Enables apolipoprotein binding activity and ionotropic glutamate receptor binding activity. Involved in aging. Located in several cellular components, including dendrite; ribosome; and smooth endoplasmic reticulum. Part of protein-containing complex. Is active in glutamatergic synapse. Is integral component of postsynaptic membrane and integral component of presynaptic active zone membrane. Colocalizes with rough endoplasmic reticulum. Orthologous to human CANX (calnexin). [provided by Alliance of Genome Resources, Apr 2022]