Enables calcium ion binding activity and potassium channel regulator activity. Involved in clustering of voltage-gated potassium channels and regulation of potassium ion transmembrane transport. Located in dendrite and plasma membrane. Part of voltage-gated potassium channel complex. Orthologous to human KCNIP2 (potassium voltage-gated channel interacting protein 2). [provided by Alliance of Genome Resources, Apr 2022]