A1 Journal article (refereed)
Modulation of Structural Heterogeneity Controls Phytochrome Photoswitching (2020)
Gustavsson, E., Isaksson, L., Persson, C., Mayzel, M., Brath, U., Vrhovac, L., Ihalainen, J. A., Karlsson, B. G., Orekhov, V., & Westenhoff, S. (2020). Modulation of Structural Heterogeneity Controls Phytochrome Photoswitching. Biophysical Journal, 118(2), 415-421. https://doi.org/10.1016/j.bpj.2019.11.025
JYU authors or editors
Publication details
All authors or editors: Gustavsson, Emil; Isaksson, Linnéa; Persson, Cecilia; Mayzel, Maxim; Brath, Ulrika; Vrhovac, Lidija; Ihalainen, Janne A.; Karlsson, B. Göran; Orekhov, Vladislav; Westenhoff, Sebastian
Journal or series: Biophysical Journal
ISSN: 0006-3495
eISSN: 1542-0086
Publication year: 2020
Volume: 118
Issue number: 2
Pages range: 415-421
Publisher: Cell Press
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1016/j.bpj.2019.11.025
Publication open access: Openly available
Publication channel open access: Delayed open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67652
Abstract
Phytochromes sense red/far-red light and control many biological processes in plants, fungi, and bacteria. Although crystal structures of dark and light adapted states have been determined, the molecular mechanisms underlying photoactivation remains elusive. Here we demonstrate that the conserved tongue region of the PHY domain of a 57kDa photosensory module of Deinococcus radiodurans phytochrome, changes from a structurally heterogeneous dark state to an ordered light activated state. The results were obtained in solution by utilizing a laser-triggered activation approach detected on the atomic level with high-resolution protein NMR spectroscopy. The data suggest that photosignaling of phytochromes relies on careful modulation of structural heterogeneity of the PHY tongue.
Keywords: photochemistry; proteins; molecular dynamics; NMR spectroscopy
Free keywords: phytochrome; molecular dynamics; NMR; protein structure; phototransduction
Contributing organizations
Related projects
- Biologiset fotosensorit toiminnassa - Ko
- Ihalainen, Janne
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2020
JUFO rating: 1