Predicted to enable proton transmembrane transporter activity. Predicted to contribute to proton-transporting ATP synthase activity, rotational mechanism. Predicted to be involved in proton motive force-driven ATP synthesis. Predicted to be located in mitochondrial inner membrane. Predicted to be part of mitochondrial proton-transporting ATP synthase, stator stalk. Is an ortholog of human ATP5PD (ATP synthase peripheral stalk subunit d).