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Functions of DEAD box RNA helicases DDX5 and DDX17 in chromatin organization and transcriptional regulation
Guillaume GIRAUD1, Sophie TERRONE1, Cyril F. BOURGEOIS1,*
1Laboratoire de Biologie et Modelisation de la Cellule, Universite de Lyon, Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon 1, F-69007 Lyon, France
RNA helicases DDX5 and DDX17 are multitasking proteins that regulate gene expression in different biological contexts through diverse activities. Special attention has long been paid to their function as coregulators of transcription factors, providing insight about their functional association with a number of chromatin modifiers and remodelers. However, to date, the variety of described mechanisms has made it difficult to understand precisely how these proteins work at the molecular level, and the contribution of their ATPase domain to these mechanisms remains unclear as well. In light of their association with long noncoding RNAs that are key epigenetic regulators, an emerging view is that DDX5 and DDX17 may act through modulating the activity of various ribonucleoprotein complexes that could ensure their targeting to specific chromatin loci. This review will comprehensively describe the current knowledge on these different mechanisms. We will also discuss the potential roles of DDX5 and DDX17 on the 3D chromatin organization and how these could impact gene expression beyond the transcriptional and post-transcriptional levels.
Abstract, Accepted Manuscript(in press) [Submitted on October 1, 2018, Accepted on October 1, 2018]
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