Enables mRNA 3'-UTR AU-rich region binding activity. Involved in 3'-UTR-mediated mRNA stabilization; inflammatory response; and response to lipopolysaccharide. Predicted to be located in nucleoplasm. Predicted to be active in nucleus. Is expressed in 3rd ventricle; 4th ventricle; brain; brain ventricular layer; and telencephalon ventricular layer. Orthologous to human HNRNPA0 (heterogeneous nuclear ribonucleoprotein A0). [provided by Alliance of Genome Resources, Apr 2022]