Predicted to enable voltage-gated potassium channel activity. Involved in potassium ion transport and regulation of delayed rectifier potassium channel activity. Located in perinuclear region of cytoplasm and plasma membrane. Part of voltage-gated potassium channel complex. Is expressed in diencephalon lateral wall mantle layer; heart; and olfactory epithelium. Orthologous to human KCNS2 (potassium voltage-gated channel modifier subfamily S member 2). [provided by Alliance of Genome Resources, Apr 2022]