Journal
TRENDS IN PLANT SCIENCE
Volume 16, Issue 12, Pages 684-691Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2011.09.002
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Funding
- National Institute of Health [GM56265]
- UCLA
- Sol Leshin BGU-UCLA
- National Transgenic Crop Initiative
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Cryptochromes (CRY) are blue-light receptors that mediate various light responses in plants. The photoexcited CRY molecules undergo several biophysical and biochemical changes, including electron transfer, phosphorylation and ubiquitination, resulting in conformational changes to propagate light signals. Two modes of CRY signal transduction have recently been discovered: the cryptochrome-interacting basic-helix-loop-helix 1 (CIB)-dependent CRY2 regulation of transcription; and the SUPPRESSOR OF PHYA1/CONSTITUTIVELY PHOTOMORPHOGENIC1 (SPA1/COP1)-dependent cryptochrome regulation of proteolysis. Both CRY signaling pathways rely on blue light-dependent interactions between the CRY photoreceptor and its signaling proteins to modulate gene expression changes in response to blue light, leading to altered developmental programs in plants.
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