Cryptochrome structure and signal transduction

被引:349
作者
Lin, CT [1 ]
Shalitin, D [1 ]
机构
[1] Univ Calif Los Angeles, Dept Mol Cell & Dev Biol, Los Angeles, CA 90095 USA
关键词
cryptochrome; blue light; Arabidopsis; photomorphogensis;
D O I
10.1146/annurev.arplant.54.110901.160901
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
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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收藏
页码:469 / 496
页数:30
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