Enables potassium channel regulator activity. Involved in several processes, including cellular response to bile acid; cellular response to ethanol; and cellular response to hypoxia. Predicted to be integral component of membrane. Predicted to be part of voltage-gated potassium channel complex. Used to study hypertension. Biomarker of hypertension and type 2 diabetes mellitus. Human ortholog(s) of this gene implicated in hypertension. Orthologous to human KCNMB1 (potassium calcium-activated channel subfamily M regulatory beta subunit 1). [provided by Alliance of Genome Resources, Apr 2022]