Predicted to be involved in filopodium assembly; positive regulation of excitatory synapse assembly; and protein homooligomerization. Predicted to act upstream of or within ventral spinal cord development. Predicted to be active in axon; dendrite; and plasma membrane. Predicted to be integral component of membrane. Orthologous to human VSTM5 (V-set and transmembrane domain containing 5). [provided by Alliance of Genome Resources, Apr 2022]