a double strand RNA binding protein (dsRBP). Interacts with TRBP and Dicer to stimulate the cleavage of double-stranded or short hairpin RNA to siRNA. Appears to have a pro-apoptotic function that may be suppressed in the presence of growth factor. Activates the interferon-induced protein kinase PKR. Three alternatively spliced human isoforms have been reported. Note: This description may include information from UniProtKB.
Protein type: RNA processing; RNA binding protein; Activator protein
Cellular Component: membrane; perinuclear region of cytoplasm; cytoplasm; cytosol
Molecular Function: protein binding; protein homodimerization activity; enzyme activator activity
Biological Process: positive regulation of catalytic activity; negative regulation of cell proliferation; skeletal morphogenesis; response to virus; outer ear morphogenesis; immune response; gene expression; middle ear morphogenesis; RNA interference, production of siRNA; protein amino acid phosphorylation
Alt. Names/Synonyms: DYT16; HSD14; Interferon-inducible double stranded RNA-dependent protein kinase activator A; PACT; PKR-associated protein X; PKR-associating protein X; PRKRA; Protein activator of the interferon-induced protein kinase; protein kinase, interferon-inducible double stranded RNA dependent activator; Protein kinase, interferon-inducible double stranded RNA-dependent activator; RAX
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.