Enables RNA binding activity. Involved in positive regulation of NIK/NF-kappaB signaling and positive regulation of gene expression. Located in condensed nuclear chromosome. Part of RISC complex. Is expressed in several structures, including central nervous system; early embryo; lung mesenchyme; sensory organ; and tooth. Orthologous to human AGO3 (argonaute RISC catalytic component 3). [provided by Alliance of Genome Resources, Apr 2022]