Enables RNA binding activity. Involved in regulation of alternative mRNA splicing, via spliceosome. Located in pronucleus. Is expressed in several structures, including central nervous system; early conceptus; sensory organ; tail unsegmented mesenchyme; and tooth. Human ortholog(s) of this gene implicated in hepatocellular carcinoma; lung cancer; and systemic scleroderma. Orthologous to human HNRNPL (heterogeneous nuclear ribonucleoprotein L). [provided by Alliance of Genome Resources, Apr 2022]