ACTIN-RELATED PROTEIN8 encodes an F-box protein localized to the nucleolus in Arabidopsis

被引：12
|
作者：
Kandasamy, Muthugapatti K. [1 ]
McKinney, Elizabeth C. [1 ]
Meagher, Richard B. [1 ]
机构：
[1] Univ Georgia, Dept Genet, Athens, GA 30602 USA
来源：
PLANT AND CELL PHYSIOLOGY | 2008年 / 49卷 / 05期
关键词：
ARP8; chromatin remodeling; nuclear actin-related proteins; nucleolar functions; ribosome biogenesis;
D O I：
10.1093/pcp/pcn053
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Arabidopsis encodes six nuclear actin-related proteins (ARPs), among them ARP8 is unique in having an F-box domain and an actin homology domain. Analysis of the ARP8 promoter-beta-glucuronidase (GUS) fusion suggests that ARP8 is ubiquitously expressed in all organs and cell types. Immunocytochemical analysis with ARP8-specific monoclonal antibodies revealed that ARP8 protein is localized to the nucleolus in interphase cells and dispersed in the cytoplasm in mitotic cells. The cell cycle-dependent subcellular patterns of distribution of ARP8 are conserved in other members of Brassicaceae. Our findings provide the first insight into the possible contributions of plant ARP8 to nucleolar functions.
引用
收藏
页码：858 / 863
页数：6
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