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 several cellular components, including P granule; basal part of cell; and cell cortex. Is extrinsic component of cytoplasmic side of plasma membrane. Expressed in several structures, including AB; Psub1; excretory cell; hermaphrodite gonad; and vulval cell. Is an ortholog of human PARD3B (
par-3 family cell polarity regulator beta).