Role of hydrogen bond alternation and charge transfer states in photoactivation of the Orange Carotenoid Protein
oleh: Igor A. Yaroshevich, Eugene G. Maksimov, Nikolai N. Sluchanko, Dmitry V. Zlenko, Alexey V. Stepanov, Ekaterina A. Slutskaya, Yury B. Slonimskiy, Viacheslav S. Botnarevskii, Alina Remeeva, Ivan Gushchin, Kirill Kovalev, Valentin I. Gordeliy, Ivan V. Shelaev, Fedor E. Gostev, Dmitry Khakhulin, Vladimir V. Poddubnyy, Timofey S. Gostev, Dmitry A. Cherepanov, Tomáš Polívka, Miroslav Kloz, Thomas Friedrich, Vladimir Z. Paschenko, Victor A. Nadtochenko, Andrew B. Rubin, Mikhail P. Kirpichnikov
| Format: | Article |
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| Diterbitkan: | Nature Portfolio 2021-05-01 |
Deskripsi
Yaroshevich et al. present a chemical reaction mechanism of a 35-kDa blue light-triggered photoreceptor, the Orange Carotenoid Protein (OCP). They find that photoactivation critically involves the transient formation of a protonated ketocarotenoid (oxocarbenium cation) state. This study suggests the role of charge-transfer states during OCP photoconversion.