Enables chondroitin sulfate binding activity; heparin binding activity; and neuregulin receptor activity. Involved in several processes, including corpus callosum development; negative regulation of neuron projection development; and neuronal signal transduction. Acts upstream of or within axonogenesis. Located in several cellular components, including axonal growth cone; dendritic shaft; and neuronal cell body. Is integral component of plasma membrane. Is expressed in several structures, including cardiovascular system; forelimb bud; intestine; male reproductive gland or organ; and nervous system. Human ortholog(s) of this gene implicated in schizophrenia. Orthologous to human RTN4R (reticulon 4 receptor). [provided by Alliance of Genome Resources, Apr 2022]