Predicted to enable phosphatidylinositol binding activity. Involved in several processes, including establishment of mitotic spindle orientation; gonad development; and polarity specification of anterior/posterior axis. Located in P granule; basal part of cell; and cell cortex. Is integral component of membrane. Expressed in several structures, including AB; Psub1; excretory cell; hermaphrodite gonad; and vulval cell. Is an ortholog of human PARD3 (par-3
family cell polarity regulator).