ArticlePhotosynthesis research2017
Ultrafast spectroscopy tracks carotenoid configurations in the orange and red carotenoid proteins from cyanobacteria.
Article in Photosynthesis research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed, 39 citations in OpenAlex.
- Determining molar absorption coefficients for chromoproteins using relative actinometry with transient absorption spectroscopy: application to Orange Carotenoid Protein.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2026Article
- Atomistic simulations reveal the photoactivation mechanism of a carotenoid-binding photoreceptor.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Photoactivation Transition State and Dynamical Response of the Orange Carotenoid Protein.The journal of physical chemistry. B · 2025Article
- Two-Photon-Driven Photoprotection Mechanism in Echinenone-Functionalized Orange Carotenoid Protein.Journal of the American Chemical Society · 2025Article
- The Orange Carotenoid Protein Triggers Cyanobacterial Photoprotection by Quenching Bilins via a Structural Switch of Its Carotenoid.Journal of the American Chemical Society · 2024Article
- Relationship between non-photochemical quenching efficiency and the energy transfer rate from phycobilisomes to photosystem II.Photosynthesis research · 2024Article
- How orange carotenoid protein controls the excited state dynamics of canthaxanthin.Chemical science · 2023Article
- Unifying Perspective of the Ultrafast Photodynamics of Orange Carotenoid Proteins fromJACS Au · 2022Article
- Role of hydrogen bond alternation and charge transfer states in photoactivation of the Orange Carotenoid Protein.Communications biology · 2021Article
- Spectral Features of Canthaxanthin in HCP2. A QM/MM Approach.Molecules (Basel, Switzerland) · 2021Article
- Comparative ultrafast spectroscopy and structural analysis of OCP1 and OCP2 from Tolypothrix.Biochimica et biophysica acta. Bioenergetics · 2020Article
- Photoactivation Mechanism, Timing of Protein Secondary Structure Dynamics and Carotenoid Translocation in the Orange Carotenoid Protein.Journal of the American Chemical Society · 2019Article
- Carotenoid to bacteriochlorophyll energy transfer in the RC-LH1-PufX complex from Rhodobacter sphaeroides containing the extended conjugation keto-carotenoid diketospirilloxanthin.Photosynthesis research · 2018Article
- The photocycle of orange carotenoid protein conceals distinct intermediates and asynchronous changes in the carotenoid and protein components.Scientific reports · 2017Article
- Photoactivation mechanism of a carotenoid-based photoreceptor.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A quenching mechanism mediated by the orange carotenoid protein (OCP) is one of the ways cyanobacteria protect themselves against photooxidative stress. Here, we present a femtosecond spectroscopic study comparing OCP and RCP (red carotenoid protein) samples binding different carotenoids. We confirmed significant changes in carotenoid configuration upon OCP activation reported by Leverenz et al. (Science 348:1463-1466. doi: 10.1126/science.aaa7234 , 2015) by comparing the transient spectra of OCP and RCP. The most important marker of these changes was the magnitude of the transient signal associated with the carotenoid intramolecular charge-transfer (ICT) state. While OCP with canthaxanthin exhibited a weak ICT signal, it increased significantly for canthaxanthin bound to RCP. On the contrary, a strong ICT signal was recorded in OCP binding echinenone excited at the red edge of the absorption spectrum. Because the carbonyl oxygen responsible for the appearance of the ICT signal is located at the end rings of both carotenoids, the magnitude of the ICT signal can be used to estimate the torsion angles of the end rings. Application of two different excitation wavelengths to study OCP demonstrated that the OCP sample contains two spectroscopically distinct populations, none of which is corresponding to the photoactivated product of OCP.
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