Automated description from the Alliance of Genome Resources (Release 7.1.0)
Enables voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization and voltage-gated sodium channel activity involved in cardiac muscle cell action potential. Acts upstream of or within with a positive effect on cardiac conduction and gene expression. Acts upstream of or within response to heat and sodium ion transport. Located in T-tubule. Is expressed in several structures, including cranial ganglion and dorsal root ganglion. Human ortholog(s) of this gene implicated in familial atrial fibrillation. Orthologous to human SCN2B (sodium voltage-gated channel beta subunit 2).