DEAD-box RNA helicase DDX6 (DDX6)

DEAD-box RNA helicase DDX6 is an evolutionarily conserved RNA-binding protein and ATP-dependent RNA helicase belonging to the DEAD-box protein family, named after their conserved core "Asp-Glu-Ala-Asp" (DEAD) motif. DDX6 is crucial in post-transcriptional RNA regulation, serving key roles in mRNA metabolism, translation repression, decapping, and the formation of cytosolic structures such as P-bodies and stress granules[1][4][7]. It is known to regulate the stability, localization, and translation of specific mRNAs, participates in pathways of cellular stress response, and controls the fate of non-translating mRNAs. DDX6 has been implicated in cancer through its overexpression and regulatory effects on oncogenic pathways (such as HER2 and FGFR2 expression in gastric cancer), in neurodegeneration via molecular interactions with proteins like ataxin-2, and in viral life cycles by controlling viral RNA packaging, translation, or replication[1][3][4][5]. Because of its central role in mRNA metabolism and disease associations, DDX6 is considered a potential therapeutic target, especially in fields like oncology and antiviral therapy.

Other names

RCKRCK/p54DDX6 proteinDEAD/H-box RNA helicase DDX6

Inhibition or modulation of RNA helicase activity would be expected to alter mRNA turnover and translation, potentially affecting diseases linked to dysregulation of DDX6-dependent processes. Modulation of DDX6 activity can affect viral replication by interfering with RNA packaging or translation.