Predicted to enable potassium channel regulator activity and transmembrane transporter binding activity. Predicted to contribute to delayed rectifier potassium channel activity and voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization. Predicted to be involved in several processes, including cardiac muscle cell action potential involved in contraction; ion transmembrane transport; and regulation of ion transmembrane transport. Predicted to be located in plasma membrane. Predicted to be part of voltage-gated potassium channel complex. Is expressed in several structures, including embryo mesenchyme; ganglia; gonad; skeletal musculature; and ventricular layer. Orthologous to human KCNE5 (potassium voltage-gated channel subfamily E regulatory subunit 5). [provided by Alliance of Genome Resources, Apr 2022]