Predicted to enable proton transmembrane transporter activity. Predicted to contribute to proton-transporting ATP synthase activity, rotational mechanism. Predicted to be involved in mitochondrial ATP synthesis coupled proton transport. Predicted to act upstream of or within ATP biosynthetic process and ion transport. Located in mitochondrion. Is expressed in alimentary system; hemolymphoid system; liver; and urinary system. Orthologous to human ATP5ME (ATP synthase membrane subunit e). [provided by Alliance of Genome Resources, Apr 2022]