Enables MAP kinase tyrosine/serine/threonine phosphatase activity. Involved in negative regulation of transcription, DNA-templated; negative regulation of vasoconstriction; and positive regulation of cerebral blood circulation. Predicted to be active in cytoplasm and nucleus. Orthologous to human DUSP5 (dual specificity phosphatase 5). [provided by Alliance of Genome Resources, Apr 2022]