Is an ortholog of human PPP4R1 (protein phosphatase 4 regulatory subunit 1). Exhibits protein domain specific binding activity. Is predicted to contribute to protein serine\/threonine phosphatase activity. Is involved in several processes, including embryo development\; establishment of mitotic spindle orientation\; and regulation of cell cycle process. Localizes to the cytoplasm. Is expressed in the alimentary system\; the muscular system\; and the nervous system.