Photooligomerization Determines Photosensitivity and Photoreactivity of Plant Cryptochromes
作者机构：Basic Forestry and Proteomics Research CenterUCLA-FAFU Joint Research Center on Plant ProteomicsCollege of Life SciencesFujian Agriculture and Forestry UniversityFuzhou 350002China Department of MolecularCell&Developmental BiologyUniversity of CaliforniaLos AngelesCA 90095USA College of Life SciencesFujian Normal UniversityFuzhou 350108China College of ForestryFujian Agriculture and Forestry UniversityFuzhou 350002China These authors contributed equally to this article.
出 版 物：《Molecular Plant》 (分子植物（英文版）)
年 卷 期：2020年第13卷第3期
页 面：398-413页
核心收录：
学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 0901[农学-作物学] 0902[农学-园艺学]
基 金：supported in part by the National Institutes of Health(GM56265 to C.L.) FAFU-ICE fund(KXGH17011 to Q.W.) FAFU OYIA fund(XJQ201801 to Q.W.) the National Natural Science Foundation of China(31801018 to Q.L.,31600228 to S.C.) the Natural Science Foundation of Fujian Province(2019J06014 to Q.W.,2018J01605 to Q.L.)
主 题：light signaling photomorphogenesis cryptochrome,oligomerization
摘 要：Plant and non-plant species possess cryptochrome(CRY)photoreceptors to mediate blue light regulation of development or the circadian *** blue light-dependent homooligomerization of Arabidopsis CRY2 is a known early photoreaction necessary for its functions,but the photobiochemistry and function of light-dependent homooligomerization and heterooligomerization of cryptochromes,collectively referred to as CRY photooligomerization,have not been well ***,we show that photooligomerization is an evolutionarily conserved photoreaction characteristic of CRY photoreceptors in plants and some non-plant *** analyses of the kinetics of the forward and reverse reactions of photooligomerization of Arabidopsis CRY1 and CRY2 provide a previously unrecognized mechanism underlying the different photosensitivity and photoreactivity of these two closely related *** found that photooligomerization is necessary but not sufficient for the functions of CRY2,implying that CRY photooligomerization is presumably accompanied by additional function-empowering conformational *** further demonstrated that the CRY2-CRY1 heterooligomerization plays roles in regulating functions of Arabidopsis CRYs in *** together,these results suggest that photooligomerization is an evolutionarily conserved mechanism determining the photosensitivity and photoreactivity of plant CRYs.
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