May be involved in cell migration, cartilage development and in linking signal transduction pathways to the cytoskeleton (By similarity). May promote apoptosis, via its cleavage by caspase-3. Binds to actin filaments and interacts with phosphotyrosine-containing proteins. Prostate and placenta. Down regulated in prostate cancer. Proteolytically cleaved by caspase-3 during apoptosis. Belongs to the PTEN phosphatase protein family.