Enables voltage-gated potassium channel activity. Involved in potassium ion transport. Predicted to be integral component of plasma membrane. Predicted to be part of clathrin coat and voltage-gated potassium channel complex. Predicted to be integral component of membrane. Human ortholog(s) of this gene implicated in autosomal dominant mental retardation 46. Orthologous to human KCNQ5 (potassium voltage-gated channel subfamily Q member 5). [provided by Alliance of Genome Resources, Apr 2022]