期刊
CURRENT OPINION IN PLANT BIOLOGY
卷 13, 期 5, 页码 565-570出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2010.07.002
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资金
- Ministry of Education, Science and Culture of Japan [17084002, 21370020]
Phytochrome mediates various physiological as well as developmental responses to light stimuli in plants. Phytochrome is a soluble chromoprotein consisting of the N-terminal photosensory and C-terminal dimerization moieties. Close homologues of plant phytochromes are widely found in prokaryotes. Recently, the crystal structures of the core photosensory module of bacterial phytochromes are resolved. Intriguingly, three sub-domains (PAS, GAF and PHY) in the module are connected by unusual structures named 'light-sensing knot' and 'tongue', which are in tight contact with the chromophore. These findings enable us to review previous data on the structure-function relationships in phytochrome.. Consequently, functional importance of these peculiar structures is further highlighted. Thus, the three-dimensional structure provides a framework for understanding how phytochrome processes the light signals.
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