Predicted to enable phosphatidylinositol-3,5-bisphosphate 3-phosphatase activity; phosphatidylinositol-3-phosphatase activity; and protein phosphatase binding activity. Involved in response to denervation involved in regulation of muscle adaptation. Predicted to be located in endosome. Predicted to be active in cytoplasm and membrane. Biomarker of muscular atrophy. Orthologous to human MTMR4 (myotubularin related protein 4). [provided by Alliance of Genome Resources, Apr 2022]