Predicted to enable protein C-terminus binding activity. Involved in myelination. Predicted to be located in several cellular components, including Schmidt-Lanterman incisure; apical plasma membrane; and apicolateral plasma membrane. Predicted to be part of subapical complex. Predicted to be active in several cellular components, including apical part of cell; bicellular tight junction; and synapse. Human ortholog(s) of this gene implicated in hydrocephalus. Orthologous to human MPDZ (multiple PDZ domain crumbs cell polarity complex component). [provided by Alliance of Genome Resources, Apr 2022]