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ELF4 Regulates GIGANTEA Chromatin Access through Subnuclear Sequestration

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Title
ELF4 Regulates GIGANTEA Chromatin Access through Subnuclear Sequestration
Author(s)
Yumi Kim; Junhyun Lim; Miji Yeom; Hyunmin Kim; Jeongsik Kim; Lei Wang; Woe Yeon Kim; David E. Somers; Hong Gil Nam
Publication Date
2013-07
Journal
CELL REPORTS, v.3, no.3, pp.671 - 677
Publisher
Cell Press
Abstract
Many organisms, including plants, use the circadian clock to measure the duration of day and night. Daily rhythms in the plant circadian system are generated by multiple interlocked transcriptional/translational loops and also by spatial regulations such as nuclear translocation. GIGANTEA (GI), one of the key clock components in Arabidopsis, makes distinctive nuclear bodies like other nuclear-localized circadian regulators. However, little is known about the dynamics or roles of GI subnuclear localization. Here, we characterize GI subnuclear compartmentalization and identify unexpected dynamic changes under diurnal conditions. We further identify EARLY FLOWERING 4 (ELF4) as a regulator of GI nuclear distribution through a physical interaction. ELF4 sequesters GI from the nucleoplasm, where GI binds the promoter of CONSTANS (CO), to discrete nuclear bodies. We suggest that the subnuclear compartmentalization of GI by ELF4 contributes to the regulation of photoperiodic flowering.
URI
http://pr.ibs.re.kr/handle/8788114/1299
DOI
10.1016/j.celrep.2013.02.021
ISSN
2211-1247
Appears in Collections:
Center for Plant Aging Research (식물 노화·수명 연구단) > Journal Papers (저널논문)
Files in This Item:
2013-03-28-Cell Reports-ELF4 regulates.pdfDownload

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