Enables open rectifier potassium channel activity and protein C-terminus binding activity. Involved in several processes, including cellular response to zinc ion; cochlea development; and negative regulation of cytosolic calcium ion concentration. Located in plasma membrane. Used to study pulmonary venoocclusive disease. Biomarker of status epilepticus. Human ortholog(s) of this gene implicated in primary pulmonary hypertension. Orthologous to human KCNK3 (potassium two pore domain channel subfamily K member 3). [provided by Alliance of Genome Resources, Apr 2022]