MOV10 is a 5' to 3' RNA helicase contributing to UPF1 mRNA target degradation by translocation along 3' UTRs

Item Type:	Article
Title:	MOV10 is a 5' to 3' RNA helicase contributing to UPF1 mRNA target degradation by translocation along 3' UTRs
Creators Name:	Gregersen, L.H. and Schueler, M. and Munschauer, M. and Mastrobuoni, G. and Chen, W. and Kempa, S. and Dieterich, C. and Landthaler, M.
Abstract:	RNA helicases are important regulators of gene expression that act by remodeling RNA secondary structures and RNA-protein interactions. Here, we demonstrate that MOV10 has an ATP-dependent 5' to 3' in vitro RNA unwinding activity and determine the RNA-binding sites of MOV10 and its helicase mutants using PAR-CLIP. We find that MOV10 predominantly binds to 3' UTRs upstream of regions predicted to form local secondary structures and provide evidence that MOV10 helicase mutants are impaired in their ability to translocate 5' to 3' on their mRNA targets. MOV10 interacts with UPF1, the key component of the nonsense-mediated mRNA decay pathway. PAR-CLIP of UPF1 reveals that MOV10 and UPF1 bind to RNA in close proximity. Knockdown of MOV10 resulted in increased mRNA half-lives of MOV10-bound as well as UPF1-regulated transcripts, suggesting that MOV10 functions in UPF1-mediated mRNA degradation as an RNA clearance factor to resolve structures and displace proteins from 3' UTRs.
Keywords:	3' Untranslated Regions, Amino Acid Motifs, Binding Sites, Gene Expression Regulation, Gene Knockdown Techniques, HEK293 Cells, Messenger RNA, Mutation, Nonsense Mediated mRNA Decay, Protein Transport, RNA Helicases, RNA Stability, RNA-Binding Proteins, Trans-Activators
Source:	Molecular Cell
ISSN:	1097-2765
Publisher:	Cell Press / Elsevier
Volume:	54
Number:	4
Page Range:	573-585
Date:	22 May 2014
Official Publication:	https://doi.org/10.1016/j.molcel.2014.03.017
PubMed:	View item in PubMed

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