Enables chondroitin sulfate binding activity and heparin binding activity. Involved in corpus callosum development and negative regulation of axon regeneration. Predicted to be located in external side of plasma membrane and membrane raft. Predicted to be anchored component of plasma membrane. Is expressed in brain; ganglia; heart; peripheral nervous system; and spinal cord. Orthologous to human RTN4RL1 (reticulon 4 receptor like 1). [provided by Alliance of Genome Resources, Apr 2022]