From photon to signal in phytochromes: similarities and differences between prokaryotic and plant phytochromes

Journal of Plant Research
Soshichiro Nagano

Abstract

Phytochromes represent a diverse family of red/far-red-light absorbing chromoproteins which are widespread across plants, cyanobacteria, non-photosynthetic bacteria, and more. Phytochromes play key roles in regulating physiological activities in response to light, a critical element in the acclimatization to the environment. The discovery of prokaryotic phytochromes facilitated structural studies which deepened our understanding on the general mechanisms of phytochrome action. An extrapolation of this information to plant phytochromes is justified for universally conserved functional aspects, but it is also true that there are many aspects which are unique to plant phytochromes. Here I summarize some structural studies carried out to date on both prokaryotic and plant phytochromes. I also attempt to identify aspects which are common or unique to plant and prokaryotic phytochromes. Phytochrome themselves, as well as the downstream signaling pathway in plants are more complex than in their prokaryotic counterparts. Thus many structural and functional aspects of plant phytochrome remain unresolved.

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Citations

Feb 11, 2016·Journal of Plant Research·Sam-Geun Kong, Koji Okajima
May 14, 2017·Photochemistry and Photobiology·Aba LosiKai-Hong Zhao
May 18, 2017·Nature Chemical Biology·Lukasz Kowalik, James K Chen
Aug 19, 2016·Science Advances·Alexander BjörlingSebastian Westenhoff
Jan 27, 2019·The Journal of Biological Chemistry·Geoffrey GourinchasAndreas Winkler
Aug 10, 2019·Protein Science : a Publication of the Protein Society·Andreas Möglich
Aug 17, 2019·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Eleonora ConsiglieriAba Losi
Nov 21, 2019·Nature Communications·Martina LegrisChristian Fankhauser
Sep 11, 2020·International Journal of Molecular Sciences·Xiaocen LuRobert E Campbell
Oct 28, 2020·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Heikki TakalaSebastian Westenhoff
Feb 15, 2021·International Journal of Biological Macromolecules·Alexander V FoninKonstantin K Turoverov
Mar 24, 2021·Annual Review of Plant Biology·Mei-Chun ChengEnamul Huq

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