Is predicted to encode a protein with the following domains: Serine-threonine protein phosphatase, N-terminal; Metallo-dependent phosphatase-like; and Serine-threonine protein phosphatase N-terminal domain. Is an ortholog of C. elegans gsp-3 and gsp-4. In C. elegans, gsp-4 is involved in several processes, including amoeboid sperm motility; egg-laying behavior; and male meiosis chromosome segregation.