May play a synaptic role at the postsynaptic lipid rafts possibly through interaction with CAMK2A. Interacts with CAMK2A. In neurons, localizes to postsynaptic lipid rafts (By similarity). In myocardial and skeletal muscle cells, localizes to the cytoplasm adjacent to the inner cell membrane, polarized to one end of the myocyte (By similarity). Expressed in the brain. Palmitoylation and myristoylation target the protein to the lipid rafts.