Predicted to enable transmembrane signaling receptor activity. Predicted to act upstream of or within immune system process. Predicted to be located in membrane. Predicted to be integral component of membrane. Predicted to be active in plasma membrane. Is expressed in ductus deferens; epididymis; and esophagus. Orthologous to human CD300E (CD300e molecule). [provided by Alliance of Genome Resources, Apr 2022]