Journal
TRENDS IN PLANT SCIENCE
Volume 14, Issue 4, Pages 206-213Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2009.01.003
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Funding
- National Science Foundation [MCB-0544137, IOS-0748749]
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [0748749] Funding Source: National Science Foundation
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The importance of regulated proteolysis in the physiology and development of plants is highlighted by the large number of genes dedicated to proteasome-dependent protein degradation. Within the SCF class of E3 ubiquitin ligases are more than 700 F-box proteins that act as recognition modules to specifically target their dedicated substrates for ubiquitylation. This review focuses on very recent studies indicating that some F-box proteins function as phytohormone or light receptors, which directly perceive signals and facilitate specific target-protein degradation to regulate downstream pathways. If this new connection between ligand-regulated proteolysis and signaling proves to be more extensive, an entirely new way of understanding the control of signal transduction is in the offing.
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