Enables protein C-terminus binding activity; protein kinase C binding activity; and signaling receptor binding activity. Involved in receptor clustering. Acts upstream of or within protein targeting. Located in several cellular components, including Golgi apparatus; perinuclear region of cytoplasm; and postsynaptic density. Is expressed in brain. Orthologous to human PICK1 (protein interacting with PRKCA 1). [provided by Alliance of Genome Resources, Apr 2022]