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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Fujiki, Yukio Lattmann, Simon Iwamoto, Fumiko Nagamine, Yoshikuni Chalupníková, Katerina Selak, Nives |
| Description | Author Affiliation: Chalupníková K ( Friedrich Miescher Institute for Biomedical Research, Novartis Research Foundation, Maulbeerstrasse 66, 4058 Basel, Switzerland.) |
| Abstract | In response to environmental stress, the translation machinery of cells is reprogrammed. The majority of actively translated mRNAs are released from polysomes and driven to specific cytoplasmic foci called stress granules (SGs) where dynamic changes in protein-RNA interaction determine the subsequent fate of mRNAs. Here we show that the DEAH box RNA helicase RHAU is a novel SG-associated protein. Although RHAU protein was originally identified as an AU-rich element-associated protein involved in urokinase-type plasminogen activator mRNA decay, it was not clear whether RHAU could directly interact with RNA. We have demonstrated that RHAU physically interacts with RNA in vitro and in vivo through a newly identified N-terminal RNA-binding domain, which was found to be both essential and sufficient for RHAU localization in SGs. We have also shown that the ATPase activity of RHAU plays a role in the RNA interaction and in the regulation of protein retention in SGs. Thus, our results show that RHAU is the fourth RNA helicase detected in SGs, after rck/p54, DDX3, and eIF4A, and that its association with SGs is dynamic and mediated by an RHAU-specific RNA-binding domain. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 50 |
| Volume Number | 283 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2008-12-12 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | DEAD-box RNA Helicases Metabolism RNA Helicases Chemistry Adenosine Triphosphatases Amino Acid Sequence Cross-Linking Reagents Pharmacology Escherichia Coli Eukaryotic Initiation Factor-4A Fluorescence Recovery After Photobleaching HeLa Cells Kinetics Microscopy, Fluorescence Molecular Sequence Data Protein Binding Protein Structure, Tertiary Sequence Homology, Amino Acid Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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