Perception of UV-B by the arabidopsis UVR8 protein

Rizzini, L. et al. (2011) Perception of UV-B by the arabidopsis UVR8 protein. Science, 332(6025), pp. 103-106. (doi: 10.1126/science.1200660) (PMID:21454788)

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To optimize their growth and survival, plants perceive and respond to ultraviolet-B ( UV-B) radiation. However, neither the molecular identity of the UV-B photoreceptor nor the photoperception mechanism is known. Here we show that dimers of the UVR8 protein perceive UV-B, probably by a tryptophan-based mechanism. Absorption of UV-B induces instant monomerization of the photoreceptor and interaction with COP1, the central regulator of light signaling. Thereby this signaling cascade controlled by UVR8 mediates UV-B photomorphogenic responses securing plant acclimation and thus promotes survival in sunlight

Item Type:Articles
Glasgow Author(s) Enlighten ID:Cloix, Dr Catherine and Kaiserli, Dr Eirini and Jenkins, Professor Gareth
Authors: Rizzini, L., Favory, J.-J., Cloix, C., Faggionato, D., O'Hara, A., Kaiserli, E., Baumeister, R., Schafer, E., Nagy, F., Jenkins, G.I., and Ulm, R.
College/School:College of Medical Veterinary and Life Sciences > School of Molecular Biosciences
Journal Name:Science
Publisher:American Association for the Advancement of Science
ISSN (Online):1095-9203

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
468321The UVR8 UV-B-specific signalling pathwayGareth JenkinsBiotechnology and Biological Sciences Research Council (BBSRC)BB/F014961/1Institute of Molecular Cell and Systems Biology