Predicted to enable voltage-gated sodium channel activity. Involved in choline transport; potassium ion transport; and sodium ion transmembrane transport. Is integral component of plasma membrane. Human ortholog(s) of this gene implicated in congenital myasthenic syndrome 16; hyperkalemic periodic paralysis; and paramyotonia congenita of Von Eulenburg. Orthologous to human SCN4A (sodium voltage-gated channel alpha subunit 4). [provided by Alliance of Genome Resources, Apr 2022]