Involved in synaptic membrane adhesion. Located in glutamatergic synapse. Is active in synapse. Is expressed in several structures, including alimentary system; central nervous system; embryo ectoderm; limb; and sensory organ. Human ortholog(s) of this gene implicated in Keipert syndrome. Orthologous to human GPC4 (glypican 4). [provided by Alliance of Genome Resources, Apr 2022]