient grating analysis of dynamics of interaction between sensory rhodopsin II D75N and the HtrII transducer.Biophysical journal · 2007Article
- First steps of retinal photoisomerization in proteorhodopsin.Biophysical journal · 2006Article
- The hydroxylamine reaction of sensory rhodopsin II: light-induced conformational alterations with C13=C14 nonisomerizable pigment.Biophysical journal · 2005Article
- Living with two extremes: conclusions from the genome sequence of Natronomonas pharaonis.Genome research · 2005Article
- FTIR spectroscopy of the M photointermediate in pharaonis rhoborhodopsin.Biophysical journal · 2002Article
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The first steps in the photocycles of the archaeal photoreceptor proteins sensory rhodopsin (SR) I and II from Halobacterium salinarum and SRII from Natronobacterium pharaonis have been studied by ultrafast pump/probe spectroscopy and steady-state fluorescence spectroscopy. The data for both species of the blue-light receptor SRII suggests that their primary reactions are nearly analogous with a fast decay of the excited electronic state in 300-400 fs and a transition between two red-shifted product states in 4-5 ps. Thus SRII behaves similarly to bacteriorhodopsin. In contrast for SRI at pH 6.0, which absorbs in the orange part of the spectrum, a strongly increased fluorescence quantum yield and a drastically slower and biexponential decay of the excited electronic state occurring on the picosecond time scale (5 ps and 33 ps) is observed. The results suggest that the primary reactions are controlled by the charge distribution in the vicinity of the Schiff base and demonstrate that there is no direct connection between absorption properties and reaction dynamics for the retinal protein family.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.