Enables mitogen-activated protein kinase binding activity and phosphoprotein phosphatase activity. Acts upstream of or within protein dephosphorylation. Predicted to be located in nuclear membrane and nucleoplasm. Predicted to be active in cytoplasm and nucleus. Is expressed in central nervous system and retina. Orthologous to human DUSP2 (dual specificity phosphatase 2). [provided by Alliance of Genome Resources, Apr 2022]