Predicted to enable RNA binding activity. Predicted to be involved in mRNA splicing, via spliceosome. Predicted to be located in nucleoplasm. Predicted to be part of U2 snRNP and U2-type spliceosomal complex. Is expressed in brain; embryo; limb; limb mesenchyme; and nervous system. Orthologous to human HTATSF1 (HIV-1 Tat specific factor 1). [provided by Alliance of Genome Resources, Apr 2022]