ATP-dependent RNA helicase involved in mRNA export from the nucleus . Rather than unwinding RNA duplexes, DDX19B functions as a remodeler of ribonucleoprotein particles, whereby proteins bound to nuclear mRNA are dissociated and replaced by cytoplasmic mRNA binding proteins .
Subcellular locations: Cytoplasm, Nucleus, Nucleoplasm
Associates with the nuclear pore complex cytoplasmic fibrils.