Enables potassium ion leak channel activity. Involved in lysosome organization; neuron cellular homeostasis; and potassium ion transmembrane transport. Predicted to be integral component of endosome membrane and integral component of lysosomal membrane. Predicted to be active in endosome and lysosome. Orthologous to human TMEM175 (transmembrane protein 175). [provided by Alliance of Genome Resources, Apr 2022]