ATP-dependent RNA helicase DDX39A (DDX39A)

ATP-dependent RNA helicase DDX39A is a member of the DEAD box protein family and acts as an RNA-dependent ATPase within helicase superfamily 2. It participates in essential aspects of RNA metabolism, including mRNA nuclear export, spliceosomal snRNA export, and pre-mRNA alternative splicing[1][3][5]. DDX39A works as a molecular motor to remodel RNA-protein complexes, driven by ATP hydrolysis, thereby influencing gene expression, RNA stability, and cellular homeostasis. Its activity is critical for transcriptome regulation, and its paralog DDX39B shares some overlapping but distinct functions. DDX39A also modulates innate immune responses by controlling the retention and export of antiviral transcripts, and has been implicated in cancer, infection, and possibly other disease processes[2][3][4][5]. Clinical targeting of DDX39A faces safety concerns due to its ubiquitous and essential cellular roles.

Other names

DEAD box protein 39URH49BAT1BAT1LDDX39DDXLNuclear RNA helicase URH49UAP56-related helicase, 49 kDaDEAD (Asp-Glu-Ala-Asp) box polypeptide 39ADECD variant of DEAD box family

Hypothetical inhibitors would work by blocking ATP binding or hydrolysis, thus interrupting helicase activity and RNA metabolism. Experimental modulation may influence mRNA export, splicing, or innate immunity signaling[1][2][5].