Unraveling the primary isomerization dynamics in cyanobacterial phytochrome Cph1 with multipulse manipulations
Journal of Physical Chemistry Letters, ISSN: 1948-7185, Vol: 4, Issue: 16, Page: 2605-2609
2013
- 39Citations
- 38Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations39
- Citation Indexes39
- 39
- CrossRef38
- Captures38
- Readers38
- 38
Article Description
The ultrafast mechanisms underlying the initial photoisomerization (P → Lumi-R) in the forward reaction of the cyanobacterial photoreceptor Cph1 were explored with multipulse pump-dump-probe transient spectroscopy. A recently postulated multipopulation model was used to fit the transient pump-dump-probe and dump-induced depletion signals. We observed dump-induced depletion of the Lumi-R photoproduct, demonstrating that photoisomerization occurs via evolution on both the excited- and ground-state electronic surfaces. Excited-state equilibrium was not observed, as shown via the absence of a dump-induced excited-state "Le Chaîtelier redistribution" of excited-state populations. The importance of incorporating the inhomogeneous dynamics of Cph1 in interpreting measured transient data is discussed. © 2013 American Chemical Society.
Bibliographic Details
American Chemical Society (ACS)
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