Involved in several processes, including astrocyte cell migration; protein localization to postsynapse; and regulation of postsynaptic neurotransmitter receptor internalization. Located in cell-cell junction; cytoplasm; and postsynaptic density. Is active in glutamatergic synapse. Is extrinsic component of postsynaptic density membrane. Orthologous to human SCRIB (scribble planar cell polarity protein). [provided by Alliance of Genome Resources, Apr 2022]