Predicted to enable identical protein binding activity. Involved in myelination and response to ethanol. Located in Schmidt-Lanterman incisure; lateral plasma membrane; and paranode region of axon. Biomarker of middle cerebral artery infarction. Human ortholog(s) of this gene implicated in schizophrenia. Orthologous to human CLDN5 (claudin 5). [provided by Alliance of Genome Resources, Apr 2022]