Is predicted to encode a protein with the following domains: Protein-tyrosine phosphatase, catalytic; Myotubularin family; PH-like domain superfamily; Protein-tyrosine phosphatase-like; Myotubularin-like phosphatase domain; and GRAM domain. Is an ortholog of C. elegans mtm-1. In C. elegans, mtm-1 is involved in negative regulation of engulfment of apoptotic cell and phospholipid dephosphorylation.