Enables LRR domain binding activity and phosphatase binding activity. Involved in several processes, including axon development; positive regulation of cardiac muscle cell proliferation; and thalamus development. Located in neuronal cell body and plasma membrane. Is active in Schaffer collateral - CA1 synapse and glutamatergic synapse. Is integral component of postsynaptic membrane and integral component of presynaptic membrane. Used to study middle cerebral artery infarction. Biomarker of Alzheimer's disease; congestive heart failure; hypothyroidism; mental depression; and myocardial infarction. Human ortholog(s) of this gene implicated in bipolar disorder; middle cerebral artery infarction; and pancreatic cancer. Orthologous to human NCAM1 (neural cell adhesion molecule 1). [provided by Alliance of Genome Resources, Apr 2022]