Journal
ANNUAL REVIEW OF PLANT BIOLOGY
Volume 54, Issue -, Pages 469-496Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev.arplant.54.110901.160901
Keywords
cryptochrome; blue light; Arabidopsis; photomorphogensis
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Funding
- NIGMS NIH HHS [GM56265, R01 GM056265] Funding Source: Medline
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM056265, R29GM056265] Funding Source: NIH RePORTER
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Cryptochromes are photosensory receptors mediating light regulation of growth and development in plants. Since the isolation of the Arabidopsis CRY1 gene in 1993, cryptochromes have been found in every multicellular eukaryote examined. Most plant cryptochromes have a chromophore-binding domain that shares similar structure with DNA photolyase, and a carboxyl terminal extension that contains a DQXVP-acidic-STAES (DAS) domain conserved from moss, to fern, to angiosperm. In Arabidopsis, cryptochromes are nuclear proteins that mediate light control of stem elongation, leaf expansion, photoperiodic flowering, and the circadian clock. Cryptochromes may act by interacting with proteins such as phytochromes, COP1, and clock proteins, or/and chromatin and DNA. Recent studies suggest that cryptochromes undergo a blue light-dependent phosphorylation. that affects the conformation, intermolecular interactions, physiological activities, and protein abundance of the photoreceptors.
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