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  • Title: Emerging molecular functions and novel roles for the DEAD-box protein Dbp5/DDX19 in gene expression.
    Author: Arul Nambi Rajan A, Montpetit B.
    Journal: Cell Mol Life Sci; 2021 Mar; 78(5):2019-2030. PubMed ID: 33205304.
    Abstract:
    The DEAD-box protein (DBP) Dbp5, a member of the superfamily II (SFII) helicases, has multiple reported roles in gene expression. First identified as an essential regulator of mRNA export in Saccharomyces cerevisiae, the enzyme now has reported functions in non-coding RNA export, translation, transcription, and DNA metabolism. Localization of the protein to various cellular compartments (nucleoplasm, nuclear envelope, and cytoplasm) highlights the ability of Dbp5 to modulate different stages of the RNA lifecycle. While Dbp5 has been well studied for > 20 years, several critical questions remain regarding the mechanistic principles that govern Dbp5 localization, substrate selection, and functions in gene expression. This review aims to take a holistic view of the proposed functions of Dbp5 and evaluate models that accommodate current published data.
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