Predicted to enable several functions, including RNA binding activity; protein N-terminus binding activity; and protein homodimerization activity. Predicted to contribute to pre-miRNA binding activity. Acts upstream of or within several processes, including positive regulation of muscle cell differentiation; regulation of gene expression; and spermatid development. Part of RISC complex. Is expressed in brain and early embryo. Orthologous to human TARBP2 (TARBP2 subunit of RISC loading complex). [provided by Alliance of Genome Resources, Apr 2022]